# 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, $0.03/call, status unknown (last checked 2026-09-15).

## Facts

- Endpoint: POST https://x402.agentutility.ai/regex-pack
- Price: $0.03/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/regex-pack-3df76922
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_YKsgkumkESzPBbhOe8zPu

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 regex-pack-3df76922 -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": [
      "prompt"
     ],
     "properties": {
      "prompt": {
       "type": "string",
       "description": "Natural-language description of what to match. Max 2,000 chars."
      },
      "test_strings": {
       "type": "array",
       "description": "Optional 1-100 test strings (max 5,000 chars each) to run the generated pattern against."
      }
     }
    },
    "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": {
      "regex": {
       "type": "object",
       "properties": {
        "flags": {
         "type": "string"
        },
        "pattern": {
         "type": "string"
        }
       }
      },
      "prompt": {
       "type": "string"
      },
      "degraded": {
       "type": "boolean"
      },
      "components": {
       "type": "array",
       "items": {
        "type": "object",
        "properties": {
         "ms": {
          "type": "integer"
         },
         "ok": {
          "type": "boolean"
         },
         "name": {
          "type": "string"
         }
        }
       }
      },
      "composed_of": {
       "type": "array",
       "items": {
        "type": "string"
       }
      },
      "test_results": {
       "type": "object",
       "properties": {
        "results": {
         "type": "array",
         "items": {
          "type": "object",
          "properties": {
           "input": {
            "type": "string"
           },
           "matched": {
            "type": "boolean"
           }
          }
         }
        },
        "matched_count": {
         "type": "integer"
        }
       }
      }
     }
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "regex": {
   "flags": "g",
   "pattern": "(\\+?1\\s?)?\\(?\\d{3}\\)?[\\s-]?\\d{3}[\\s-]?\\d{4}"
  },
  "prompt": "match a US phone number with optional country code",
  "degraded": false,
  "components": [
   {
    "ms": 1900,
    "ok": true,
    "name": "regex-from-prompt"
   },
   {
    "ms": 3,
    "ok": true,
    "name": "regex-test"
   }
  ],
  "composed_of": [
   "regex-from-prompt",
   "regex-test"
  ],
  "test_results": {
   "results": [
    {
     "input": "call 555-123-4567",
     "matched": true
    }
   ],
   "matched_count": 1
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/regex-pack-3df76922/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)