lidge-jun/opencodex: Universal provider proxy for OpenAI Codex & Claude Code — use any LLM (Claude, Gemini, Grok, DeepSeek, Ollama…) with Codex CLI, App, SDK, and Claude Code · GitHub

Universal provider proxy for OpenAI Codex, Claude Code, Claude Desktop & Grok Build
Two commands, and every one of them runs any LLM you point it at.

npm install -g @bitkyc08/opencodex
ocx start        # proxy + dashboard on localhost:10100

Claude Code, running any model. The picker is stock Claude Code. The brain behind it isn't.	Codex, running any model. Pick a provider and go — same workflow, different brain.
Claude Desktop, running any model. Opus answers, then hands the task to a GPT-5.6 Sol subagent.	Grok Build, running any model. Sol drives the session and calls a Kimi K3 subagent.

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opencodex is a lightweight local proxy that translates Codex's Responses API into whatever your provider speaks — streaming, tool calls, reasoning tokens, images, in both directions. Use Claude, Gemini, Grok, GLM, DeepSeek, Kimi, Qwen, Ollama, or any other LLM with Codex, Claude Code, Claude Desktop, and Grok Build. It can also manage a ChatGPT account pool for Codex auth: add accounts, refresh their quotas in the dashboard, and let new sessions auto-route to the lowest-usage healthy account while existing threads stay pinned to the account that started them.

npm install -g @bitkyc08/opencodex   # Node 18+; the Bun runtime is bundled automatically
ocx start                            # or `ocx service` to run it in the background

macOS / Linux:

curl -fsSL https://bun.sh/install | bash && ~/.bun/bin/bun upgrade --canary
git clone https://github.com/lidge-jun/opencodex.git
cd opencodex && ~/.bun/bin/bun install
~/.bun/bin/bun run src/cli/index.ts start

Windows (PowerShell):

irm bun.sh/install.ps1 | iex; bun upgrade --canary
git clone https://github.com/lidge-jun/opencodex.git
cd opencodex; bun install
bun run src/cli/index.ts start

Source install runs the latest dev branch with Bun canary. Memory ownership patches, runtime GC improvements, and unreleased fixes are available here before they reach the npm package.

Open http://localhost:10100 and configure everything in the web dashboard — add providers (40+ built-ins, or any OpenAI-compatible endpoint), pick models, manage accounts. ocx gui re-opens the dashboard at any time. It can also manage a ChatGPT account pool for Codex auth. Add multiple ChatGPT / Codex accounts, refresh their 5h / weekly / 30d quota in the dashboard. Under quota routing, new sessions can use the lowest-usage healthy account; round-robin and fill-first use their own policies. Existing Codex threads normally retain affinity to the account that started them, so long SSH, tmux, or mobile-connected sessions do not jump accounts mid-conversation — but quota re-evaluation, failover, account exclusion, affinity expiry, or 401/403 and 429 recovery can rebind them. Give the accounts a selection order when one of them — usually your Codex Desktop login — should only be reached for once the others are drained.

npm install -g @bitkyc08/opencodex
ocx start     # or `ocx service`
ocx init      # interactive setup: writes ~/.opencodex/config.json and wires Codex

ocx init never starts the proxy; start it first (or after — either order works, but headless commands like ocx provider add and ocx combo set talk to the live proxy and exit nonzero when it is unreachable). ocx status / ocx doctor / ocx health report the running state.

Agents installing or running opencodex: read AGENTS_INSTALL.md. An interactive ocx start may ask once whether to star this repository — that is the user's decision, never an agent's. The CLI suppresses the prompt for agent-driven runs and the API refuses them with 403 agent_consent_required.

Requires Node 18+. The Bun runtime is bundled on npm install — no separate Bun install needed, no WSL needed on Windows. If npm blocked the bundled runtime's install scripts, see the installation docs.

• Use any LLM with Codex, Claude Code, Claude Desktop, and Grok Build — 40+ providers out of the box, each keeping its own native UI.
• Pool ChatGPT accounts safely — thread affinity, quota-aware auto-switching, cooldown and fail-closed auth handling.
• Combos — one virtual model id with failover or weighted round-robin across providers. See the combo guide.
• Sub-agents on any model — feature routed models in Codex's sub-agent picker, with v1/v2 surface control and fallback chains. See the sub-agent guide.
• Log in once, skip the API key — OAuth for xAI, Anthropic, and Kimi; or forward codex login, paste a key, or use ${ENV_VAR} references.
• Web search & vision sidecars — non-OpenAI models get real web search and image understanding through a sidecar over your ChatGPT login.
• See what's happening — the dashboard shows providers, OAuth status, model selection, and a live request log with cache token counts.
• Clean exit, zero residue — ocx stop restores Codex to its original configuration.
• Bounded memory ownership — every long-lived cache, ring buffer, and protocol-translation store has a finite cap, byte budget, or active reconciliation. No unbounded Map or Set survives a config reload.

