Roundhouse

TrollBridge

NOT AN AUDIT — simulation, not a guarantee: transaction dry-run ($0.10) — simulate any call against live public RPCs before you send it: would-succeed vs would-revert verdict, revert reason decoded, gas estimate in native + USD. Toll: $0.10 USDC on Base or Solana.

MediaLiveeip155:8453Exactvia cdp
https://mini-tollbooth.onrender.com/tx-simulate
Verdict-intelTx-safetySimulationDefiProtection
Calls · 30d
1→ 0%
This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 18 snapshots so far.
$7.61
Verified settled volume
172 settlements proven x402 by their on-chain EIP-3009 marker.
$0.100
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 2026-10-05 20:12Z
—
Upstream on-chain volume
Reported by the source catalog.
Paid to
0x8BE8D056d5F0bEF850eC9ed5C4a8d647cBE896C0

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.

Live 402 challenge

Captured by the enrichment pass, not read just now. Prices can change — always read the 402 the endpoint answers with.

{
  "error": "Payment required",
  "pitch": "NOT AN AUDIT — simulation, not a guarantee. Don't send a transaction you haven't rehearsed — dry-run it against live RPCs, get the would-revert verdict with the reason and the gas cost, one 10¢ call.",
  "stats": {
    "note": "eth_call + estimateGas against live RPCs → would-revert verdict, reason, gas cost — simulation, not a guarantee",
    "chains": [
      "base",
      "ethereum"
    ]
  },
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "version": "2"
      },
      "payTo": "0x8BE8D056d5F0bEF850eC9ed5C4a8d647cBE896C0",
      "amount": "100000",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 300
    },
    {
      "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
      "extra": {
        "feePayer": "BFK9TLC3edb13K6v4YyH3DwPb5DSUpkWvb7XnqCL9b4F"
      },
      "payTo": "CDhLHtuj1HnPVDuZVtJxyw5aEpf6ZQxfBTrqAtFcWb2e",
      "amount": "100000",
      "scheme": "exact",
      "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
      "maxTimeoutSeconds": 300
    }
  ],
  "resource": {
    "url": "https://mini-tollbooth.onrender.com/tx-simulate",
    "tags": [
      "verdict-intel",
      "tx-safety",
      "simulation",
      "defi",
      "protection"
    ],
    "mimeType": "application/json",
    "description": "NOT AN AUDIT — simulation, not a guarantee: transaction dry-run ($0.10) — simulate any call against live public RPCs before you send it: would-succeed vs would-revert verdict, revert reason decoded, gas estimate in native + USD. Toll: $0.10 USDC on Base or Solana.",
    "serviceName": "TrollBridge"
  },
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "type": "http",
          "method": "GET",
          "queryParams": {
            "to": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
            "data": "0x095ea7b30000000000000000000000008be8d056d5f0bef850ec9ed5c4a8d647cbe896c0ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff",
            "from": "0x8BE8D056d5F0bEF850eC9ed5C4a8d647cBE896C0",
            "chain": "base"
          }
        },
        "output": {
          "type": "json",
          "example": {
            "lane": "/tx-simulate",
            "chain": "base",
            "verdict": "would-succeed",
            "simulation": "eth_call + estimateGas against live public RPCs",
            "description": "NOT AN AUDIT — simulation, not a guarantee: transaction dry-run ($0.10) — simulate any call against live public RPCs before you send it: would-succeed vs would-revert verdict, revert reason decoded, gas estimate in native + USD.",
            "gas_estimate": {
              "gas_units": 23697,
              "cost_native": "1.4e-7",
              "cost_usd_approx": 0.0004
            },
            "revert_reason": null
          }
        }
      },
      "schema": {
        "type": "object",
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "required": [
          "input"
        ],
        "properties": {
          "input": {
            "type": "object",
            "required": [
              "type",
              "method"
            ],
            "properties": {
              "type": {
                "type": "string",
                "const": "http"
              },
              "method": {
                "enum": [
                  "GET"
                ],
                "type": "string"
              },
              "queryParams": {
                "type": "object",
                "required": [
                  "to",
                  "data",
                  "from"
                ],
                "properties": {
                  "to": {
                    "type": "string",
                    "description": "Target contract address the transaction calls (0x… on Base or Ethereum)."
                  },
                  "data": {
                    "type": "string",
                    "description": "Hex calldata of the transaction (0x…)."
                  },
                  "from": {
                    "type": "string",
                    "description": "Wallet address that would send the transaction (0x…)."
                  },
                  "chain": {
                    "enum": [
                      "base",
                      "ethereum"
                    ],
                    "type": "string",
                    "description": "Which chain (default base)."
                  },
                  "value": {
                    "type": "string",
                    "description": "Native currency value in wei, decimal or 0x… hex (default 0)."
                  }
                }
              }
            },
            "additionalProperties": false
          },
          "output": {
            "type": "object",
            "required": [
              "type"
            ],
            "properties": {
              "type": {
                "type": "string"
              },
              "example": {
                "type": "object"
              }
            }
          }
        }
      }
    }
  },
  "x402Version": 2,
  "fuel_savings": "Save 25% with TrollBridge Fuel (GAS): 1 GAS = 1 crossing on 2-cent lanes, 3 GAS on 5-cent lanes, 6 GAS on 10-cent protection lanes. Pump: 0x8C84E6D97847A47aeb94Bb07Dc81Dad1560eEfa2 on Base. Free info: GET /fuel"
}

Accepts

The payment requirements as published to the catalog. Read the live 402 before paying — a price here is a claim, not a quote.

