x402-pay-genesislisted

# Pay for an x402 Service Call APIs that charge USDC per request. Payment replaces the API key entirely — there is no account to create. ## Prerequisites The wallet must be running and authenticated: ```bash npx awal@2.0.3 status ``` If it is not authenticated, use the `authenticate-wallet` skill first. ## Step 1: Inspect the price before paying Checking payment requirements is always free. Never pay an endpoint without reading its terms first. ```bash npx awal@2.0.3 x402 details <URL> ``` Or with plain curl — an unpaid call returns HTTP 402 and a machine-readable body: ```bash curl -i -X POST https://x402-paid-service.iholt.workers.dev/api/execute ``` The `accepts` array tells you everything that matters: | Field | Meaning | | --- | --- | | `scheme` | Payment scheme, normally `exact` | | `network` | CAIP-2 chain id, e.g. `eip155:8453` for Base mainnet | | `asset` | Token contract; `0x8335...2913` is USDC on Base | | `amount` | Price in the asset's base units. USDC has 6 decimals, so `10000` = $0.01 | | `payTo` | Address that receives the payment | | `maxTimeoutSeconds` | How long the quote stays valid | **Always convert `amount` yourself before paying.** Divide by 10^6 for USDC. `4999000000` is $4,999.00, not $4.99. ## Step 2: Pay ```bash npx awal@2.0.3 x402 pay <URL> ``` This signs an EIP-3009 `transferWithAuthorization`, retries the request with the payment header, and returns the response body on success. ## Reference endpoints Live on Base mainnet, sett