OpenCodex tracks 36 categories of process-retained state. Each has a documented bound:

• 12 retained stores (request log, debug rings, image cache, model cache, vision descriptions, cursor blobs, responses continuation, etc.) are byte-accounted and evicted by the app-owned memory budget (default 256 MiB).
• 4 observed buffers (translator accumulators, image/OAuth/Grok tails) are monitored for in-flight byte pressure without eviction.
• 24 state-store registrations handle expiry sweeps (60 s interval) and config-generation reconciliation so stale provider/account keys are removed.
• Path and fingerprint memos (workspace metadata, hardened identities, installation salts, mode-hint capabilities) use insertion-order LRU caps (8–128 entries).
• Model-cache generation tombstones are deleted after reconciliation; a global generation increment prevents stale in-flight discoveries from repopulating removed providers.
• Lab event-id deduplication runs under a ledger lock from disk, with no process-level RAM index.

Run GET /api/system/memory (with the admin token) to inspect live retained bytes, eviction counters, and watchdog samples.

Target any configured provider and model with the provider/model syntax:

codex -m "anthropic/claude-opus-5" "Explain this stack trace"
codex -m "google/gemini-3-pro" "Write unit tests for auth.ts"
codex -m "ollama/llama3" "Refactor this function"

Omit the provider/ prefix to use the default provider or auto-match by model name pattern. Provider model ids containing / are exposed with inner slashes aliased to -; the raw full-slash form keeps working too. Details: model routing docs.

OpenAI (ChatGPT login or API key), Anthropic, Google Gemini, xAI, Kimi, Azure OpenAI, Ollama (local + Cloud), Cursor (experimental), and every OpenAI-compatible endpoint — plus DeepSeek, Groq, OpenRouter, Together, Fireworks, Cerebras, Mistral, Hugging Face, NVIDIA NIM, MiniMax, Qwen Cloud, SiliconFlow, and more. Full list: ocx init or the provider docs.

ocx init                       # interactive setup (writes config, wires Codex, offers the shim)
ocx start [--port 10100]       # start the proxy in the foreground
ocx stop                       # stop + restore native Codex
ocx service [install|start|stop|status|uninstall|remove]  # background service
ocx codex-shim install         # start the proxy on demand whenever `codex` launches
ocx health [--json]            # check immediate proxy liveness
ocx ready [--json] [--wait [--timeout <seconds>]]  # check post-sync readiness
ocx status                     # is the proxy running?
ocx gui                        # open the web dashboard
ocx provider <...>             # manage providers (list/add/edit/test/remove)
ocx account <...>              # manage ChatGPT accounts & API-key pools
ocx combo <...>                # manage failover / round-robin combos
ocx v2 <...>                   # multi-agent v1/v2 surface controls
ocx update [--tag preview]     # update opencodex

Unpinned starts may pick another free port if the preferred one is busy; an explicit --port never hops. Full reference: CLI docs.

GET /healthz reports immediate proxy liveness. The unauthenticated GET /readyz endpoint reports post-sync readiness with the sanitized JSON identity {service, version, uptime, pid, port, status}. It returns 200 when status is ready; pending and terminal failed return 503 with Retry-After: 1.

ocx ready [--json] [--wait [--timeout <seconds>]] performs one probe by default. --wait polls for up to 45 seconds by default, but exits immediately when it observes terminal failed; --timeout <seconds> sets a 1–300 second limit, requires --wait, and accepts only positive integers. CLI --json output is {ready, status, pid, port}, where status is ready, pending, failed, or unreachable.

An older proxy without /readyz fails closed as unreachable with exit 1, while ocx health remains compatible.

Use the service (ocx service) for an always-on proxy that restarts on crash. Use the shim (ocx codex-shim install) for lightweight, on-demand startup without a background daemon. Remove them with ocx service uninstall / ocx codex-shim uninstall.

ocx uninstall                  # stop, remove service/shim, restore native Codex, clean up state
npm uninstall -g @bitkyc08/opencodex

By default opencodex binds to 127.0.0.1 and needs no extra authentication. Binding beyond loopback ("hostname": "0.0.0.0") requires a bearer token — the proxy refuses to start without OPENCODEX_API_AUTH_TOKEN, and every client request must carry it as x-opencodex-api-key. Details: configuration reference.

The public docs — install, providers, routing, combos, sub-agents, sidecars, integrations, and the CLI/config/management-API references — are built from docs-site/ and published to opencodex.me.

Maintainer source-of-truth notes live under structure/, contributor setup in CONTRIBUTING.md, and security reporting in SECURITY.md. Report undisclosed vulnerabilities privately through GitHub private vulnerability reporting, not a public issue.

Source development requires the bun CLI on your PATH. This is separate from the published npm package's bundled Bun runtime, which is used only by installed ocx commands.

git clone https://github.com/lidge-jun/opencodex.git
cd opencodex
bun install
bun run typecheck
bun run test

See Contributing.

opencodex is an independent, community-maintained project and is not affiliated with or endorsed by OpenAI, Anthropic, or any other provider.

Some providers — notably Anthropic (Claude) — may suspend or restrict accounts that route API traffic through third-party proxies. Use at your own risk (UAYOR). Before connecting a provider, review its Terms of Service to confirm that proxy-based access is permitted. The opencodex maintainers are not responsible for any account actions taken by upstream providers.

MIT