x402 API Key + URL Packs: API URL Readiness Check
Verify the OpenAI-compatible base URL, model list contract, request shape, secret boundary, and next key-pack route before buying a URL + API key quota pack. Standalone x402 URL + Key quota pack checkout with a $0.001 URL readiness check and a $1 quota key trial pack priced at $0.12. Start buyer evaluation at https://x402-key.558686.xyz/x402/buyer-use-cases or machine JSON https://x402-key.558686.xyz/x402/buyer-use-cases.json; checkout contract JSON is https://x402-key.558686.xyz/x402/checkout.json. Route payment activation JSON is https://x402-key.558686.xyz/x402/route/api-url-readiness-check/payment-activation.json. Browsers can inspect the quote, but payment requires a buyer-owned runtime that signs and retries the same request with X-PAYMENT. Buyers can download the route-specific firs
Start with a quote-only recipe. Payment signing stays in your project.
const response = await fetch("https://x402-key.558686.xyz/v1/tools/api-url-readiness-check", {
method: "GET",
});
console.log(response.status);
console.log(Object.fromEntries(response.headers));
console.log((await response.text()).slice(0, 1000));
// A valid 402 is a quote, not a completed paid call.This sends no payment. Inspect the 402 response before adding a wallet-enabled client.
- Exact route checked
skipped origin unreachable · origin-check:ERR_SSL_PACKET_LENGTH_TOO_LONG
- Origin unavailable
ERR_SSL_PACKET_LENGTH_TOO_LONG
- Observed in 402-index
Discovered through self-registered.
- Registry record checked
Registry health: healthy.
EVIDENCE
Each record has an exact-route quote outcome. Unresolved templates and potentially mutating methods are labeled instead of being invoked without provider-specific test input. A quote is still separate from a settled paid call.