# agentutility — paid x402 endpoints for autonomous agents

> agentutility — paid x402 endpoints for autonomous agents is a paid API for AI agents from x402.agentutility.ai, paid per call via x402, $0.07/call, status unknown (last checked 2026-09-15).

## Facts

- Endpoint: POST https://x402.agentutility.ai/audio-brief
- Price: $0.07/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/audio-brief-aaafa66a
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_1LzJaA1p9Zy-TnpRIRznX

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability audio-brief-aaafa66a -d '<json body>'
```

## How this service works

Paid x402 endpoints organized into product clusters. USDC-settled on Base. MCP-callable. ERC-8004 identity registry agentId 47167.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method",
    "bodyType",
    "body"
   ],
   "properties": {
    "body": {
     "required": [
      "audio_url"
     ],
     "properties": {
      "audio_url": {
       "type": "string",
       "description": "Public http(s) URL of the audio file (mp3, wav, m4a, ogg, flac, webm). Max 2048 chars."
      }
     }
    },
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "POST"
     ],
     "type": "string"
    },
    "bodyType": {
     "enum": [
      "json",
      "form-data",
      "text"
     ],
     "type": "string"
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object",
     "properties": {
      "summary": {
       "type": "string"
      },
      "degraded": {
       "type": "boolean"
      },
      "audio_url": {
       "type": "string"
      },
      "sentiment": {
       "type": "object",
       "properties": {
        "overall_score": {
         "type": "number"
        },
        "overall_sentiment": {
         "type": "string"
        }
       }
      },
      "components": {
       "type": "array",
       "items": {
        "type": "object",
        "properties": {
         "ms": {
          "type": "integer"
         },
         "ok": {
          "type": "boolean"
         },
         "name": {
          "type": "string"
         }
        }
       }
      },
      "transcript": {
       "type": "string"
      },
      "composed_of": {
       "type": "array",
       "items": {
        "type": "string"
       }
      },
      "duration_seconds": {
       "type": "number"
      },
      "transcript_chars": {
       "type": "integer"
      },
      "language_detected": {
       "type": "string"
      }
     }
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "summary": "- A call to civic action.",
  "degraded": false,
  "audio_url": "https://download.samplelib.com/mp3/sample-3s.mp3",
  "sentiment": {
   "overall_score": 0.1,
   "overall_sentiment": "neutral"
  },
  "components": [
   {
    "ms": 3800,
    "ok": true,
    "name": "audio-transcribe"
   },
   {
    "ms": 1700,
    "ok": true,
    "name": "summarize-text"
   },
   {
    "ms": 1500,
    "ok": true,
    "name": "sentiment"
   }
  ],
  "transcript": "Now is the time for all good men to come to the aid of their country.",
  "composed_of": [
   "audio-transcribe",
   "summarize-text",
   "sentiment"
  ],
  "duration_seconds": 4.21,
  "transcript_chars": 70,
  "language_detected": "en"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/audio-brief-aaafa66a/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from x402.agentutility.ai](https://www.zero.xyz/host/x402.agentutility.ai/llms.txt)