Catch breaking API changes before they ship.
Deterministic OpenAPI contract analysis for CI pipelines and autonomous agents. No model inference in the compatibility verdict.
Paths, operations, parameters, required fields, request types and removed success responses.
Risk score, additive changes, semver recommendation and CI pass/fail JSON.
POST old and new OpenAPI specs; receive a bounded deterministic verdict.
After PayPal reports a completed payment for product MF-CG-30D-10K, your API key is provisioned automatically and sent to the PayPal payer email. Reconciliation runs at least hourly.
Try it now — no signup
The public demo is intentionally bounded to 50 KB and 20 paths per specification. Paste two small OpenAPI JSON documents and see the deterministic compatibility verdict immediately.
Demo result will appear here.
API
POST https://tutevpsjeewjulryvvdo.supabase.co/functions/v1/marketforge-api-contract-guard
x-api-key: mf_live_...
content-type: application/json
{
"old_spec": { "openapi": "3.1.0", "paths": {} },
"new_spec": { "openapi": "3.1.0", "paths": {} }
}
The response includes verdict, risk_score, recommended_semver_bump, breaking, additive, ci_gate, and remaining quota.
AI agent / MCP
Remote MCP endpoint: https://tutevpsjeewjulryvvdo.supabase.co/functions/v1/marketforge-mcp. Discovery and tool listing are free; tool execution uses the same paid X-API-Key. Supports MCP 2026-07-28 and 2025-11-25.
Remote MCP https://tutevpsjeewjulryvvdo.supabase.co/functions/v1/marketforge-mcp Header: X-API-Key: mf_live_...
Boundaries
External $ref documents are not fully resolved. Semantic behavior changes that do not alter the analyzed OpenAPI contract may not be detected. Vendor extensions are not treated as breaking unless they alter standard analyzed fields.