Onchain Data for Tax Software

Expand your coverage in 2025 with enterprise-grade data for cross-chain tax reporting

Market-leading historical token price coverage across 50+ chains

Transaction history, asset deltas, and filters to isolate income events

Token balances and DeFi positions

NFT valuations, transfers, and sales

Save Development Time

Eliminate the need to build and maintain complex data indexing and parsing systems. Our API provides pre-processed, ready-to-use data across 50+ chains, saving you months of development time.

Industry-Leading Data Quality

Benefit from our 5+ years of experience building consumer-facing crypto products. The same high data quality standards that power our user-facing applications ensure reliability for your clients.

50+

Chains Supported

4.2M+

Tokens with Historical Prices

3.8M+

Price Sources

51.9M

Estimated NFT Valuations

Historical Price Data

Access historical prices for the broadest coverage of tokens on the market, essential for capital gains calculations.

Prices for over 4.2M tokens

Historical data at any timestamp

Based on real-time onchain markets

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{
  "data": {
    "fungibleToken": {
      "address": "0xbe19c96f5deec29a91ca84e0d038d4bb01d098cd",
      "symbol": "27 mgas/s",
      "name": "27 mgas/s",
      "decimals": 18,
      "imageUrlV2": "https://storage.googleapis.com/zapper-fi-assets/tokens/base/0xbe19c96f5deec29a91ca84e0d038d4bb01d098cd.png",
      "priceData": {
        "marketCap": 5445.198014774891,
        "price": 0.000005445198014774891,
        "priceChange5m": 0.2271658381141073,
        "priceChange1h": -0.5443291578127174,
        "priceChange24h": 5.6592786353360625,
        "volume24h": 2.49672532081604,
        "totalGasTokenLiquidity": 0.3708828870152529,
        "totalLiquidity": 662.7343396364256,
        "historicalPrice": {
          "price": 0.00000626961364413425,
          "timestamp": 1742227200000
        },
        "priceTicks": [
          {
            "open": 0.00000520483670022519,
            "median": 0.00000520483670022519,
            "close": 0.000005204316170715232,
            "timestamp": 1745348400000
          },
          {
            "open": 0.00000519351825883544,
            "median": 0.00000519351825883544,
            "close": 0.000005192998861269305,
            "timestamp": 1745348700000
          },
          {
            "open": 0.0000051924368363903575,
            "median": 0.0000051924368363903575,
            "close": 0.000005191917546975991,
            "timestamp": 1745349000000
          },
          {
            "open": 0.000005445198014774891,
            "median": 0.000005445198014774891,
            "close": 0.000005445198014774891,
            "timestamp": 1745437500000
          }
        ]
      }
    }
  }
}

Complete Transaction History

Access complete transaction histories with powerful filters and detailed asset movements for accurate reporting.

