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OpenAPI $ref Inliner / Resolver
x402
OpenAPI $ref Inliner / Resolver is a paid API for AI agents from agent402.tools, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-15).
Resolves and inlines all local $ref pointers in an OpenAPI 3.x or Swagger 2.x document, producing a fully self-contained spec with no unresolved references.
Price / call$0.001
Success—
StatusUnknown
How this service works
Inline every local `$ref` in an OpenAPI 3.x or Swagger 2.x document so downstream tools see a self-contained spec. Resolves `#/components/...` (OpenAPI) and `#/definitions/...` (Swagger) JSON-pointer refs anywhere in the document, including inside components themselves. Per-branch cycle detection: if A→B→A, the second A is left as a `$ref` and recorded under `circular`. External refs (http://, file://, ./other.yaml) are never fetched - they're reported under `external` and left as-is.
Output
A fully resolved OpenAPI or Swagger document returned as a JSON object, where every local $ref (e.g. #/components/schemas/Foo or #/definitions/Bar) has been replaced with the actual inlined schema content, making the document self-contained and ready for downstream tools.
Example use cases
Example prompt
“Take this OpenAPI 3.x spec and inline all the local $ref pointers so I get back a fully self-contained document with no unresolved references — here's the spec: { ... }”
Technical details
Endpoint
POSThttps://agent402.tools/api/openapi-resolve-refsWhen to prefer
Use this endpoint when your OpenAPI 3.x or Swagger 2.x document uses local $ref pointers that confuse downstream code generators, validators, or documentation tools. Ideal when you need a flat, portable spec with no external dependencies on shared component sections.
Side effects
- Circular $ref chains may cause infinite recursion or an error response
- Invalid JSON string input returns a parse error
- Non-OpenAPI/Swagger documents may yield unexpected or partial resolution
- External $ref URLs (non-local) are not resolved and remain as-is
- Malformed $ref pointers that don't match #/components/... or #/definitions/... are left unresolved
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| spec | — | OpenAPI/Swagger document (object or JSON string) |
Output
Schema · Response
{
"type": "json",
"example": {
"spec": {
"info": {
"title": "Demo",
"version": "1.0.0"
},
"paths": {
"/users/{id}": {
"get": {
"responses": {
"200": {
"content": {
"application/json": {
"schema": {
"type": "object",
"properties": {
"id": {
"type": "string"
},
"name": {
"type": "string"
}
}
}
}
},
"description": "ok"
}
},
"parameters": [
{
"in": "path",
"name": "id",
"schema": {
"type": "string"
},
"required": true
}
]
}
}
},
"openapi": "3.0.0",
"components": {
"schemas": {
"User": {
"type": "object",
"properties": {
"id": {
"type": "string"
},
"name": {
"type": "string"
}
}
}
},
"parameters": {
"UserId": {
"in": "path",
"name": "id",
"schema": {
"type": "string"
},
"required": true
}
}
}
},
"circular": [],
"external": [],
"resolved": 2,
"unresolved": []
}
}Tags
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