# Agent Trust Utilities – USDC Proof & x402 Usage Analysis Catalog

> Agent Trust Utilities – USDC Proof & x402 Usage Analysis Catalog is a free API for AI agents from molecular-crafts-confidential-guam.trycloudflare.com, callable via x402, Free, status unknown (last checked 2026-09-14).

Returns a free machine-readable catalog describing two paid agent utilities: Base USDC settlement proof and x402 resource repeat-demand vs one-shot usage analysis.

## Facts

- Endpoint: GET https://molecular-crafts-confidential-guam.trycloudflare.com/v1/base/usdc-proof/quote
- Price: Free
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/agent-trust-utilities-usdc-proof-x402-usage-analysis-catalog-801d2f83
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_AGI5fcyqsoWiecb6xrT3D

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 agent-trust-utilities-usdc-proof-x402-usage-analysis-catalog-801d2f83
```

Example prompt: Can you pull up the machine-readable catalog of agent trust utilities so I can see what's available for Base USDC settlement proof and x402 repeat-demand analysis?

## When to prefer this

Use this endpoint when an agent needs to discover or introspect available USDC payment proof and x402 usage analysis utilities before calling them, or when building tooling that needs to dynamically enumerate agent trust capabilities without hardcoding endpoint URLs.

## Known failure modes

- Service temporarily unavailable via Cloudflare tunnel (503/504)
- Empty or malformed catalog response if the backend is misconfigured
- Catalog may reference paid endpoints that are themselves unavailable
- Cloudflare trycloudflare.com tunnel may expire, causing DNS resolution failure

## How this service works

Free machine-readable catalog for two paid agent utilities: Base USDC settlement proof and x402 resource repeat-demand versus one-shot usage analysis.

## Output

A machine-readable catalog (likely JSON) listing two paid utility endpoints: (1) a Base USDC settlement proof service and (2) an x402 resource repeat-demand versus one-shot usage analysis service, including their descriptions, pricing, and access metadata.

## 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"
    },
    "method": {
     "enum": [
      "GET"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "properties": {},
     "additionalProperties": false
    }
   },
   "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/agent-trust-utilities-usdc-proof-x402-usage-analysis-catalog-801d2f83/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from molecular-crafts-confidential-guam.trycloudflare.com](https://www.zero.xyz/host/molecular-crafts-confidential-guam.trycloudflare.com/llms.txt)