Filter transactions by tax year

Identify taxable events with category filters

Detailed asset deltas for every transaction

Account abstraction support

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{
  "data": {
    "transactionHistoryV2": {
      "edges": [
        {
          "node": {
            "methodSignature": "swapAndTransferUniswapV3Native((uint256,uint256,address,address,address,uint256,bytes16,address,bytes,bytes),uint24)",
            "methodSighash": "0x8bf122da",
            "transaction": {
              "blockNumber": 27161406,
              "gas": 306461,
              "gasPrice": "2426453",
              "hash": "0x98455ae7e6b236d71467f2f175ba5b876a764d4bd2eecac6f205e7178ded1831",
              "network": "BASE_MAINNET",
              "timestamp": 1741112159000,
              "nonce": 1958,
              "fromUser": {
                "address": "0x52c8ff44260056f896e20d8a43610dd88f05701b",
                "displayName": {
                  "value": "0xjasper.eth",
                  "source": "ENS"
                },
                "farcasterProfile": {
                  "fid": 177,
                  "username": "jasper"
                }
              },
              "toUser": {
                "address": "0x03059433bcdb6144624cc2443159d9445c32b7a8",
                "displayName": {
                  "value": "0x0305...b7a8",
                  "source": "ADDRESS"
                },
                "farcasterProfile": null
              }
            },
            "interpretation": {
              "processedDescription": "Swapped 0.0021 ETH for 4.455 USDC and transferred to 0x9b3a...4b30",
              "description": "Swapped $1 for $2 and transferred to $3",
              "descriptionDisplayItems": [
                {
                  "type": "token",
                  "tokenAddress": "0x0000000000000000000000000000000000000000",
                  "amountRaw": "2108250382006340",
                  "network": "BASE_MAINNET",
                  "tokenV2": {
                    "decimals": 18,
                    "symbol": "ETH",
                    "name": "Ether",
                    "imageUrlV2": "https://storage.googleapis.com/zapper-fi-assets/tokens/base/0x0000000000000000000000000000000000000000.png"
                  }
                },
                {
                  "type": "token",
                  "tokenAddress": "0x833589fcd6edb6e08f4c7c32d4f71b54bda02913",
                  "amountRaw": "4455000",
                  "network": "BASE_MAINNET",
                  "tokenV2": {
                    "decimals": 6,
                    "symbol": "USDC",
                    "name": "USD Coin",
                    "imageUrlV2": "https://storage.googleapis.com/zapper-fi-assets/tokens/base/0x833589fcd6edb6e08f4c7c32d4f71b54bda02913.png"
                  }
                }
              ]
            },
            "perspectiveDelta": {
              "tokenDeltasV2": {
                "edges": [
                  {
                    "node": {
                      "address": "0x0000000000000000000000000000000000000000",
                      "amount": -0.00210825038200634,
                      "amountRaw": "-2108250382006340",
                      "token": {
                        "symbol": "ETH",
                        "imageUrlV2": "https://storage.googleapis.com/zapper-fi-assets/tokens/base/0x0000000000000000000000000000000000000000.png"
                      }
                    }
                  }
                ]
              }
            }
          }
        }
      ]
    }
  }
}

Token Balances

Access token holdings across different networks with real-time computation built in.

Total portfolio value in USD

Native token balances across chains

Token metadata and prices

Network and account breakdowns

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{
  "data": {
    "portfolioV2": {
      "tokenBalances": {
        "totalBalanceUSD": 292328.8286857288,
        "byToken": {
          "totalCount": 1223,
          "edges": [
            {
              "node": {
                "symbol": "ETH",
                "tokenAddress": "0x0000000000000000000000000000000000000000",
                "balance": 17.286417826281596,
                "balanceUSD": 45317.035788310255,
                "price": 2621.54,
                "imgUrlV2": "https://storage.googleapis.com/zapper-fi-assets/tokens/base/0x0000000000000000000000000000000000000000.png",
                "name": "Ethereum",
                "network": {
                  "name": "Base"
                }
              }
            },
            {
              "node": {
                "symbol": "SYNDOG",
                "tokenAddress": "0x3d1d651761d535df881740ab50ba4bd8a2ec2c00",
                "balance": 30000000,
                "balanceUSD": 38615.1,
                "price": 0.00128717,
                "imgUrlV2": "https://storage.googleapis.com/zapper-fi-assets/tokens/base/0x3d1d651761d535df881740ab50ba4bd8a2ec2c00.png",
                "name": "Synthesizer Dog",
                "network": {
                  "name": "Base"
                }
              }
            },
            {
              "node": {
                "symbol": "BKIT",
                "tokenAddress": "0x262a9f4e84efa2816d87a68606bb4c1ea3874bf1",
                "balance": 28980487535.238518,
                "balanceUSD": 28654.60195290476,
                "price": 9.88755e-7,
                "imgUrlV2": "https://storage.googleapis.com/zapper-fi-assets/tokens/base/0x262a9f4e84efa2816d87a68606bb4c1ea3874bf1.png",
                "name": "Bangkit",
                "network": {
                  "name": "Base"
                }
              }
            }
          ]
        }
      }
    }
  }
}

DeFi Balances

View positions within onchain applications like lending protocols, DEXes, liquidity pools, and more.

