OneSource

payment-readyonlineimported

payment-ready until 2026-10-26

imported from the x402 Bazaar, not submitted by the operator · own this service? claim it · or ask to be removed

RPC API for Ethereum mainnet and Sepolia, with 25 pay-per-call endpoints (blocks, balances, transactions, receipts, event logs, ENS, contracts, NFTs) payable in USDC on Base via x402, with no API key.

api.onesource.io ↗

Call it x402 v2

x402 v2

Base URL: https://api.onesource.io
Payment: x402 v2, header channel

$ curl -i 'https://api.onesource.io/api/chain/block-number'

An unpaid request returns HTTP 402 with the payment terms. Sign a payment authorization, then retry with the PAYMENT-SIGNATURE header.

Endpoints 10 paid routes on api.onesource.io

GET/api/chain/block-numberBase$0.001since 07-20

POST/api/chain/callBase$0.005since 07-20

GET/api/chain/code/:addressBase$0.003since 07-20

GET/api/chain/contract/:addressBase$0.005since 07-20

GET/api/chain/ens/:inputBase$0.005since 07-20

GET/api/chain/erc20-transfersBase$0.005since 07-20

POST/api/chain/estimate-gasBase$0.004since 07-20

GET/api/chain/network-infoBase$0.001since 07-20

2 more in Example 402 response

Prices as captured in the 402 response: median $0.0045 across the 10 endpoints.

Example 402 response

Endpoints and prices

Current paid endpoints; minimum quoted prices in USD where available; first capture dates in UTC
Method	Path	Description	Price	Network	Asset	402 channel	Captured
GET	/api/chain/block-number	Latest Ethereum block height - current chain tip via eth_blockNumber	$0.001	Base	USDC	header	since 07-20
POST	/api/chain/call	Simulate a read-only Ethereum contract call via eth_call - no transaction sent	$0.005	Base	USDC	header	since 07-20
GET	/api/chain/code/:address	Check if an Ethereum address is a contract via eth_getCode - returns deployed bytecode	$0.003	Base	USDC	header	since 07-20
GET	/api/chain/contract/:address	Best-effort contract introspection via batched RPC - bytecode presence, token metadata, and ERC20-like/ERC721/ERC1155 classification	$0.005	Base	USDC	header	since 07-20
GET	/api/chain/ens/:input	ENS resolve - turn a .eth name into an address, or an address into its primary .eth name, via eth_call on OneSource live Ethereum RPC	$0.005	Base	USDC	header	since 07-20
GET	/api/chain/erc20-transfers	ERC20 Transfer logs via eth_getLogs - raw Transfer events for a token or wallet	$0.005	Base	USDC	header	since 07-20
POST	/api/chain/estimate-gas	Estimate the gas a transaction will consume via eth_estimateGas before signing it	$0.004	Base	USDC	header	since 07-20
GET	/api/chain/network-info	EVM network info - chain ID, block height, gas price, chain head age, and chain characteristics in one batched RPC call (eth_chainId + eth_blockNumber + eth_gasPrice + latest block header)	$0.001	Base	USDC	header	since 07-20
GET	/api/chain/nonce/:address	Next transaction nonce for any Ethereum wallet via eth_getTransactionCount - how many txs it has sent	$0.003	Base	USDC	header	since 07-20
GET	/api/chain/receipt/:hash	Transaction receipt via eth_getTransactionReceipt - status, gas, and event logs for a mined Ethereum transaction	$0.005	Base	USDC	header	since 07-20

Payment evidence

402 payload captured at 2026-07-20 16:54:01 UTC. Check evidence JSON · Measurement methodology.

{
  "error": "Payment required",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "version": "2",
        "credentialTypes": [
          "authorization"
        ]
      },
      "payTo": "0x52E29e0d2Aa49bfBfC548C0A9F2196F4aa51f3ea",
      "amount": "1000",
      "scheme": "exact",
      "network": "eip155:8453",
      "currency": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "recipient": "0x52E29e0d2Aa49bfBfC548C0A9F2196F4aa51f3ea",
      "maxTimeoutSeconds": 3600
    },
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "version": "2",
        "withdrawDelay": 86400,
        "receiverAuthorizer": "0x11dF9F6280632aB8F12926b3f569E493EaEcf81b"
      },
      "payTo": "0x52E29e0d2Aa49bfBfC548C0A9F2196F4aa51f3ea",
      "amount": "1000",
      "scheme": "batch-settlement",
      "network": "eip155:8453",
      "currency": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "recipient": "0x52E29e0d2Aa49bfBfC548C0A9F2196F4aa51f3ea",
      "maxTimeoutSeconds": 3600
    }
  ],
  "resource": {
    "url": "https://api.onesource.io/api/chain/block-number",
    "mimeType": "application/json",
    "description": "Latest Ethereum block height - current chain tip via eth_blockNumber"
  },
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "body": {
            "network": "ethereum"
          },
          "type": "http",
          "method": "GET",
          "queryParams": {
            "network": "ethereum"
          }
        },
        "output": {
          "type": "json",
          "example": {
            "network": "ethereum",
            "block_number": "0x133da1e"
          }
        }
      },
      "schema": {
        "type": "object",
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "required": [
          "input"
        ],
        "properties": {
          "input": {
            "type": "object",
            "required": [
              "type",
              "method"
            ],
            "properties": {
              "body": {
                "type": "object",
                "properties": {
                  "network": {
                    "enum": [
                      "ethereum",
                      "sepolia"
                    ],
                    "type": "string",
                    "default": "ethereum"
                  }
                }
              },
              "type": {
                "type": "string",
                "const": "http"
              },
              "method": {
                "enum": [
                  "GET",
                  "HEAD",
                  "DELETE"
                ],
                "type": "string"
              },
              "queryParams": {
                "type": "object",
                "properties": {
                  "network": {
                    "enum": [
                      "ethereum",
                      "sepolia"
                    ],
                    "type": "string",
                    "default": "ethereum"
                  }
                }
              }
            },
            "additionalProperties": false
          },
          "output": {
            "type": "object",
            "required": [
              "type"
            ],
            "properties": {
              "type": {
                "type": "string"
              },
              "example": {
                "type": "object",
                "properties": {
                  "data": {
                    "type": "object",
                    "description": "Response payload"
                  },
                  "meta": {
                    "type": "object",
                    "properties": {
                      "network": {
                        "type": "string"
                      },
                      "endpoint": {
                        "type": "string"
                      },
                      "cost_usdc": {
                        "type": "string"
                      }
                    }
                  },
                  "error": {
                    "type": [
                      "object",
                      "null"
                    ]
                  }
                }
              }
            }
          }
        }
      }
    }
  },
  "x402Version": 2
}

Other captured 402 responses (9)

