{
  "x402Version": 2,
  "id": 38014,
  "slug": "38014",
  "resource": "https://evmstate.com/v1/state-batch/50",
  "description": "Read-only EVM state API for wallet snapshots, ERC-20 balances, token allowances, contract code, block heights, and bounded eth_call reads across Ethereum, Base, Arbitrum, Optimism, and Polygon. Fixed price: $0.10 USDC on Base for a batch of up to 50 checks. Only submitted checks run. Results are provider-reported RPC data, not cryptographic proofs.",
  "type": "http",
  "serviceName": "EVM State Batch",
  "resourceType": "Utilities",
  "accepts": [
    {
      "scheme": "exact",
      "network": "eip155:8453",
      "payTo": "0xF33aEE5D3c11153BbF1cFb076d0793DE52F573e8",
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "amount": "100000",
      "amountUsd": 0.1,
      "maxTimeoutSeconds": 300
    }
  ],
  "outputSchema": {
    "properties": {
      "example": {
        "description": "Illustrative five-chain snapshot response. Block heights and values in this example are placeholders; live values are returned from the RPC providers when the request runs.",
        "properties": {
          "expiresAt": {
            "type": "string"
          },
          "recoveryUrl": {
            "type": "string"
          },
          "requestId": {
            "type": "string"
          },
          "results": {
            "items": {
              "properties": {
                "blockNumber": {
                  "type": "string"
                },
                "chain": {
                  "type": "string"
                },
                "id": {
                  "type": "string"
                },
                "type": {
                  "type": "string"
                },
                "value": {}
              },
              "required": [
                "id",
                "chain",
                "type",
                "blockNumber",
                "value"
              ],
              "type": "object"
            },
            "type": "array"
          },
          "snapshotBlocks": {
            "additionalProperties": {
              "type": "string"
            },
            "type": "object"
          },
          "verification": {
            "type": "string"
          }
        },
        "required": [
          "requestId",
          "results",
          "snapshotBlocks",
          "verification",
          "recoveryUrl",
          "expiresAt"
        ],
        "type": "object"
      },
      "type": {
        "type": "string"
      }
    },
    "required": [
      "type"
    ],
    "type": "object"
  },
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "body": {
            "checks": [
              {
                "address": "0x0000000000000000000000000000000000000000",
                "chain": "ethereum",
                "id": "ethereum-native-balance",
                "type": "native_balance"
              },
              {
                "address": "0x0000000000000000000000000000000000000000",
                "chain": "base",
                "id": "base-native-balance",
                "type": "native_balance"
              },
              {
                "address": "0x0000000000000000000000000000000000000000",
                "chain": "arbitrum",
                "id": "arbitrum-native-balance",
                "type": "native_balance"
              },
              {
                "address": "0x0000000000000000000000000000000000000000",
                "chain": "optimism",
                "id": "optimism-native-balance",
                "type": "native_balance"
              },
              {
                "address": "0x0000000000000000000000000000000000000000",
                "chain": "polygon",
                "id": "polygon-native-balance",
                "type": "native_balance"
              }
            ],
            "requestId": "12345678-1234-4234-9234-123456789abc"
          },
          "bodyType": "json",
          "method": "POST",
          "type": "http"
        },
        "output": {
          "example": {
            "expiresAt": "2026-11-01T00:00:00.000Z",
            "recoveryUrl": "https://evmstate.com/v1/results/12345678-1234-4234-9234-123456789abc",
            "requestId": "12345678-1234-4234-9234-123456789abc",
            "results": [
              {
                "blockNumber": "0x18e456e",
                "chain": "ethereum",
                "id": "ethereum-native-balance",
                "type": "native_balance",
                "value": "0x0"
              },
              {
                "blockNumber": "0x31a5006",
                "chain": "base",
                "id": "base-native-balance",
                "type": "native_balance",
                "value": "0x0"
              },
              {
                "blockNumber": "0x1e729abb",
                "chain": "arbitrum",
                "id": "arbitrum-native-balance",
                "type": "native_balance",
                "value": "0x0"
              },
              {
                "blockNumber": "0x965919b",
                "chain": "optimism",
                "id": "optimism-native-balance",
                "type": "native_balance",
                "value": "0x0"
              },
              {
                "blockNumber": "0x5a67efe",
                "chain": "polygon",
                "id": "polygon-native-balance",
                "type": "native_balance",
                "value": "0x0"
              }
            ],
            "snapshotBlocks": {
              "arbitrum": "0x1e729abb",
              "base": "0x31a5006",
              "ethereum": "0x18e456e",
              "optimism": "0x965919b",
              "polygon": "0x5a67efe"
            },
            "verification": "each result is a successful JSON-RPC response"
          },
          "type": "json"
        }
      },
      "schema": {
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "properties": {
          "input": {
            "additionalProperties": false,
            "properties": {
              "body": {
                "properties": {
                  "checks": {
                    "description": "Only these checks run. Each check needs a unique id and supported chain. For a five-chain wallet snapshot, create one native_balance check for each supported chain using the same wallet address. The discovery example uses the valid all-zero address; replace it with the target wallet. Token and allowance checks need the token and spender targets already identified by the calling task.",
