Roundhouse

hcrb.in

Google-simple transactional routing bus for autonomous agent and machine-to-machine commerce. Non-custodial HTTP 402 clearing, routing, and settlement on Base L2 with no protocol fee deducted.

InfraLiveeip155:8453Exactvia cdp
https://hcrb.in/v1/tools/settlement-history-check/call
Calls · 30d
2↑ 86%
This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 32 snapshots so far.
$10.15
Verified settled volume
1,289 settlements proven x402 by their on-chain EIP-3009 marker.
$0.020
Listed price
As published in the catalog. Always read the live 402 before paying.
2
Calls · 30d
Upstream's own call count for this endpoint, not ours.
2
Unique payers · 30d
Last called 2026-10-20 20:28Z
—
Upstream on-chain volume
Reported by the source catalog.
Paid to
0xc59c85e661d34084a7769f955d17fd38254a6235

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.

{
  "mcp": "https://hcrb.in/mcp",
  "call": "/v1/tools/settlement-history-check/call",
  "code": "X402_PAYMENT_REQUIRED",
  "docs": "https://hcrb.in/openapi.json",
  "tool": "settlement-history-check",
  "title": "On-Chain Counterparty Settlement History",
  "method": "POST",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "tier": "economy",
        "version": "2",
        "currency": "USDC",
        "multiplier": 1,
        "asset_caip19": "eip155:8453/erc20:0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "payTo_caip10": "eip155:8453:0xc59c85e661d34084a7769f955d17fd38254a6235"
      },
      "payTo": "0xc59c85e661d34084a7769f955d17fd38254a6235",
      "amount": "20000",
      "scheme": "exact",
      "network": "eip155:8453",
      "mimeType": "application/json",
      "resource": "https://hcrb.in/v1/tools/settlement-history-check/call",
      "description": "code402 settlement-history-check (standard floor — 1.0x reserve floor)",
      "maxAmountRequired": "20000",
      "maxTimeoutSeconds": 300
    },
    {
      "asset": "0x60a3E35Cc302bFA44Cb288Bc5a4F316Fdb1adb42",
      "extra": {
        "name": "EURC",
        "tier": "economy",
        "version": "1",
        "currency": "EURC",
        "multiplier": 1,
        "asset_caip19": "eip155:8453/erc20:0x60a3E35Cc302bFA44Cb288Bc5a4F316Fdb1adb42",
        "payTo_caip10": "eip155:8453:0xc59c85e661d34084a7769f955d17fd38254a6235"
      },
      "payTo": "0xc59c85e661d34084a7769f955d17fd38254a6235",
      "amount": "20000",
      "scheme": "exact",
      "network": "eip155:8453",
      "mimeType": "application/json",
      "resource": "https://hcrb.in/v1/tools/settlement-history-check/call",
      "description": "code402 settlement-history-check (EURC — standard floor)",
      "maxAmountRequired": "20000",
      "maxTimeoutSeconds": 300
    },
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "tier": "supporter",
        "version": "2",
        "currency": "USDC",
        "multiplier": 2,
        "asset_caip19": "eip155:8453/erc20:0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "payTo_caip10": "eip155:8453:0xc59c85e661d34084a7769f955d17fd38254a6235"
      },
      "payTo": "0xc59c85e661d34084a7769f955d17fd38254a6235",
      "amount": "40000",
      "scheme": "exact",
      "network": "eip155:8453",
      "mimeType": "application/json",
      "resource": "https://hcrb.in/v1/tools/settlement-history-check/call",
      "description": "code402 settlement-history-check (supporter floor, identical result and delivery — 2.0x reserve floor)",
      "maxAmountRequired": "40000",
      "maxTimeoutSeconds": 300
    },
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "tier": "patron",
        "version": "2",
        "currency": "USDC",
        "multiplier": 5,
        "asset_caip19": "eip155:8453/erc20:0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "payTo_caip10": "eip155:8453:0xc59c85e661d34084a7769f955d17fd38254a6235"
      },
      "payTo": "0xc59c85e661d34084a7769f955d17fd38254a6235",
      "amount": "100000",
      "scheme": "exact",
      "network": "eip155:8453",
      "mimeType": "application/json",
      "resource": "https://hcrb.in/v1/tools/settlement-history-check/call",
      "description": "code402 settlement-history-check (patron floor, identical result and delivery — 5.0x reserve floor)",
      "maxAmountRequired": "100000",
      "maxTimeoutSeconds": 300
    }
  ],
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "body": {
            "input": {
              "address": "0xc59c85e661d34084a7769f955d17fd38254a6235"
            }
          },
          "type": "http",
          "method": "POST",
          "bodyType": "json"
        },
        "output": {
          "type": "json",
          "example": {
            "valid": true,
            "address": "0x0000000000000000000000000000000000000000",
            "usdc_sent": {
              "count": 0,
              "volume_usdc": 0
            },
            "usdc_received": {
              "count": 1,
              "volume_usdc": 1
            }
          }
        }
      },
      "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": {
                "type": "object",
                "required": [
                  "input"
                ],
                "properties": {
                  "input": {
                    "type": "object",
                    "required": [
                      "address"
                    ],
                    "properties": {
                      "address": {
                        "type": "string",
                        "description": "EVM address, 0x-prefixed."
                      }
                    }
                  }
                },
                "additionalProperties": false
              },
              "type": {
                "type": "string",
                "const": "http"
              },
              "method": {
                "enum": [
                  "POST",
                  "PUT",
                  "PATCH"
                ],
                "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": [
                  "valid",
                  "address"
                ],
                "properties": {
                  "tool": {
                    "type": "string"
                  },
                  "scope": {
                    "type": "string"
                  },
                  "valid": {
                    "type": "boolean"
                  },
                  "address": {
                    "type": "string"
                  },
                  "usdc_sent": {
                    "type": "object"
                  },
                  "usdc_received": {
                    "type": "object"
                  }
                }
              }
            }
          }
        }
      }
    }
  },
  "price_note": "neutral-clearinghouse: flat at-cost commodity transit ($0.005 USDC); each accepted voucher settles as its own transfer; live quote via GET /health",
  "description": "ON-CHAIN COUNTERPARTY PROOF: Audit USDC transfers sent and received by any EVM address over the last ~48h of Base blocks. Preflighted so you never pay during an RPC outage.",
  "x402Version": 2,
  "input_schema": {
    "type": "object",
    "required": [
      "address"
    ],
    "properties": {
      "address": {
        "type": "string",
        "description": "EVM address, 0x-prefixed."
      }
    }
  },
  "output_schema": {
    "type": "object",
    "required": [
      "valid",
      "address"
    ],
    "properties": {
      "tool": {
        "type": "string"
      },
      "scope": {
        "type": "string"
      },
      "valid": {
        "type": "boolean"
      },
      "address": {
        "type": "string"
      },
      "usdc_sent": {
        "type": "object"
      },
      "usdc_received": {
        "type": "object"
      }
    }
  },
  "example_request": {
    "input": {
      "address": "0xc59c85e661d34084a7769f955d17fd38254a6235"
    }
  },
  "price_usdc_floor": 0.02
}

