the402 endpoint detail

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agent402.tools api openapi-lint

https://agent402.tools/api/openapi-lint

payable

Score an OpenAPI 3.x or Swagger 2.x spec on agent-readiness — i.e. does an LLM-driven caller have what it needs to call the API correctly without guessing. Returns a 0..100 score, severity counts, and a structured list of violations with stable ru...

We sent a real POST request to this endpoint and it answered 402 with payment requirements we could parse.
Price
$0.002
Network
base
Pay to
0xaBF4FAbd7c416fB67202E5f9002389Fc75e2a9D0
Spec dialect
v2 (declares x402Version 2)
Transport
PAYMENT-REQUIRED header
HTTP method
POST
Response latency
91 ms
Payment options
12 usable of 12
Last checked
2026-08-10T09:17:42.548Z (1d ago)
Category
ai-inference

Re-check it yourself:
curl "https://api.the402.dev/validate?url=https%3A%2F%2Fagent402.tools%2Fapi%2Fopenapi-lint"