openapi: "3.1.0"
info:
  title: "LLM & AI API"
  version: "1.0.0"
  description: "OpenAI-style and Anthropic-style mock endpoints for AI integrations Exported as an OpenAPI 3.1 document from Fake API for Devs."
servers:
  - url: "https://fakeapifordevs.vercel.app"
        description: "Fake API for Devs production endpoint"
tags:
  - name: "LLM & AI"
        description: "OpenAI-style and Anthropic-style mock endpoints for AI integrations"
paths:
  /api/llm/openai/v1/chat/completions:
    post:
      tags:
        - "LLM & AI"
      summary: "POST /api/llm/openai/v1/chat/completions"
      operationId: "llm_post_llm_openai_v1_chat_completions"
      parameters:
        []
      requestBody:
        required: true
        content:
          application/json:
            schema:
              type: "object"
            example:
              model: "gpt-4o"
              messages:
                - role: "system"
                                    content: "You are a helpful assistant."
                - role: "user"
                                    content: "Summarize the value of Fake API for Devs in one paragraph."
              temperature: 0.7
              stream: false
      responses:
        200:
          description: "Successful response"
          content:
            application/json:
              schema:
                type: "object"
        400:
          description: "Bad request"
        401:
          description: "Unauthorized"
        404:
          description: "Not found"
        429:
          description: "Rate limited"
        500:
          description: "Internal server error"
  /api/llm/openai/v1/embeddings:
    post:
      tags:
        - "LLM & AI"
      summary: "POST /api/llm/openai/v1/embeddings"
      operationId: "llm_post_llm_openai_v1_embeddings"
      parameters:
        []
      requestBody:
        required: true
        content:
          application/json:
            schema:
              type: "object"
            example:
              model: "text-embedding-3-small"
              input:
                - "Mock API playground"
                - "Developer testing workflows"
      responses:
        200:
          description: "Successful response"
          content:
            application/json:
              schema:
                type: "object"
        400:
          description: "Bad request"
        401:
          description: "Unauthorized"
        404:
          description: "Not found"
        429:
          description: "Rate limited"
        500:
          description: "Internal server error"
  /api/llm/openai/v1/models:
    get:
      tags:
        - "LLM & AI"
      summary: "GET /api/llm/openai/v1/models"
      operationId: "llm_get_llm_openai_v1_models"
      parameters:
        - name: "page"
                    in: "query"
                    schema:
                      type: "integer"
                      minimum: 1
                      default: 1
                    description: "1-indexed page number for collection endpoints."
        - name: "per_page"
                    in: "query"
                    schema:
                      type: "integer"
                      minimum: 1
                      maximum: 50
                      default: 10
                    description: "Page size for collection endpoints."
        - name: "q"
                    in: "query"
                    schema:
                      type: "string"
                    description: "Optional text search filter where supported."
        - name: "delay"
                    in: "query"
                    schema:
                      type: "number"
                      minimum: 0
                      maximum: 10
                    description: "Optional artificial delay in seconds."
        - name: "simulate_error"
                    in: "query"
                    schema:
                      type: "string"
                      enum:
                        - "rate_limit"
                        - "server_error"
                        - "not_found"
                        - "unauthorized"
                        - "forbidden"
                        - "bad_request"
                        - "service_unavailable"
                        - "timeout"
                        - "malformed"
                    description: "Force a mock failure scenario for resilience testing."
      responses:
        200:
          description: "Successful response"
          content:
            application/json:
              schema:
                type: "object"
        400:
          description: "Bad request"
        401:
          description: "Unauthorized"
        404:
          description: "Not found"
        429:
          description: "Rate limited"
        500:
          description: "Internal server error"
  /api/llm/anthropic/v1/messages:
    post:
      tags:
        - "LLM & AI"
      summary: "POST /api/llm/anthropic/v1/messages"
      operationId: "llm_post_llm_anthropic_v1_messages"
      parameters:
        []
      requestBody:
        required: true
        content:
          application/json:
            schema:
              type: "object"
            example:
              model: "claude-3-5-sonnet-20241022"
              max_tokens: 256
              messages:
                - role: "user"
                                    content: "Draft a short release note for a new mock API domain."
      responses:
        200:
          description: "Successful response"
          content:
            application/json:
              schema:
                type: "object"
        400:
          description: "Bad request"
        401:
          description: "Unauthorized"
        404:
          description: "Not found"
        429:
          description: "Rate limited"
        500:
          description: "Internal server error"