agentshelf.syntexa.ch

Call when an agent needs raw Base logs for one contract, with optional topic0-topic3, a capped block range, and an optional event signature for decoding. Public mainnet.base.org windows stay small and HTTP 429 is not billed. Read-only. Send JSON fields address (string), topic0 (string), event (string). Exact $0.005 USDC on Base. Try unpaid POST /v1/sandbox/base-events first.

SearchLiveeip155:8453Exactvia cdp
Calls · 30d
1
This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 6 snapshots so far.
$6.82
Verified settled volume
1,320 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 2026-10-22 09:31Z
—
Upstream on-chain volume
Reported by the source catalog.
Paid to
0x1D61FAA032d3f40D9C470D2bf3A3f53De0E55a38

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": "X-PAYMENT header is required",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "version": "2"
      },
      "payTo": "0x1D61FAA032d3f40D9C470D2bf3A3f53De0E55a38",
      "scheme": "exact",
      "network": "base",
      "mimeType": "application/json",
      "resource": "https://agentshelf.syntexa.ch/v1/base-events",
      "description": "Call when an agent needs raw Base logs for one contract, with optional topic0-topic3, a capped block range, and an optional event signature for decoding. Public mainnet.base.org windows stay small. Alchemy free-tier spans stay within 10 blocks. HTTP 429 is not billed. Read-only. Send JSON fields address (string), topic0 (string), event (string). Exact $0.005 USDC on Base. Try unpaid POST /v1/sandbox/base-events first.",
      "outputSchema": {
        "info": {
          "input": {
            "body": {
              "event": "Transfer(address indexed from, address indexed to, uint256 value)",
              "topic0": "0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef",
              "address": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913"
            },
            "type": "http",
            "method": "POST",
            "bodyType": "json"
          },
          "output": {
            "type": "json",
            "example": {
              "ok": true,
              "logs": [
                {
                  "data": "0x00000000000000000000000000000000000000000000000000000000000f4240",
                  "topics": [
                    "0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef",
                    "0x000000000000000000000000d8da6bf26964af9d7eed9e03e53415d37aa96045",
                    "0x000000000000000000000000833589fcd6edb6e08f4c7c32d4f71b54bda02913"
                  ],
                  "address": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
                  "decoded": {
                    "args": [
                      {
                        "name": "from",
                        "type": "address",
                        "value": "0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045",
                        "indexed": true
                      },
                      {
                        "name": "to",
                        "type": "address",
                        "value": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
                        "indexed": true
                      },
                      {
                        "name": "value",
                        "type": "uint256",
                        "value": "1000000",
                        "indexed": false
                      }
                    ],
                    "event": "Transfer"
                  },
                  "log_index": 12,
                  "block_number": 26246401,
                  "transaction_hash": "0x5c504ed432cb51138bcf09aa5e8a410dd4a1e204ef84bfed1be16dfba1b22060"
                }
              ],
              "billed": true,
              "address": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
              "network": "eip155:8453",
              "to_block": 26246401,
              "warnings": [],
              "truncated": false,
              "from_block": 26246376,
              "receipt_id": "rcpt_01EXAMPLE000000000000000"
            }
          }
        },
        "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",
                  "examples": [
                    {
                      "event": "Transfer(address indexed from, address indexed to, uint256 value)",
                      "topic0": "0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef",
                      "address": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913"
                    }
                  ],
                  "required": [
                    "address"
                  ],
                  "properties": {
                    "event": {
                      "type": "string",
                      "pattern": "^[A-Za-z_][A-Za-z0-9_]*\\([A-Za-z0-9_,\\s]*\\)$",
                      "examples": [
                        "Transfer(address indexed from, address indexed to, uint256 value)"
                      ],
                      "maxLength": 300,
                      "description": "Optional Solidity event signature. Example: Transfer(address indexed from, address indexed to, uint256 value). topic0 defaults to its keccak. Arrays are not decoded."
                    },
                    "topic0": {
                      "type": "string",
                      "pattern": "^0x[0-9a-fA-F]{64}$",
                      "examples": [
                        "0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef"
                      ],
                      "description": "First log topic, 32 bytes of hex. Example: 0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef is ERC-20 Transfer. Omit it for a wildcard in that position."
                    },
                    "topic1": {
                      "type": "string",
                      "pattern": "^0x[0-9a-fA-F]{64}$",
                      "description": "Second log topic, 32 bytes of hex. Example: 0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef is ERC-20 Transfer. Omit it for a wildcard in that position."
                    },
                    "topic2": {
                      "type": "string",
                      "pattern": "^0x[0-9a-fA-F]{64}$",
                      "description": "Third log topic, 32 bytes of hex. Example: 0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef is ERC-20 Transfer. Omit it for a wildcard in that position."
                    },
                    "topic3": {
                      "type": "string",
