GenMagic Images API

openapi: 3.2.0
info:
  title: GenMagic Images 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: Images
paths:
  /api/v1/images/generations:
    post:
      operationId: createImage
      summary: OpenAI-compatible image generation and edit
      description: 'Generate an image from a prompt, or transform a reference image (image-to-image) by passing image. Set type=logo to steer as a brand mark. On-brand automatically when personalization is on. Returns { created, model, data: [{ url }] } (or b64_json), where model is the model that made the image, also when you left model out.'
      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: Description of the image (or the edit to make when image is given).
                model:
                  type: string
                  description: Model id. Omit for the recommended default.
                size:
                  type: string
                  enum:
                  - 1024x1024
                  - 1792x1024
                  - 1024x1792
                  description: Output size.
                image:
                  type: string
                  description: 'Reference image to transform: an https URL or a data:image URL.'
                type:
                  type: string
                  enum:
                  - image
                  - logo
                  description: logo steers a brand mark; image is a picture.
                response_format:
                  type: string
                  enum:
                  - url
                  - b64_json
                  description: Return a hosted url (default) or base64.
                n:
                  type: integer
                  description: Number of images (1-4).
      tags:
      - Images
  /api/v1/images/edits:
    post:
      operationId: editImage
      summary: OpenAI-compatible image edit (upload a picture)
      description: 'OpenAI''s image edit call, so client.images.edit in the OpenAI SDKs and apps built on them work unchanged: upload the picture as the image file and describe the change in prompt. The same engine, price and response as /images/generations with a reference image. A JSON body with image as an https or data:image URL also works. Masks are refused (describe the change in the prompt instead).'
      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.
        '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:
          multipart/form-data:
            schema:
              type: object
              required:
              - image
              - prompt
              properties:
                image:
                  type: string
                  format: binary
                  description: The picture to edit, as an uploaded file (the first one is used when several are sent).
                prompt:
                  type: string
                  description: The edit to make.
                model:
                  type: string
                  description: Model id. Omit for the recommended default.
                size:
                  type: string
                  enum:
                  - 1024x1024
                  - 1792x1024
                  - 1024x1792
                  description: Output size.
                response_format:
                  type: string
                  enum:
                  - url
                  - b64_json
                  description: Return a hosted url (default) or base64.
                n:
                  type: integer
                  description: Number of images (1-4).
      tags:
      - Images
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.'