Captured payload 2 of 10

{
  "error": "Payment required",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "version": "2",
        "credentialTypes": [
          "authorization"
        ]
      },
      "payTo": "0x52E29e0d2Aa49bfBfC548C0A9F2196F4aa51f3ea",
      "amount": "3000",
      "scheme": "exact",
      "network": "eip155:8453",
      "currency": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "recipient": "0x52E29e0d2Aa49bfBfC548C0A9F2196F4aa51f3ea",
      "maxTimeoutSeconds": 3600
    },
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "version": "2",
        "withdrawDelay": 86400,
        "receiverAuthorizer": "0x11dF9F6280632aB8F12926b3f569E493EaEcf81b"
      },
      "payTo": "0x52E29e0d2Aa49bfBfC548C0A9F2196F4aa51f3ea",
      "amount": "3000",
      "scheme": "batch-settlement",
      "network": "eip155:8453",
      "currency": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "recipient": "0x52E29e0d2Aa49bfBfC548C0A9F2196F4aa51f3ea",
      "maxTimeoutSeconds": 3600
    }
  ],
  "resource": {
    "url": "https://api.onesource.io/api/chain/code/:address",
    "mimeType": "application/json",
    "description": "Check if an Ethereum address is a contract via eth_getCode - returns deployed bytecode"
  },
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "body": {
            "address": "0xdac17f958d2ee523a2206206994597c13d831ec7",
            "network": "ethereum"
          },
          "type": "http",
          "method": "GET",
          "queryParams": {
            "address": "0xdac17f958d2ee523a2206206994597c13d831ec7",
            "network": "ethereum"
          }
        },
        "output": {
          "type": "json",
          "example": {
            "code": "0x6080604052600436106101...",
            "address": "0xdac17f958d2ee523a2206206994597c13d831ec7",
            "is_contract": true,
            "bytecode_size": 10234
          }
        }
      },
      "schema": {
        "type": "object",
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "required": [
          "input"
        ],
        "properties": {
          "input": {
            "type": "object",
            "required": [
              "type",
              "method"
            ],
            "properties": {
              "body": {
                "type": "object",
                "required": [
                  "address"
                ],
                "properties": {
                  "address": {
                    "type": "string",
                    "pattern": "^0x[a-fA-F0-9]{40}$"
                  },
                  "network": {
                    "enum": [
                      "ethereum",
                      "sepolia"
                    ],
                    "type": "string",
                    "default": "ethereum"
                  }
                }
              },
              "type": {
                "type": "string",
                "const": "http"
              },
              "method": {
                "enum": [
                  "GET",
                  "HEAD",
                  "DELETE"
                ],
                "type": "string"
              },
              "queryParams": {
                "type": "object",
                "required": [
                  "address"
                ],
                "properties": {
                  "address": {
                    "type": "string",
                    "pattern": "^0x[a-fA-F0-9]{40}$"
                  },
                  "network": {
                    "enum": [
                      "ethereum",
                      "sepolia"
                    ],
                    "type": "string",
                    "default": "ethereum"
                  }
                }
              }
            },
            "additionalProperties": false
          },
          "output": {
            "type": "object",
            "required": [
              "type"
            ],
            "properties": {
              "type": {
                "type": "string"
              },
              "example": {
                "type": "object",
                "properties": {
                  "data": {
                    "type": "object",
                    "description": "Response payload"
                  },
                  "meta": {
                    "type": "object",
                    "properties": {
                      "network": {
                        "type": "string"
                      },
                      "endpoint": {
                        "type": "string"
                      },
                      "cost_usdc": {
                        "type": "string"
                      }
                    }
                  },
                  "error": {
                    "type": [
                      "object",
                      "null"
                    ]
                  }
                }
              }
            }
          }
        }
      },
      "routeTemplate": "/api/chain/code/:address"
    }
  },
  "x402Version": 2
}

Captured payload 3 of 10

{
  "error": "Payment required",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "version": "2",
        "credentialTypes": [
          "authorization"
        ]
      },
      "payTo": "0x52E29e0d2Aa49bfBfC548C0A9F2196F4aa51f3ea",
      "amount": "5000",
      "scheme": "exact",
      "network": "eip155:8453",
      "currency": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "recipient": "0x52E29e0d2Aa49bfBfC548C0A9F2196F4aa51f3ea",
      "maxTimeoutSeconds": 3600
    },
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "version": "2",
        "withdrawDelay": 86400,
        "receiverAuthorizer": "0x11dF9F6280632aB8F12926b3f569E493EaEcf81b"
      },
      "payTo": "0x52E29e0d2Aa49bfBfC548C0A9F2196F4aa51f3ea",
      "amount": "5000",
      "scheme": "batch-settlement",
      "network": "eip155:8453",
      "currency": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "recipient": "0x52E29e0d2Aa49bfBfC548C0A9F2196F4aa51f3ea",
      "maxTimeoutSeconds": 3600
    }
  ],
  "resource": {
    "url": "https://api.onesource.io/api/chain/contract/:address",
    "mimeType": "application/json",
    "description": "Contract introspection via eth_call - name, symbol, decimals, and ERC20/721/1155 interface support"
  },
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "body": {
            "address": "0xdac17f958d2ee523a2206206994597c13d831ec7",
            "network": "ethereum"
          },
          "type": "http",
          "method": "GET",
          "queryParams": {
            "address": "0xdac17f958d2ee523a2206206994597c13d831ec7",
            "network": "ethereum"
          }
        },
        "output": {
          "type": "json",
          "example": {
            "name": "Tether USD",
            "symbol": "USDT",
            "address": "0xdac17f958d2ee523a2206206994597c13d831ec7",
            "decimals": 6,
            "interfaces": [
              "ERC20"
            ]
          }
        }
      },
      "schema": {
        "type": "object",
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "required": [
          "input"
        ],
        "properties": {
          "input": {
            "type": "object",
            "required": [
              "type",
              "method"
            ],
            "properties": {
              "body": {
                "type": "object",
                "required": [
                  "address"
                ],
                "properties": {
                  "address": {
                    "type": "string",
                    "pattern": "^0x[a-fA-F0-9]{40}$"
                  },
                  "network": {
                    "enum": [
                      "ethereum",
                      "sepolia"
                    ],
                    "type": "string",
                    "default": "ethereum"
                  }
                }
              },
              "type": {
                "type": "string",
                "const": "http"
              },
              "method": {
                "enum": [
                  "GET",
                  "HEAD",
                  "DELETE"
                ],
                "type": "string"
              },
              "queryParams": {
                "type": "object",
                "required": [
                  "address"
                ],
                "properties": {
                  "address": {
                    "type": "string",
                    "pattern": "^0x[a-fA-F0-9]{40}$"
                  },
                  "network": {
                    "enum": [
                      "ethereum",
                      "sepolia"
                    ],
                    "type": "string",
                    "default": "ethereum"
                  }
                }
              }
            },
            "additionalProperties": false
          },
          "output": {
            "type": "object",
            "required": [
              "type"
            ],
            "properties": {
              "type": {
                "type": "string"
              },
              "example": {
                "type": "object",
                "properties": {
                  "data": {
                    "type": "object",
                    "description": "Response payload"
                  },
                  "meta": {
                    "type": "object",
                    "properties": {
                      "network": {
                        "type": "string"
                      },
                      "endpoint": {
                        "type": "string"
                      },
                      "cost_usdc": {
                        "type": "string"
                      }
                    }
                  },
                  "error": {
                    "type": [
                      "object",
                      "null"
                    ]
                  }
                }
              }
            }
          }
        }
      },
      "routeTemplate": "/api/chain/contract/:address"
    }
  },
  "x402Version": 2
}