                      "pattern": "^0x[0-9a-fA-F]{64}$",
                      "description": "Fourth log topic, 32 bytes of hex. Example: 0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef is ERC-20 Transfer. Omit it for a wildcard in that position."
                    },
                    "address": {
                      "type": "string",
                      "examples": [
                        "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913"
                      ],
                      "description": "Contract on Base mainnet. Example: 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 (Circle USDC). Logs are filtered to this address. EIP-55 or all one case."
                    },
                    "to_block": {
                      "type": "string",
                      "description": "Last block, inclusive, or latest. On public Base the span is at most 16 blocks. With a configured BASE_RPC_URL, or on Ethereum, the span is at most 2000. Omit it to anchor the default window."
                    },
                    "from_block": {
                      "type": "string",
                      "pattern": "^(0|[1-9]\\d*)$",
                      "description": "First block, inclusive. On public Base the span is at most 16 blocks. With a configured BASE_RPC_URL, or on Ethereum, the span is at most 2000. Omit both bounds for the default recent window."
                    }
                  },
                  "additionalProperties": false
                },
                "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",
                  "examples": [
                    {
                      "ok": true,
                      "logs": [
                        {
                          "data": "0x00000000000000000000000000000000000000000000000000000000000f4240",
                          "topics": [
                            "0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef",
                            "0x000000000000000000000000d8da6bf26964af9d7eed9e03e53415d37aa96045",
                            "0x000000000000000000000000833589fcd6edb6e08f4c7c32d4f71b54bda02913"
                          ],
                          "address": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
                          "decoded": {
                            "args": [
                              {
                                "name": "from",
                                "type": "address",
                                "value": "0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045",
                                "indexed": true
                              },
                              {
                                "name": "to",
                                "type": "address",
                                "value": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
                                "indexed": true
                              },
                              {
                                "name": "value",
                                "type": "uint256",
                                "value": "1000000",
                                "indexed": false
                              }
                            ],
                            "event": "Transfer"
                          },
                          "log_index": 12,
                          "block_number": 26246401,
                          "transaction_hash": "0x5c504ed432cb51138bcf09aa5e8a410dd4a1e204ef84bfed1be16dfba1b22060"
                        }
                      ],
                      "billed": true,
                      "address": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
                      "network": "eip155:8453",
                      "to_block": 26246401,
                      "warnings": [],
                      "truncated": false,
                      "from_block": 26246376,
                      "receipt_id": "rcpt_01EXAMPLE000000000000000"
                    }
                  ],
                  "required": [
                    "ok",
                    "receipt_id",
                    "billed",
                    "network",
                    "address",
                    "from_block",
                    "to_block",
                    "truncated",
                    "logs"
                  ],
                  "properties": {
                    "ok": {
                      "type": "boolean",
                      "const": true,
                      "examples": [
                        true
                      ]
                    },
                    "logs": {
                      "type": "array",
                      "items": {
                        "type": "object",
                        "required": [
                          "address",
                          "topics",
                          "data",
                          "block_number",
                          "transaction_hash",
                          "log_index",
                          "decoded"
                        ],
                        "properties": {
                          "data": {
                            "type": "string"
                          },
                          "topics": {
                            "type": "array",
                            "items": {
                              "type": "string"
                            },
                            "maxItems": 4
                          },
                          "address": {
                            "type": "string"
                          },
                          "decoded": {
                            "anyOf": [
                              {
                                "type": "object",
                                "required": [
                                  "event",
                                  "args"
                                ],
                                "properties": {
                                  "args": {
                                    "type": "array",
                                    "items": {
                                      "type": "object",
                                      "required": [
                                        "name",
                                        "type",
                                        "indexed",
                                        "value"
                                      ],
                                      "properties": {
