Observability

ObservabilityTelemetry

List keys

POST/accounts/{account_id}/workers/observability/telemetry/keys

Run a query

POST/accounts/{account_id}/workers/observability/telemetry/query

List values

POST/accounts/{account_id}/workers/observability/telemetry/values

Prepare live tail

POST/accounts/{account_id}/workers/observability/telemetry/live-tail

Live tail heartbeat

POST/accounts/{account_id}/workers/observability/telemetry/live-tail/heartbeat

ModelsExpand Collapse

TelemetryKeysResponse object { key, lastSeenAt, type }

key: string

lastSeenAt: number

type: "string" or "boolean" or "number"

One of the following:

"string"

"boolean"

"number"

TelemetryQueryResponse object { run, statistics, agents, 6 more }

Complete results of a query run. The populated fields depend on the requested view type (events, calculations, invocations, traces, or agents).

run: object { id, accountId, dry, 8 more }

Represents a single execution of a query against Workers Observability data, including the query definition, execution status, and performance statistics.

id: string

Unique identifier for this query run.

accountId: string

Cloudflare account ID that owns this query run.

dry: boolean

Whether this was a dry run (results not persisted).

granularity: number

Number of time-series buckets used for the query. Higher values produce more detailed series data.

query: object { id, adhoc, created, 6 more }

A saved query definition with its parameters, metadata, and ownership information.

id: string

adhoc: boolean

If the query wasnt explcitly saved

created: string

createdBy: string

description: string

maxLength1000

Query name

maxLength250

minLength1

parameters: object { calculations, datasets, filterCombination, 6 more }

calculations: optional array of object { operator, alias, key, keyType } or object { key, operator, alias, keyType }

Create Calculations to compute as part of the query.

One of the following:

object { operator, alias, key, keyType }

operator: "count" or "COUNT"

One of the following:

"count"

"COUNT"

alias: optional string

key: optional string

keyType: optional "string" or "number" or "boolean"

One of the following:

"string"

"number"

"boolean"

object { key, operator, alias, keyType }

key: string

operator: "uniq" or "max" or "min" or 33 more

One of the following:

"uniq"

"max"

"min"

"sum"

"avg"

"median"

"p001"

"p01"

"p05"

"p10"

"p25"

"p75"

"p90"

"p95"

"p99"

"p999"

"stddev"

"variance"

"COUNT_DISTINCT"

"MAX"

"MIN"

"SUM"

"AVG"

"MEDIAN"

"P001"

"P01"

"P05"

"P10"

"P25"

"P75"

"P90"

"P95"

"P99"

"P999"

"STDDEV"

"VARIANCE"

alias: optional string

keyType: optional "string" or "number" or "boolean"

One of the following:

"string"

"number"

"boolean"

datasets: optional array of string

Set the Datasets to query. Leave it empty to query all the datasets.

filterCombination: optional "and" or "or" or "AND" or "OR"

Set a Flag to describe how to combine the filters on the query.

One of the following:

"and"

"or"

"AND"

"OR"

filters: optional array of object { filterCombination, filters, kind } or object { key, operation, type, 2 more }

Configure the Filters to apply to the query. Supports nested groups via kind: group.

One of the following:

object { filterCombination, filters, kind }

filterCombination: "and" or "or" or "AND" or "OR"

One of the following:

"and"

"or"

"AND"

"OR"

filters: array of unknown

kind: "group"

WorkersObservabilityFilterLeaf object { key, operation, type, 2 more }

A filter condition applied to query results. Use the keys and values endpoints to discover available fields and their values before constructing filters.

key: string

Filter field name. Use verified keys from previous query results or the keys endpoint. Common keys include $metadata.service, $metadata.origin, $metadata.trigger, $metadata.message, and $metadata.error.

operation: "includes" or "not_includes" or "starts_with" or 27 more

Comparison operator. String operators: includes, not_includes, starts_with, ends_with, regex. Existence: exists, is_null. Set membership: in, not_in (comma-separated values). Numeric: eq, neq, gt, gte, lt, lte.

One of the following:

"includes"

"not_includes"

"starts_with"

"ends_with"

"regex"

"exists"

"is_null"

"in"

"not_in"

"eq"

"neq"

"gt"

"gte"

"lt"

"lte"

"="

"!="

">"

">="

"<"

"<="

"INCLUDES"

"DOES_NOT_INCLUDE"

"MATCH_REGEX"

"EXISTS"

"DOES_NOT_EXIST"

"IN"

"NOT_IN"

"STARTS_WITH"

"ENDS_WITH"

type: "string" or "number" or "boolean"

Data type of the filter field. Must match the actual type of the key being filtered.

One of the following:

"string"

"number"

"boolean"

kind: optional "filter"

Discriminator for leaf filter nodes. Always filter when present; may be omitted.

value: optional string or number or boolean

Comparison value. Must match actual values in your data verify with the values endpoint. Ensure the value type (string/number/boolean) matches the field type. String comparisons are case-sensitive. Regex uses RE2 syntax (no lookaheads/lookbehinds).

One of the following:

string

number

boolean

groupBys: optional array of object { type, value }

Define how to group the results of the query.

type: "string" or "number" or "boolean"

One of the following:

"string"

"number"

"boolean"

value: string

havings: optional array of object { key, operation, value }

Configure the Having clauses that filter on calculations in the query result.

key: string

operation: "eq" or "neq" or "gt" or 3 more

One of the following:

"eq"

"neq"

"gt"

"gte"

"lt"

"lte"

value: number

limit: optional number

Set a limit on the number of results / records returned by the query

maximum100

minimum0

needle: optional object { value, isRegex, matchCase }

Define an expression to search using full-text search.

value:

isRegex: optional boolean

matchCase: optional boolean

orderBy: optional object { value, order }

Configure the order of the results returned by the query.

value: string

Configure which Calculation to order the results by.

order: optional "asc" or "desc"

Set the order of the results

One of the following:

"asc"

"desc"

updated: string

updatedBy: string

status: "STARTED" or "COMPLETED"

Current execution status of the query run.

