Api Contract Validator
Hook up contract validation MCP tools so your agent checks OpenAPI or API agreements against implementations before you ship.
Overview
api-contract-validator is a MCP server for the Ship phase that lets agents validate API contracts against specs over streamable-http.
What is this MCP server?
- Remote api-contract-validator MCP on Cloudflare Workers (streamable-http)
- Agent-invokable contract checks for API specs versus live or staged behavior
- Supports solo builders who maintain OpenAPI alongside fast agent-generated route changes
- Complements api-diff-monitor and changelog-tracker in the lazy-mac API suite
- MCP 2025-09-29 server manifest version 1.0.0
- Server version 1.0.0
- Hosted streamable-http remote on Cloudflare Workers
- Source: github.com/lazymac2x/api-contract-validator-api
What problem does it solve?
Agent-assisted refactors often ship subtle contract breaks because OpenAPI and code diverge without a quick validation pass.
Who is it for?
API and SaaS builders who keep machine-readable contracts and want agent-driven validation without switching to a separate desktop app.
Skip if: Static sites with no APIs, or teams that already enforce 100% contract coverage in CI and do not want remote validation.
What do I get? / Deliverables
Your agent can invoke validator tools so mismatches surface during testing before customers hit 4xx surprises.
- MCP-registered contract validation workflow
- Agent-reported spec versus implementation discrepancies
- Clearer ship/no-ship signal before tagging a release
Recommended MCP Servers
Journey fit
How it compares
Remote MCP contract validator, not a local Postman collection or a generic code-review skill.
Common Questions / FAQ
Who is api-contract-validator for?
Solo and indie API builders who use OpenAPI or similar contracts and want Claude Code, Cursor, or Codex to validate them via MCP.
When should I use api-contract-validator?
Use it in Ship testing and late Build integration hardening whenever you change routes, schemas, or client SDKs tied to a published contract.
How do I add api-contract-validator to my agent?
Add https://api.lazy-mac.com/api-contract-validator/mcp as a streamable-http MCP remote in your agent configuration and enable the server in your project.