                                        "name": {
                                          "type": "string"
                                        },
                                        "type": {
                                          "enum": [
                                            "address",
                                            "uint256",
                                            "int256",
                                            "bool",
                                            "bytes32",
                                            "bytes4",
                                            "string",
                                            "bytes"
                                          ],
                                          "type": "string"
                                        },
                                        "value": {
                                          "type": "string"
                                        },
                                        "indexed": {
                                          "type": "boolean"
                                        }
                                      },
                                      "additionalProperties": false
                                    },
                                    "maxItems": 16
                                  },
                                  "event": {
                                    "type": "string"
                                  }
                                },
                                "additionalProperties": false
                              },
                              {
                                "type": "null"
                              }
                            ]
                          },
                          "log_index": {
                            "type": "integer",
                            "minimum": 0
                          },
                          "block_number": {
                            "type": "integer",
                            "minimum": 0
                          },
                          "transaction_hash": {
                            "type": "string"
                          }
                        },
                        "additionalProperties": false
                      },
                      "examples": [
                        [
                          {
                            "data": "0x00000000000000000000000000000000000000000000000000000000000f4240",
                            "topics": [
                              "0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef",
                              "0x000000000000000000000000d8da6bf26964af9d7eed9e03e53415d37aa96045",
                              "0x000000000000000000000000833589fcd6edb6e08f4c7c32d4f71b54bda02913"
                            ],
                            "address": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
                            "decoded": {
                              "args": [
                                {
                                  "name": "from",
                                  "type": "address",
                                  "value": "0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045",
                                  "indexed": true
                                },
                                {
                                  "name": "to",
                                  "type": "address",
                                  "value": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
                                  "indexed": true
                                },
                                {
                                  "name": "value",
                                  "type": "uint256",
                                  "value": "1000000",
                                  "indexed": false
                                }
                              ],
                              "event": "Transfer"
                            },
                            "log_index": 12,
                            "block_number": 26246401,
                            "transaction_hash": "0x5c504ed432cb51138bcf09aa5e8a410dd4a1e204ef84bfed1be16dfba1b22060"
                          }
                        ]
                      ],
                      "maxItems": 50
                    },
                    "billed": {
                      "type": "boolean",
                      "examples": [
                        true
                      ]
                    },
                    "address": {
                      "type": "string",
                      "examples": [
                        "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913"
                      ]
                    },
                    "network": {
                      "type": "string",
                      "const": "eip155:8453",
                      "examples": [
                        "eip155:8453"
                      ]
                    },
                    "to_block": {
                      "type": "integer",
                      "minimum": 0,
                      "examples": [
                        26246401
                      ]
                    },
                    "warnings": {
                      "type": "array",
                      "items": {
                        "type": "string"
                      },
                      "default": [],
                      "examples": [
                        []
                      ]
                    },
                    "truncated": {
                      "type": "boolean",
                      "examples": [
                        false
                      ]
                    },
                    "from_block": {
                      "type": "integer",
                      "minimum": 0,
                      "examples": [
                        26246376
                      ]
                    },
                    "receipt_id": {
                      "type": "string",
                      "examples": [
                        "rcpt_01EXAMPLE000000000000000"
                      ]
                    }
                  },
                  "additionalProperties": false
                }
              }
            }
          }
        }
      },
      "maxAmountRequired": "5000",
      "maxTimeoutSeconds": 60
    }
  ],
  "x402Version": 1
}