One of the following:

"STARTED"

"COMPLETED"

timeframe: object { from, to }

Time range for the query execution

from: number

Start timestamp for the query timeframe (Unix timestamp in milliseconds)

to: number

End timestamp for the query timeframe (Unix timestamp in milliseconds)

userId: string

ID of the user who initiated the query run.

created: optional string

ISO-8601 timestamp when the query run was created.

statistics: optional object { bytes_read, elapsed, rows_read, abr_level }

Query performance statistics from the database (does not include network latency).

bytes_read: number

Number of uncompressed bytes read from the table.

elapsed: number

Time in seconds for the query to run.

rows_read: number

Number of rows scanned from the table.

abr_level: optional number

The level of Adaptive Bit Rate (ABR) sampling used for the query. If empty the ABR level is 1

updated: optional string

ISO-8601 timestamp when the query run was last updated.

statistics: object { bytes_read, elapsed, rows_read, abr_level }

Query performance statistics from the database. Includes execution time, rows scanned, and bytes read. Does not include network latency.

bytes_read: number

Number of uncompressed bytes read from the table.

elapsed: number

Time in seconds for the query to run.

rows_read: number

Number of rows scanned from the table.

abr_level: optional number

The level of Adaptive Bit Rate (ABR) sampling used for the query. If empty the ABR level is 1

agents: optional array of object { id, errors, models, 13 more }

Agent run summaries. Present when the query view is agents. Each entry represents one trace containing at least one agent invocation.

id: string

Pagination cursor derived from the first agent invocation in the run.

errors: array of string

Distinct errors reported by spans in the run.

models: array of string

Distinct models reported by chat spans across the runs trace.

providers: array of string

Distinct GenAI providers reported by chat spans in the run.

services: array of string

Worker services represented in the runs trace.

spans: number

Number of spans in the runs trace.

status: "completed" or "error"

Observed run status.

One of the following:

"completed"

"error"

traceDurationMs: number

Total trace duration in milliseconds.

traceEndMs: number

End of the runs trace as a Unix epoch in milliseconds.

traceId: string

Trace identifier for this agent run.

traceStartMs: number

Start of the runs trace as a Unix epoch in milliseconds.

agentId: optional string

ID from the earliest agent invocation that provides one.

agentName: optional string

Name from the earliest agent invocation that provides one.

conversationId: optional string

Conversation ID from the earliest invocation that provides one.

inputTokens: optional number

Input tokens summed across chat spans in the runs trace; informational, not billing data.

outputTokens: optional number

Output tokens summed across chat spans in the runs trace; informational, not billing data.

calculations: optional array of object { aggregates, calculation, series, alias }

Aggregated calculation results. Present when the query view is calculations. Contains computed metrics (count, avg, p99, etc.) with optional group-by breakdowns and time-series data.

aggregates: array of object { count, interval, sampleInterval, 2 more }

interval: number

sampleInterval: number

value: number

groups: optional array of object { key, value }

key: string

value: string or number or boolean

One of the following:

string

number

boolean

calculation: string

series: array of object { data, time }

data: array of object { count, interval, sampleInterval, 4 more }

interval: number

sampleInterval: number

value: number

firstSeen: optional string

groups: optional array of object { key, value }

key: string

value: string or number or boolean

One of the following:

string

number

boolean

lastSeen: optional string

time: string

alias: optional string

compare: optional array of object { aggregates, calculation, series, alias }

Comparison calculation results from the previous time period. Present when the compare option is enabled. Same structure as calculations.

aggregates: array of object { count, interval, sampleInterval, 2 more }

interval: number

sampleInterval: number

value: number

groups: optional array of object { key, value }

key: string

value: string or number or boolean

One of the following:

string

number

boolean

calculation: string

series: array of object { data, time }

data: array of object { count, interval, sampleInterval, 4 more }

interval: number

sampleInterval: number

value: number

firstSeen: optional string

groups: optional array of object { key, value }

key: string

value: string or number or boolean

One of the following:

string

number

boolean

lastSeen: optional string

time: string

alias: optional string

distribution: optional object { bins, bucketBoundaries, bucketMode, 2 more }

Bucketed 2D histogram of a numeric field over time. Present when chartType is distribution.

bins: array of string

Time-bucket labels (ISO-8601 strings), one per matrix column.

bucketBoundaries: array of number

Raw bucket edges in the values native unit, length buckets.length + 1. Used for the colour scale and percentile mapping.

bucketMode: "log" or "linear"

Bucketing scheme used to derive the boundaries. log produces geometric edges; linear produces fixed-width edges.

One of the following:

"log"

"linear"

buckets: array of string

Value-range labels, one per matrix row (e.g. 50100ms).

matrix: array of array of number

Sampling-corrected counts. matrix[bucketIdx][binIdx] is the estimated number of events in value-bucket bucketIdx during time-bin binIdx.

events: optional object { count, events, fields, series }

Individual event results. Present when the query view is events. Contains the matching log lines and their metadata.

Total number of events matching the query (may exceed the number returned due to limits).

events: optional array of object { "$metadata", dataset, source, 3 more }

List of individual telemetry events matching the query.

"$metadata": object { id, account, cloudService, 29 more }

Structured metadata extracted from the event. These fields are indexed and available for filtering and aggregation.

id: string

Unique event ID. Use as the cursor value for offset-based pagination.

account: optional string

Cloudflare account identifier.

cloudService: optional string

Cloudflare product that generated this event (e.g. workers, pages).

coldStart: optional number

exclusiveMinimum

minimum0

cost: optional number

Estimated cost units for this invocation.

exclusiveMinimum

minimum0

duration: optional number

Span duration in milliseconds.

exclusiveMinimum

minimum0

endTime: optional number

Span end time as a Unix epoch in milliseconds.

minimum0

error: optional string

Error message, present when the log represents an error.

errorTemplate: optional string

Templatized version of the error message used for grouping similar errors.

fingerprint: optional string

Content-based fingerprint used to group similar events.

level: optional string

Log level (e.g. log, debug, info, warn, error).

message: optional string

Log message text.

messageTemplate: optional string

Templatized version of the log message used for grouping similar messages.

metricName: optional string

Metric name when the event represents a metric data point.

origin: optional string

Origin of the event (e.g. fetch, scheduled, queue).

parentSpanId: optional string

Span ID of the parent span in the trace hierarchy.

provider: optional string

Infrastructure provider identifier.

rayId: optional string

Cloudflare Ray ID from the cf-ray header of the request that triggered the invocation.

region: optional string

Cloudflare data center / region that handled the request.

requestId: optional string

Cloudflare request ID that ties all logs from a single invocation together.

service: optional string

Worker script name that produced this event.

spanId: optional string

Span ID for this individual unit of work within a trace.

spanName: optional string

Human-readable name for this span.

stackId: optional string

Stack / deployment identifier.

startTime: optional number

Span start time as a Unix epoch in milliseconds.

minimum0

statusCode: optional number

HTTP response status code returned by the Worker.

exclusiveMinimum

minimum0

traceDuration: optional number

Total duration of the entire trace in milliseconds.

exclusiveMinimum

minimum0

traceId: optional string

Distributed trace ID linking spans across services.

transactionName: optional string

Logical transaction name for this request.

trigger: optional string

What triggered the invocation (e.g. GET /users, POST /orders, queue message).

type: optional string

Event type classifier (e.g. cf-worker-event, cf-worker-log).

url: optional string

Request URL that triggered the Worker invocation.

dataset: string

The dataset this event belongs to (e.g. cloudflare-workers).

source: string or map[unknown]

Raw log payload. May be a string or a structured object depending on how the log was emitted.

