# kenoodl.com x402 Preflight Check

> kenoodl.com x402 Preflight Check is a paid API for AI agents from kenoodl.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-14).

Verifies that a Base wallet can transact via x402 and returns its USDC balance in a signed, on-chain-anchored receipt for $0.01 USDC

## Facts

- Endpoint: GET https://kenoodl.com/preflight
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/kenoodl-com-x402-preflight-check-59aa3a7e
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_I0Ye8ukrCO4FsKNbShXRF

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 kenoodl-com-x402-preflight-check-59aa3a7e
```

Example prompt: Run a preflight check on my Base wallet 0xAbc123... to confirm it can make x402 payments and show me my current USDC balance with a signed receipt.

## When to prefer this

Use this endpoint before deploying any real-volume x402 payment workflow to confirm your wallet is correctly configured, has sufficient balance, and can successfully complete a transaction. Ideal as a smoke test or health check for x402-based agent payment pipelines on Base.

## Known failure modes

- Insufficient USDC balance to cover the $0.01 fee — payment rejected
- Invalid or malformed wallet address — validation error returned
- Wallet not on Base network — incompatible network error
- x402 payment payload missing or malformed — authentication failure
- Network congestion causing timeout before receipt is issued

## How this service works

x402-preflight: confirm your wallet can transact, and see your balance, in one certified call. Pay $0.01 USDC on Base, get a signed on-chain-anchored receipt. The safe first transaction before you ship real volume.

## Output

A signed, on-chain-anchored receipt confirming the wallet's ability to transact via x402, including the wallet's current USDC balance on Base. Costs $0.01 USDC per call.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "wallet": {
   "type": "string",
   "description": "The Base wallet you want to preflight. If omitted, it defaults to the paying wallet read from the x402 payment payload."
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/kenoodl-com-x402-preflight-check-59aa3a7e/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from kenoodl.com](https://www.zero.xyz/host/kenoodl.com/llms.txt)