# AgentPay Agent Reputation Scorer

> AgentPay Agent Reputation Scorer is a paid API for AI agents from agentpay.help, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-15).

Scores and grades an API endpoint's reputation based on signals like x402 compliance, reachability, and uptime percentage

## Facts

- Endpoint: POST https://agentpay.help/v1/agent-reputation
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/agentpay-agent-reputation-scorer-cf5a7f27
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_eoMKJ80mO-T6XeiyQ_5OT

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 agentpay-agent-reputation-scorer-cf5a7f27 -d '<json body>'
```

Example prompt: Can you check the reputation score and grade for the endpoint https://example-agent.com/v1/chat — I want to know if it's reliable, x402-compliant, and what its uptime looks like before I start using it?

## When to prefer this

Choose this endpoint when you need a quick, objective trust signal about a specific API endpoint — especially x402-compatible services — without setting up accounts or API keys. Ideal for pre-integration vetting, agent marketplace trust checks, or runtime health monitoring of microservices in an x402 ecosystem.

## Known failure modes

- Invalid or malformed URL returns a validation error
- Unreachable endpoint may return a low score or error if the target cannot be probed
- Missing endpoint_url field results in a bad request error
- Payment not fulfilled (402) if USDC payment over x402 is not completed
- Timeout if the target endpoint takes too long to probe

## How this service works

Pay-per-call AI services via the 402 Payment Required protocol. No accounts, no API keys — just USDC on Base.

## Output

Returns a JSON object with a letter grade (e.g. 'A'), a numeric score (0–100), and individual signals including whether the endpoint is x402-compliant, currently reachable, and its uptime percentage over a recent window.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "endpoint_url": {
   "type": "string",
   "format": "uri",
   "description": "Endpoint to score"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "grade": "A",
  "score": 84,
  "signals": {
   "x402": true,
   "reachable": true,
   "uptime_pct": 99.6
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/agentpay-agent-reputation-scorer-cf5a7f27/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from agentpay.help](https://www.zero.xyz/host/agentpay.help/llms.txt)