One of the following:

string

map[unknown]

timestamp: number

Event timestamp as a Unix epoch in milliseconds.

minimum0

"$containers": optional map[unknown]

Cloudflare Containers event information that enriches your logs for identifying and debugging issues.

"$workers": optional object { eventType, requestId, scriptName, 10 more } or object { cpuTimeMs, eventType, outcome, 14 more }

Cloudflare Workers event information that enriches your logs for identifying and debugging issues.

One of the following:

object { eventType, requestId, scriptName, 10 more }

eventType: "fetch" or "scheduled" or "alarm" or 9 more

One of the following:

"fetch"

"scheduled"

"alarm"

"cron"

"queue"

"email"

"tail"

"rpc"

"jsrpc"

"websocket"

"workflow"

"unknown"

requestId: string

scriptName: string

durableObjectId: optional string

entrypoint: optional string

event: optional map[unknown]

executionModel: optional "durableObject" or "stateless"

One of the following:

"durableObject"

"stateless"

outcome: optional string

preview: optional object { id, name, slug }

id: optional string

slug: optional string

scriptVersion: optional object { id, message, tag }

id: optional string

message: optional string

tag: optional string

spanId: optional string

traceId: optional string

truncated: optional boolean

object { cpuTimeMs, eventType, outcome, 14 more }

cpuTimeMs: number

eventType: "fetch" or "scheduled" or "alarm" or 9 more

One of the following:

"fetch"

"scheduled"

"alarm"

"cron"

"queue"

"email"

"tail"

"rpc"

"jsrpc"

"websocket"

"workflow"

"unknown"

outcome: string

requestId: string

scriptName: string

wallTimeMs: number

diagnosticsChannelEvents: optional array of object { channel, message, timestamp }

channel: string

message: string

timestamp: number

dispatchNamespace: optional string

durableObjectId: optional string

entrypoint: optional string

event: optional map[unknown]

executionModel: optional "durableObject" or "stateless"

One of the following:

"durableObject"

"stateless"

preview: optional object { id, name, slug }

id: optional string

slug: optional string

scriptVersion: optional object { id, message, tag }

id: optional string

message: optional string

tag: optional string

spanId: optional string

traceId: optional string

truncated: optional boolean

fields: optional array of object { key, type }

List of fields discovered in the matched events. Useful for building dynamic UIs.

key: string

Field name present in the matched events.

type: string

Data type of the field (string, number, or boolean).

series: optional array of object { data, time }

Time-series data for the matched events, bucketed by the query granularity.

data: array of object { aggregates, count, interval, 3 more }

aggregates: object { _count, _interval, _firstSeen, 2 more }

Deprecated_count: number

exclusiveMinimum

minimum0

Deprecated_interval: number

exclusiveMinimum

minimum0

Deprecated_firstSeen: optional string

Deprecated_lastSeen: optional string

Deprecatedbin: optional unknown

interval: number

sampleInterval: number

errors: optional number

groups: optional map[string or number or boolean]

Groups in the query results.

One of the following:

string

number

boolean

time: string

invocations: optional map[array of object { "$metadata", dataset, source, 3 more } ]

Events grouped by invocation (request ID). Present when the query view is invocations. Each key is a request ID mapping to all events from that invocation.

"$metadata": object { id, account, cloudService, 29 more }

Structured metadata extracted from the event. These fields are indexed and available for filtering and aggregation.

id: string

Unique event ID. Use as the cursor value for offset-based pagination.

account: optional string

Cloudflare account identifier.

cloudService: optional string

Cloudflare product that generated this event (e.g. workers, pages).

coldStart: optional number

exclusiveMinimum

minimum0

cost: optional number

Estimated cost units for this invocation.

exclusiveMinimum

minimum0

duration: optional number

Span duration in milliseconds.

exclusiveMinimum

minimum0

endTime: optional number

Span end time as a Unix epoch in milliseconds.

minimum0

error: optional string

Error message, present when the log represents an error.

errorTemplate: optional string

Templatized version of the error message used for grouping similar errors.

fingerprint: optional string

Content-based fingerprint used to group similar events.

level: optional string

Log level (e.g. log, debug, info, warn, error).

message: optional string

Log message text.

messageTemplate: optional string

Templatized version of the log message used for grouping similar messages.

metricName: optional string

Metric name when the event represents a metric data point.

origin: optional string

Origin of the event (e.g. fetch, scheduled, queue).

parentSpanId: optional string

Span ID of the parent span in the trace hierarchy.

provider: optional string

Infrastructure provider identifier.

rayId: optional string

Cloudflare Ray ID from the cf-ray header of the request that triggered the invocation.

region: optional string

Cloudflare data center / region that handled the request.

requestId: optional string

Cloudflare request ID that ties all logs from a single invocation together.

service: optional string

Worker script name that produced this event.

spanId: optional string

Span ID for this individual unit of work within a trace.

spanName: optional string

Human-readable name for this span.

stackId: optional string

Stack / deployment identifier.

startTime: optional number

Span start time as a Unix epoch in milliseconds.

minimum0

statusCode: optional number

HTTP response status code returned by the Worker.

exclusiveMinimum

minimum0

traceDuration: optional number

Total duration of the entire trace in milliseconds.

exclusiveMinimum

minimum0

traceId: optional string

Distributed trace ID linking spans across services.

transactionName: optional string

Logical transaction name for this request.

trigger: optional string

What triggered the invocation (e.g. GET /users, POST /orders, queue message).

type: optional string

Event type classifier (e.g. cf-worker-event, cf-worker-log).

url: optional string

Request URL that triggered the Worker invocation.

dataset: string

The dataset this event belongs to (e.g. cloudflare-workers).

source: string or map[unknown]

Raw log payload. May be a string or a structured object depending on how the log was emitted.

One of the following:

string

map[unknown]

timestamp: number

Event timestamp as a Unix epoch in milliseconds.

minimum0

"$containers": optional map[unknown]

Cloudflare Containers event information that enriches your logs for identifying and debugging issues.

"$workers": optional object { eventType, requestId, scriptName, 10 more } or object { cpuTimeMs, eventType, outcome, 14 more }

Cloudflare Workers event information that enriches your logs for identifying and debugging issues.