Captured payload 4 of 10

{
  "error": "Payment required",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "version": "2",
        "credentialTypes": [
          "authorization"
        ]
      },
      "payTo": "0x52E29e0d2Aa49bfBfC548C0A9F2196F4aa51f3ea",
      "amount": "5000",
      "scheme": "exact",
      "network": "eip155:8453",
      "currency": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "recipient": "0x52E29e0d2Aa49bfBfC548C0A9F2196F4aa51f3ea",
      "maxTimeoutSeconds": 3600
    },
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "version": "2",
        "withdrawDelay": 86400,
        "receiverAuthorizer": "0x11dF9F6280632aB8F12926b3f569E493EaEcf81b"
      },
      "payTo": "0x52E29e0d2Aa49bfBfC548C0A9F2196F4aa51f3ea",
      "amount": "5000",
      "scheme": "batch-settlement",
      "network": "eip155:8453",
      "currency": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "recipient": "0x52E29e0d2Aa49bfBfC548C0A9F2196F4aa51f3ea",
      "maxTimeoutSeconds": 3600
    }
  ],
  "resource": {
    "url": "https://api.onesource.io/api/chain/ens/:input",
    "mimeType": "application/json",
    "description": "ENS resolve - turn a .eth name into an address, or an address into its primary .eth name, via eth_call on OneSource live Ethereum RPC"
  },
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "body": {
            "input": "vitalik.eth",
            "network": "ethereum"
          },
          "type": "http",
          "method": "GET",
          "queryParams": {
            "input": "vitalik.eth",
            "network": "ethereum"
          }
        },
        "output": {
          "type": "json",
          "example": {
            "mode": "forward",
            "input": "vitalik.eth",
            "address": "0xd8da6bf26964af9d7eed9e03e53415d37aa96045"
          }
        }
      },
      "schema": {
        "type": "object",
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "required": [
          "input"
        ],
        "properties": {
          "input": {
            "type": "object",
            "required": [
              "type",
              "method"
            ],
            "properties": {
              "body": {
                "type": "object",
                "required": [
                  "input"
                ],
                "properties": {
                  "input": {
                    "oneOf": [
                      {
                        "type": "string",
                        "pattern": "^0x[a-fA-F0-9]{40}$"
                      },
                      {
                        "type": "string",
                        "pattern": ".+\\.eth$"
                      }
                    ]
                  },
                  "network": {
                    "enum": [
                      "ethereum",
                      "sepolia"
                    ],
                    "type": "string",
                    "default": "ethereum"
                  }
                }
              },
              "type": {
                "type": "string",
                "const": "http"
              },
              "method": {
                "enum": [
                  "GET",
                  "HEAD",
                  "DELETE"
                ],
                "type": "string"
              },
              "queryParams": {
                "type": "object",
                "required": [
                  "input"
                ],
                "properties": {
                  "input": {
                    "oneOf": [
                      {
                        "type": "string",
                        "pattern": "^0x[a-fA-F0-9]{40}$"
                      },
                      {
                        "type": "string",
                        "pattern": ".+\\.eth$"
                      }
                    ]
                  },
                  "network": {
                    "enum": [
                      "ethereum",
                      "sepolia"
                    ],
                    "type": "string",
                    "default": "ethereum"
                  }
                }
              }
            },
            "additionalProperties": false
          },
          "output": {
            "type": "object",
            "required": [
              "type"
            ],
            "properties": {
              "type": {
                "type": "string"
              },
              "example": {
                "type": "object",
                "properties": {
                  "data": {
                    "type": "object",
                    "description": "Response payload"
                  },
                  "meta": {
                    "type": "object",
                    "properties": {
                      "network": {
                        "type": "string"
                      },
                      "endpoint": {
                        "type": "string"
                      },
                      "cost_usdc": {
                        "type": "string"
                      }
                    }
                  },
                  "error": {
                    "type": [
                      "object",
                      "null"
                    ]
                  }
                }
              }
            }
          }
        }
      },
      "routeTemplate": "/api/chain/ens/:input"
    }
  },
  "x402Version": 2
}

Captured payload 5 of 10

{
  "error": "Payment required",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "version": "2",
        "credentialTypes": [
          "authorization"
        ]
      },
      "payTo": "0x52E29e0d2Aa49bfBfC548C0A9F2196F4aa51f3ea",
      "amount": "5000",
      "scheme": "exact",
      "network": "eip155:8453",
      "currency": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "recipient": "0x52E29e0d2Aa49bfBfC548C0A9F2196F4aa51f3ea",
      "maxTimeoutSeconds": 3600
    },
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "version": "2",
        "withdrawDelay": 86400,
        "receiverAuthorizer": "0x11dF9F6280632aB8F12926b3f569E493EaEcf81b"
      },
      "payTo": "0x52E29e0d2Aa49bfBfC548C0A9F2196F4aa51f3ea",
      "amount": "5000",
      "scheme": "batch-settlement",
      "network": "eip155:8453",
      "currency": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "recipient": "0x52E29e0d2Aa49bfBfC548C0A9F2196F4aa51f3ea",
      "maxTimeoutSeconds": 3600
    }
  ],
  "resource": {
    "url": "https://api.onesource.io/api/chain/erc20-transfers",
    "mimeType": "application/json",
    "description": "ERC20 Transfer logs via eth_getLogs - decoded sender, recipient, and amount for a token or wallet"
  },
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "body": {
            "token": "0xdac17f958d2ee523a2206206994597c13d831ec7",
            "wallet": "0xd8da6bf26964af9d7eed9e03e53415d37aa96045",
            "network": "ethereum"
          },
          "type": "http",
          "method": "GET",
          "queryParams": {
            "token": "0xdac17f958d2ee523a2206206994597c13d831ec7",
            "wallet": "0xd8da6bf26964af9d7eed9e03e53415d37aa96045",
            "network": "ethereum"
          }
        },
        "output": {
          "type": "json",
          "example": {
            "count": 1,
            "transfers": [
              {
                "to": "0x6b175474e89094c44da98b954eedeac495271d0f",
                "from": "0xd8da6bf26964af9d7eed9e03e53415d37aa96045",
                "token": "0xdac17f958d2ee523a2206206994597c13d831ec7",
                "value": "1000000",
                "tx_hash": "0xad7e04119ecd85857728205f5b12e95f0bab8e99f9c2f60be5dc79cfc6a8df1f",
                "block_number": "0x133da1e"
              }
            ]
          }
        }
      },
      "schema": {
        "type": "object",
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "required": [
          "input"
        ],
        "properties": {
          "input": {
            "type": "object",
            "required": [
              "type",
              "method"
            ],
            "properties": {
              "body": {
                "type": "object",
                "properties": {
                  "token": {
                    "type": "string",
                    "pattern": "^0x[a-fA-F0-9]{40}$"
                  },
                  "wallet": {
                    "type": "string",
                    "pattern": "^0x[a-fA-F0-9]{40}$"
                  },
                  "network": {
                    "enum": [
                      "ethereum",
                      "sepolia"
                    ],
                    "type": "string",
                    "default": "ethereum"
                  },
                  "to_block": {
                    "oneOf": [
                      {
                        "type": "integer",
                        "minimum": 0
                      },
                      {
                        "enum": [
                          "latest",
                          "pending",
                          "earliest",
                          "safe",
                          "finalized"
                        ],
                        "type": "string"
                      },
                      {
                        "type": "string",
                        "pattern": "^0x[a-fA-F0-9]+$"
                      }
                    ]
                  },
                  "from_block": {
                    "oneOf": [
                      {
                        "type": "integer",
                        "minimum": 0
                      },
                      {
                        "enum": [
                          "latest",
                          "pending",
                          "earliest",
                          "safe",
                          "finalized"
                        ],
                        "type": "string"
                      },
                      {
                        "type": "string",
                        "pattern": "^0x[a-fA-F0-9]+$"
                      }
                    ]
                  }
                }
              },
              "type": {
                "type": "string",
                "const": "http"
              },
              "method": {
                "enum": [
                  "GET",
                  "HEAD",
                  "DELETE"
                ],
                "type": "string"
              },
              "queryParams": {
                "type": "object",
                "properties": {
                  "token": {
                    "type": "string",
                    "pattern": "^0x[a-fA-F0-9]{40}$"
                  },
                  "wallet": {
                    "type": "string",
                    "pattern": "^0x[a-fA-F0-9]{40}$"
                  },
                  "network": {
                    "enum": [
                      "ethereum",
                      "sepolia"
                    ],
                    "type": "string",
                    "default": "ethereum"
                  },
                  "to_block": {
                    "oneOf": [
                      {
                        "type": "integer",
                        "minimum": 0
                      },
                      {
                        "enum": [
                          "latest",
                          "pending",
                          "earliest",
                          "safe",
                          "finalized"
                        ],
                        "type": "string"
                      },
                      {
                        "type": "string",
                        "pattern": "^0x[a-fA-F0-9]+$"
                      }
                    ]
                  },
                  "from_block": {
                    "oneOf": [
                      {
                        "type": "integer",
                        "minimum": 0
                      },
                      {
                        "enum": [
                          "latest",
                          "pending",
                          "earliest",
                          "safe",
                          "finalized"
                        ],
                        "type": "string"
                      },
                      {
                        "type": "string",
                        "pattern": "^0x[a-fA-F0-9]+$"
                      }
                    ]
                  }
                }
              }
            },
            "additionalProperties": false
          },
          "output": {
            "type": "object",
            "required": [
              "type"
            ],
            "properties": {
              "type": {
                "type": "string"
              },
              "example": {
                "type": "object",
                "properties": {
                  "data": {
                    "type": "object",
                    "description": "Response payload"
                  },
                  "meta": {
                    "type": "object",
                    "properties": {
                      "network": {
                        "type": "string"
                      },
                      "endpoint": {
                        "type": "string"
                      },
                      "cost_usdc": {
                        "type": "string"
                      }
                    }
                  },
                  "error": {
                    "type": [
                      "object",
                      "null"
                    ]
                  }
                }
              }
            }
          }
        }
      }
    }
  },
  "x402Version": 2
}

