Roundhouse AI

Tollbooth

Railway is a full-stack cloud for deploying web apps, servers, databases, and more with automatic scaling, monitoring, and security.

TradingLiveeip155:8453Exactvia cdp
https://tollbooth-production-3845.up.railway.app/v1/swap/build
DefiTradingSwapSolanaBase
Calls · 30d
1→ 0%
This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 9 snapshots so far.
$0.14
Verified settled volume
22 settlements proven x402 by their on-chain EIP-3009 marker.
$0.0050
Listed price
As published in the catalog. Always read the live 402 before paying.
1
Calls · 30d
Upstream's own call count for this endpoint, not ours.
1
Unique payers · 30d
Last called 2026-08-04 01:28Z
—
Upstream on-chain volume
Reported by the source catalog.
Paid to
0xb6eBBbcE1537082a20B891AEec75DBC32b825cc0

The wallet the 402 directs payment to. Its whole payment record — every payer, every chain — is on the merchant page.

Asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913

Provider

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.

0.005USDC≈ $0.005 USD
on Base · exact scheme

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
The catalog’s raw entry
[
  {
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "extra": {
      "name": "USD Coin",
      "version": "2"
    },
    "payTo": "0xb6eBBbcE1537082a20B891AEec75DBC32b825cc0",
    "amount": "5000",
    "scheme": "exact",
    "network": "eip155:8453",
    "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"
                  ],
                  "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 (base)"
                },
                "outputToken": {
                  "type": "string",
                  "description": "Token being bought: mint address (solana) or ERC-20 address (base)"
                },
                "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"
                  ],
                  "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
2026-08-04 01:28Z
Last indexed by Roundhouse
2026-09-03 01:20Z
Last enriched (probe, favicon, geo)
2026-09-14 02:45Z
x402 version
2
Max timeout
300s
Liveness probe
HTTP 404
Report

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. 9 snapshots so far. Verified volume counts only settlements with an on-chain EIP-3009 marker.

Open skill.md
Show 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://tollbooth-production-3845.up.railway.app/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.