One of the following:

object { eventType, requestId, scriptName, 10 more }

eventType: "fetch" or "scheduled" or "alarm" or 9 more

One of the following:

"fetch"

"scheduled"

"alarm"

"cron"

"queue"

"email"

"tail"

"rpc"

"jsrpc"

"websocket"

"workflow"

"unknown"

requestId: string

scriptName: string

durableObjectId: optional string

entrypoint: optional string

event: optional map[unknown]

executionModel: optional "durableObject" or "stateless"

One of the following:

"durableObject"

"stateless"

outcome: optional string

preview: optional object { id, name, slug }

id: optional string

slug: optional string

scriptVersion: optional object { id, message, tag }

id: optional string

message: optional string

tag: optional string

spanId: optional string

traceId: optional string

truncated: optional boolean

object { cpuTimeMs, eventType, outcome, 14 more }

cpuTimeMs: number

eventType: "fetch" or "scheduled" or "alarm" or 9 more

One of the following:

"fetch"

"scheduled"

"alarm"

"cron"

"queue"

"email"

"tail"

"rpc"

"jsrpc"

"websocket"

"workflow"

"unknown"

outcome: string

requestId: string

scriptName: string

wallTimeMs: number

diagnosticsChannelEvents: optional array of object { channel, message, timestamp }

channel: string

message: string

timestamp: number

dispatchNamespace: optional string

durableObjectId: optional string

entrypoint: optional string

event: optional map[unknown]

executionModel: optional "durableObject" or "stateless"

One of the following:

"durableObject"

"stateless"

preview: optional object { id, name, slug }

id: optional string

slug: optional string

scriptVersion: optional object { id, message, tag }

id: optional string

message: optional string

tag: optional string

spanId: optional string

traceId: optional string

truncated: optional boolean

traces: optional array of object { rootSpanName, rootTransactionName, service, 6 more }

Trace summaries matching the query. Present when the query view is traces. Each entry represents a distributed trace with its spans, duration, and services involved.

rootSpanName: string

Name of the root span that initiated the trace.

rootTransactionName: string

Logical transaction name for the root span.

service: array of string

List of Worker services involved in the trace.

spans: number

Total number of spans in the trace.

traceDurationMs: number

Total duration of the trace in milliseconds.

traceEndMs: number

Trace end time as a Unix epoch in milliseconds.

traceId: string

Unique identifier for the distributed trace.

traceStartMs: number

Trace start time as a Unix epoch in milliseconds.

errors: optional array of string

Error messages encountered during the trace, if any.

TelemetryValuesResponse object { dataset, key, type, value }

dataset: string

key: string

type: "string" or "boolean" or "number"

One of the following:

"string"

"boolean"

"number"

value: string or number or boolean

One of the following:

string

number

boolean

TelemetryLiveTailResponse object { wsUrl }

wsUrl: string

WebSocket URL clients connect to in order to stream live tail events.

formaturi

TelemetryLiveTailHeartbeatResponse = unknown

ObservabilityDestinations

Get Destinations

GET/accounts/{account_id}/workers/observability/destinations

Create Destination

POST/accounts/{account_id}/workers/observability/destinations

Update Destination

PATCH/accounts/{account_id}/workers/observability/destinations/{slug}

Delete Destination

DELETE/accounts/{account_id}/workers/observability/destinations/{slug}

ModelsExpand Collapse

DestinationListResponse object { configuration, enabled, name, 2 more }

configuration: object { destination_conf, headers, jobStatus, 3 more }

destination_conf: string

headers: map[string]

jobStatus: object { error_message, last_complete, last_error }

error_message: string

last_complete: string

last_error: string

logpushDataset: "opentelemetry-traces" or "opentelemetry-logs" or "opentelemetry-metrics"

One of the following:

"opentelemetry-traces"

"opentelemetry-logs"

"opentelemetry-metrics"

type: "logpush"

url: string

enabled: boolean

scripts: array of string

slug: string

DestinationCreateResponse object { configuration, enabled, name, 2 more }

configuration: object { destination_conf, logpushDataset, logpushJob, 2 more }

destination_conf: string

logpushDataset: "opentelemetry-traces" or "opentelemetry-logs" or "opentelemetry-metrics"

One of the following:

"opentelemetry-traces"

"opentelemetry-logs"

"opentelemetry-metrics"

logpushJob: number

type: "logpush"

url: string

enabled: boolean

scripts: array of string

slug: string

DestinationUpdateResponse object { configuration, enabled, name, 2 more }

configuration: object { destination_conf, logpushDataset, logpushJob, 2 more }

destination_conf: string

logpushDataset: "opentelemetry-traces" or "opentelemetry-logs" or "opentelemetry-metrics"

One of the following:

"opentelemetry-traces"

"opentelemetry-logs"

"opentelemetry-metrics"

logpushJob: number

type: "logpush"

url: string

enabled: boolean

scripts: array of string

slug: string

DestinationDeleteResponse object { configuration, enabled, name, 2 more }

configuration: object { destination_conf, logpushDataset, logpushJob, 2 more }

destination_conf: string

logpushDataset: "opentelemetry-traces" or "opentelemetry-logs" or "opentelemetry-metrics"

One of the following:

"opentelemetry-traces"

"opentelemetry-logs"

"opentelemetry-metrics"

logpushJob: number

type: "logpush"

url: string

enabled: boolean

scripts: array of string

slug: string

ObservabilityQueries

Save query

POST/accounts/{account_id}/workers/observability/queries

List queries

GET/accounts/{account_id}/workers/observability/queries

ModelsExpand Collapse

QueryCreateResponse object { id, adhoc, created, 6 more }

id: string

adhoc: boolean

If the query wasnt explcitly saved

created: string

createdBy: string

description: string

maxLength1000

Query name

maxLength250

minLength1

parameters: object { calculations, datasets, filterCombination, 6 more }

calculations: optional array of object { operator, alias, key, keyType } or object { key, operator, alias, keyType }

Create Calculations to compute as part of the query.

One of the following:

object { operator, alias, key, keyType }

operator: "count" or "COUNT"

One of the following:

"count"

"COUNT"

alias: optional string

key: optional string

keyType: optional "string" or "number" or "boolean"

One of the following:

"string"

"number"

"boolean"

object { key, operator, alias, keyType }

key: string

operator: "uniq" or "max" or "min" or 33 more

One of the following:

"uniq"

"max"

"min"

"sum"

"avg"

"median"

"p001"

"p01"

"p05"

"p10"

"p25"

"p75"

"p90"

"p95"

"p99"

"p999"

"stddev"

"variance"

"COUNT_DISTINCT"

"MAX"

"MIN"

"SUM"

"AVG"

"MEDIAN"

"P001"

"P01"

"P05"

"P10"

"P25"

"P75"

"P90"

"P95"

"P99"

"P999"

"STDDEV"

"VARIANCE"

alias: optional string

keyType: optional "string" or "number" or "boolean"

One of the following:

"string"

"number"

"boolean"

datasets: optional array of string

Set the Datasets to query. Leave it empty to query all the datasets.

filterCombination: optional "and" or "or" or "AND" or "OR"

Set a Flag to describe how to combine the filters on the query.

One of the following:

"and"

"or"

"AND"

"OR"

filters: optional array of object { filterCombination, filters, kind } or object { key, operation, type, 2 more }

Configure the Filters to apply to the query. Supports nested groups via kind: group.