Captured payload 6 of 10

{
  "error": "Payment required",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "version": "2",
        "credentialTypes": [
          "authorization"
        ]
      },
      "payTo": "0x52E29e0d2Aa49bfBfC548C0A9F2196F4aa51f3ea",
      "amount": "1000",
      "scheme": "exact",
      "network": "eip155:8453",
      "currency": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "recipient": "0x52E29e0d2Aa49bfBfC548C0A9F2196F4aa51f3ea",
      "maxTimeoutSeconds": 3600
    },
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "version": "2",
        "withdrawDelay": 86400,
        "receiverAuthorizer": "0x11dF9F6280632aB8F12926b3f569E493EaEcf81b"
      },
      "payTo": "0x52E29e0d2Aa49bfBfC548C0A9F2196F4aa51f3ea",
      "amount": "1000",
      "scheme": "batch-settlement",
      "network": "eip155:8453",
      "currency": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "recipient": "0x52E29e0d2Aa49bfBfC548C0A9F2196F4aa51f3ea",
      "maxTimeoutSeconds": 3600
    }
  ],
  "resource": {
    "url": "https://api.onesource.io/api/chain/network-info",
    "mimeType": "application/json",
    "description": "Ethereum network info - chain ID, block height, and gas price in one batched RPC call (eth_chainId + eth_blockNumber + eth_gasPrice)"
  },
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "body": {
            "network": "ethereum"
          },
          "type": "http",
          "method": "GET",
          "queryParams": {
            "network": "ethereum"
          }
        },
        "output": {
          "type": "json",
          "example": {
            "network": "ethereum",
            "chain_id": "0x1",
            "gas_price": "0x4a817c800",
            "block_number": "0x133da1e"
          }
        }
      },
      "schema": {
        "type": "object",
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "required": [
          "input"
        ],
        "properties": {
          "input": {
            "type": "object",
            "required": [
              "type",
              "method"
            ],
            "properties": {
              "body": {
                "type": "object",
                "properties": {
                  "network": {
                    "enum": [
                      "ethereum",
                      "sepolia"
                    ],
                    "type": "string",
                    "default": "ethereum"
                  }
                }
              },
              "type": {
                "type": "string",
                "const": "http"
              },
              "method": {
                "enum": [
                  "GET",
                  "HEAD",
                  "DELETE"
                ],
                "type": "string"
              },
              "queryParams": {
                "type": "object",
                "properties": {
                  "network": {
                    "enum": [
                      "ethereum",
                      "sepolia"
                    ],
                    "type": "string",
                    "default": "ethereum"
                  }
                }
              }
            },
            "additionalProperties": false
          },
          "output": {
            "type": "object",
            "required": [
              "type"
            ],
            "properties": {
              "type": {
                "type": "string"
              },
              "example": {
                "type": "object",
                "properties": {
                  "data": {
                    "type": "object",
                    "description": "Response payload"
                  },
                  "meta": {
                    "type": "object",
                    "properties": {
                      "network": {
                        "type": "string"
                      },
                      "endpoint": {
                        "type": "string"
                      },
                      "cost_usdc": {
                        "type": "string"
                      }
                    }
                  },
                  "error": {
                    "type": [
                      "object",
                      "null"
                    ]
                  }
                }
              }
            }
          }
        }
      }
    }
  },
  "x402Version": 2
}