                    "items": {
                      "oneOf": [
                        {
                          "properties": {
                            "address": {
                              "pattern": "^0x[0-9a-fA-F]{40}$",
                              "type": "string"
                            },
                            "block": {
                              "pattern": "^0x[0-9a-fA-F]{1,64}$",
                              "type": "string"
                            },
                            "chain": {
                              "enum": [
                                "ethereum",
                                "base",
                                "arbitrum",
                                "optimism",
                                "polygon"
                              ],
                              "type": "string"
                            },
                            "id": {
                              "pattern": "^[a-zA-Z0-9_-]{1,64}$",
                              "type": "string"
                            },
                            "type": {
                              "const": "native_balance"
                            }
                          },
                          "required": [
                            "id",
                            "chain",
                            "type",
                            "address"
                          ],
                          "type": "object"
                        },
                        {
                          "properties": {
                            "block": {
                              "pattern": "^0x[0-9a-fA-F]{1,64}$",
                              "type": "string"
                            },
                            "chain": {
                              "enum": [
                                "ethereum",
                                "base",
                                "arbitrum",
                                "optimism",
                                "polygon"
                              ],
                              "type": "string"
                            },
                            "id": {
                              "pattern": "^[a-zA-Z0-9_-]{1,64}$",
                              "type": "string"
                            },
                            "owner": {
                              "pattern": "^0x[0-9a-fA-F]{40}$",
                              "type": "string"
                            },
                            "token": {
                              "pattern": "^0x[0-9a-fA-F]{40}$",
                              "type": "string"
                            },
                            "type": {
                              "const": "erc20_balance"
                            }
                          },
                          "required": [
                            "id",
                            "chain",
                            "type",
                            "token",
                            "owner"
                          ],
                          "type": "object"
                        },
                        {
                          "properties": {
                            "block": {
                              "pattern": "^0x[0-9a-fA-F]{1,64}$",
                              "type": "string"
                            },
                            "chain": {
                              "enum": [
                                "ethereum",
                                "base",
                                "arbitrum",
                                "optimism",
                                "polygon"
                              ],
                              "type": "string"
                            },
                            "id": {
                              "pattern": "^[a-zA-Z0-9_-]{1,64}$",
                              "type": "string"
                            },
                            "owner": {
                              "pattern": "^0x[0-9a-fA-F]{40}$",
                              "type": "string"
                            },
                            "spender": {
                              "pattern": "^0x[0-9a-fA-F]{40}$",
                              "type": "string"
                            },
                            "token": {
                              "pattern": "^0x[0-9a-fA-F]{40}$",
                              "type": "string"
                            },
                            "type": {
                              "const": "allowance"
                            }
                          },
                          "required": [
                            "id",
                            "chain",
                            "type",
                            "token",
                            "owner",
                            "spender"
                          ],
                          "type": "object"
                        },
                        {
                          "properties": {
                            "address": {
                              "pattern": "^0x[0-9a-fA-F]{40}$",
                              "type": "string"
                            },
                            "block": {
                              "pattern": "^0x[0-9a-fA-F]{1,64}$",
                              "type": "string"
                            },
                            "chain": {
                              "enum": [
                                "ethereum",
                                "base",
                                "arbitrum",
                                "optimism",
                                "polygon"
                              ],
                              "type": "string"
                            },
                            "id": {
                              "pattern": "^[a-zA-Z0-9_-]{1,64}$",
                              "type": "string"
                            },
                            "type": {
                              "const": "contract_code"
                            }
                          },
                          "required": [
                            "id",