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 0x1D61…55a38. The signed payment is good for 1 minute.

USD Coin contract
0x8335…02913
Payment window
1 minute
As published
5000 smallest units
The catalog’s raw entry
[
  {
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "extra": {
      "name": "USD Coin",
      "version": "2"
    },
    "payTo": "0x1D61FAA032d3f40D9C470D2bf3A3f53De0E55a38",
    "amount": "5000",
    "scheme": "exact",
    "network": "eip155:8453",
    "maxTimeoutSeconds": 60
  }
]

Extensions

{
  "bazaar": {
    "info": {
      "input": {
        "body": {
          "event": "Transfer(address indexed from, address indexed to, uint256 value)",
          "topic0": "0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef",
          "address": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913"
        },
        "type": "http",
        "method": "POST",
        "bodyType": "json"
      },
      "output": {
        "type": "json",
        "example": {
          "ok": true,
          "logs": [
            {
              "data": "0x00000000000000000000000000000000000000000000000000000000000f4240",
              "topics": [
                "0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef",
                "0x000000000000000000000000d8da6bf26964af9d7eed9e03e53415d37aa96045",
                "0x000000000000000000000000833589fcd6edb6e08f4c7c32d4f71b54bda02913"
              ],
              "address": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
              "decoded": {
                "args": [
                  {
                    "name": "from",
                    "type": "address",
                    "value": "0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045",
                    "indexed": true
                  },
                  {
                    "name": "to",
                    "type": "address",
                    "value": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
                    "indexed": true
                  },
                  {
                    "name": "value",
                    "type": "uint256",
                    "value": "1000000",
                    "indexed": false
                  }
                ],
                "event": "Transfer"
              },
              "log_index": 12,
              "block_number": 26246401,
              "transaction_hash": "0x5c504ed432cb51138bcf09aa5e8a410dd4a1e204ef84bfed1be16dfba1b22060"
            }
          ],
          "billed": true,
          "address": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
          "network": "eip155:8453",
          "to_block": 26246401,
          "warnings": [],
          "truncated": false,
          "from_block": 26246376,
          "receipt_id": "rcpt_01EXAMPLE000000000000000"
        }
      }
    },
    "schema": {
      "type": "object",
      "$schema": "https://json-schema.org/draft/2020-12/schema",
      "required": [
        "input"
      ],
      "properties": {
        "input": {
          "type": "object",
          "required": [
            "type",
            "method",
            "bodyType",
            "body"
          ],
          "properties": {
            "body": {
              "type": "object",
              "examples": [
                {
                  "event": "Transfer(address indexed from, address indexed to, uint256 value)",
                  "topic0": "0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef",
                  "address": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913"
                }
              ],
              "required": [
                "address"
              ],
              "properties": {
                "event": {
                  "type": "string",
                  "pattern": "^[A-Za-z_][A-Za-z0-9_]*\\([A-Za-z0-9_,\\s]*\\)$",
                  "examples": [
                    "Transfer(address indexed from, address indexed to, uint256 value)"
                  ],
                  "maxLength": 300,
                  "description": "Optional Solidity event signature. Example: Transfer(address indexed from, address indexed to, uint256 value). topic0 defaults to its keccak. Arrays are not decoded."
                },
                "topic0": {
                  "type": "string",
                  "pattern": "^0x[0-9a-fA-F]{64}$",
                  "examples": [
                    "0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef"
                  ],
                  "description": "First log topic, 32 bytes of hex. Example: 0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef is ERC-20 Transfer. Omit it for a wildcard in that position."
                },
                "topic1": {
                  "type": "string",
                  "pattern": "^0x[0-9a-fA-F]{64}$",
                  "description": "Second log topic, 32 bytes of hex. Example: 0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef is ERC-20 Transfer. Omit it for a wildcard in that position."
                },
                "topic2": {
                  "type": "string",
                  "pattern": "^0x[0-9a-fA-F]{64}$",
                  "description": "Third log topic, 32 bytes of hex. Example: 0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef is ERC-20 Transfer. Omit it for a wildcard in that position."
                },
                "topic3": {
                  "type": "string",
                  "pattern": "^0x[0-9a-fA-F]{64}$",
                  "description": "Fourth log topic, 32 bytes of hex. Example: 0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef is ERC-20 Transfer. Omit it for a wildcard in that position."
                },
                "address": {
                  "type": "string",
                  "examples": [
                    "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913"
                  ],
                  "description": "Contract on Base mainnet. Example: 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 (Circle USDC). Logs are filtered to this address. EIP-55 or all one case."
                },
                "to_block": {
                  "type": "string",
                  "description": "Last block, inclusive, or latest. On public Base the span is at most 16 blocks. With a configured BASE_RPC_URL, or on Ethereum, the span is at most 2000. Omit it to anchor the default window."
                },
                "from_block": {
                  "type": "string",
                  "pattern": "^(0|[1-9]\\d*)$",
                  "description": "First block, inclusive. On public Base the span is at most 16 blocks. With a configured BASE_RPC_URL, or on Ethereum, the span is at most 2000. Omit both bounds for the default recent window."
                }
              },
              "additionalProperties": false
            },
            "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",
              "examples": [
                {
                  "ok": true,
                  "logs": [
                    {
                      "data": "0x00000000000000000000000000000000000000000000000000000000000f4240",
                      "topics": [
                        "0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef",
                        "0x000000000000000000000000d8da6bf26964af9d7eed9e03e53415d37aa96045",
                        "0x000000000000000000000000833589fcd6edb6e08f4c7c32d4f71b54bda02913"
                      ],
                      "address": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
                      "decoded": {
                        "args": [
                          {
                            "name": "from",
                            "type": "address",
                            "value": "0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045",
                            "indexed": true
                          },
                          {
                            "name": "to",
                            "type": "address",
                            "value": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
                            "indexed": true
                          },
                          {
                            "name": "value",
                            "type": "uint256",
                            "value": "1000000",
                            "indexed": false
                          }
                        ],
                        "event": "Transfer"
                      },
                      "log_index": 12,
                      "block_number": 26246401,
                      "transaction_hash": "0x5c504ed432cb51138bcf09aa5e8a410dd4a1e204ef84bfed1be16dfba1b22060"
