# x402 Payee Reputation Scorer

> x402 Payee Reputation Scorer is a paid API for AI agents from x402-endpoint-risk-corpus.mtree.workers.dev, paid per call via x402, $0.15/call, status unknown (last checked 2026-09-15).

Assess a payTo wallet address, domain, or x402 endpoint for observed buyer/call history, price sanity, route coverage, and returns an allow/warn/block policy decision

## Facts

- Endpoint: POST https://x402-endpoint-risk-corpus.mtree.workers.dev/v1/x402/payee_reputation
- Price: $0.15/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/x402-payee-reputation-scorer-8cd9527e
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_c7WbiTGqySEog-REfAUIQ

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 x402-payee-reputation-scorer-8cd9527e -d '<json body>'
```

Example prompt: Before I let my agent auto-pay this endpoint, can you check the reputation of the payTo wallet 0xAbC123... on domain api.example.com — tell me if it has solid call history, whether the price looks sane, and whether I should allow, warn, or block payments to it?

## When to prefer this

Use this endpoint when an AI agent needs to vet an x402 payee before authorizing an autonomous or semi-autonomous payment — especially when the payee is newly encountered, high-value, or unknown. Prefer this over generic OFAC/fraud checks when the specific concern is x402 protocol safety: price drain, replay risk, and call history within the Bazaar-derived corpus.

## Known failure modes

- Unknown wallet or domain with no observed history returns minimal data or warn-by-default policy
- Malformed wallet address or URL causes 400 bad request
- Insufficient corpus data for new endpoints may yield low-confidence scores
- Payment not received or invalid x402 payment header returns 402 or 401
- Rate limiting or overload returns 429 or 503

## How this service works

Assess a payTo wallet, domain, or endpoint for observed buyer/call history, price sanity, route coverage, and allow/warn/block policy. Returns JSON. Price 0.15 USDC on Base via x402. Demo/preview: https://x402-endpoint-risk-corpus.mtree.workers.dev/demo/payee_reputation. Contact: https://x402-endpoint-risk-corpus.mtree.workers.dev/contact.

## Output

A JSON object containing a reputation assessment of the payee including: observed buyer/call history, price sanity verdict, route coverage analysis, and a policy decision of allow, warn, or block for the queried wallet address, domain, or endpoint.

## Example request

```json
{
 "input": {
  "body": {
   "pay_to": "0x742d35Cc6634C0532925a3b844Bc9e7595f42bE2"
  },
  "type": "http",
  "method": "POST",
  "bodyType": "json"
 }
}
```

## 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": {
     "type": "object",
     "anyOf": [
      {
       "required": [
        "pay_to"
       ]
      },
      {
       "required": [
        "domain"
       ]
      },
      {
       "required": [
        "url"
       ]
      }
     ],
     "properties": {
      "url": {
       "type": "string",
       "format": "uri"
      },
      "domain": {
       "type": "string"
      },
      "pay_to": {
       "type": "string"
      }
     }
    },
    "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"
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/x402-payee-reputation-scorer-8cd9527e/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from x402-endpoint-risk-corpus.mtree.workers.dev](https://www.zero.xyz/host/x402-endpoint-risk-corpus.mtree.workers.dev/llms.txt)