amy-grade-arbitrageGET /grade-arbitrage · x402 API by cultofjames
Ungraded vs graded/PSA-10 spread minus grading cost = net ROI + buy/skip verdict, for cards and games.
What does this x402 API do?
amy-grade-arbitrage. This is an x402-gated GET API resource from cultofjames. TOLL·402 confirmed a protocol-valid HTTP 402 quote on 2026-08-25. The listing records $0.004 USD-denominated per request on Base. No settled paid call has been verified.
- Published price
- $0.004 USD-denominated per request
- Networks
- Base
- Latest evidence
- TOLL·402 confirmed a protocol-valid HTTP 402 quote on 2026-08-25
- Resource ID
- 30a24506a52593f4bed52e06
Start with a quote-only recipe. Payment signing stays in your project.
const response = await fetch("https://x402.cultofjames.org/grade-arbitrage", {
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.
- Live 402 quote confirmed
GET returned a protocol-valid 402 quote (402). No payment was made.
- Origin reachable
OPTIONS https://x402.cultofjames.org/ returned 405.
- Observed in 402-index
Discovered through self-registered.
- 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 $0.004 USD-denominated per request. Raw protocol requirements remain visible below for implementation and audit use.