claude

api-contract-keeper

Keeps your API and its spec in sync: detects and fixes OpenAPI/GraphQL spec-vs-code drift, hardens endpoints with request validation, RFC 9457 error envelopes and idempotency, guards against breaking changes, and audits job-queue reliability

3 on GitHubby Sigistryv1.0.0MITupdated yesterdayapi
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Plugin api-contract-keeper from marketplace sigistry in sigistry/marketplace. Commands read from the repo's manifest — yesterday.

This plugin runs code on your machine — its hooks fire automatically on events like tool use. The exact commands are listed below; read them before installing.

What it installs

Skills (4)

  • error-envelope

    This skill should be used when the user mentions "error handling", "problem details", "rfc 9457", "rfc 7807", "request validation", "api errors", "zod", "pydantic", "class-validator", "error response format", "problem+json", "validation error", or making an API return consistent, machine-readable er

  • idempotency-patterns

    This skill should be used when the user mentions "idempotency", "idempotency key", "retries", "exactly once", "double charge", "pagination", "cursor", "offset", "rate limit", "rate limiting", "Retry-After", "safe retries", or making an unsafe HTTP method safe to retry. It provides idempotency-key st

  • job-reliability

    This skill should be used when the user mentions "background jobs", "queue", "worker", "dead letter", "DLQ", "retry", "at-least-once", "exactly once", "outbox", "idempotent consumer", "visibility timeout", "BullMQ", "Celery", "Sidekiq", "SQS", "Pub/Sub", "Kafka", or "RabbitMQ", or auditing backgroun

  • openapi-drift

    This skill should be used when the user mentions "openapi", "swagger", "spec drift", "api contract", "breaking change", "oasdiff", "graphql schema", "api versioning", "the docs don't match the code", "requestBody", "response schema", or reconciling an API specification with its handler code. It prov

Slash commands (3)

  • /api-contract-keeper:harden-endpoint

    Add production hardening to an endpoint, validation, RFC 9457 errors, idempotency, pagination, rate-limit headers

  • /api-contract-keeper:spec-sync

    Detect drift between the API spec (OpenAPI/GraphQL) and handler code, then reconcile both sides

  • /api-contract-keeper:version-guard

    Classify API-surface changes as breaking or non-breaking and recommend a semver bump

Subagents (2)

  • drift-reconciler

    Use this agent when an OpenAPI/Swagger or GraphQL spec has drifted from the handler code and needs to be reconciled, an undocumented endpoint, a param the code accepts but the spec omits, a response field the code returns that the schema does not declare, a status code or nullability mismatch, or a

  • queue-doctor

    Use this agent when background-job or message-consumer code needs an at-least-once reliability audit, a worker with no dead-letter queue, no idempotency/dedup store, no retry backoff, an ack before the work is done, or an event published without a transactional outbox. Trigger phrases include "audit

Hooks (1)

  • PostToolUse

    node "${CLAUDE_PLUGIN_ROOT}/hooks/handler-detect.mjs"

View source on GitHub sigistry.com

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