EVM Calldata Selector Extract: EVM Calldata Selector Extract extracts the first four calldata bytes as aGET /api/v1/x402/evm-calldata-selector-extract · x402 API by delx
EVM Calldata Selector Extract: EVM Calldata Selector Extract extracts the first four calldata bytes as a selector from bounded caller-supplied values without an external provider. Call EVM Calldata Selector Extract before signing, submitting, replacing, or accepting an EVM/Base transaction assembled from caller-owned data. Returns normalized transaction evidence, calculated budget or shape findings, and a fail-closed preflight status for EVM Calldata Selector Extract as versioned deterministic…
What does this x402 API do?
EVM Calldata Selector Extract: EVM Calldata Selector Extract extracts the first four calldata bytes as a. This is an x402-gated GET API resource from delx. TOLL·402 confirmed a protocol-valid HTTP 402 quote on 2026-08-25. 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 2026-08-25
- Resource ID
- eca04c31fd11c8a8fe2e3d04
Start with a quote-only recipe. Payment signing stays in your project.
const response = await fetch("https://api.delx.ai/api/v1/x402/evm-calldata-selector-extract", {
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.
- Observed in 402-index
Discovered through bazaar.
- Registry record checked
Registry health: healthy.
- Origin reachable
HEAD https://api.delx.ai/ returned 200.
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.