                            "chain",
                            "type",
                            "address"
                          ],
                          "type": "object"
                        },
                        {
                          "properties": {
                            "chain": {
                              "enum": [
                                "ethereum",
                                "base",
                                "arbitrum",
                                "optimism",
                                "polygon"
                              ],
                              "type": "string"
                            },
                            "id": {
                              "pattern": "^[a-zA-Z0-9_-]{1,64}$",
                              "type": "string"
                            },
                            "type": {
                              "const": "block_number"
                            }
                          },
                          "required": [
                            "id",
                            "chain",
                            "type"
                          ],
                          "type": "object"
                        },
                        {
                          "properties": {
                            "block": {
                              "pattern": "^0x[0-9a-fA-F]{1,64}$",
                              "type": "string"
                            },
                            "chain": {
                              "enum": [
                                "ethereum",
                                "base",
                                "arbitrum",
                                "optimism",
                                "polygon"
                              ],
                              "type": "string"
                            },
                            "data": {
                              "maxLength": 8194,
                              "pattern": "^0x(?:[0-9a-fA-F]{2})*$",
                              "type": "string"
                            },
                            "id": {
                              "pattern": "^[a-zA-Z0-9_-]{1,64}$",
                              "type": "string"
                            },
                            "to": {
                              "pattern": "^0x[0-9a-fA-F]{40}$",
                              "type": "string"
                            },
                            "type": {
                              "const": "eth_call"
                            }
                          },
                          "required": [
                            "id",
                            "chain",
                            "type",
                            "to",
                            "data"
                          ],
                          "type": "object"
                        }
                      ]
                    },
                    "maxItems": 50,
                    "minItems": 1,
                    "type": "array"
                  },
                  "requestId": {
                    "description": "Generate a fresh UUIDv4 for each new request and retain it to recover the exact paid result. The Bazaar example UUID is illustrative; replace it before calling.",
                    "pattern": "^[0-9a-fA-F]{8}-[0-9a-fA-F]{4}-4[0-9a-fA-F]{3}-[89abAB][0-9a-fA-F]{3}-[0-9a-fA-F]{12}$",
                    "type": "string"
                  }
                },
                "required": [
                  "requestId",
                  "checks"
                ],
                "type": "object"
              },
              "bodyType": {
                "enum": [
                  "json",
                  "form-data",
                  "text"
                ],
                "type": "string"
              },
              "method": {
                "enum": [
                  "POST"
                ],
                "type": "string"
              },
              "type": {
                "const": "http",
                "type": "string"
              }
            },
            "required": [
              "type",
              "method",
              "bodyType",
              "body"
            ],
            "type": "object"
          },
          "output": {
            "properties": {
              "example": {
                "description": "Illustrative five-chain snapshot response. Block heights and values in this example are placeholders; live values are returned from the RPC providers when the request runs.",
                "properties": {
                  "expiresAt": {
                    "type": "string"
                  },
                  "recoveryUrl": {
                    "type": "string"
                  },
                  "requestId": {
                    "type": "string"
                  },
                  "results": {
                    "items": {
                      "properties": {
                        "blockNumber": {
                          "type": "string"
                        },
                        "chain": {
                          "type": "string"
                        },
                        "id": {
                          "type": "string"
                        },
                        "type": {
                          "type": "string"
                        },
                        "value": {}
                      },
                      "required": [
                        "id",
                        "chain",
                        "type",
                        "blockNumber",
                        "value"
                      ],
                      "type": "object"
                    },
                    "type": "array"
                  },
                  "snapshotBlocks": {
                    "additionalProperties": {
                      "type": "string"
                    },
                    "type": "object"
                  },
                  "verification": {
                    "type": "string"
                  }
                },
                "required": [
                  "requestId",
                  "results",
                  "snapshotBlocks",
                  "verification",
                  "recoveryUrl",
                  "expiresAt"
                ],