One of the following:

object { filterCombination, filters, kind }

filterCombination: "and" or "or" or "AND" or "OR"

One of the following:

"and"

"or"

"AND"

"OR"

filters: array of unknown

kind: "group"

WorkersObservabilityFilterLeaf object { key, operation, type, 2 more }

A filter condition applied to query results. Use the keys and values endpoints to discover available fields and their values before constructing filters.

key: string

operation: "includes" or "not_includes" or "starts_with" or 27 more

One of the following:

"includes"

"not_includes"

"starts_with"

"ends_with"

"regex"

"exists"

"is_null"

"in"

"not_in"

"eq"

"neq"

"gt"

"gte"

"lt"

"lte"

"="

"!="

">"

">="

"<"

"<="

"INCLUDES"

"DOES_NOT_INCLUDE"

"MATCH_REGEX"

"EXISTS"

"DOES_NOT_EXIST"

"IN"

"NOT_IN"

"STARTS_WITH"

"ENDS_WITH"

type: "string" or "number" or "boolean"

Data type of the filter field. Must match the actual type of the key being filtered.

One of the following:

"string"

"number"

"boolean"

kind: optional "filter"

Discriminator for leaf filter nodes. Always filter when present; may be omitted.

value: optional string or number or boolean

One of the following:

string

number

boolean

groupBys: optional array of object { type, value }

Define how to group the results of the query.

type: "string" or "number" or "boolean"

One of the following:

"string"

"number"

"boolean"

value: string

havings: optional array of object { key, operation, value }

Configure the Having clauses that filter on calculations in the query result.

key: string

operation: "eq" or "neq" or "gt" or 3 more

One of the following:

"eq"

"neq"

"gt"

"gte"

"lt"

"lte"

value: number

limit: optional number

Set a limit on the number of results / records returned by the query

maximum100

minimum0

needle: optional object { value, isRegex, matchCase }

Define an expression to search using full-text search.

value: string or number or boolean

maxLength1000

One of the following:

string

number

boolean

isRegex: optional boolean

matchCase: optional boolean

orderBy: optional object { value, order }

Configure the order of the results returned by the query.

value: string

Configure which Calculation to order the results by.

order: optional "asc" or "desc"

Set the order of the results

One of the following:

"asc"

"desc"

updated: string

updatedBy: string

QueryListResponse object { id, adhoc, created, 6 more }

id: string

adhoc: boolean

If the query wasnt explcitly saved

created: string

createdBy: string

description: string

maxLength1000

Query name

maxLength250

minLength1

parameters: object { calculations, datasets, filterCombination, 6 more }

calculations: optional array of object { operator, alias, key, keyType } or object { key, operator, alias, keyType }

Create Calculations to compute as part of the query.

One of the following:

object { operator, alias, key, keyType }

operator: "count" or "COUNT"

One of the following:

"count"

"COUNT"

alias: optional string

key: optional string

keyType: optional "string" or "number" or "boolean"

One of the following:

"string"

"number"

"boolean"

object { key, operator, alias, keyType }

key: string

operator: "uniq" or "max" or "min" or 33 more

One of the following:

"uniq"

"max"

"min"

"sum"

"avg"

"median"

"p001"

"p01"

"p05"

"p10"

"p25"

"p75"

"p90"

"p95"

"p99"

"p999"

"stddev"

"variance"

"COUNT_DISTINCT"

"MAX"

"MIN"

"SUM"

"AVG"

"MEDIAN"

"P001"

"P01"

"P05"

"P10"

"P25"

"P75"

"P90"

"P95"

"P99"

"P999"

"STDDEV"

"VARIANCE"

alias: optional string

keyType: optional "string" or "number" or "boolean"

One of the following:

"string"

"number"

"boolean"

datasets: optional array of string

Set the Datasets to query. Leave it empty to query all the datasets.

filterCombination: optional "and" or "or" or "AND" or "OR"

Set a Flag to describe how to combine the filters on the query.

One of the following:

"and"

"or"

"AND"

"OR"

filters: optional array of object { filterCombination, filters, kind } or object { key, operation, type, 2 more }

Configure the Filters to apply to the query. Supports nested groups via kind: group.

One of the following:

object { filterCombination, filters, kind }

filterCombination: "and" or "or" or "AND" or "OR"

One of the following:

"and"

"or"

"AND"

"OR"

filters: array of unknown

kind: "group"

WorkersObservabilityFilterLeaf object { key, operation, type, 2 more }

A filter condition applied to query results. Use the keys and values endpoints to discover available fields and their values before constructing filters.

key: string

operation: "includes" or "not_includes" or "starts_with" or 27 more

One of the following:

"includes"

"not_includes"

"starts_with"

"ends_with"

"regex"

"exists"

"is_null"

"in"

"not_in"

"eq"

"neq"

"gt"

"gte"

"lt"

"lte"

"="

"!="

">"

">="

"<"

"<="

"INCLUDES"

"DOES_NOT_INCLUDE"

"MATCH_REGEX"

"EXISTS"

"DOES_NOT_EXIST"

"IN"

"NOT_IN"

"STARTS_WITH"

"ENDS_WITH"

type: "string" or "number" or "boolean"

Data type of the filter field. Must match the actual type of the key being filtered.

One of the following:

"string"

"number"

"boolean"

kind: optional "filter"

Discriminator for leaf filter nodes. Always filter when present; may be omitted.

value: optional string or number or boolean

One of the following:

string

number

boolean

groupBys: optional array of object { type, value }

Define how to group the results of the query.

type: "string" or "number" or "boolean"

One of the following:

"string"

"number"

"boolean"

value: string

havings: optional array of object { key, operation, value }

Configure the Having clauses that filter on calculations in the query result.

key: string

operation: "eq" or "neq" or "gt" or 3 more

One of the following:

"eq"

"neq"

"gt"

"gte"

"lt"

"lte"

value: number

limit: optional number

Set a limit on the number of results / records returned by the query

maximum100

minimum0

needle: optional object { value, isRegex, matchCase }

Define an expression to search using full-text search.

value: string or number or boolean

maxLength1000

One of the following:

string

number

boolean

isRegex: optional boolean

matchCase: optional boolean

orderBy: optional object { value, order }

Configure the order of the results returned by the query.

value: string

Configure which Calculation to order the results by.

order: optional "asc" or "desc"

Set the order of the results

One of the following:

"asc"

"desc"

updated: string

updatedBy: string

ObservabilityShared Queries

Create a sharable link to a query result

POST/accounts/{account_id}/workers/observability/shared/query

View a query that has been shared

GET/accounts/{account_id}/workers/observability/shared/query/{id}

ModelsExpand Collapse

SharedQueryCreateResponse object { id }

id: string

Specify the ID of the shared query.

