Tollbooth
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.
The wallet the 402 directs payment to. Its whole payment record — every payer, every chain — is on the merchant page.
Asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913
The payTo wallet does not resolve to a registered ERC-8004 agent. That is not a verdict on the service — most of the catalog is unregistered.
Accepts
The payment requirements as published to the catalog. Read the live 402 before paying — a price here is a claim, not a quote.
Pay 0.005 USDC on Base to 0xb6eB…25cc0. The signed payment is good for 5 minutes.
- Paid to
- 0xb6eB…25cc0
- USD Coin contract
- 0x8335…02913
- Payment window
- 5 minutes
- As published
- 5000 smallest units
That figure is in the token’s smallest units. Roundhouse does not hold this contract’s decimals, so it is shown as published rather than converted.
- Paid to
- 5VG7o7…vaePF
- Token contract
- EPjFWd…TDt1v
- Payment window
- 5 minutes
The catalog’s raw entry
[
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0xb6eBBbcE1537082a20B891AEec75DBC32b825cc0",
"amount": "5000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
},
{
"asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
"extra": {
"feePayer": "BENrLoUbndxoNMUS5JXApGMtNykLjFXXixMtpDwDR9SP",
"recentBlockhash": "3zt8BaW3KHDAPcSPMh9bWQJHTN9ndX9nfwUApcvYpow5",
"lastValidBlockHeight": "419746055"
},
"payTo": "5VG7o7dGx4x8uxf9AeH1rAdmv5LAtKSSUcVugf8vaePF",
"amount": "5000",
"scheme": "exact",
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"maxTimeoutSeconds": 300
}
]Extensions
{
"bazaar": {
"info": {
"input": {
"body": {
"chain": "solana",
"taker": "5VG7o7dGx4x8uxf9AeH1rAdmv5LAtKSSUcVugf8vaePF",
"amount": "1000000000",
"inputToken": "So11111111111111111111111111111111111111112",
"outputToken": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
"slippageBps": 100
},
"type": "http",
"method": "POST",
"bodyType": "json"
},
"output": {
"type": "json",
"example": {
"chain": "solana",
"quote": {
"chain": "solana",
"feeBps": 75,
"inAmount": "1000000000",
"outAmount": "72895995",
"feeApplied": true,
"inputToken": "So11111111111111111111111111111111111111112",
"outputToken": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
"slippageBps": 100
},
"receipt": {
"id": "0580b392-b2fb-4d14-9524-9b3d90878dbd",
"kind": "swap-build",
"chain": "solana",
"feeBps": 75,
"createdAt": "2026-08-04T00:58:48.489Z",
"signature": "<hmac-sha256>",
"feeApplied": true
},
"transaction": {
"note": "Sign this versioned transaction with the taker keypair and submit it to Solana.",
"encoding": "base64",
"serializedTransaction": "<base64 unsigned versioned transaction>"
}
}
}
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"input"
],
"properties": {
"input": {
"type": "object",
"required": [
"type",
"method",
"bodyType",
"body"
],
"properties": {
"body": {
"required": [
"chain",
"inputToken",
"outputToken",
"amount",
"taker"
],
"properties": {
"chain": {
"enum": [
"solana",
"base",
"ethereum",
"arbitrum",
"polygon",
"optimism",
"bsc",
"avalanche"
],
"type": "string",
"description": "Chain to swap on"
},
"taker": {
"type": "string",
"description": "Wallet address that will sign and send the swap"
},
"amount": {
"type": "string",
"description": "Sell amount as an integer string in the input token's base units"
},
"inputToken": {
"type": "string",
"description": "Token being sold: mint address (solana) or ERC-20 address (EVM chains)"
},
"outputToken": {
"type": "string",
"description": "Token being bought: mint address (solana) or ERC-20 address (EVM chains)"
},
"slippageBps": {
"type": "integer",
"description": "Max slippage in basis points (default 100)"
}
}
},
"type": {
"type": "string",
"const": "http"
},
"method": {
"enum": [
"POST"
],
"type": "string"
},
"bodyType": {
"enum": [
"json",
"form-data",
"text"
],
"type": "string"
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"example": {
"type": "object",
"required": [
"chain",
"transaction",
"quote",
"receipt"
],
"properties": {
"chain": {
"enum": [
"solana",
"base",
"ethereum",
"arbitrum",
"polygon",
"optimism",
"bsc",
"avalanche"
],
"type": "string"
},
"quote": {
"type": "object",
"properties": {
"feeBps": {
"type": "integer"
},
"inAmount": {
"type": "string"
},
"outAmount": {
"type": "string"
},
"feeApplied": {
"type": "boolean"
}
}
},
"receipt": {
"type": "object",
"properties": {
"id": {
"type": "string"
},
"signature": {
"type": "string"
}
},
"description": "HMAC-signed audit receipt for this paid build"
},
"transaction": {
"type": "object",
"description": "Unsigned transaction for the taker wallet to sign and submit"
}
}
}
}
}
}
}
}
}Provenance
- Seen in the source catalog
- 2026-08-25 19:16Z
- Last indexed by Roundhouse
- 2026-09-04 19:00Z
- Last enriched (probe, favicon, geo)
- 2026-09-14 03:15Z
- x402 version
- 2
- Max timeout
- 300s
- Liveness probe
- HTTP 404
Hand this page to an agent
Copy the prompt and paste it into Claude, an MCP client or your own agent — it will vet this service and call it over the free read API. No key, no account.
GET api.roundhouseai.io/v0/endpoints
This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 11 snapshots so far. Verified volume counts only settlements with an on-chain EIP-3009 marker.
Show the promptHide the prompt
Using Roundhouse, look up the x402 service Tollbooth and tell me whether it is worth paying: what a call costs, whether the endpoint answered when last probed, and what its payment record actually shows. curl -s 'https://api.roundhouseai.io/v0/endpoints?q=Tollbooth' curl -s 'https://api.roundhouseai.io/v0/merchants/<the payTo wallet returned above>' Then call it: read the price from the live 402 at https://api.tollboothswap.xyz/v1/swap/build, never from a cached figure, and pay with an x402 client. The /v0 API needs an API key (`authorization: Bearer rh_live_…`) on everything except /v0/unified* and /v0/endpoints. Mint a personal key for $0.01 at GET https://api.roundhouseai.io/v0/test/x402, or use an organization key from https://roundhouseai.io/dashboard/team. If you do not have Roundhouse tools or skills installed, read https://roundhouseai.io/skill.md first — it is the whole procedure.