                "type": "object"
              },
              "type": {
                "type": "string"
              }
            },
            "required": [
              "type"
            ],
            "type": "object"
          }
        },
        "required": [
          "input"
        ],
        "type": "object"
      }
    }
  },
  "tags": [
    "evm",
    "wallet",
    "multi-chain",
    "token",
    "allowance",
    "bazaar"
  ],
  "sourceHost": "evmstate.com",
  "lastUpdated": "2026-10-05T08:09:40.473Z",
  "quality": {
    "calls30d": 3,
    "uniquePayers30d": 1,
    "lastCalledAt": "2026-10-05T08:09:39.879Z"
  },
  "metadata": {
    "serviceName": "EVM State Batch",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "body": {
              "checks": [
                {
                  "address": "0x0000000000000000000000000000000000000000",
                  "chain": "ethereum",
                  "id": "ethereum-native-balance",
                  "type": "native_balance"
                },
                {
                  "address": "0x0000000000000000000000000000000000000000",
                  "chain": "base",
                  "id": "base-native-balance",
                  "type": "native_balance"
                },
                {
                  "address": "0x0000000000000000000000000000000000000000",
                  "chain": "arbitrum",
                  "id": "arbitrum-native-balance",
                  "type": "native_balance"
                },
                {
                  "address": "0x0000000000000000000000000000000000000000",
                  "chain": "optimism",
                  "id": "optimism-native-balance",
                  "type": "native_balance"
                },
                {
                  "address": "0x0000000000000000000000000000000000000000",
                  "chain": "polygon",
                  "id": "polygon-native-balance",
                  "type": "native_balance"
                }
              ],
              "requestId": "12345678-1234-4234-9234-123456789abc"
            },
            "bodyType": "json",
            "method": "POST",
            "type": "http"
          },
          "output": {
            "example": {
              "expiresAt": "2026-11-01T00:00:00.000Z",
              "recoveryUrl": "https://evmstate.com/v1/results/12345678-1234-4234-9234-123456789abc",
              "requestId": "12345678-1234-4234-9234-123456789abc",
              "results": [
                {
                  "blockNumber": "0x18e456e",
                  "chain": "ethereum",
                  "id": "ethereum-native-balance",
                  "type": "native_balance",
                  "value": "0x0"
                },
                {
                  "blockNumber": "0x31a5006",
                  "chain": "base",
                  "id": "base-native-balance",
                  "type": "native_balance",
                  "value": "0x0"
                },
                {
                  "blockNumber": "0x1e729abb",
                  "chain": "arbitrum",
                  "id": "arbitrum-native-balance",
                  "type": "native_balance",
                  "value": "0x0"
                },
                {
                  "blockNumber": "0x965919b",
                  "chain": "optimism",
                  "id": "optimism-native-balance",
                  "type": "native_balance",
                  "value": "0x0"
                },
                {
                  "blockNumber": "0x5a67efe",
                  "chain": "polygon",
                  "id": "polygon-native-balance",
                  "type": "native_balance",
                  "value": "0x0"
                }
              ],
              "snapshotBlocks": {
                "arbitrum": "0x1e729abb",
                "base": "0x31a5006",
                "ethereum": "0x18e456e",
                "optimism": "0x965919b",
                "polygon": "0x5a67efe"
              },
              "verification": "each result is a successful JSON-RPC response"
            },
            "type": "json"
          }
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "additionalProperties": false,
              "properties": {
                "body": {
                  "properties": {
                    "checks": {
                      "description": "Only these checks run. Each check needs a unique id and supported chain. For a five-chain wallet snapshot, create one native_balance check for each supported chain using the same wallet address. The discovery example uses the valid all-zero address; replace it with the target wallet. Token and allowance checks need the token and spender targets already identified by the calling task.",
                      "items": {
                        "oneOf": [
                          {
                            "properties": {
                              "address": {
                                "pattern": "^0x[0-9a-fA-F]{40}$",
                                "type": "string"
                              },
                              "block": {
                                "pattern": "^0x[0-9a-fA-F]{1,64}$",
                                "type": "string"
                              },
                              "chain": {
                                "enum": [
                                  "ethereum",
                                  "base",
                                  "arbitrum",
                                  "optimism",
                                  "polygon"
                                ],
                                "type": "string"
                              },
                              "id": {
                                "pattern": "^[a-zA-Z0-9_-]{1,64}$",
                                "type": "string"
                              },
                              "type": {
                                "const": "native_balance"
                              }
                            },
                            "required": [
                              "id",
                              "chain",
                              "type",
                              "address"
                            ],
                            "type": "object"
                          },
                          {
                            "properties": {
                              "block": {