SharedQueryGetResponse object { run, statistics, agents, 6 more }

Complete results of a query run. The populated fields depend on the requested view type (events, calculations, invocations, traces, or agents).

run: object { id, accountId, dry, 8 more }

Represents a single execution of a query against Workers Observability data, including the query definition, execution status, and performance statistics.

id: string

Unique identifier for this query run.

accountId: string

Cloudflare account ID that owns this query run.

dry: boolean

Whether this was a dry run (results not persisted).

granularity: number

Number of time-series buckets used for the query. Higher values produce more detailed series data.

query: object { id, adhoc, created, 6 more }

A saved query definition with its parameters, metadata, and ownership information.

id: string

adhoc: boolean

If the query wasnt explcitly saved

created: string

createdBy: string

description: string

maxLength1000

Query name

maxLength250

minLength1

parameters: object { calculations, datasets, filterCombination, 6 more }

calculations: optional array of object { operator, alias, key, keyType } or object { key, operator, alias, keyType }

Create Calculations to compute as part of the query.

One of the following:

object { operator, alias, key, keyType }

operator: "count" or "COUNT"

One of the following:

"count"

"COUNT"

alias: optional string

key: optional string

keyType: optional "string" or "number" or "boolean"

One of the following:

"string"

"number"

"boolean"

object { key, operator, alias, keyType }

key: string

operator: "uniq" or "max" or "min" or 33 more

One of the following:

"uniq"

"max"

"min"

"sum"

"avg"

"median"

"p001"

"p01"

"p05"

"p10"

"p25"

"p75"

"p90"

"p95"

"p99"

"p999"

"stddev"

"variance"

"COUNT_DISTINCT"

"MAX"

"MIN"

"SUM"

"AVG"

"MEDIAN"

"P001"

"P01"

"P05"

"P10"

"P25"

"P75"

"P90"

"P95"

"P99"

"P999"

"STDDEV"

"VARIANCE"

alias: optional string

keyType: optional "string" or "number" or "boolean"

One of the following:

"string"

"number"

"boolean"

datasets: optional array of string

Set the Datasets to query. Leave it empty to query all the datasets.

filterCombination: optional "and" or "or" or "AND" or "OR"

Set a Flag to describe how to combine the filters on the query.

One of the following:

"and"

"or"

"AND"

"OR"

filters: optional array of object { filterCombination, filters, kind } or object { key, operation, type, 2 more }

Configure the Filters to apply to the query. Supports nested groups via kind: group.

One of the following:

object { filterCombination, filters, kind }

filterCombination: "and" or "or" or "AND" or "OR"

One of the following:

"and"

"or"

"AND"

"OR"

filters: array of unknown

kind: "group"

WorkersObservabilityFilterLeaf object { key, operation, type, 2 more }

A filter condition applied to query results. Use the keys and values endpoints to discover available fields and their values before constructing filters.

key: string

operation: "includes" or "not_includes" or "starts_with" or 27 more

One of the following:

"includes"

"not_includes"

"starts_with"

"ends_with"

"regex"

"exists"

"is_null"

"in"

"not_in"

"eq"

"neq"

"gt"

"gte"

"lt"

"lte"

"="

"!="

">"

">="

"<"

"<="

"INCLUDES"

"DOES_NOT_INCLUDE"

"MATCH_REGEX"

"EXISTS"

"DOES_NOT_EXIST"

"IN"

"NOT_IN"

"STARTS_WITH"

"ENDS_WITH"

type: "string" or "number" or "boolean"

Data type of the filter field. Must match the actual type of the key being filtered.

One of the following:

"string"

"number"

"boolean"

kind: optional "filter"

Discriminator for leaf filter nodes. Always filter when present; may be omitted.

value: optional string or number or boolean

One of the following:

string

number

boolean

groupBys: optional array of object { type, value }

Define how to group the results of the query.

type: "string" or "number" or "boolean"

One of the following:

"string"

"number"

"boolean"

value: string

havings: optional array of object { key, operation, value }

Configure the Having clauses that filter on calculations in the query result.

key: string

operation: "eq" or "neq" or "gt" or 3 more

One of the following:

"eq"

"neq"

"gt"

"gte"

"lt"

"lte"

value: number

limit: optional number

Set a limit on the number of results / records returned by the query

maximum100

minimum0

needle: optional object { value, isRegex, matchCase }

Define an expression to search using full-text search.

value:

isRegex: optional boolean

matchCase: optional boolean

orderBy: optional object { value, order }

Configure the order of the results returned by the query.

value: string

Configure which Calculation to order the results by.

order: optional "asc" or "desc"

Set the order of the results

One of the following:

"asc"

"desc"

updated: string

updatedBy: string

status: "STARTED" or "COMPLETED"

Current execution status of the query run.

One of the following:

"STARTED"

"COMPLETED"

timeframe: object { from, to }

Time range for the query execution

from: number

Start timestamp for the query timeframe (Unix timestamp in milliseconds)

to: number

End timestamp for the query timeframe (Unix timestamp in milliseconds)

userId: string

ID of the user who initiated the query run.

created: optional string

ISO-8601 timestamp when the query run was created.

statistics: optional object { bytes_read, elapsed, rows_read, abr_level }

Query performance statistics from the database (does not include network latency).

bytes_read: number

Number of uncompressed bytes read from the table.

elapsed: number

Time in seconds for the query to run.

rows_read: number

Number of rows scanned from the table.

abr_level: optional number

The level of Adaptive Bit Rate (ABR) sampling used for the query. If empty the ABR level is 1

updated: optional string

ISO-8601 timestamp when the query run was last updated.

statistics: object { bytes_read, elapsed, rows_read, abr_level }

Query performance statistics from the database. Includes execution time, rows scanned, and bytes read. Does not include network latency.

bytes_read: number

Number of uncompressed bytes read from the table.

elapsed: number

Time in seconds for the query to run.

rows_read: number

Number of rows scanned from the table.

abr_level: optional number

The level of Adaptive Bit Rate (ABR) sampling used for the query. If empty the ABR level is 1

agents: optional array of object { id, errors, models, 13 more }

Agent run summaries. Present when the query view is agents. Each entry represents one trace containing at least one agent invocation.

id: string

Pagination cursor derived from the first agent invocation in the run.

errors: array of string

Distinct errors reported by spans in the run.

models: array of string

Distinct models reported by chat spans across the runs trace.

providers: array of string

Distinct GenAI providers reported by chat spans in the run.

services: array of string

Worker services represented in the runs trace.

spans: number

Number of spans in the runs trace.

status: "completed" or "error"

Observed run status.

