# x402 Agent Payment Due Diligence Pack (GET)

> x402 Agent Payment Due Diligence Pack (GET) is a paid API for AI agents from gpt55.558686.xyz, paid per call via x402, $0.019/call, status unknown (last checked 2026-09-15).

Generates a machine-readable due diligence approval artifact for x402 paid API routes before allowing real agent spend, covering policy, compatibility, receipt evidence, and stop conditions.

## Facts

- Endpoint: GET https://gpt55.558686.xyz/v1/tools/x402-agent-payment-due-diligence-pack
- Price: $0.019/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/x402-agent-payment-due-diligence-pack-get-3ca7bc28
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_FQPNNUbOLW3YL1uqTAvXG

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-agent-payment-due-diligence-pack-get-3ca7bc28
```

Example prompt: Before my agent starts paying for that route at https://api.example.com/v1/some-service, run a due diligence pack on it — my daily budget is $5 USDC, max $0.05 per call, I expect payTo 0xABC...123 on Base with USDC, my runtime is Node.js, and I want receipt evidence required with human approval on the first payment.

## When to prefer this

Use this endpoint when an AI agent or orchestration team has received an x402 quote and needs a single, deterministic, machine-readable approval artifact before authorizing real USDC spend — especially when MCP/Flowise guard configs, receipt policies, and stop conditions are needed in one call. Prefer this GET variant when query parameters are more convenient than a JSON body (e.g. crawlers, wallets, simple agent runtimes).

## Known failure modes

- Missing required paid_route/url/endpoint parameter returns validation error
- Invalid or unreachable paid route URL may result in incomplete analysis
- Budget values out of range (below 0.0001 or above limits) return schema validation error
- timeout_ms outside 1000–15000 range rejected
- Payment not made or insufficient USDC balance returns 402 response

## How this service works

Turn a live x402 paid route, buyer budget, expected payTo/network/asset, runtime, and receipt policy into an agent-payment due diligence pack: dueDiligenceDecision, goNoGoPolicyPack, clientCompatibilityAdapter, receiptEvidencePolicy, repeatPurchasePolicy, firstPaymentRunbook, MCP/Flowise guard configs, and stop conditions. Built for teams that see x402 quotes but need one machine-readable approval artifact before allowing real agent spend. This deterministic endpoint never asks for private keys and never sends a payment header to the target service. GET variant for agents, crawlers, and wallets that prefer query parameters over a JSON body. Pay up to $0.019 per request with x402 USDC on Base.

## Output

Returns a structured JSON artifact containing: dueDiligenceDecision (go/no-go), goNoGoPolicyPack, clientCompatibilityAdapter settings, receiptEvidencePolicy, repeatPurchasePolicy, firstPaymentRunbook steps, MCP/Flowise guard configurations, and stop conditions — all machine-readable, no private keys requested, no payment headers sent to target.

## 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",
     "anyOf": [
      {
       "required": [
        "paid_route"
       ]
      },
      {
       "required": [
        "url"
       ]
      },
      {
       "required": [
        "endpoint"
       ]
      }
     ],
     "properties": {
      "url": {
       "type": "string",
       "maxLength": 2048,
       "minLength": 1
      },
      "method": {
       "enum": [
        "GET",
        "POST",
        "PUT",
        "PATCH",
        "DELETE"
       ],
       "type": "string"
      },
      "endpoint": {
       "type": "string",
       "maxLength": 2048,
       "minLength": 1
      },
      "buyer_team": {
       "type": "string",
       "maxLength": 160
      },
      "paid_route": {
       "type": "string",
       "maxLength": 2048,
       "minLength": 1
      },
      "timeout_ms": {
       "type": "integer",
       "maximum": 15000,
       "minimum": 1000
      },
      "buyer_runtime": {
       "type": "string",
       "maxLength": 80
      },
      "expected_asset": {
       "type": "string",
       "maxLength": 80
      },
      "wallet_env_var": {
       "type": "string",
       "maxLength": 80
      },
      "expected_pay_to": {
       "type": "string",
       "maxLength": 120
      },
      "expected_network": {
       "type": "string",
       "maxLength": 80
      },
      "daily_budget_usdc": {
       "type": "number",
       "maximum": 10000,
       "minimum": 0.0001
      },
      "max_usdc_per_call": {
       "type": "number",
       "maximum": 100,
       "minimum": 0.0001
      },
      "request_body_example": {
       "type": [
        "object",
        "string",
        "null"
       ]
      },
      "require_receipt_evidence": {
       "type": "boolean"
      },
      "first_payment_requires_human_approval": {
       "type": "boolean"
      }
     },
     "additionalProperties": false
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object",
     "properties": {
 
… (truncated)
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/x402-agent-payment-due-diligence-pack-get-3ca7bc28/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from gpt55.558686.xyz](https://www.zero.xyz/host/gpt55.558686.xyz/llms.txt)