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x402-gateway changelog_openapi
x402
x402-gateway changelog_openapi is a paid API for AI agents from x402.freeq.one, paid per call via x402, $0.005/call, status unknown (last checked 2026-09-13).
Generates a structured changelog from an OpenAPI specification, diffing versions to surface added, changed, or removed endpoints and schemas
Price / call$0.005
Success—
StatusUnknown
How this service works
Pay-per-call MCP gateway: 12 tools (markdown, token_price, wallet_portfolio, whale_alerts, cross_chain_balance, changelog_openapi, changelog_git, mermaid, html_to_markdown, qr_generator, og_image_generator, jobs). Per-tool prices on Base via the Coinbase CDP x402 facilitator: markdown=$0.001, token_price=$0.0005, wallet_portfolio=$0.002, whale_alerts=$0.002, cross_chain_balance=$0.002, changelog_openapi=$0.005, changelog_git=$0.005, mermaid=$0.005, html_to_markdown=$0.001, qr_generator=$0.001, og_image_generator=$0.001, jobs=$0.002. MCP flat rate $0.001.
Output
A structured changelog derived from diffing two OpenAPI specifications, listing added, modified, and removed endpoints and schema changes, including breaking change indicators, formatted for developer consumption.
Example use cases
API release notes for v2 launch
“I'm releasing v2 of my API — can you diff these two OpenAPI specs and give me a changelog listing every new endpoint, every removed endpoint, and any parameter changes? Old spec: https://api.myservice.com/v1/openapi.json, new spec: https://api.myservice.com/v2/openapi.json”
Breaking change audit before deploy
“Before I deploy this update, can you compare my current OpenAPI spec with the new one and flag any breaking changes — removed endpoints, changed required parameters, or altered response schemas? I'll paste both specs.”
Auto-generate developer-facing changelog
“I need to write a developer changelog for my latest API version. Can you take my two OpenAPI specs — the previous release and the current one — and produce a structured, human-readable list of what changed, grouped by added, modified, and deprecated endpoints?”
Technical details
Endpoint
POSThttps://x402.freeq.one/tools/changelog_openapiWhen to prefer
Choose this endpoint when you need to automatically generate a changelog or detect breaking changes between two versions of an OpenAPI specification, especially in CI/CD pipelines or developer tooling workflows. It is ideal when you want a pay-per-call, no-subscription approach to API diffing without standing up your own diffing infrastructure.
Side effects
- Invalid or unparseable OpenAPI spec returns an error
- Missing required spec input causes a 400-level error
- Network timeout if spec URLs are slow to fetch
- Specs with identical content return an empty or no-change changelog
- Malformed JSON/YAML in spec causes parse failure
- Payment not included or insufficient funds returns 402
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| new_spec | object | New OpenAPI specification as a JSON object |
| base_spec_url | string | URL of the base (old) OpenAPI spec |
Output
Schema · Response
{
"type": "json",
"example": {
"result": {}
}
}Tags
x402
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