Tool detail

BlockRun.AI

Generates an AI music track from a text prompt, with optional lyrics, duration and model choice.

Categories: Speech audio, Image generation

Use when

generate a short AI music track from a prompt
create instrumental background music for a video
generate a track with custom lyrics

Not for

not real-time or streaming audio - returns one generated track per call
price varies with duration/model - this snapshot is one price point

Inputs

POST JSON body: prompt (string, required); duration_seconds (integer 5-240, optional, default 30); instrumental (boolean, optional); lyrics, model (strings, optional)

Admitted input schema

{
  "type": "object",
  "properties": {
    "duration_seconds": {
      "type": "integer",
      "minimum": -9007199254740991,
      "maximum": 9007199254740991,
      "description": "Target duration in seconds (5-240, default 30)"
    },
    "instrumental": {
      "type": "boolean",
      "description": "Generate instrumental (no vocals)"
    },
    "lyrics": {
      "type": "string",
      "minLength": 0,
      "maxLength": 4096,
      "description": "Optional lyrics for the track"
    },
    "model": {
      "type": "string",
      "minLength": 0,
      "maxLength": 4096,
      "description": "Audio model ID (e.g., minimax/music-2.5+)"
    },
    "prompt": {
      "type": "string",
      "minLength": 0,
      "maxLength": 4096,
      "description": "Music style or description prompt"
    }
  },
  "required": [
    "prompt"
  ],
  "additionalProperties": false
}

Endpoint

Method: POST
URL: https://blockrun.ai/api/v1/audio/generations

Payment

Protocol: x402
Listed price: 0.106 USDC per call on Base (varies by duration/model)
Payment method: exact
Network: eip155:8453
Asset: 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913

Listed terms are catalog metadata. The caller supplies inputs and calls the tool outside Onelayer. If payment is required, the caller uses a compatible wallet to pay.

Source

Directory: Coinbase x402 Bazaar
Record: POST https://blockrun.ai/api/v1/audio/generations
Retrieved: 2026-09-30T20:37:07.382Z
Catalog file SHA-256: 6837ccddf886f0007cf3727ea9d27faaa5047b51b4f425345c554ce1c271a524
Catalog built: 2026-09-30T22:31:58.034Z