                    }
                  ],
                  "billed": true,
                  "address": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
                  "network": "eip155:8453",
                  "to_block": 26246401,
                  "warnings": [],
                  "truncated": false,
                  "from_block": 26246376,
                  "receipt_id": "rcpt_01EXAMPLE000000000000000"
                }
              ],
              "required": [
                "ok",
                "receipt_id",
                "billed",
                "network",
                "address",
                "from_block",
                "to_block",
                "truncated",
                "logs"
              ],
              "properties": {
                "ok": {
                  "type": "boolean",
                  "const": true,
                  "examples": [
                    true
                  ]
                },
                "logs": {
                  "type": "array",
                  "items": {
                    "type": "object",
                    "required": [
                      "address",
                      "topics",
                      "data",
                      "block_number",
                      "transaction_hash",
                      "log_index",
                      "decoded"
                    ],
                    "properties": {
                      "data": {
                        "type": "string"
                      },
                      "topics": {
                        "type": "array",
                        "items": {
                          "type": "string"
                        },
                        "maxItems": 4
                      },
                      "address": {
                        "type": "string"
                      },
                      "decoded": {
                        "anyOf": [
                          {
                            "type": "object",
                            "required": [
                              "event",
                              "args"
                            ],
                            "properties": {
                              "args": {
                                "type": "array",
                                "items": {
                                  "type": "object",
                                  "required": [
                                    "name",
                                    "type",
                                    "indexed",
                                    "value"
                                  ],
                                  "properties": {
                                    "name": {
                                      "type": "string"
                                    },
                                    "type": {
                                      "enum": [
                                        "address",
                                        "uint256",
                                        "int256",
                                        "bool",
                                        "bytes32",
                                        "bytes4",
                                        "string",
                                        "bytes"
                                      ],
                                      "type": "string"
                                    },
                                    "value": {
                                      "type": "string"
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                                    "indexed": {
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                                    }
                                  },
                                  "additionalProperties": false
                                },
                                "maxItems": 16
                              },
                              "event": {
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                            },
                            "additionalProperties": false
                          },
                          {
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                        "type": "integer",
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                        "type": "string"
                      }
                    },
                    "additionalProperties": false
                  },
                  "examples": [
                    [
                      {
                        "data": "0x00000000000000000000000000000000000000000000000000000000000f4240",
                        "topics": [
                          "0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef",
                          "0x000000000000000000000000d8da6bf26964af9d7eed9e03e53415d37aa96045",
                          "0x000000000000000000000000833589fcd6edb6e08f4c7c32d4f71b54bda02913"
                        ],
                        "address": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
                        "decoded": {
                          "args": [
                            {
                              "name": "from",
                              "type": "address",
                              "value": "0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045",
                              "indexed": true
                            },
                            {
                              "name": "to",
                              "type": "address",
                              "value": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
                              "indexed": true
                            },
                            {
                              "name": "value",
                              "type": "uint256",
                              "value": "1000000",
                              "indexed": false
                            }
                          ],
                          "event": "Transfer"
                        },
                        "log_index": 12,
                        "block_number": 26246401,
                        "transaction_hash": "0x5c504ed432cb51138bcf09aa5e8a410dd4a1e204ef84bfed1be16dfba1b22060"
                      }
                    ]
                  ],
                  "maxItems": 50
                },
                "billed": {
                  "type": "boolean",
                  "examples": [
                    true
                  ]
                },
                "address": {
                  "type": "string",
                  "examples": [
                    "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913"
                  ]
                },
                "network": {
                  "type": "string",
                  "const": "eip155:8453",
                  "examples": [
                    "eip155:8453"
                  ]
                },
                "to_block": {
                  "type": "integer",
                  "minimum": 0,
                  "examples": [
                    26246401
                  ]
                },
                "warnings": {
                  "type": "array",
                  "items": {
                    "type": "string"
                  },
                  "default": [],
                  "examples": [
                    []
                  ]
                },
                "truncated": {
                  "type": "boolean",
                  "examples": [
                    false
                  ]
                },
                "from_block": {
                  "type": "integer",
                  "minimum": 0,
                  "examples": [
                    26246376
                  ]
                },
                "receipt_id": {
                  "type": "string",
                  "examples": [
                    "rcpt_01EXAMPLE000000000000000"
                  ]
                }
              },
              "additionalProperties": false
            }
          }
        }
      }
    }
  }
}

Provenance

Seen in the source catalog
2026-10-22 09:31Z
Last indexed by Roundhouse
2026-10-26 19:30Z
Last enriched (probe, favicon, geo)
2026-10-22 10:16Z
x402 version
2
Max timeout
60s
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. 6 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 agentshelf.syntexa.ch 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=agentshelf.syntexa.ch'
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://agentshelf.syntexa.ch/v1/base-events, 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.