One of the following:

"completed"

"error"

traceDurationMs: number

Total trace duration in milliseconds.

traceEndMs: number

End of the runs trace as a Unix epoch in milliseconds.

traceId: string

Trace identifier for this agent run.

traceStartMs: number

Start of the runs trace as a Unix epoch in milliseconds.

agentId: optional string

ID from the earliest agent invocation that provides one.

agentName: optional string

Name from the earliest agent invocation that provides one.

conversationId: optional string

Conversation ID from the earliest invocation that provides one.

inputTokens: optional number

Input tokens summed across chat spans in the runs trace; informational, not billing data.

outputTokens: optional number

Output tokens summed across chat spans in the runs trace; informational, not billing data.

calculations: optional array of object { aggregates, calculation, series, alias }

Aggregated calculation results. Present when the query view is calculations. Contains computed metrics (count, avg, p99, etc.) with optional group-by breakdowns and time-series data.

aggregates: array of object { count, interval, sampleInterval, 2 more }

interval: number

sampleInterval: number

value: number

groups: optional array of object { key, value }

key: string

value: string or number or boolean

One of the following:

string

number

boolean

calculation: string

series: array of object { data, time }

data: array of object { count, interval, sampleInterval, 4 more }

interval: number

sampleInterval: number

value: number

firstSeen: optional string

groups: optional array of object { key, value }

key: string

value: string or number or boolean

One of the following:

string

number

boolean

lastSeen: optional string

time: string

alias: optional string

compare: optional array of object { aggregates, calculation, series, alias }

Comparison calculation results from the previous time period. Present when the compare option is enabled. Same structure as calculations.

aggregates: array of object { count, interval, sampleInterval, 2 more }

interval: number

sampleInterval: number

value: number

groups: optional array of object { key, value }

key: string

value: string or number or boolean

One of the following:

string

number

boolean

calculation: string

series: array of object { data, time }

data: array of object { count, interval, sampleInterval, 4 more }

interval: number

sampleInterval: number

value: number

firstSeen: optional string

groups: optional array of object { key, value }

key: string

value: string or number or boolean

One of the following:

string

number

boolean

lastSeen: optional string

time: string

alias: optional string

distribution: optional object { bins, bucketBoundaries, bucketMode, 2 more }

Bucketed 2D histogram of a numeric field over time. Present when chartType is distribution.

bins: array of string

Time-bucket labels (ISO-8601 strings), one per matrix column.

bucketBoundaries: array of number

Raw bucket edges in the values native unit, length buckets.length + 1. Used for the colour scale and percentile mapping.

bucketMode: "log" or "linear"

Bucketing scheme used to derive the boundaries. log produces geometric edges; linear produces fixed-width edges.

One of the following:

"log"

"linear"

buckets: array of string

Value-range labels, one per matrix row (e.g. 50100ms).

matrix: array of array of number

Sampling-corrected counts. matrix[bucketIdx][binIdx] is the estimated number of events in value-bucket bucketIdx during time-bin binIdx.

events: optional object { count, events, fields, series }

Individual event results. Present when the query view is events. Contains the matching log lines and their metadata.

Total number of events matching the query (may exceed the number returned due to limits).

events: optional array of object { "$metadata", dataset, source, 3 more }

List of individual telemetry events matching the query.

"$metadata": object { id, account, cloudService, 29 more }

Structured metadata extracted from the event. These fields are indexed and available for filtering and aggregation.

id: string

Unique event ID. Use as the cursor value for offset-based pagination.

account: optional string

Cloudflare account identifier.

cloudService: optional string

Cloudflare product that generated this event (e.g. workers, pages).

coldStart: optional number

exclusiveMinimum

minimum0

cost: optional number

Estimated cost units for this invocation.

exclusiveMinimum

minimum0

duration: optional number

Span duration in milliseconds.

exclusiveMinimum

minimum0

endTime: optional number

Span end time as a Unix epoch in milliseconds.

minimum0

error: optional string

Error message, present when the log represents an error.

errorTemplate: optional string

Templatized version of the error message used for grouping similar errors.

fingerprint: optional string

Content-based fingerprint used to group similar events.

level: optional string

Log level (e.g. log, debug, info, warn, error).

message: optional string

Log message text.

messageTemplate: optional string

Templatized version of the log message used for grouping similar messages.

metricName: optional string

Metric name when the event represents a metric data point.

origin: optional string

Origin of the event (e.g. fetch, scheduled, queue).

parentSpanId: optional string

Span ID of the parent span in the trace hierarchy.

provider: optional string

Infrastructure provider identifier.

rayId: optional string

Cloudflare Ray ID from the cf-ray header of the request that triggered the invocation.

region: optional string

Cloudflare data center / region that handled the request.

requestId: optional string

Cloudflare request ID that ties all logs from a single invocation together.

service: optional string

Worker script name that produced this event.

spanId: optional string

Span ID for this individual unit of work within a trace.

spanName: optional string

Human-readable name for this span.

stackId: optional string

Stack / deployment identifier.

startTime: optional number

Span start time as a Unix epoch in milliseconds.

minimum0

statusCode: optional number

HTTP response status code returned by the Worker.

exclusiveMinimum

minimum0

traceDuration: optional number

Total duration of the entire trace in milliseconds.

exclusiveMinimum

minimum0

traceId: optional string

Distributed trace ID linking spans across services.

transactionName: optional string

Logical transaction name for this request.

trigger: optional string

What triggered the invocation (e.g. GET /users, POST /orders, queue message).

type: optional string

Event type classifier (e.g. cf-worker-event, cf-worker-log).

url: optional string

Request URL that triggered the Worker invocation.

dataset: string

The dataset this event belongs to (e.g. cloudflare-workers).

source: string or map[unknown]

Raw log payload. May be a string or a structured object depending on how the log was emitted.

One of the following:

string

map[unknown]

timestamp: number

Event timestamp as a Unix epoch in milliseconds.

minimum0

"$containers": optional map[unknown]

Cloudflare Containers event information that enriches your logs for identifying and debugging issues.

"$workers": optional object { eventType, requestId, scriptName, 10 more } or object { cpuTimeMs, eventType, outcome, 14 more }

Cloudflare Workers event information that enriches your logs for identifying and debugging issues.

One of the following:

object { eventType, requestId, scriptName, 10 more }

eventType: "fetch" or "scheduled" or "alarm" or 9 more

One of the following:

"fetch"

"scheduled"

"alarm"

"cron"

"queue"

"email"

"tail"

"rpc"

"jsrpc"

"websocket"

"workflow"

"unknown"

requestId: string

scriptName: string

durableObjectId: optional string

entrypoint: optional string

event: optional map[unknown]

executionModel: optional "durableObject" or "stateless"

One of the following:

"durableObject"

"stateless"

outcome: optional string

preview: optional object { id, name, slug }

id: optional string

slug: optional string

scriptVersion: optional object { id, message, tag }

id: optional string

message: optional string

tag: optional string

spanId: optional string

traceId: optional string

truncated: optional boolean

object { cpuTimeMs, eventType, outcome, 14 more }

cpuTimeMs: number

eventType: "fetch" or "scheduled" or "alarm" or 9 more

One of the following:

"fetch"

"scheduled"

"alarm"

"cron"

"queue"

"email"

"tail"

"rpc"

"jsrpc"

"websocket"

"workflow"

"unknown"

outcome: string

requestId: string

scriptName: string

wallTimeMs: number

diagnosticsChannelEvents: optional array of object { channel, message, timestamp }

channel: string

message: string

timestamp: number

dispatchNamespace: optional string

durableObjectId: optional string

entrypoint: optional string

event: optional map[unknown]

executionModel: optional "durableObject" or "stateless"

