Google Gemini API — Document Understanding

naftiko: 1.0.0-alpha2
info:
  label: Google Gemini API — Document Understanding
  description: 'Google Gemini API — Document Understanding. 2 operations. Lead operation: Google Upload File (Resumable).
    Self-contained Naftiko capability covering one Google business surface.'
  tags:
  - Google
  - Document Understanding
  created: '2026-05-19'
  modified: '2026-05-19'
binds:
- namespace: env
  keys:
    GOOGLE_API_KEY: GOOGLE_API_KEY
capability:
  consumes:
  - type: http
    namespace: gemini-document-understanding
    baseUri: https://generativelanguage.googleapis.com/v1beta
    description: Google Gemini API — Document Understanding business capability. Self-contained, no shared references.
    resources:
    - name: files
      path: /files
      operations:
      - name: uploadfile
        method: POST
        description: Google Upload File (Resumable)
        outputRawFormat: json
        outputParameters:
        - name: result
          type: object
          value: $.
        inputParameters:
        - name: X-Goog-Upload-Protocol
          in: header
          type: string
          description: Upload protocol type
          required: true
        - name: X-Goog-Upload-Command
          in: header
          type: string
          description: Upload command (start for initiation, "upload, finalize" for data upload)
          required: true
        - name: X-Goog-Upload-Header-Content-Length
          in: header
          type: integer
          description: Total size of the file in bytes (required for start command)
        - name: X-Goog-Upload-Header-Content-Type
          in: header
          type: string
          description: MIME type of the file (required for start command)
        - name: X-Goog-Upload-Offset
          in: header
          type: integer
          description: Byte offset for upload (required for upload command)
        - name: Content-Length
          in: header
          type: integer
          description: Size of the current chunk being uploaded
        - name: body
          in: body
          type: object
          description: Request body (JSON).
          required: false
    - name: models-model}:generateContent
      path: /models/{model}:generateContent
      operations:
      - name: generatecontent
        method: POST
        description: Google Generate Content
        outputRawFormat: json
        outputParameters:
        - name: result
          type: object
          value: $.
        inputParameters:
        - name: model
          in: path
          type: string
          description: The model to use for generation
          required: true
        - name: body
          in: body
          type: object
          description: Request body (JSON).
          required: true
    authentication:
      type: apikey
      key: x-goog-api-key
      value: '{{env.GOOGLE_API_KEY}}'
      placement: header
  exposes:
  - type: rest
    namespace: gemini-document-understanding-rest
    port: 8080
    description: REST adapter for Google Gemini API — Document Understanding. One Spectral-compliant resource per consumed
      operation, prefixed with /v1.
    resources:
    - path: /v1/files
      name: files
      description: REST surface for files.
      operations:
      - method: POST
        name: uploadfile
        description: Google Upload File (Resumable)
        call: gemini-document-understanding.uploadfile
        with:
          X-Goog-Upload-Protocol: rest.X-Goog-Upload-Protocol
          X-Goog-Upload-Command: rest.X-Goog-Upload-Command
          X-Goog-Upload-Header-Content-Length: rest.X-Goog-Upload-Header-Content-Length
          X-Goog-Upload-Header-Content-Type: rest.X-Goog-Upload-Header-Content-Type
          X-Goog-Upload-Offset: rest.X-Goog-Upload-Offset
          Content-Length: rest.Content-Length
          body: rest.body
        outputParameters:
        - type: object
          mapping: $.
    - path: /v1/models/model-generatecontent
      name: models-model-generatecontent
      description: REST surface for models-model}:generateContent.
      operations:
      - method: POST
        name: generatecontent
        description: Google Generate Content
        call: gemini-document-understanding.generatecontent
        with:
          model: rest.model
          body: rest.body
        outputParameters:
        - type: object
          mapping: $.
  - type: mcp
    namespace: gemini-document-understanding-mcp
    port: 9090
    transport: http
    description: MCP adapter for Google Gemini API — Document Understanding. One tool per consumed operation, routed inline
      through this capability's consumes block.
    tools:
    - name: google-upload-file-resumable
      description: Google Upload File (Resumable)
      hints:
        readOnly: false
        destructive: false
        idempotent: false
      call: gemini-document-understanding.uploadfile
      with:
        X-Goog-Upload-Protocol: tools.X-Goog-Upload-Protocol
        X-Goog-Upload-Command: tools.X-Goog-Upload-Command
        X-Goog-Upload-Header-Content-Length: tools.X-Goog-Upload-Header-Content-Length
        X-Goog-Upload-Header-Content-Type: tools.X-Goog-Upload-Header-Content-Type
        X-Goog-Upload-Offset: tools.X-Goog-Upload-Offset
        Content-Length: tools.Content-Length
        body: tools.body
      outputParameters:
      - type: object
        mapping: $.
    - name: google-generate-content
      description: Google Generate Content
      hints:
        readOnly: false
        destructive: false
        idempotent: false
      call: gemini-document-understanding.generatecontent
      with:
        model: tools.model
        body: tools.body
      outputParameters:
      - type: object
        mapping: $.