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OpenAPI 3.x Specification Validator
x402
OpenAPI 3.x Specification Validator is a paid API for AI agents from api.strale.io, paid per call via x402, $0.054001/call, status unknown (last checked 2026-09-13).
Validates an OpenAPI 3.x specification by checking required fields, endpoint definitions, and schema references for correctness.
Price / call$0.054001
Success—
StatusUnknown
How this service works
Validate an OpenAPI 3.x specification. Checks required fields, endpoint definitions, schema references. Algorithmic.
Output
Returns a validation report indicating whether the OpenAPI 3.x spec is valid, listing any errors found in required fields, endpoint definitions, or schema references.
Example use cases
Example prompt
“Can you validate this OpenAPI 3.x spec and tell me if there are any errors with required fields, endpoint definitions, or schema references? Here's the spec: {"openapi":"3.0.0","info":{"title":"My API","version":"1.0.0"},"paths":{}}”
Technical details
Endpoint
GEThttps://api.strale.io/x402/openapi-validateWhen to prefer
Use this endpoint when you need to programmatically validate an OpenAPI 3.x specification for correctness — checking required fields, endpoint definitions, and schema references — especially in CI/CD pipelines or agent workflows that generate or consume API specs.
Side effects
- Invalid or malformed JSON spec string causes parsing error
- Missing 'spec' query parameter returns error
- OpenAPI version other than 3.x may not be fully supported
- Extremely large specs may timeout or be truncated
Input
{
"spec": "{\"openapi\":\"3.0.0\",\"info\":{\"title\":\"Sample API\",\"version\":\"1.0.0\"},\"paths\":{\"/items\":{\"get\":{\"summary\":\"Get items\",\"responses\":{\"200\":{\"description\":\"Successful response\",\"content\":{\"application/json\":{\"schema\":{\"type\":\"array\",\"items\":{\"type\":\"object\",\"properties\":{\"id\":{\"type\":\"integer\"},\"name\":{\"type\":\"string\"}}}}}}}}}}}}"
}Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object |
Output
{
"_meta": {
"payment": {
"method": "x402",
"price_usd": 0.054000000000000006,
"settlement_id": "0xcd951f67ad2ce38f346090d62a639f83d896228058e8574373c87e56493a6426"
},
"capability": "openapi-validate",
"latency_ms": 0,
"provenance": {
"source": "algorithmic",
"fetched_at": "2026-06-17T04:11:39.033Z"
}
},
"valid": true,
"errors": [],
"warnings": [
{
"path": "/items.get",
"message": "Missing 'operationId' (recommended)"
},
{
"path": "/servers",
"message": "No 'servers' defined — consumers won't know the base URL"
}
],
"error_count": 0,
"schema_count": 0,
"warning_count": 2,
"endpoint_count": 1,
"version_detected": "3.0.0"
}Tags
x402
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