                                "pattern": "^0x[0-9a-fA-F]{1,64}$",
                                "type": "string"
                              },
                              "chain": {
                                "enum": [
                                  "ethereum",
                                  "base",
                                  "arbitrum",
                                  "optimism",
                                  "polygon"
                                ],
                                "type": "string"
                              },
                              "id": {
                                "pattern": "^[a-zA-Z0-9_-]{1,64}$",
                                "type": "string"
                              },
                              "owner": {
                                "pattern": "^0x[0-9a-fA-F]{40}$",
                                "type": "string"
                              },
                              "token": {
                                "pattern": "^0x[0-9a-fA-F]{40}$",
                                "type": "string"
                              },
                              "type": {
                                "const": "erc20_balance"
                              }
                            },
                            "required": [
                              "id",
                              "chain",
                              "type",
                              "token",
                              "owner"
                            ],
                            "type": "object"
                          },
                          {
                            "properties": {
                              "block": {
                                "pattern": "^0x[0-9a-fA-F]{1,64}$",
                                "type": "string"
                              },
                              "chain": {
                                "enum": [
                                  "ethereum",
                                  "base",
                                  "arbitrum",
                                  "optimism",
                                  "polygon"
                                ],
                                "type": "string"
                              },
                              "id": {
                                "pattern": "^[a-zA-Z0-9_-]{1,64}$",
                                "type": "string"
                              },
                              "owner": {
                                "pattern": "^0x[0-9a-fA-F]{40}$",
                                "type": "string"
                              },
                              "spender": {
                                "pattern": "^0x[0-9a-fA-F]{40}$",
                                "type": "string"
                              },
                              "token": {
                                "pattern": "^0x[0-9a-fA-F]{40}$",
                                "type": "string"
                              },
                              "type": {
                                "const": "allowance"
                              }
                            },
                            "required": [
                              "id",
                              "chain",
                              "type",
                              "token",
                              "owner",
                              "spender"
                            ],
                            "type": "object"
                          },
                          {
                            "properties": {
                              "address": {
                                "pattern": "^0x[0-9a-fA-F]{40}$",
                                "type": "string"
                              },
                              "block": {
                                "pattern": "^0x[0-9a-fA-F]{1,64}$",
                                "type": "string"
                              },
                              "chain": {
                                "enum": [
                                  "ethereum",
                                  "base",
                                  "arbitrum",
                                  "optimism",
                                  "polygon"
                                ],
                                "type": "string"
                              },
                              "id": {
                                "pattern": "^[a-zA-Z0-9_-]{1,64}$",
                                "type": "string"
                              },
                              "type": {
                                "const": "contract_code"
                              }
                            },
                            "required": [
                              "id",
                              "chain",
                              "type",
                              "address"
                            ],
                            "type": "object"
                          },
                          {
                            "properties": {
                              "chain": {
                                "enum": [
                                  "ethereum",
                                  "base",
                                  "arbitrum",
                                  "optimism",
                                  "polygon"
                                ],
                                "type": "string"
                              },
                              "id": {
                                "pattern": "^[a-zA-Z0-9_-]{1,64}$",
                                "type": "string"
                              },
                              "type": {
                                "const": "block_number"
                              }
                            },
                            "required": [
                              "id",
                              "chain",
                              "type"
                            ],
                            "type": "object"
                          },
                          {
                            "properties": {
                              "block": {
                                "pattern": "^0x[0-9a-fA-F]{1,64}$",