Captured payload 7 of 10

{
  "error": "Payment required",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "version": "2",
        "credentialTypes": [
          "authorization"
        ]
      },
      "payTo": "0x52E29e0d2Aa49bfBfC548C0A9F2196F4aa51f3ea",
      "amount": "3000",
      "scheme": "exact",
      "network": "eip155:8453",
      "currency": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "recipient": "0x52E29e0d2Aa49bfBfC548C0A9F2196F4aa51f3ea",
      "maxTimeoutSeconds": 3600
    },
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "version": "2",
        "withdrawDelay": 86400,
        "receiverAuthorizer": "0x11dF9F6280632aB8F12926b3f569E493EaEcf81b"
      },
      "payTo": "0x52E29e0d2Aa49bfBfC548C0A9F2196F4aa51f3ea",
      "amount": "3000",
      "scheme": "batch-settlement",
      "network": "eip155:8453",
      "currency": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "recipient": "0x52E29e0d2Aa49bfBfC548C0A9F2196F4aa51f3ea",
      "maxTimeoutSeconds": 3600
    }
  ],
  "resource": {
    "url": "https://api.onesource.io/api/chain/nonce/:address",
    "mimeType": "application/json",
    "description": "Next transaction nonce for any Ethereum wallet via eth_getTransactionCount - how many txs it has sent"
  },
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "body": {
            "address": "0xd8da6bf26964af9d7eed9e03e53415d37aa96045",
            "network": "ethereum"
          },
          "type": "http",
          "method": "GET",
          "queryParams": {
            "address": "0xd8da6bf26964af9d7eed9e03e53415d37aa96045",
            "network": "ethereum"
          }
        },
        "output": {
          "type": "json",
          "example": {
            "block": "pending",
            "nonce": "0x4d2",
            "address": "0xd8da6bf26964af9d7eed9e03e53415d37aa96045"
          }
        }
      },
      "schema": {
        "type": "object",
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "required": [
          "input"
        ],
        "properties": {
          "input": {
            "type": "object",
            "required": [
              "type",
              "method"
            ],
            "properties": {
              "body": {
                "type": "object",
                "required": [
                  "address"
                ],
                "properties": {
                  "block": {
                    "oneOf": [
                      {
                        "type": "integer",
                        "minimum": 0
                      },
                      {
                        "enum": [
                          "latest",
                          "pending",
                          "earliest",
                          "safe",
                          "finalized"
                        ],
                        "type": "string"
                      },
                      {
                        "type": "string",
                        "pattern": "^0x[a-fA-F0-9]+$"
                      }
                    ]
                  },
                  "address": {
                    "type": "string",
                    "pattern": "^0x[a-fA-F0-9]{40}$"
                  },
                  "network": {
                    "enum": [
                      "ethereum",
                      "sepolia"
                    ],
                    "type": "string",
                    "default": "ethereum"
                  }
                }
              },
              "type": {
                "type": "string",
                "const": "http"
              },
              "method": {
                "enum": [
                  "GET",
                  "HEAD",
                  "DELETE"
                ],
                "type": "string"
              },
              "queryParams": {
                "type": "object",
                "required": [
                  "address"
                ],
                "properties": {
                  "block": {
                    "oneOf": [
                      {
                        "type": "integer",
                        "minimum": 0
                      },
                      {
                        "enum": [
                          "latest",
                          "pending",
                          "earliest",
                          "safe",
                          "finalized"
                        ],
                        "type": "string"
                      },
                      {
                        "type": "string",
                        "pattern": "^0x[a-fA-F0-9]+$"
                      }
                    ]
                  },
                  "address": {
                    "type": "string",
                    "pattern": "^0x[a-fA-F0-9]{40}$"
                  },
                  "network": {
                    "enum": [
                      "ethereum",
                      "sepolia"
                    ],
                    "type": "string",
                    "default": "ethereum"
                  }
                }
              }
            },
            "additionalProperties": false
          },
          "output": {
            "type": "object",
            "required": [
              "type"
            ],
            "properties": {
              "type": {
                "type": "string"
              },
              "example": {
                "type": "object",
                "properties": {
                  "data": {
                    "type": "object",
                    "description": "Response payload"
                  },
                  "meta": {
                    "type": "object",
                    "properties": {
                      "network": {
                        "type": "string"
                      },
                      "endpoint": {
                        "type": "string"
                      },
                      "cost_usdc": {
                        "type": "string"
                      }
                    }
                  },
                  "error": {
                    "type": [
                      "object",
                      "null"
                    ]
                  }
                }
              }
            }
          }
        }
      },
      "routeTemplate": "/api/chain/nonce/:address"
    }
  },
  "x402Version": 2
}

Captured payload 8 of 10

{
  "error": "Payment required",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "version": "2",
        "credentialTypes": [
          "authorization"
        ]
      },
      "payTo": "0x52E29e0d2Aa49bfBfC548C0A9F2196F4aa51f3ea",
      "amount": "5000",
      "scheme": "exact",
      "network": "eip155:8453",
      "currency": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "recipient": "0x52E29e0d2Aa49bfBfC548C0A9F2196F4aa51f3ea",
      "maxTimeoutSeconds": 3600
    },
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "version": "2",
        "withdrawDelay": 86400,
        "receiverAuthorizer": "0x11dF9F6280632aB8F12926b3f569E493EaEcf81b"
      },
      "payTo": "0x52E29e0d2Aa49bfBfC548C0A9F2196F4aa51f3ea",
      "amount": "5000",
      "scheme": "batch-settlement",
      "network": "eip155:8453",
      "currency": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "recipient": "0x52E29e0d2Aa49bfBfC548C0A9F2196F4aa51f3ea",
      "maxTimeoutSeconds": 3600
    }
  ],
  "resource": {
    "url": "https://api.onesource.io/api/chain/receipt/:hash",
    "mimeType": "application/json",
    "description": "Transaction receipt via eth_getTransactionReceipt - status, gas, and event logs for a mined Ethereum transaction"
  },
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "body": {
            "hash": "0xad7e04119ecd85857728205f5b12e95f0bab8e99f9c2f60be5dc79cfc6a8df1f",
            "network": "ethereum"
          },
          "type": "http",
          "method": "GET",
          "queryParams": {
            "hash": "0xad7e04119ecd85857728205f5b12e95f0bab8e99f9c2f60be5dc79cfc6a8df1f",
            "network": "ethereum"
          }
        },
        "output": {
          "type": "json",
          "example": {
            "logs": [],
            "status": "0x1",
            "gas_used": "0x5208",
            "block_number": "0x133da1e",
            "transaction_hash": "0xad7e04119ecd85857728205f5b12e95f0bab8e99f9c2f60be5dc79cfc6a8df1f",
            "effective_gas_price": "0x3b9aca00"
          }
        }
      },
      "schema": {
        "type": "object",
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "required": [
          "input"
        ],
        "properties": {
          "input": {
            "type": "object",
            "required": [
              "type",
              "method"
            ],
            "properties": {
              "body": {
                "type": "object",
                "required": [
                  "hash"
                ],
                "properties": {
                  "hash": {
                    "type": "string",
                    "pattern": "^0x[a-fA-F0-9]{64}$"
                  },
                  "network": {
                    "enum": [
                      "ethereum",
                      "sepolia"
                    ],
                    "type": "string",
                    "default": "ethereum"
                  }
                }
              },
              "type": {
                "type": "string",
                "const": "http"
              },
              "method": {
                "enum": [
                  "GET",
                  "HEAD",
                  "DELETE"
                ],
                "type": "string"
              },
              "queryParams": {
                "type": "object",
                "required": [
                  "hash"
                ],
                "properties": {
                  "hash": {
                    "type": "string",
                    "pattern": "^0x[a-fA-F0-9]{64}$"
                  },
                  "network": {
                    "enum": [
                      "ethereum",
                      "sepolia"
                    ],
                    "type": "string",
                    "default": "ethereum"
                  }
                }
              }
            },
            "additionalProperties": false
          },
          "output": {
            "type": "object",
            "required": [
              "type"
            ],
            "properties": {
              "type": {
                "type": "string"
              },
              "example": {
                "type": "object",
                "properties": {
                  "data": {
                    "type": "object",
                    "description": "Response payload"
                  },
                  "meta": {
                    "type": "object",
                    "properties": {
                      "network": {
                        "type": "string"
                      },
                      "endpoint": {
                        "type": "string"
                      },
                      "cost_usdc": {
                        "type": "string"
                      }
                    }
                  },
                  "error": {
                    "type": [
                      "object",
                      "null"
                    ]
                  }
                }
              }
            }
          }
        }
      },
      "routeTemplate": "/api/chain/receipt/:hash"
    }
  },
  "x402Version": 2
}

