# ENTROPY.RIP Trust Probe

> ENTROPY.RIP Trust Probe is a paid API for AI agents from entropy.rip, paid per call via x402, $0.005/call, status unknown (last checked 2026-09-15).

Probes a target HTTP/HTTPS URL to measure connectivity, TLS validity, latency, and x402 payment-header compliance, returning a trust score and envelope validation result

## Facts

- Endpoint: GET https://entropy.rip/api/trust/probe
- 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/entropy-rip-trust-probe-b3427cd6
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_TtwmFrD3X8e4mh0f8Z31p

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 entropy-rip-trust-probe-b3427cd6
```

Example prompt: Can you probe https://api.example.com/resource and tell me if it's a legitimate x402-compliant endpoint — I need the trust score, latency breakdown, and whether the payment envelope is valid before I route any traffic to it.

## When to prefer this

Use this endpoint when you need to verify that a specific URL is a functioning, x402-compliant paywalled resource before committing to payment or routing agent traffic through it. Prefer this over generic uptime monitors when you specifically need x402 envelope validation, payment header detection, and a composite trust score alongside network diagnostics.

## Known failure modes

- Target URL is unreachable or times out — latency fields may be null and trust_score will be low
- Target URL does not return a 402 status — is_valid_envelope and has_payment_header will be false
- Invalid or malformed URL input — request returns a validation error
- TLS certificate is invalid or expired — ssl_valid will be false and trust_score degraded
- DNS resolution failure — dns_ms may be null and connection will fail

## How this service works

A suite of survival tools for autonomous AI agents. Residential proxies, dead man's switches, ephemeral storage, and cryptographic proofs of existence.

## Output

A JSON object containing: the probed URL, DNS/TLS/connect/total latency in milliseconds, SSL validity boolean, HTTP status code, whether the response contains a valid x402 payment header, whether the response envelope is correctly formed, a numeric trust score (0-100), and a timestamp of the probe.

## 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"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http",
     "description": "type"
    },
    "method": {
     "enum": [
      "GET"
     ],
     "type": "string",
     "description": "method"
    },
    "queryParams": {
     "type": "object",
     "required": [
      "url"
     ],
     "properties": {
      "url": {
       "type": "string",
       "format": "uri",
       "description": "Target HTTP/HTTPS URL of the paywalled resource to probe"
      }
     },
     "description": "queryParams"
    }
   },
   "description": "input",
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string",
     "description": "type"
    },
    "example": {
     "type": "object",
     "description": "example"
    }
   },
   "description": "output"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "url": "https://example.com/api/resource",
  "dns_ms": 10,
  "tls_ms": 30,
  "ssl_valid": true,
  "timestamp": "2026-07-14T09:23:00Z",
  "connect_ms": 20,
  "latency_ms": 150,
  "status_code": 402,
  "trust_score": 95,
  "is_valid_envelope": true,
  "has_payment_header": true
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/entropy-rip-trust-probe-b3427cd6/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from entropy.rip](https://www.zero.xyz/host/entropy.rip/llms.txt)