                                "type": "string"
                              },
                              "chain": {
                                "enum": [
                                  "ethereum",
                                  "base",
                                  "arbitrum",
                                  "optimism",
                                  "polygon"
                                ],
                                "type": "string"
                              },
                              "data": {
                                "maxLength": 8194,
                                "pattern": "^0x(?:[0-9a-fA-F]{2})*$",
                                "type": "string"
                              },
                              "id": {
                                "pattern": "^[a-zA-Z0-9_-]{1,64}$",
                                "type": "string"
                              },
                              "to": {
                                "pattern": "^0x[0-9a-fA-F]{40}$",
                                "type": "string"
                              },
                              "type": {
                                "const": "eth_call"
                              }
                            },
                            "required": [
                              "id",
                              "chain",
                              "type",
                              "to",
                              "data"
                            ],
                            "type": "object"
                          }
                        ]
                      },
                      "maxItems": 50,
                      "minItems": 1,
                      "type": "array"
                    },
                    "requestId": {
                      "description": "Generate a fresh UUIDv4 for each new request and retain it to recover the exact paid result. The Bazaar example UUID is illustrative; replace it before calling.",
                      "pattern": "^[0-9a-fA-F]{8}-[0-9a-fA-F]{4}-4[0-9a-fA-F]{3}-[89abAB][0-9a-fA-F]{3}-[0-9a-fA-F]{12}$",
                      "type": "string"
                    }
                  },
                  "required": [
                    "requestId",
                    "checks"
                  ],
                  "type": "object"
                },
                "bodyType": {
                  "enum": [
                    "json",
                    "form-data",
                    "text"
                  ],
                  "type": "string"
                },
                "method": {
                  "enum": [
                    "POST"
                  ],
                  "type": "string"
                },
                "type": {
                  "const": "http",
                  "type": "string"
                }
              },
              "required": [
                "type",
                "method",
                "bodyType",
                "body"
              ],
              "type": "object"
            },
            "output": {
              "properties": {
                "example": {
                  "description": "Illustrative five-chain snapshot response. Block heights and values in this example are placeholders; live values are returned from the RPC providers when the request runs.",
                  "properties": {
                    "expiresAt": {
                      "type": "string"
                    },
                    "recoveryUrl": {
                      "type": "string"
                    },
                    "requestId": {
                      "type": "string"
                    },
                    "results": {
                      "items": {
                        "properties": {
                          "blockNumber": {
                            "type": "string"
                          },
                          "chain": {
                            "type": "string"
                          },
                          "id": {
                            "type": "string"
                          },
                          "type": {
                            "type": "string"
                          },
                          "value": {}
                        },
                        "required": [
                          "id",
                          "chain",
                          "type",
                          "blockNumber",
                          "value"
                        ],
                        "type": "object"
                      },
                      "type": "array"
                    },
                    "snapshotBlocks": {
                      "additionalProperties": {
                        "type": "string"
                      },
                      "type": "object"
                    },
                    "verification": {
                      "type": "string"
                    }
                  },
                  "required": [
                    "requestId",
                    "results",
                    "snapshotBlocks",
                    "verification",
                    "recoveryUrl",
                    "expiresAt"
                  ],
                  "type": "object"
                },
                "type": {
                  "type": "string"
                }
              },
              "required": [
                "type"
              ],
              "type": "object"
            }
          },
          "required": [
            "input"
          ],
          "type": "object"
        }
      }
    }
  },
  "liveness": {
    "reliability": null
  },
  "verified": false,
  "featured": false,
  "provider": {
    "host": "evmstate.com",
    "manifest_name": "evmstate.com",
    "source": "cdp-mirror",
    "source_manifest_url": "https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources",
    "submitted_at": "2026-10-14T01:15:01.050Z"
  },
  "exampleResponse": {
    "example": {
      "expiresAt": "string",
      "recoveryUrl": "string",
      "requestId": "string",
      "results": [
        {
          "blockNumber": "string",
          "chain": "string",
          "id": "string",
          "type": "string",
          "value": null
        }
      ],
      "snapshotBlocks": {},
      "verification": "string"
    },
    "type": "string"
  }
}