Whisper — canonical payload contracts

Speech-to-text (Whisper large-v3 CPU, default hu). Async: staging upload → whisper_job_start → whisper_job_status → whisper_job_result. Large file: POST /staging/upload (Bearer, multipart file) → pass response.url to whisper_job_start.

Service id: whisper
Docs: https://mcp.glc-rag.hu/guide/whisper
Markdown docs: https://mcp.glc-rag.hu/guide/whisper.md
MCP resource: docs://whisper/payload

POST https://mcp.glc-rag.hu/mcp. Values below are type slots from the live input schema (e.g. <string, required>), not example data. Fill them from the user task.

RPC result wrapper: result.structuredContent is the object in Output schema. result.isError mirrors structuredContent.is_error.

whisper_job_start

Start async speech-to-text. Returns {job_id} — not the transcript. Large local file: POST /staging/upload first, then pass response.url here. Then whisper_job_status → whisper_job_result. Default language hu.

Required arguments: (none)

Request contract

{
  "jsonrpc": "2.0",
  "id": "<integer|string>",
  "method": "tools/call",
  "params": {
    "name": "whisper_job_start",
    "arguments": {
      "url": "<string, optional>",
      "content_base64": "<string, optional>",
      "filename": "<string, optional>",
      "language": "<string, optional, default 'hu'>",
      "task": "<string, optional, enum transcribe|translate, default 'transcribe'>"
    }
  }
}

Input schema

{
  "type": "object",
  "properties": {
    "url": {
      "type": "string",
      "description": "Public https URL. Large/local files: POST /staging/upload → use returned url (https://mcp.glc-rag.hu/staging/…)."
    },
    "content_base64": {
      "type": "string",
      "description": "Tiny clips only. Large audio → /staging/upload."
    },
    "filename": {
      "type": "string",
      "description": "Optional filename hint (e.g. talk.mp3)."
    },
    "language": {
      "type": "string",
      "description": "Default hu. Use hu for Hungarian; auto to detect.",
      "default": "hu"
    },
    "task": {
      "type": "string",
      "enum": [
        "transcribe",
        "translate"
      ],
      "description": "transcribe (default) or translate (to English).",
      "default": "transcribe"
    }
  },
  "additionalProperties": false
}

Output schema (structuredContent on success)

{
  "type": "object",
  "properties": {
    "job_id": {
      "type": "string",
      "description": "Hex job id from whisper_job_start"
    },
    "status": {
      "type": "string"
    }
  },
  "additionalProperties": true,
  "required": [
    "job_id"
  ]
}

Error object

{
  "type": "object",
  "required": [
    "error",
    "is_error"
  ],
  "properties": {
    "error": {
      "type": "string"
    },
    "is_error": {
      "type": "boolean",
      "const": true
    }
  },
  "additionalProperties": true
}

whisper_job_status

Poll whisper job. status: queued|running|completed|failed. Backoff 15–60s.

Required arguments: job_id

Request contract

{
  "jsonrpc": "2.0",
  "id": "<integer|string>",
  "method": "tools/call",
  "params": {
    "name": "whisper_job_status",
    "arguments": {
      "job_id": "<string, required>"
    }
  }
}

Input schema

{
  "type": "object",
  "properties": {
    "job_id": {
      "type": "string",
      "description": "From whisper_job_start"
    }
  },
  "required": [
    "job_id"
  ],
  "additionalProperties": false
}

Output schema (structuredContent on success)

{
  "type": "object",
  "properties": {
    "job_id": {
      "type": "string",
      "description": "Hex job id from whisper_job_start"
    },
    "status": {
      "type": "string"
    },
    "error": {
      "type": "string"
    }
  },
  "additionalProperties": true,
  "required": [
    "job_id",
    "status"
  ]
}

Error object

{
  "type": "object",
  "required": [
    "error",
    "is_error"
  ],
  "properties": {
    "error": {
      "type": "string"
    },
    "is_error": {
      "type": "boolean",
      "const": true
    }
  },
  "additionalProperties": true
}

whisper_job_result

Transcript when status=completed. If still queued/running, keep polling status.

Required arguments: job_id

Request contract

{
  "jsonrpc": "2.0",
  "id": "<integer|string>",
  "method": "tools/call",
  "params": {
    "name": "whisper_job_result",
    "arguments": {
      "job_id": "<string, required>"
    }
  }
}

Input schema

{
  "type": "object",
  "properties": {
    "job_id": {
      "type": "string",
      "description": "From whisper_job_start"
    }
  },
  "required": [
    "job_id"
  ],
  "additionalProperties": false
}

Output schema (structuredContent on success)

{
  "type": "object",
  "properties": {
    "job_id": {
      "type": "string",
      "description": "Hex job id from whisper_job_start"
    },
    "status": {
      "type": "string"
    },
    "text": {
      "type": "string"
    },
    "language": {
      "type": "string"
    }
  },
  "additionalProperties": true,
  "required": [
    "job_id",
    "status"
  ]
}

Error object

{
  "type": "object",
  "required": [
    "error",
    "is_error"
  ],
  "properties": {
    "error": {
      "type": "string"
    },
    "is_error": {
      "type": "boolean",
      "const": true
    }
  },
  "additionalProperties": true
}