GenMagic Text API

openapi: 3.2.0
info:
  title: GenMagic Text API
  version: 1.0.0
  description: 'GenMagic is one studio for every generative AI model. Turn a single prompt into text, images, video, audio, music, or code, and route it to the best model automatically. New models the day they launch.


    OpenAI-compatible REST API plus a remote Model Context Protocol server at /api/mcp (Streamable HTTP, protocol 2025-06-18). Authenticate with an API key minted at https://genmagic.co/get-api-key; the model catalog (GET /api/v1/models) also answers without one. Billed pay-as-you-go against a prepaid USD balance; cost and remaining balance are returned in response headers.'
servers:
- url: https://genmagic.co
security:
- bearerAuth: []
tags:
- name: Text
paths:
  /api/v1/text:
    post:
      operationId: createText
      summary: Typed, brand-steered text artifact
      description: 'GenMagic-native. Returns a finished artifact rather than raw model output: pass type to unlock the artifact''s system prompt and, for svg/website, the brand''s exact palette and typeface. Omit type for plain, voice-branded text.'
      security:
      - bearerAuth: []
      responses:
        '200':
          description: Success.
          headers:
            X-RateLimit-Limit:
              schema:
                type: string
              description: The key's request quota for the current rate-limit window.
            X-RateLimit-Remaining:
              schema:
                type: string
              description: Requests left for this key in the current rate-limit window.
            X-RateLimit-Reset:
              schema:
                type: string
              description: Seconds until the current rate-limit window resets.
            X-Cost-Cents:
              schema:
                type: string
              description: What this call cost, in US cents (may be fractional). Provider-authoritative when the provider reports a cost, else the metered estimate. Omitted when the cost is unknown or deliberately not disclosed (the OpenAI-compatible chat passthrough hides it).
            X-Credits-Remaining:
              schema:
                type: string
              description: The key owner's prepaid balance in US cents remaining after this call. Omitted when the balance cannot be read.
            X-Brand-Fit:
              schema:
                type: string
                enum:
                - on_brand
                - wrong_palette
                - monochrome
              description: The generated visual artifact's brand-color verdict. Present only when the output could be measured and the brand has a chromatic palette; an agent can regenerate a `wrong_palette` result to close the on-brand loop. Omitted for prose, code, and unbranded generations.
        '401':
          description: 'authentication_error: missing or invalid API key.'
        '402':
          description: 'insufficient_quota: credit balance would go negative.'
        '429':
          description: 'rate_limit_error: over 300 requests/minute for this key.'
      requestBody:
        required: true
        content:
          application/json:
            schema:
              type: object
              required:
              - prompt
              properties:
                prompt:
                  type: string
                  description: What to write or produce.
                type:
                  type: string
                  enum:
                  - writing
                  - code
                  - svg
                  - website
                  description: The kind of artifact. Omit for plain text.
                model:
                  type: string
                  description: Model id. Omit for the type's default.
                system:
                  type: string
                  description: Extra steer applied after the brand system message.
                attachments:
                  type: array
                  items:
                    type: object
                  description: 'Files for the model to read: [{ name, mime, dataUrl }] (PDF, office, csv, text, image, audio).'
      tags:
      - Text
components:
  securitySchemes:
    bearerAuth:
      type: http
      scheme: bearer
      description: 'GenMagic API key in the form gm_live_..., sent as Authorization: Bearer <key>. Also accepted as x-api-key.'