# Cloudflare Wallets x402 Payment Claim Verification Brief

> Cloudflare Wallets x402 Payment Claim Verification Brief is a paid API for AI agents from k2so.wrong.systems, paid per call via x402, $0.002/call, status down (last checked 2026-10-20).

Returns a deterministic decision procedure brief for verifying whether an x402 payment claim from a Cloudflare-hosted agent wallet is genuine, covering wallet binding, authorization, spend limits, settlement rail, and receipt binding.

## Facts

- Endpoint: GET https://k2so.wrong.systems/api/services/cloudflare-wallets-x402-payment-claim-verificati?utm_source=zero.xyz
- Price: $0.002/call
- Payment: x402
- Status: down
- Last checked: 2026-10-20
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/cloudflare-wallets-x402-payment-claim-verification-brief-8fdc9a8c
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_8v_YAZNCp48lsALeYqvIH

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 cloudflare-wallets-x402-payment-claim-verification-brief-8fdc9a8c
```

Example prompt: I just received an x402 payment claim from a Cloudflare-hosted agent wallet — walk me through the full decision procedure to verify it's genuine, including how to check the wallet binding proof, session-key authorization, spend limits, and whether the settlement rail was card-backed or onchain USDC.

## When to prefer this

Choose this endpoint when an AI agent or API gateway needs a structured, authoritative decision procedure specifically for x402 payment claims originating from Cloudflare-hosted agent wallets — particularly when the verification must cover Cloudflare Wallets-specific custody signals (passkey/session-key, wallet binding), settlement rail differentiation (Visa/Stripe card vs onchain USDC), and spend-limit enforcement context. Prefer this over generic x402 verifiers when the payer is known to be using Cloudflare's hosted agent wallet infrastructure.

## Known failure modes

- Payment required but not provided — returns 402 with payment details
- Invalid or missing required 'input' object — returns schema validation error
- Invalid method enum value — rejected at schema level
- Topic override not recognized — may fall back to default procedure
- LLM or reasoning backend unavailable — generationSource may fail or return partial brief
- Rate limiting or upstream timeout — no result returned

## How this service works

Paid agent-facing brief on Cloudflare Wallets x402 payment claim verification: hosted agent wallet custody surface. Verify an x402 payment claim originating from a Cloudflare-hosted agent wallet is genuine: wallet issuance/binding proof, passkey or session-key authorization, per-API spend-limit context, settlement provenance when the rail is card-backed (Visa/Stripe) vs onchain USDC, and receipt-to-challenge binding. Deterministic verdicts with evidence requirements.. Blunt decision procedure,

## Output

A structured brief containing a deterministic decision procedure in prose form, covering wallet issuance/binding proof requirements, passkey or session-key authorization checks, per-API spend-limit context verification, settlement provenance differentiation (card-backed Visa/Stripe vs onchain USDC), and receipt-to-challenge binding validation — along with metadata including generation timestamp, source, and service slug.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET",
      "HEAD",
      "DELETE"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "properties": {
      "meta": {
       "enum": [
        "0",
        "1"
       ],
       "type": "string",
       "description": "Set to 1 for free metadata JSON (no payment required)"
      },
      "topic": {
       "type": "string",
       "description": "Optional topic override for the decision procedure"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object",
     "title": "Cloudflare Wallets x402 payment claim verification: hosted agent walle paid response",
     "$schema": "https://json-schema.org/draft/2020-12/schema",
     "required": [
      "ok",
      "paid",
      "service",
      "provider",
      "result"
     ],
     "properties": {
      "ok": {
       "type": "boolean"
      },
      "paid": {
       "type": "boolean"
      },
      "result": {
       "type": "object",
       "required": [
        "ok",
        "service"
       ],
       "properties": {
        "ok": {
         "type": "boolean",
         "description": "Handler success"
        },
        "brief": {
         "type": "string",
         "description": "Decision procedure prose for agents"
        },
        "model": {
         "type": "string"
        },
        "topic": {
         "type": "string"
        },
        "service": {
         "type": "string",
         "description": "Service slug"
        },
        "procedure": {
         "type": "string"
        },
        "generatedAt": {
         "type": "string",
         "description": "ISO-8601 timestamp"
        },
        "generationSource": {
         "enum": [
          "llm",
          "reasoning",
          "deterministic"
         ],
         "type": "string"
        }
       }
      },
      "payment": {
       "type": "object",
       "properties": {
        "code": {
         "type": "string"
        },
        "payer": {
         "type": "string"
        },
        "detail": {
         
… (truncated)
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "ok": true,
  "paid": true,
  "result": {
   "ok": true,
   "brief": "plain prose decision procedure (120+ words)",
   "model": "deepseek/deepseek-v4-flash-0731",
   "topic": "string topic",
   "service": "cloudflare-wallets-x402-payment-claim-verificati",
   "procedure": "same as brief",
   "generatedAt": "2026-01-01T00:00:00.000Z",
   "generationSource": "deterministic"
  },
  "service": "cloudflare-wallets-x402-payment-claim-verificati",
  "provider": "K-2SO"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/cloudflare-wallets-x402-payment-claim-verification-brief-8fdc9a8c/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from k2so.wrong.systems](https://www.zero.xyz/host/k2so.wrong.systems/llms.txt)