One of the following:

"durableObject"

"stateless"

preview: optional object { id, name, slug }

id: optional string

slug: optional string

scriptVersion: optional object { id, message, tag }

id: optional string

message: optional string

tag: optional string

spanId: optional string

traceId: optional string

truncated: optional boolean

fields: optional array of object { key, type }

List of fields discovered in the matched events. Useful for building dynamic UIs.

key: string

Field name present in the matched events.

type: string

Data type of the field (string, number, or boolean).

series: optional array of object { data, time }

Time-series data for the matched events, bucketed by the query granularity.

data: array of object { aggregates, count, interval, 3 more }

aggregates: object { _count, _interval, _firstSeen, 2 more }

Deprecated_count: number

exclusiveMinimum

minimum0

Deprecated_interval: number

exclusiveMinimum

minimum0

Deprecated_firstSeen: optional string

Deprecated_lastSeen: optional string

Deprecatedbin: optional unknown

interval: number

sampleInterval: number

errors: optional number

groups: optional map[string or number or boolean]

Groups in the query results.

One of the following:

string

number

boolean

time: string

invocations: optional map[array of object { "$metadata", dataset, source, 3 more } ]

Events grouped by invocation (request ID). Present when the query view is invocations. Each key is a request ID mapping to all events from that invocation.

"$metadata": object { id, account, cloudService, 29 more }

Structured metadata extracted from the event. These fields are indexed and available for filtering and aggregation.

id: string

Unique event ID. Use as the cursor value for offset-based pagination.

account: optional string

Cloudflare account identifier.

cloudService: optional string

Cloudflare product that generated this event (e.g. workers, pages).

coldStart: optional number

exclusiveMinimum

minimum0

cost: optional number

Estimated cost units for this invocation.

exclusiveMinimum

minimum0

duration: optional number

Span duration in milliseconds.

exclusiveMinimum

minimum0

endTime: optional number

Span end time as a Unix epoch in milliseconds.

minimum0

error: optional string

Error message, present when the log represents an error.

errorTemplate: optional string

Templatized version of the error message used for grouping similar errors.

fingerprint: optional string

Content-based fingerprint used to group similar events.

level: optional string

Log level (e.g. log, debug, info, warn, error).

message: optional string

Log message text.

messageTemplate: optional string

Templatized version of the log message used for grouping similar messages.

metricName: optional string

Metric name when the event represents a metric data point.

origin: optional string

Origin of the event (e.g. fetch, scheduled, queue).

parentSpanId: optional string

Span ID of the parent span in the trace hierarchy.

provider: optional string

Infrastructure provider identifier.

rayId: optional string

Cloudflare Ray ID from the cf-ray header of the request that triggered the invocation.

region: optional string

Cloudflare data center / region that handled the request.

requestId: optional string

Cloudflare request ID that ties all logs from a single invocation together.

service: optional string

Worker script name that produced this event.

spanId: optional string

Span ID for this individual unit of work within a trace.

spanName: optional string

Human-readable name for this span.

stackId: optional string

Stack / deployment identifier.

startTime: optional number

Span start time as a Unix epoch in milliseconds.

minimum0

statusCode: optional number

HTTP response status code returned by the Worker.

exclusiveMinimum

minimum0

traceDuration: optional number

Total duration of the entire trace in milliseconds.

exclusiveMinimum

minimum0

traceId: optional string

Distributed trace ID linking spans across services.

transactionName: optional string

Logical transaction name for this request.

trigger: optional string

What triggered the invocation (e.g. GET /users, POST /orders, queue message).

type: optional string

Event type classifier (e.g. cf-worker-event, cf-worker-log).

url: optional string

Request URL that triggered the Worker invocation.

dataset: string

The dataset this event belongs to (e.g. cloudflare-workers).

source: string or map[unknown]

Raw log payload. May be a string or a structured object depending on how the log was emitted.

One of the following:

string

map[unknown]

timestamp: number

Event timestamp as a Unix epoch in milliseconds.

minimum0

"$containers": optional map[unknown]

Cloudflare Containers event information that enriches your logs for identifying and debugging issues.

"$workers": optional object { eventType, requestId, scriptName, 10 more } or object { cpuTimeMs, eventType, outcome, 14 more }

Cloudflare Workers event information that enriches your logs for identifying and debugging issues.

One of the following:

object { eventType, requestId, scriptName, 10 more }

eventType: "fetch" or "scheduled" or "alarm" or 9 more

One of the following:

"fetch"

"scheduled"

"alarm"

"cron"

"queue"

"email"

"tail"

"rpc"

"jsrpc"

"websocket"

"workflow"

"unknown"

requestId: string

scriptName: string

durableObjectId: optional string

entrypoint: optional string

event: optional map[unknown]

executionModel: optional "durableObject" or "stateless"

One of the following:

"durableObject"

"stateless"

outcome: optional string

preview: optional object { id, name, slug }

id: optional string

slug: optional string

scriptVersion: optional object { id, message, tag }

id: optional string

message: optional string

tag: optional string

spanId: optional string

traceId: optional string

truncated: optional boolean

object { cpuTimeMs, eventType, outcome, 14 more }

cpuTimeMs: number

eventType: "fetch" or "scheduled" or "alarm" or 9 more

One of the following:

"fetch"

"scheduled"

"alarm"

"cron"

"queue"

"email"

"tail"

"rpc"

"jsrpc"

"websocket"

"workflow"

"unknown"

outcome: string

requestId: string

scriptName: string

wallTimeMs: number

diagnosticsChannelEvents: optional array of object { channel, message, timestamp }

channel: string

message: string

timestamp: number

dispatchNamespace: optional string

durableObjectId: optional string

entrypoint: optional string

event: optional map[unknown]

executionModel: optional "durableObject" or "stateless"

One of the following:

"durableObject"

"stateless"

preview: optional object { id, name, slug }

id: optional string

slug: optional string

scriptVersion: optional object { id, message, tag }

id: optional string

message: optional string

tag: optional string

spanId: optional string

traceId: optional string

truncated: optional boolean

traces: optional array of object { rootSpanName, rootTransactionName, service, 6 more }

Trace summaries matching the query. Present when the query view is traces. Each entry represents a distributed trace with its spans, duration, and services involved.

rootSpanName: string

Name of the root span that initiated the trace.

rootTransactionName: string

Logical transaction name for the root span.

service: array of string

List of Worker services involved in the trace.

spans: number

Total number of spans in the trace.

traceDurationMs: number

Total duration of the trace in milliseconds.

traceEndMs: number

Trace end time as a Unix epoch in milliseconds.

traceId: string

Unique identifier for the distributed trace.

traceStartMs: number

Trace start time as a Unix epoch in milliseconds.

errors: optional array of string

Error messages encountered during the trace, if any.

Observability

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