# 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, $0.02/call, status unknown (last checked 2026-09-14).

## Facts

- Endpoint: POST https://x402.agentutility.ai/form-fill-plan
- Price: $0.02/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/form-fill-plan-6a8a30a2
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_Obkdi_2AliETQ4lrf9loV

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 form-fill-plan-6a8a30a2 -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": [
      "form_html",
      "goal"
     ],
     "properties": {
      "data": {
       "type": "object",
       "description": "Optional known field values keyed by a human-readable name (e.g. { email: 'a@b.com' }) the planner should use to resolve steps."
      },
      "goal": {
       "type": "string",
       "description": "Plain-language description of what the fill should accomplish, e.g. 'sign up for the newsletter with my email'. Required, max 500 chars."
      },
      "form_html": {
       "type": "string",
       "description": "The HTML of the form to plan a fill for, including its input/select/textarea elements. Required, max 200,000 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": {
      "goal": {
       "type": "string"
      },
      "model": {
       "type": "string"
      },
      "steps": {
       "type": "array",
       "items": {
        "type": "object",
        "properties": {
         "note": {
          "type": "string"
         },
         "action": {
          "type": "string"
         },
         "resolved": {
          "type": "boolean"
         },
         "selector": {
          "type": "string"
         },
         "field_label": {
          "type": "string"
         },
         "value_or_placeholder": {
          "type": "string"
         }
        }
       }
      },
      "source": {
       "type": "string"
      },
      "advisory": {
       "type": "boolean"
      },
      "advisory_note": {
       "type": "string"
      },
      "unresolved_fields": {
       "type": "array",
       "items": {
        "type": "string"
       }
      }
     }
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "goal": "sign up for the newsletter with my email",
  "model": "hermes-3-llama-3.1-405b",
  "steps": [
   {
    "action": "fill",
    "resolved": true,
    "selector": "#email",
    "field_label": "Email",
    "value_or_placeholder": "test@example.com"
   },
   {
    "note": "Goal did not specify a newsletter preference.",
    "action": "check",
    "resolved": false,
    "selector": "#newsletter",
    "field_label": "Subscribe to newsletter",
    "value_or_placeholder": "<unknown preference>"
   }
  ],
  "source": "morpheus",
  "advisory": true,
  "advisory_note": "This plan is heuristic guidance generated from static HTML, not a guarantee — it has not been executed against a real browser. Verify selectors and unresolved fields before running it.",
  "unresolved_fields": [
   "Subscribe to newsletter"
  ]
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/form-fill-plan-6a8a30a2/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)