# 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, $0.005/call, status unknown (last checked 2026-09-15).

## Facts

- Endpoint: POST https://x402.agentutility.ai/encounter-builder
- Price: $0.005/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/encounter-builder-0aafdc7d
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_mUtyE9RgssIWfvOBZwT6j

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 encounter-builder-0aafdc7d -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": {
  "encounter": {
   "raw_xp": 850,
   "difficulty": "deadly",
   "multiplier": 2,
   "adjusted_xp": 1700
  },
  "party_size": 4,
  "xp_thresholds": {
   "easy": 300,
   "hard": 900,
   "deadly": 1600,
   "medium": 600
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/encounter-builder-0aafdc7d/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)