https://statepulse-api.hahavoid0.workers.dev/agent/preflightPOST /agent/preflight · x402 API by statepulse-api
One call that pre-flights an onchain transaction for an agent: simulates the call for reverts, checks the sender wallet's native gas balance, and reads current Base gas — returning a single GO/NO_GO verdict with reasons. Replaces 3 separate calls (simulate + balances + gas-history) every agent runs before transacting. Matches: pre-transaction check, agent transaction guard, revert + balance + gas preflight, onchain go/no-go, safe-to-send checker, autonomous trade preflight.
What does this x402 API do?
https://statepulse-api.hahavoid0.workers.dev/agent/preflight. This is an x402-gated POST API resource from statepulse-api. TOLL·402 did not invoke this route automatically because doing so was not considered safe. 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 did not invoke this route automatically because doing so was not considered safe
- Resource ID
- bc827dbc8ef29597ebde9cc8
Start with a quote-only recipe. Payment signing stays in your project.
const response = await fetch("https://statepulse-api.hahavoid0.workers.dev/agent/preflight", {
method: "POST",
headers: { "content-type": "application/json" },
body: JSON.stringify({
"type": "http",
"method": "POST",
"bodyType": "json",
"bodyFieldNames": [
"chain",
"data",
"to",
"wallet"
],
"pathParamNames": [],
"queryParamNames": []
}),
});
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.Review the provider input schema before running this non-read-only method. No payment code is included.
- Exact route checked
not safely testable · potentially-mutating-method:POST
- Origin reachable
HEAD https://statepulse-api.hahavoid0.workers.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.