# xx402 X402 Preflight Resource Checker

> xx402 X402 Preflight Resource Checker is a paid API for AI agents from x402.xx402.icu, paid per call via x402, $0.01/call, status down (last checked 2026-10-27).

Probes an x402-gated API endpoint to assess payment requirements, safety, and purchase viability before committing funds

## Facts

- Endpoint: GET https://x402.xx402.icu/api/x402-resource-preflight?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: down
- Last checked: 2026-10-27
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/xx402-x402-preflight-resource-checker-86e5b00c
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_iYYw08NrGj5KUmPhkcu1Q

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 xx402-x402-preflight-resource-checker-86e5b00c
```

Example prompt: Before my agent pays for the x402 resource at https://x402.xx402.icu/api/base-actionable-risk-feed?query=aerodrome,virtual,base, can you do a preflight check to see if it's safe and worth up to $0.05 USDC on Base mainnet with USDC as the payment asset?

## When to prefer this

Use this endpoint when an AI agent or autonomous system needs to safely evaluate an x402-gated resource before spending USDC — especially to detect payment traps, verify provider trust, confirm payment asset/network match, and get a structured buy/no-buy decision. Prefer this over blindly attempting payment when operating with budget constraints or when dealing with unfamiliar x402 providers.

## Known failure modes

- Target URL is local, private, or credentialed — blocked by the endpoint
- Target resource returns unexpected non-402 response — inconclusive preflight
- Price exceeds max_price_usdc threshold — returns do-not-buy verdict
- Missing bazaar metadata when require_bazaar_metadata is true — flagged for review
- Network mismatch between actual and expected CAIP-2 network — safety check failure
- Target URL is unreachable or times out — failure risk flagged

## How this service works

Paid Base token, wallet, DeFi, chain-read, x402 buyer/seller discovery, and specialized Bitcoin 15-minute Up/Down prediction-market data packets for autonomous agents and risk tools.

## Output

Returns a structured JSON object with a pay/no-pay verdict, payment trap checklist, preflight decision, payment safety checks, provider trust assessment, risk breakdown, budget check, buyer next action instructions, failure risks, retry plan, and source metadata — giving an agent a complete go/no-go decision before committing payment.

## Response schema (JSON Schema)

```json
{
 "keys": [
  "summary",
  "pay_no_pay_verdict",
  "payment_trap_checklist",
  "purchase_acceptance",
  "buyer_next_action",
  "next_paid_call",
  "decision_evidence",
  "repeat_purchase_guard",
  "preflight_decision",
  "payment_safety_checks",
  "priority_queue",
  "risk_breakdown",
  "review_queue",
  "avoid_queue",
  "bucket_counts",
  "next_products",
  "payment_terms",
  "resource_metadata",
  "budget_check",
  "provider_trust",
  "failure_risks",
  "buyer_retry_plan",
  "source_status",
  "sources"
 ],
 "type": "json"
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/xx402-x402-preflight-resource-checker-86e5b00c/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from x402.xx402.icu](https://www.zero.xyz/host/x402.xx402.icu/llms.txt)