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OpenAPI Specification

openapi: 3.2.0
info:
  title: Neurall API (v3) MCP API
  version: 1.0.0
  description: 'The public v3 surface: /v3/generations for async generations that produce a content asset, /v3/voices for the voice catalog and your own cloned voices, plus file uploads, per-feature pricing, read-only templates, and signed webhooks. Authenticate every call with an API key in the Authorization header. This document is machine-readable at https://api.neurall.io/v3/openapi.json (import it into Postman, or generate a client).'
servers:
- url: https://api.neurall.io
tags:
- name: MCP
  description: The same /v3 surface exposed as MCP tools for AI agents (v3)
paths:
  /v3/mcp:
    post:
      summary: MCP endpoint
      description: 'The public /v3 generation features exposed as MCP (Model Context Protocol) tools, so an agent can browse templates, check pricing, upload inputs and generate on your behalf. Streamable HTTP transport, stateless: every call is a POST and there is no session to resume, so GET and DELETE return 405. Authenticate exactly as elsewhere, with the bare API key in the Authorization header and no `Bearer` prefix.


        Tool calls loop back through these same REST routes, so billing and concurrency limits are identical to calling the API directly. Generation tools submit and return the generation id; the agent polls `get_generation`, matching the async contract of POST /v3/generations. Each feature has its own typed tool (generate_ad, generate_youtube_thumbnail, generate_self_portrait, generate_product_shot, generate_avatar_video, generate_logo_reveal, generate_object_reveal, generate_voiceover); create_generation reaches the same features in packed form.'
      security:
      - ApiKeyAuth: []
      tags:
      - MCP
      requestBody:
        required: true
        content:
          application/json:
            schema:
              type: object
              description: A JSON-RPC 2.0 message, e.g. `tools/list` or `tools/call`.
      responses:
        '200':
          description: 'A JSON-RPC response. The transport answers as an SSE stream (`text/event-stream`), so send `Accept: application/json, text/event-stream`.

            '
        '401':
          description: Unauthorized
        '405':
          description: Method not allowed (the endpoint is stateless and POST only)
      operationId: postV3Mcp
      x-operation-id-source: derived
components:
  securitySchemes:
    ApiKeyAuth:
      type: apiKey
      in: header
      name: Authorization