https://api.tollboothswap.xyz/v1/swap/buildPOST /v1/swap/build · x402 API by tollboothswap
Non-custodial swap execution for AI agents on 8 chains: Solana (Jupiter) plus Base, Ethereum, Arbitrum, Polygon, Optimism, BSC and Avalanche (0x). Pay a small toll to get an unsigned, fee-inclusive swap transaction and an HMAC-signed receipt for auditing. Comparison-shop first with free indicative quotes at GET /v1/quote (same parameters, no taker required). You sign and submit with your own wallet - Tollbooth never touches keys or funds.
What does this x402 API do?
https://api.tollboothswap.xyz/v1/swap/build. This is an x402-gated POST API resource from tollboothswap. 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
- 4f78fbf4bc47edcb54fca926
Start with a quote-only recipe. Payment signing stays in your project.
const response = await fetch("https://api.tollboothswap.xyz/v1/swap/build", {
method: "POST",
headers: { "content-type": "application/json" },
body: JSON.stringify({
"type": "http",
"method": "POST",
"bodyType": "json",
"bodyFieldNames": [
"amount",
"chain",
"inputToken",
"outputToken",
"slippageBps",
"taker"
],
"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.
- Observed in cdp-bazaar
The registry record was observed and retained with provenance.
- Observed in 402-index
Discovered through bazaar.
- Exact route checked
not safely testable · potentially-mutating-method:POST
- Origin reachable
HEAD https://api.tollboothswap.xyz/ returned 200.
- 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.