# Halowerk x402 Radar – Trust Verification for x402 Endpoints

> Halowerk x402 Radar – Trust Verification for x402 Endpoints is a paid API for AI agents from tools.halowerk.com, paid per call via x402, $0.008/call, status unknown (last checked 2026-09-15).

Verifies the trustworthiness of unknown x402 payment endpoints before an agent calls or pays them

## Facts

- Endpoint: POST https://tools.halowerk.com/v1/x402/radar
- Price: $0.008/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/halowerk-x402-radar-trust-verification-for-x402-endpoints-e675b4f9
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_fbnsrUTzAepraaKwuQIty

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 halowerk-x402-radar-trust-verification-for-x402-endpoints-e675b4f9 -d '<json body>'
```

Example prompt: Before my agent pays this x402 endpoint at https://someservice.example.com/v1/data, run it through the Halowerk x402 Radar to check whether it looks trustworthy and flag any red flags.

## When to prefer this

Use this endpoint whenever an AI agent is about to call an unfamiliar or untrusted x402 service, especially before making any payment. This is the right choice when building safety gates in agentic workflows that dynamically discover and pay x402 APIs, or when evaluating third-party x402 providers for the first time. Prefer this over manual inspection when operating at scale or in automated pipelines where human review is not feasible.

## Known failure modes

- Endpoint URL is unreachable or returns no metadata — partial or failed analysis
- Unknown or newly registered x402 endpoint with insufficient signals — low-confidence verdict
- Malformed URL input — validation error returned
- Endpoint actively mimics legitimate providers — potential false positive on trust score
- Rate limit exceeded — error response if too many checks in short succession

## How this service works

Vertrauensprüfung fremder x402-Endpunkte

## Output

Returns a trust assessment of the given x402 endpoint, including a trust score, identified risk signals or red flags, legitimacy indicators, and an overall recommendation on whether the endpoint is safe to call and pay.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "depth": {
   "enum": [
    "quick",
    "full"
   ],
   "type": "string",
   "default": "quick",
   "description": "quick lässt Verlauf und Facilitator-Prüfung weg, 4 s je Endpunkt. full prüft beides, 12 s je Endpunkt. Der Preis bleibt gleich."
  },
  "limit": {
   "type": "integer",
   "default": 20,
   "maximum": 20,
   "description": "Nur zusammen mit discover: wie viele Endpunkte gezogen werden"
  },
  "discover": {
   "type": "boolean",
   "description": "Statt eigener Liste: Endpunkte aus dem Coinbase-Bazaar ziehen"
  },
  "endpoints": {
   "type": "array",
   "items": {
    "type": "string"
   },
   "maxItems": 20,
   "description": "Zu prüfende Endpunkt-URLs, höchstens 20 je Aufruf"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/halowerk-x402-radar-trust-verification-for-x402-endpoints-e675b4f9/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from tools.halowerk.com](https://www.zero.xyz/host/tools.halowerk.com/llms.txt)