@async/api-contract publishes semantic API surfaces, schema metadata, operation contracts, CLI/dashboard/MCP projection metadata, deterministic generators, review ledgers, and impact checks for Async packages.

pnpm run pipeline:verify
pnpm run pipeline:api-surface
pnpm run pipeline:api-surface:generate
pnpm run pipeline:github:check
pnpm run pipeline:sync:check
pnpm run release:check

pnpm add @async/api-contract

• Combination examples show compatibility-only, schema-only, programmatic API, CLI, dashboard, MCP, schema projection, and full-stack usage.

• Define schema metadata with @async/api-contract/schema.
• Define one operation contract with @async/api-contract/interface.
• Define CLI, dashboard, and MCP projections with @async/api-contract/projection.
• Bind programmatic handlers with bindApiHandlers().
• Generate api-contract.json, API_SURFACE.md, CLI descriptors, dashboard manifests, MCP descriptors, MCP stdio server source, machine CLI routers, and typed clients from the same source.
• Let dashboards call machine-stable CLI JSON commands instead of scraping human prompt output.
• Let generated MCP tools call invokeOperation() instead of duplicating handler logic.

@async/api-contract
@async/api-contract/schema
@async/api-contract/interface
@async/api-contract/projection
@async/api-contract/generators
@async/api-contract/types

• API_SURFACE.md is the generated review ledger.
• api-contract.json is the checked manifest that produces the ledger.
• README.md has the public API and CLI examples.