Captured payload 9 of 10

{
  "error": "Payment required",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "version": "2",
        "credentialTypes": [
          "authorization"
        ]
      },
      "payTo": "0x52E29e0d2Aa49bfBfC548C0A9F2196F4aa51f3ea",
      "amount": "5000",
      "scheme": "exact",
      "network": "eip155:8453",
      "currency": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "recipient": "0x52E29e0d2Aa49bfBfC548C0A9F2196F4aa51f3ea",
      "maxTimeoutSeconds": 3600
    },
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "version": "2",
        "withdrawDelay": 86400,
        "receiverAuthorizer": "0x11dF9F6280632aB8F12926b3f569E493EaEcf81b"
      },
      "payTo": "0x52E29e0d2Aa49bfBfC548C0A9F2196F4aa51f3ea",
      "amount": "5000",
      "scheme": "batch-settlement",
      "network": "eip155:8453",
      "currency": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "recipient": "0x52E29e0d2Aa49bfBfC548C0A9F2196F4aa51f3ea",
      "maxTimeoutSeconds": 3600
    }
  ],
  "resource": {
    "url": "https://api.onesource.io/api/chain/call",
    "mimeType": "application/json",
    "description": "Simulate a read-only Ethereum contract call via eth_call - no transaction sent"
  },
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "body": {
            "to": "0xdac17f958d2ee523a2206206994597c13d831ec7",
            "data": "0x0"
          },
          "type": "http",
          "method": "POST",
          "bodyType": "json"
        },
        "output": {
          "type": "json",
          "example": {
            "result": "0x000000000000000000000000000000000000000000000000000000000000002a"
          }
        }
      },
      "schema": {
        "type": "object",
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "required": [
          "input"
        ],
        "properties": {
          "input": {
            "type": "object",
            "required": [
              "type",
              "method",
              "bodyType",
              "body"
            ],
            "properties": {
              "body": {
                "type": "object",
                "required": [
                  "to",
                  "data"
                ],
                "properties": {
                  "to": {
                    "type": "string",
                    "pattern": "^0x[a-fA-F0-9]{40}$"
                  },
                  "data": {
                    "type": "string",
                    "pattern": "^0x[a-fA-F0-9]+$"
                  },
                  "from": {
                    "type": "string",
                    "pattern": "^0x[a-fA-F0-9]{40}$"
                  },
                  "value": {
                    "type": "string",
                    "pattern": "^0x[a-fA-F0-9]+$"
                  }
                }
              },
              "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",
                "properties": {
                  "data": {
                    "type": "object",
                    "description": "Response payload"
                  },
                  "meta": {
                    "type": "object",
                    "properties": {
                      "network": {
                        "type": "string"
                      },
                      "endpoint": {
                        "type": "string"
                      },
                      "cost_usdc": {
                        "type": "string"
                      }
                    }
                  },
                  "error": {
                    "type": [
                      "object",
                      "null"
                    ]
                  }
                }
              }
            }
          }
        }
      }
    }
  },
  "x402Version": 2
}

Captured payload 10 of 10

{
  "error": "Payment required",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "version": "2",
        "credentialTypes": [
          "authorization"
        ]
      },
      "payTo": "0x52E29e0d2Aa49bfBfC548C0A9F2196F4aa51f3ea",
      "amount": "4000",
      "scheme": "exact",
      "network": "eip155:8453",
      "currency": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "recipient": "0x52E29e0d2Aa49bfBfC548C0A9F2196F4aa51f3ea",
      "maxTimeoutSeconds": 3600
    },
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "version": "2",
        "withdrawDelay": 86400,
        "receiverAuthorizer": "0x11dF9F6280632aB8F12926b3f569E493EaEcf81b"
      },
      "payTo": "0x52E29e0d2Aa49bfBfC548C0A9F2196F4aa51f3ea",
      "amount": "4000",
      "scheme": "batch-settlement",
      "network": "eip155:8453",
      "currency": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "recipient": "0x52E29e0d2Aa49bfBfC548C0A9F2196F4aa51f3ea",
      "maxTimeoutSeconds": 3600
    }
  ],
  "resource": {
    "url": "https://api.onesource.io/api/chain/estimate-gas",
    "mimeType": "application/json",
    "description": "Estimate the gas a transaction will consume via eth_estimateGas before signing it"
  },
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "body": {
            "to": "0xdac17f958d2ee523a2206206994597c13d831ec7",
            "data": "0x0"
          },
          "type": "http",
          "method": "POST",
          "bodyType": "json"
        },
        "output": {
          "type": "json",
          "example": {
            "gas_estimate": "0x5208"
          }
        }
      },
      "schema": {
        "type": "object",
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "required": [
          "input"
        ],
        "properties": {
          "input": {
            "type": "object",
            "required": [
              "type",
              "method",
              "bodyType",
              "body"
            ],
            "properties": {
              "body": {
                "type": "object",
                "properties": {
                  "to": {
                    "type": "string",
                    "pattern": "^0x[a-fA-F0-9]{40}$"
                  },
                  "data": {
                    "type": "string",
                    "pattern": "^0x[a-fA-F0-9]+$"
                  },
                  "from": {
                    "type": "string",
                    "pattern": "^0x[a-fA-F0-9]{40}$"
                  },
                  "value": {
                    "type": "string",
                    "pattern": "^0x[a-fA-F0-9]+$"
                  }
                }
              },
              "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",
                "properties": {
                  "data": {
                    "type": "object",
                    "description": "Response payload"
                  },
                  "meta": {
                    "type": "object",
                    "properties": {
                      "network": {
                        "type": "string"
                      },
                      "endpoint": {
                        "type": "string"
                      },
                      "cost_usdc": {
                        "type": "string"
                      }
                    }
                  },
                  "error": {
                    "type": [
                      "object",
                      "null"
                    ]
                  }
                }
              }
            }
          }
        }
      }
    }
  },
  "x402Version": 2
}

Can I trust it score from our own monitoring

score from our own monitoring

96/100 Strong

                           │         │        │ ··
0                          55        75       93

                │     │    │ ·
0               55    75   93

#2 of 76 in Blockchain. Bands: strong 93+, solid 75+, mixed 55+, weak below 55.

Reliability: 100% uptime 30d
Compliance: A 14/14 checks pass
Price: $0.001 to $0.005 p14 in Blockchain
Risk: clean no risk flag
Traction: $67.94 30d 1,134 buyers, top buyer 1% (address, not entity)

14/14 compliance checks

402 payload captured
accepts[] array present
payTo address recoverable
payTo at accepts[0].payTo (conformant shape)
payTo is a valid on-chain address
atomic price declared
atomic price in a sane range
asset (token) address declared
network resolves to CAIP-2
payment scheme declared
served over HTTPS
declares the current x402 version (2)
EIP-712 domain parameters present on every EVM entry
x402 v2 envelope delivered in the payment-required header

402 terms unchanged since 2026-07-20. Last up 2026-10-19.

── Site signals

homepage reachable
openapi doc
pricing page
llms.txt
robots.txt
terms page

How the score works

What the score read on this service: status online, 100% uptime 30d, 285ms response p95, x402 compliance 14 of 14, $0.001 price against the category, on-chain traction measured. Each of those is measured, and each is published in full below.

The score comes from our own monitoring, never from reviews, operator claims, or a language model: reliability, x402 compliance, price against the category, a deterministic risk flag, and a small on-chain traction term, weighted by ranking generation 3. It is not placement anyone can buy: the paid verify tier is reported beside it and is not one of its inputs. Every component below stays published and read-only.

Bands on the 0 to 100 measured score: strong at 93 and above, solid from 75, mixed from 55, weak below 55. Price and speed are scored against the whole category field, every listing in it that carries no danger flag, the scored service included, so the score places a service in its own field.

It is a score inside Blockchain, and only there: price and speed are scored against the whole category field, every listing in it that carries no danger flag, the scored service included, which here means 76 listings, this one among them: the same 76 the position above is counted against. When the two differ, the field is the wider one, because a listing we have measured too little of to rank still sits in the field the price and the speed are normalized over. The same service in a different field would read differently. The same engine answers GET /api/v1/best, and asked for a different pool (the whole directory, or another filter) it returns a different number for this service under this same ranking generation. Neither is more correct: they answer different questions, and the methodology states which is which.

Settled via coinbase ($67.94, 8,295 tx). Traction is a conservative undercount; first settlement seen 2026-02-19.

All measured facts

What it does

OneSource is a listed x402 Blockchain API. Captured payment terms name Base. Monitoring and settlement figures below describe the observations available to this directory; an unpaid HTTP 402 check does not prove that a paid call will deliver.

