https://k2so-8080.on.ascii.dev/api/services/x402-challenge-payability-and-payment-scheme-comGET /api/services/x402-challenge-payability-and-payment-scheme-com · x402 API by k2so-8080
Paid agent-facing brief on x402 challenge payability and payment-scheme compatibility check: agent-side procedure that grades an incoming 402 challenge before any signature is attempted, verifying challenge version (v1 vs v2), network scheme (eip155: 8453, solana, xrpl, skale), whether the agent's wallet client has a registered scheme for that network, and price against spend caps. Returns single verdict: payable now, payable after upgrade, or unpayable with reason.. Blunt decision procedure,
What does this x402 API do?
https://k2so-8080.on.ascii.dev/api/services/x402-challenge-payability-and-payment-scheme-com. This is an x402-gated GET API resource from k2so-8080. TOLL·402 records origin and cross source evidence as of 2026-08-15. No normalized USD price is recorded; the listing names Base. No settled paid call has been verified.
- Published price
- No normalized USD price is recorded
- Networks
- Base
- Latest evidence
- TOLL·402 records origin and cross source evidence as of 2026-08-15
- Resource ID
- 342f2c503f720c8e1167cd57
Start with a quote-only recipe. Payment signing stays in your project.
const response = await fetch("https://k2so-8080.on.ascii.dev/api/services/x402-challenge-payability-and-payment-scheme-com", {
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
http 402 invalid · accept-0:resource-mismatch;accepts-missing
- Origin reachable
HEAD https://k2so-8080.on.ascii.dev/ returned 200.
- Observed in cdp-bazaar
The registry record was observed and retained with provenance.
- Observed in 402-index
Discovered through bazaar.
- Registry record checked
Registry health: healthy.
What evidence supports this listing?
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. Read the discovery and verification methodology →
Which networks and payment options does it accept?
The normalized listing price is No normalized USD price is recorded. Raw protocol requirements remain visible below for implementation and audit use.