APIs & Agentic AI

OpenAPI linter

Lint an OpenAPI 3.x spec for the things that break downstream — missing operationIds, undeclared path parameters, operations with no success response.

OpenAPI document (YAML or JSON)

53 lines · 1,121 characters

openapi: 3.0.3
info:
  title: Orders API
  version: 1.2.0
servers:
  - url: https://api.example.com/v1
components:
  securitySchemes:
    bearerAuth:
      type: http
      scheme: bearer
  schemas:
    Order:
      type: object
      properties:
        id: { type: string }
security:
  - bearerAuth: []
paths:
  /orders:
    get:
      operationId: listOrders
      summary: List orders
      tags: [orders]
      responses:
        '200': { description: OK }
    post:
      summary: Create an order
      tags: [orders]
      requestBody:
        content:
          application/json:
            schema: { $ref: '#/components/schemas/Order' }
      responses:
        '201': { description: Created }
  /orders/{orderId}:
    get:
      operationId: listOrders
      summary: Get one order
      tags: [orders]
      responses:
        '200': { description: OK }
  /orders/{orderId}/cancel:
    post:
      operationId: cancelOrder
      parameters:
        - name: orderId
          in: path
          required: true
          schema: { type: string }
      responses:
        '409': { description: Already shipped }

Inspection files can contain the original data and identifiers. Review them before sharing; downloads are processed locally. This is a parser inspection, not certification.

A linter rather than a renderer — editors already show you the endpoints. These checks catch what actually causes trouble downstream: missing operationId (every generated SDK method renames itself when a path changes), duplicate IDs, path templates with no matching parameter, and operations with no success response. YAML and JSON both accepted. Runs in your browser.

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