Accepts

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

0.02USDC≈ $0.02 USD
on Base · exact scheme

Pay 0.02 USDC on Base to 0xc59c…a6235. The signed payment is good for 15 minutes.

Paid to
0xc59c…a6235
USD Coin contract
0x8335…02913
Payment window
15 minutes
As published
20000 smallest units
Buys
code402 settlement-history-check (standard floor — 1.0x reserve floor)
Returns
application/json
20000units
on Base · 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
0xc59c…a6235
Token contract
0x60a3…adb42
Payment window
15 minutes
Buys
code402 settlement-history-check (EURC — standard floor)
Returns
application/json
The catalog’s raw entry
[
  {
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "extra": {
      "name": "USD Coin",
      "tier": "economy",
      "version": "2",
      "currency": "USDC",
      "multiplier": 1,
      "asset_caip19": "eip155:8453/erc20:0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "payTo_caip10": "eip155:8453:0xc59c85e661d34084a7769f955d17fd38254a6235"
    },
    "payTo": "0xc59c85e661d34084a7769f955d17fd38254a6235",
    "amount": "20000",
    "scheme": "exact",
    "network": "eip155:8453",
    "mimeType": "application/json",
    "resource": "https://hcrb.in/v1/tools/settlement-history-check/call",
    "description": "code402 settlement-history-check (standard floor — 1.0x reserve floor)",
    "maxTimeoutSeconds": 900
  },
  {
    "asset": "0x60a3E35Cc302bFA44Cb288Bc5a4F316Fdb1adb42",
    "extra": {
      "name": "EURC",
      "tier": "economy",
      "version": "2",
      "currency": "EURC",
      "multiplier": 1,
      "asset_caip19": "eip155:8453/erc20:0x60a3E35Cc302bFA44Cb288Bc5a4F316Fdb1adb42",
      "payTo_caip10": "eip155:8453:0xc59c85e661d34084a7769f955d17fd38254a6235"
    },
    "payTo": "0xc59c85e661d34084a7769f955d17fd38254a6235",
    "amount": "20000",
    "scheme": "exact",
    "network": "eip155:8453",
    "mimeType": "application/json",
    "resource": "https://hcrb.in/v1/tools/settlement-history-check/call",
    "description": "code402 settlement-history-check (EURC — standard floor)",
    "maxTimeoutSeconds": 900
  }
]

Extensions

{
  "bazaar": {
    "info": {
      "input": {
        "body": {
          "input": {
            "address": "0xc59c85e661d34084a7769f955d17fd38254a6235"
          }
        },
        "type": "http",
        "method": "POST",
        "bodyType": "json"
      },
      "output": {
        "type": "json",
        "example": {
          "valid": true,
          "address": "0x0000000000000000000000000000000000000000",
          "usdc_sent": {
            "count": 0,
            "volume_usdc": 0
          },
          "usdc_received": {
            "count": 1,
            "volume_usdc": 1
          }
        }
      }
    },
    "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": {
              "type": "object",
              "required": [
                "input"
              ],
              "properties": {
                "input": {
                  "type": "object",
                  "required": [
                    "address"
                  ],
                  "properties": {
                    "address": {
                      "type": "string",
                      "description": "EVM address, 0x-prefixed."
                    }
                  }
                }
              },
              "additionalProperties": false
            },
            "type": {
              "type": "string",
              "const": "http"
            },
            "method": {
              "enum": [
                "POST",
                "PUT",
                "PATCH"
              ],
              "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": [
                "valid",
                "address"
              ],
              "properties": {
                "tool": {
                  "type": "string"
                },
                "scope": {
                  "type": "string"
                },
                "valid": {
                  "type": "boolean"
                },
                "address": {
                  "type": "string"
                },
                "usdc_sent": {
                  "type": "object"
                },
                "usdc_received": {
                  "type": "object"
                }
              }
            }
          }
        }
      }
    }
  }
}

Provenance

Seen in the source catalog
2026-10-20 20:28Z
Last indexed by Roundhouse
2026-10-26 15:10Z
Last enriched (probe, favicon, geo)
2026-10-03 12:45Z
x402 version
2
Max timeout
900s
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. 32 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 hcrb.in 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=hcrb.in'
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://hcrb.in/v1/tools/settlement-history-check/call, 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.