Measure payload byte size against soft and hard ceilings before payingGET /api/v1/x402/payload-size-check · x402 API by delx
Measure payload byte size against soft and hard ceilings before paying — first-party local utility for agent preflight and proven micro-utils expansion. Returns deterministic machine-readable JSON for $0.001 USDC via x402 on Base. Execution is first-party, local-only, stateless, and memory-only with no paid upstream, no input retention, no web search, no live RPC, and no mediagen. Results are advisory; the caller owns authorization, budgets, and production controls. Sibling of Delx routes that…
What does this x402 API do?
Measure payload byte size against soft and hard ceilings before paying. This is an x402-gated GET API resource from delx. TOLL·402 confirmed a protocol-valid HTTP 402 quote on 2026-08-24. No normalized USD price is recorded; the listing names Base and Solana. No settled paid call has been verified.
- Published price
- No normalized USD price is recorded
- Networks
- Base · Solana
- Latest evidence
- TOLL·402 confirmed a protocol-valid HTTP 402 quote on 2026-08-24
- Resource ID
- 00a804195cef27eba669b305
Start with a quote-only recipe. Payment signing stays in your project.
const response = await fetch("https://api.delx.ai/api/v1/x402/payload-size-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.
- Live 402 quote confirmed
GET returned a protocol-valid 402 quote (402). No payment was made.
- Origin reachable
HEAD https://api.delx.ai/ returned 200.
- Observed in 402-index
Discovered through bazaar.
- Registry record checked
Registry health: degraded.
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.