0.1USDC≈ $0.1 USD
on Base · exact scheme

Pay 0.1 USDC on Base to 0x8BE8…896C0. The signed payment is good for 5 minutes.

Paid to
0x8BE8…896C0
USD Coin contract
0x8335…02913
Payment window
5 minutes
As published
100000 smallest units
100000units
on solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp · exact scheme

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
CDhLHt…cWb2e
Token contract
EPjFWd…TDt1v
Payment window
5 minutes
The catalog’s raw entry
[
  {
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "extra": {
      "name": "USD Coin",
      "version": "2"
    },
    "payTo": "0x8BE8D056d5F0bEF850eC9ed5C4a8d647cBE896C0",
    "amount": "100000",
    "scheme": "exact",
    "network": "eip155:8453",
    "maxTimeoutSeconds": 300
  },
  {
    "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
    "extra": {
      "feePayer": "D6ZhtNQ5nT9ZnTHUbqXZsTx5MH2rPFiBBggX4hY1WePM"
    },
    "payTo": "CDhLHtuj1HnPVDuZVtJxyw5aEpf6ZQxfBTrqAtFcWb2e",
    "amount": "100000",
    "scheme": "exact",
    "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
    "maxTimeoutSeconds": 300
  }
]

Extensions

{
  "bazaar": {
    "info": {
      "input": {
        "type": "http",
        "method": "GET",
        "queryParams": {
          "to": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
          "data": "0x095ea7b30000000000000000000000008be8d056d5f0bef850ec9ed5c4a8d647cbe896c0ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff",
          "from": "0x8BE8D056d5F0bEF850eC9ed5C4a8d647cBE896C0",
          "chain": "base"
        }
      },
      "output": {
        "type": "json",
        "example": {
          "lane": "/tx-simulate",
          "chain": "base",
          "verdict": "would-succeed",
          "simulation": "eth_call + estimateGas against live public RPCs",
          "description": "NOT AN AUDIT — simulation, not a guarantee: transaction dry-run ($0.10) — simulate any call against live public RPCs before you send it: would-succeed vs would-revert verdict, revert reason decoded, gas estimate in native + USD.",
          "gas_estimate": {
            "gas_units": 23697,
            "cost_native": "1.4e-7",
            "cost_usd_approx": 0.0004
          },
          "revert_reason": null
        }
      }
    },
    "schema": {
      "type": "object",
      "$schema": "https://json-schema.org/draft/2020-12/schema",
      "required": [
        "input"
      ],
      "properties": {
        "input": {
          "type": "object",
          "required": [
            "type",
            "method"
          ],
          "properties": {
            "type": {
              "type": "string",
              "const": "http"
            },
            "method": {
              "enum": [
                "GET"
              ],
              "type": "string"
            },
            "queryParams": {
              "type": "object",
              "required": [
                "to",
                "data",
                "from"
              ],
              "properties": {
                "to": {
                  "type": "string",
                  "description": "Target contract address the transaction calls (0x… on Base or Ethereum)."
                },
                "data": {
                  "type": "string",
                  "description": "Hex calldata of the transaction (0x…)."
                },
                "from": {
                  "type": "string",
                  "description": "Wallet address that would send the transaction (0x…)."
                },
                "chain": {
                  "enum": [
                    "base",
                    "ethereum"
                  ],
                  "type": "string",
                  "description": "Which chain (default base)."
                },
                "value": {
                  "type": "string",
                  "description": "Native currency value in wei, decimal or 0x… hex (default 0)."
                }
              }
            }
          },
          "additionalProperties": false
        },
        "output": {
          "type": "object",
          "required": [
            "type"
          ],
          "properties": {
            "type": {
              "type": "string"
            },
            "example": {
              "type": "object"
            }
          }
        }
      }
    }
  }
}

Provenance

Seen in the source catalog
2026-10-05 20:12Z
Last indexed by Roundhouse
2026-10-17 12:30Z
Last enriched (probe, favicon, geo)
2026-10-05 21:16Z
x402 version
2
Max timeout
300s
Liveness probe
HTTP 402
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. 18 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 TrollBridge 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=TrollBridge'
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://mini-tollbooth.onrender.com/tx-simulate, 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. Either pay over x402 (mint a personal key for $0.01 at
GET https://api.roundhouseai.io/v0/test/x402), or ask me for an organization key, which I create at
https://roundhouseai.io/dashboard/connections. If you have neither, ask before going further.

If you do not have Roundhouse tools or skills installed, read
https://roundhouseai.io/skill.md first — it is the whole procedure.