BlockRun.AI

Payment pricing

x402 payment terms are the authoritative price for calling this endpoint.

Payment option 1

541000 atomic units
Atomic price: 541000 · Network: eip155:5042 · Asset: 0x3600000000000000000000000000000000000000 · Scheme: exact

[
  {
    "scheme": "exact",
    "network": "eip155:5042",
    "asset": "0x3600000000000000000000000000000000000000",
    "amount": "541000",
    "payTo": "0x634D274e67DafaF76C54153aa113906a606e1E0B"
  }
]

Observed health

Status

Healthy

Latest latency

87 ms

Average latency

80 ms

HTTP status

204

Last checked

2026-11-04T15:37:26.692Z

Reachability

100% over 12 checks

Latency is measured to the first response headers. A reachable result does not verify response accuracy or merchant identity.

Input schema

{
  "body": {
    "type": "object",
    "required": [
      "to",
      "task",
      "from"
    ],
    "properties": {
      "to": {
        "type": "string",
        "description": "Destination phone number in E.164 format, e.g. +14155552671."
      },
      "from": {
        "type": "string",
        "description": "Wallet-owned phone number used as caller ID (E.164). Required — purchase one via /api/v1/phone/numbers/buy first."
      },
      "task": {
        "type": "string",
        "maxLength": 4000,
        "minLength": 10,
        "description": "Natural-language description of what the AI agent should do on the call."
      },
      "model": {
        "enum": [
          "base",
          "enhanced",
          "turbo"
        ],
        "type": "string",
        "description": "Bland conversation model tier."
      },
      "voice": {
        "type": "string",
        "description": "Voice preset: nat, josh, maya, june, paige, derek, florian — or a Bland.ai voice ID."
      },
      "language": {
        "type": "string",
        "default": "en-US",
        "description": "Language code for STT/TTS."
      },
      "max_duration": {
        "type": "integer",
        "default": 5,
        "maximum": 30,
        "minimum": 1,
        "description": "Maximum call length in minutes."
      },
      "first_sentence": {
        "type": "string",
        "maxLength": 500,
        "description": "Optional fixed opening line spoken before the AI takes over."
      },
      "wait_for_greeting": {
        "type": "boolean",
        "description": "If true, AI waits for the recipient to speak first."
      },
      "interruption_threshold": {
        "type": "integer",
        "maximum": 500,
        "minimum": 50,
        "description": "How aggressive the AI is about interrupting (ms)."
      }
    },
    "additionalProperties": false
  },
  "type": "http",
  "method": "POST",
  "bodyType": "json"
}

Output schema

{
  "type": "object",
  "properties": {
    "example": {
      "type": "object",
      "properties": {
        "status": {
          "type": "string"
        },
        "call_id": {
          "type": "string"
        }
      }
    }
  }
}