Assessment computed at 2026-10-19 01:53:14 UTC. Latest service check observed at 2026-10-19 08:01:08 UTC. Service data JSON · Measurement methodology.

Page rendered at 2026-10-19 08:03:28 UTC. This response time is separate from the observation and computation times attached to each measurement.

Latest endpoint observation: 2026-10-19 08:01:08 UTC. Latest price capture: 2026-07-20 16:53:24 UTC. Prices are recorded quotes, not a promise of availability. Token assets and payment terms are listed separately. Endpoint data JSON · Price history JSON · Measurement methodology.

Assessment computed at 2026-10-19 01:53:14 UTC. Uptime uses the stated daily-rollup window; response times are in milliseconds, compliance is passed/evaluated checks, and traction is a measured settlement floor. The comparison score is out of 100 within this category. Assessment JSON · Measurement methodology.

Observed daily coverage: 2026-09-20 to 2026-10-19 UTC. Daily monitoring and settlement rollups do not expose their computation time; a bucket date is not an update timestamp. Latest settlement in the assessment: 2026-10-19 00:28:55 UTC. Uptime and response JSON · Volume JSON · Buyers JSON · Measurement methodology.

Ranked from the measured category pool, refreshed at most once a minute. The comparison has no persisted computation timestamp; the assessment time above belongs to this service only. Ranking API documentation · Ranking methodology.

x402 List home · Services · Blockchain

uptime · latest daily rollup: 100%
uptime 7d: 100%
uptime 30d: 100%
uptime 90d: 100%
response p95: 285ms
avg response: 280ms
total checks: 2,782

Measured on the unpaid 402 handshake, not the paid call. A service can 402 correctly and still fail after payment.

price (min): $0.001
price (max): $0.005
category percentile (min): p14 in Blockchain
category percentile (max): p22 in Blockchain
endpoints / prices: 10 / 4
model: tiered
stability: 100%

No deterministic risk flag. Risk fires only on an exact blocklist match, or a reserved-brand name with a mismatched verified payTo. Never from low uptime, a high price, or a model guess.

domain age: -
registrar: -
hosting: custom
domain created: ---

Identity facts, not a risk score.

assessment volume 30d: $67.94
exact assessment volume 30d (USD): 67.938
assessment recorded at (UTC): 2026-10-19T01:53:14.435Z
buyers 30d: 1,134
settlements 30d: 8,295
measured since: 2026-02-19 (start of our harvest window)
last settlement: 2026-10-19
top buyer share: 1% of 30d volume (address, not entity)
top 3 buyers share: 4% of 30d volume (addresses, not entities)
concentrated volume: no
trend 7d vs 30d: 0.04x the 30d daily rate
networks: eip155:8453
volume all-time: $417.38
settlements all-time: 100,351
median settlement 30d: $0.005
max settlement 30d: $0.05

Assessment volume uses the latest 30d assessment. Over time sums daily address snapshots, rounded to cents and refreshed separately. The two sources can differ in timing, precision and shared-address attribution. Amounts use cents for comparison; known sub-cent values keep up to 12 significant digits. The exact stored assessment value is shown above.

Conservative undercount: only USDC settlements via facilitators we measure are counted. A measured floor, not an estimate.

Top buyer share lowers the on-chain traction part of the ranking score behind this page's verdict and /best, by up to half when one address holds all 30d volume. The Recommended and Highest volume sorts of the services list do not use it; they use the Concentrated volume rule instead.

member since: 2026-07-20

Recent checks

Latest 18 unpaid HTTP checks, newest first; response times in milliseconds, observation times in UTC
Checked at (UTC)	Status	HTTP	Response	Endpoints
2026-10-19 08:01:08 UTC	Online	402	152ms	10
2026-10-19 07:45:09 UTC	Online	402	264ms	10
2026-10-19 07:29:07 UTC	Online	402	237ms	10
2026-10-19 07:13:08 UTC	Online	402	234ms	10
2026-10-19 06:57:08 UTC	Online	402	214ms	10
2026-10-19 06:40:08 UTC	Online	402	138ms	10
2026-10-19 06:24:08 UTC	Online	402	234ms	10
2026-10-19 06:08:08 UTC	Online	402	259ms	10
2026-10-19 05:52:07 UTC	Online	402	205ms	10
2026-10-19 05:36:07 UTC	Online	402	200ms	10
2026-10-19 05:20:08 UTC	Online	402	241ms	10
2026-10-19 05:04:09 UTC	Online	402	330ms	10
2026-10-19 04:48:08 UTC	Online	402	275ms	10
2026-10-19 04:32:06 UTC	Online	402	271ms	10
2026-10-19 04:16:07 UTC	Online	402	294ms	10
2026-10-19 04:00:05 UTC	Online	402	285ms	10
2026-10-19 03:44:05 UTC	Online	402	346ms	10
2026-10-19 03:28:04 UTC	Online	402	186ms	10

Changes0 in 30d

No changes recorded in the last 30 days.

all changes

Over time

On-chain volume daily snapshots, USD 30d: $67.94, peak $7.49 on 10-01

                                        $7.49                                                    
                      ▅▅                ██                                                       
             ▃▃ ▅▅ ██ ██    ▃▃          ██ ██                                                    
             ██ ██ ██ ██    ██          ██ ██ ▇▇ ▇▇                                              
             ██ ██ ██ ██ ▇▇ ██ ▃▃    ▇▇ ██ ██ ██ ██    ▃▃                                        
       ▆▆ ▁▁ ██ ██ ██ ██ ██ ██ ██ ▁▁ ██ ██ ██ ██ ██ ▁▁ ██ ▁▁ ▆▆ ▁▁ ▁▁ ▁▁ ▁▁ ▁▁ ▁▁ ▁▁ ▁▁ ▁▁ ▁▁ ▁▁ 
    $0

volume

Distinct buyers 6 to 116 per dayDistinct buyers per day

       35 26 79 92  ▲ 96 59 75 49 11 60  ▲ 87 64 71  8 11  6 12  9  6  9 13 10 18 16  7 11 11  6

Uptime 100% on all 29 completed days

       ██ ██ ██ ██ ██ ██ ██ ██ ██ ██ ██ ██ ██ ██ ██ ██ ██ ██ ██ ██ ██ ██ ██ ██ ██ ██ ██ ██ ██ ██

       09-20                                     10-04                                   10-19*

Volume 30d: $67.94
Uptime: 100% on all 29 completed days

Daily on-chain settlement volume in US dollars, 2026-09-20 to 2026-10-19; highest day $7.49 on 10-01; distinct buyers per day

Day    Volume             USD  Buyers
09-20                   $1.08      35
09-21                   $0.19      26
09-22                   $5.12      79
09-23                   $5.47      92
09-24                   $5.91     103
09-25                   $6.91      96
09-26                   $2.80      59
09-27                   $5.12      75
09-28                   $2.04      49
09-29                   $0.11      11
09-30                   $2.86      60
10-01                   $7.49     116
10-02                   $5.92      87
10-03                   $4.37      64
10-04                   $4.26      71
10-05                   $0.11       8
10-06                   $1.99      11
10-07                   $0.08       6
10-08                   $1.18      12
10-09                   $0.06       9
10-10                   $0.04       6
10-11                   $0.04       9
10-12                   $0.08      13
10-13                   $0.09      10
10-14                   $0.20      18
10-15                   $0.07      16
10-16                   $0.06       7
10-17                   $0.04      11
10-18                   $0.16      11
10-19*                  $0.02       6

