Api Endpoint

x402.freeq.one

OpenAPI Changelog Generator: Diff two OpenAPI specs and generate a structured breaking-change changelog (no LLM — deterministic diff). Provide base_spec_url and new_spec. Pay per call in USDC on Base…

Open interactive test console

Offering

Provider: x402.freeq.one
Method: GET
Offering type: Api Endpoint
Transport type: http
Category: Development
Delivery: Not provided
Pricing model: Not provided
x402 version: 2

Endpoint context

URL: https://x402.freeq.one/tools/changelog_openapi
MIME type: Not provided
First seen: 2026-10-16T02:14:58.303Z
Last seen: 2026-11-05T00:42:44.247Z
Tags: None supplied

Website

Payment pricing

x402 payment terms are the authoritative price for calling this endpoint.

Payment option 1: 0.005 USDC
Atomic price: 5000 · Network: eip155:8453 · Asset: USDC · Scheme: exact

Raw x402 terms

[
  {
    "scheme": "exact",
    "network": "eip155:8453",
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "amount": "5000",
    "payTo": "0x90b0dC893406d6eA63bb077ED59F5e8340f98d84"
  }
]

Observed health

Status: Healthy
Latest latency: 103 ms
Average latency: 261 ms
HTTP status: 402
Last checked: 2026-11-05T00:42:44.241Z
Reachability: 100% over 14 checks

Latency is measured to the first response headers. A reachable result does not verify response accuracy or merchant identity.

Input schema

{
  "type": "object",
  "properties": {
    "type": {
      "type": "string",
      "const": "mcp"
    },
    "tool": {
      "type": "string",
      "description": "Tool name to call"
    },
    "inputSchema": {
      "type": "object",
      "description": "Arguments object matching the tool's input schema (see GET /tools)"
    },
    "body": {
      "type": "object",
      "description": "Diff two OpenAPI specs and generate a structured breaking-change changelog (no LLM — deterministic diff). Provide base_spec_url and new_spec.",
      "properties": {
        "base_spec_url": {
          "type": "string",
          "description": "URL of the base (old) OpenAPI spec",
          "example": "https://petstore3.swagger.io/api/v3/openapi.json"
        },
        "new_spec": {
          "type": "object",
          "description": "New OpenAPI specification as a JSON object",
          "example": {
            "openapi": "3.1.0",
            "info": {
              "title": "My API v2",
              "version": "2.0.0"
            },
            "paths": {}
          }
        }
      }
    }
  }
}

Output schema

{
  "type": "object",
  "properties": {
    "type": {
      "type": "string",
      "const": "json"
    },
    "example": {
      "type": "object",
      "properties": {
        "result": {
          "description": "Tool output (JSON)"
        }
      }
    }
  }
}