# 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, $0.01/call, status unknown (last checked 2026-09-13).

## Facts

- Endpoint: POST https://x402.agentutility.ai/dom-change-diff
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-13
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/dom-change-diff-e556cab6
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_o5tGM-64EJ9Lu-d6NM-nA

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 dom-change-diff-e556cab6 -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.

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "has_changes": true,
  "added_elements": 1,
  "removed_elements": 1,
  "selector_changes": [
   {
    "status": "removed",
    "selector": "#login-btn",
    "after_count": 0,
    "before_path": "html:nth-of-type(1)>body:nth-of-type(1)>div:nth-of-type(1)",
    "before_count": 1,
    "stable_selector_hint": "[data-testid=\"login\"]"
   }
  ],
  "after_element_count": 3,
  "before_element_count": 3
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/dom-change-diff-e556cab6/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)