More charts

Response time daily average, ms min 149ms, avg 281ms, max 422ms

       ▇▇ ██ ▇▇ ▆▆ ▅▅ ▆▆ ██ ██ ▆▆ ▅▅ ▅▅ ▅▅ ▄▄ ▅▅ ▆▆ ▅▅ ▆▆ ▅▅ ▇▇ ▅▅ ▅▅ ▅▅ ▅▅ ▄▄ ▄▄ ▄▄ ▄▄ ▃▃ ▄▄ ▅▅

09-20 to 10-19* UTC

      ▇█▇▆▅▆██▆▅▅▅▄▅▆▅▆▅▇▅▅▅▅▄▄▄▄▃▄▅

      09-20         10-04     10-19*

Scores over time

x402 compliance low 14/14, high 14/14

       ▄▄ ▄▄ ▄▄ ▄▄ ▄▄ ▄▄ ▄▄ ▄▄ ▄▄ ▄▄ ▄▄ ▄▄ ▄▄ ▄▄ ▄▄ ▄▄ ▄▄ ▄▄ ▄▄ ▄▄ ▄▄ ▄▄ ▄▄ ▄▄ ▄▄ ▄▄ ▄▄ ▄▄ ▄▄ ▄▄

09-20 to 10-19* UTC

      ▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄

      09-20         10-04     10-19*

Price percentile in Blockchain own low to high; exact values below

       ▇▇ ▇▇ ▇▇ ▅▅ ▅▅ ▄▄ ▄▄ ▄▄ ▄▄ ▃▃ ▃▃ ▃▃ ▃▃ ▃▃ ▁▁ ▁▁ ▁▁ ▁▁ ▃▃ ▃▃ ▃▃ ▃▃ ▃▃ ▃▃ ▁▁ ▁▁ ▁▁ ▁▁ ▁▁ ▁▁

09-20 to 10-19* UTC

      ▇▇▇▅▅▄▄▄▄▃▃▃▃▃▁▁▁▁▃▃▃▃▃▃▁▁▁▁▁▁

      09-20         10-04     10-19*

Site signals present (of 6) own low to high; exact values below

       ▄▄ ▄▄ ▄▄ ▄▄ ▄▄ ▄▄ ▄▄ ▄▄ ▄▄ ▄▄ ▄▄ ▄▄ ▄▄ ▄▄ ▄▄ ▄▄ ▄▄ ▄▄ ▄▄ ▄▄ ▄▄ ▄▄ ▄▄ ▄▄ ▄▄ ▄▄ ▄▄ ▄▄ ▄▄ ▄▄

09-20 to 10-19* UTC

      ▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄

      09-20         10-04     10-19*

       09-20                                     10-04                                   10-19*

      09-20         10-04     10-19*

Scores: one day per column, 09-20 to 10-19*, on the columns of Response time. Uptime held 100% every day in this window, including any partial day. Daily readings remain in the Uptime strip and Values. The checklist grew from 11 to 14 checks on 2026-07-28, before this window. Pillar lines use their own low and high. Exact dated readings are available in each readout and in Values.

Each series spans only the dates it has data for. Every series is also served as JSON at /api/v1/services/onesource/price, /scores, /volume and /buyers.

Values

* today so far, partial (UTC).

The uptime summary counts completed UTC days only. The strip, readouts and table retain today's partial reading.

Daily snapshot total, 30d: $63.87, peak $7.49 on 10-01. The visible 30d total in Traction comes from the latest assessment. These sources can differ in their window, refresh time, cent rounding and shared-address attribution.

Daily address snapshots: 2026-09-20 to 2026-10-19 UTC; * today so far, partial (UTC). Daily snapshots store cents. A recorded $0.00 with settlements cannot distinguish exact zero from volume rounded away. Lost precision is unavailable here.

Settlement volume uses the stored USD valuation of tracked payments; it is distinct from token quantities. USD-pegged assets are valued at 1 USD per token in these rollups. The measured settlement floor does not cover all payments to this service.

Assessment history last recorded at 2026-10-19 01:53:14 UTC. Each UTC day uses its last recorded run; missing readings stay unmeasured. Assessment history JSON · Measurement methodology.

Daily values, 2026-09-20 to 2026-10-19: address settlement volume in USD, distinct buyer and settlement counts, uptime percent, average response milliseconds, compliance passed/total, price percentile 0-100, site signals out of 6; UTC dates
Day	Volume	Buyers	Settlements	Uptime	Response	Compliance	Price percentile	Site signals
2026-09-20	$1.08	35	167	100%	381.63ms	14/14	p18	3/6
2026-09-21	$0.19	26	57	100%	417.13ms	14/14	p18	3/6
2026-09-22	$5.12	79	513	100%	377.56ms	14/14	p18	3/6
2026-09-23	$5.47	92	738	100%	328.51ms	14/14	p17	3/6
2026-09-24	$5.91	103	772	100%	288.44ms	14/14	p17	3/6
2026-09-25	$6.91	96	751	100%	336.52ms	14/14	p16	3/6
2026-09-26	$2.80	59	334	100%	407.91ms	14/14	p16	3/6
2026-09-27	$5.12	75	619	100%	422.20ms	14/14	p16	3/6
2026-09-28	$2.04	49	303	100%	294.88ms	14/14	p16	3/6
2026-09-29	$0.11	11	26	100%	276.93ms	14/14	p15	3/6
2026-09-30	$2.86	60	384	100%	258.00ms	14/14	p15	3/6
2026-10-01	$7.49	116	939	100%	273.01ms	14/14	p15	3/6
2026-10-02	$5.92	87	683	100%	232.65ms	14/14	p15	3/6
2026-10-03	$4.37	64	490	100%	283.00ms	14/14	p15	3/6
2026-10-04	$4.26	71	569	100%	290.86ms	14/14	p14	3/6
2026-10-05	$0.11	8	21	100%	242.24ms	14/14	p14	3/6
2026-10-06	$1.99	11	114	100%	290.46ms	14/14	p14	3/6
2026-10-07	$0.08	6	14	100%	283.81ms	14/14	p14	3/6
2026-10-08	$1.18	12	78	100%	375.03ms	14/14	p15	3/6
2026-10-09	$0.06	9	11	100%	250.63ms	14/14	p15	3/6
2026-10-10	$0.04	6	8	100%	260.94ms	14/14	p15	3/6
2026-10-11	$0.04	9	11	100%	247.28ms	14/14	p15	3/6
2026-10-12	$0.08	13	17	100%	242.54ms	14/14	p15	3/6
2026-10-13	$0.09	10	13	100%	203.59ms	14/14	p15	3/6
2026-10-14	$0.20	18	34	100%	211.43ms	14/14	p14	3/6
2026-10-15	$0.07	16	30	100%	190.69ms	14/14	p14	3/6
2026-10-16	$0.06	7	20	100%	191.80ms	14/14	p14	3/6
2026-10-17	$0.04	11	19	100%	148.96ms	14/14	p14	3/6
2026-10-18	$0.16	11	26	100%	188.39ms	14/14	p14	3/6
2026-10-19*	$0.02	6	8	100%	239.69ms	14/14	p14	3/6

Alternatives in Blockchain

keyring-agent strong 97/100 99.9% up 30d $1.5k 30d

Loyal Spark strong 96/100 100% up 30d $92.50 30d

Pocket Network strong 94/100 100% up 30d $186.57 30d

SolEnrich solid 93/100 100% up 30d $94.76 30d

Chainlink for Agents solid 91/100 100% up 30d $374.21 30d

5 of 75 other ranked services in Blockchain, ordered by the same measured score.

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