App positions across protocols

Detailed protocol metadata

Position values and underlying tokens

Lent, borrowed, and staked assets

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{
  "data": {
    "portfolioV2": {
      "appBalances": {
        "totalBalanceUSD": 1788.726036163165,
        "byApp": {
          "totalCount": 15,
          "edges": [
            {
              "node": {
                "balanceUSD": 77.4990347567012,
                "app": {
                  "displayName": "Morpho",
                  "imgUrl": "https://storage.googleapis.com/zapper-fi-assets/apps%2Fmorpho.png",
                  "description": "Earn yield, borrow assets, curate markets and vaults.",
                  "slug": "morpho",
                  "url": "https://morpho.org/",
                  "category": {
                    "name": "DeFi"
                  }
                },
                "network": {
                  "name": "Base",
                  "slug": "base",
                  "chainId": 8453,
                  "evmCompatible": true
                },
                "balances": {
                  "edges": [
                    {
                      "node": {
                        "type": "app-token",
                        "address": "0x23479229e52ab6aad312d0b03df9f33b46753b5e",
                        "symbol": "ionicUSDC",
                        "balance": "37.03453811510863",
                        "balanceUSD": 37.373950883832,
                        "price": 1.009164769562798,
                        "tokens": [
                          {
                            "type": "base-token",
                            "address": "0x833589fcd6edb6e08f4c7c32d4f71b54bda02913",
                            "balance": "37.378212",
                            "balanceUSD": 37.373950883832,
                            "price": 0.999886,
                            "symbol": "USDC"
                          }
                        ]
                      }
                    }
                  ]
                }
              }
            }
          ]
        }
      }
    }
  }
}

Portfolio Totals

Get consolidated portfolio values with detailed breakdowns across networks and asset types.

Total portfolio value across all assets

Network distribution breakdown

Token vs DeFi vs NFT allocation

Account-level contributions

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{
  "data": {
    "portfolioV2": {
      "tokenBalances": {
        "totalBalanceUSD": 191519.4268333953,
        "byNetwork": {
          "edges": [
            {
              "node": {
                "network": {
                  "name": "Base",
                  "slug": "base",
                  "chainId": 8453
                },
                "balanceUSD": 187210.46140590182
              }
            },
            {
              "node": {
                "network": {
                  "name": "Ethereum",
                  "slug": "ethereum",
                  "chainId": 1
                },
                "balanceUSD": 712.0326101880804
              }
            }
          ]
        }
      },
      "appBalances": {
        "totalBalanceUSD": 2354.7695934482635,
        "byNetwork": {
          "edges": [
            {
              "node": {
                "network": {
                  "name": "Base",
                  "slug": "base",
                  "chainId": 8453
                },
                "balanceUSD": 2337.336868521915
              }
            },
            {
              "node": {
                "network": {
                  "name": "Ethereum",
                  "slug": "ethereum",
                  "chainId": 1
                },
                "balanceUSD": 16.6343219463486
              }
            }
          ]
        }
      },
      "nftBalances": {
        "totalBalanceUSD": 164.6907089747224
      }
    }
  }
}

NFT Valuations

Complete NFT data with estimated valuations, and sale history.

Trait-based valuation model

Floor prices and offers from top marketplaces

Metadata, transfers, and sales history

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{
  "data": {
    "nftCollections": [
      {
        "name": "onchain gaias",
        "description": "https://warpcast.com/~/channel/ogs",
        "network": "BASE_MAINNET",
        "address": "0xa449b4f43d9a33fcdcf397b9cc7aa909012709fd",
        "nftStandard": "ERC_721",
        "supply": "5222",
        "totalSupply": "5011",
        "circulatingSupply": "5222",
        "totalCirculatingSupply": "5011",
        "holdersCount": "2447",
        "marketCap": "965.21882",
        "floorPrice": {
          "valueUsd": 359.59314550056,
          "valueWithDenomination": 0.19262,
          "denomination": {
            "network": "base",
            "symbol": "ETH",
            "address": "0x0000000000000000000000000000000000000000"
          }
        },
        "topOfferPrice": {
          "valueUsd": 952.09481988,
          "valueWithDenomination": 0.51,
          "denomination": {
            "network": "base",
            "symbol": "ETH",
            "address": "0x0000000000000000000000000000000000000000"
          }
        },
        "floorPriceSourceMarketPlace": "OPENSEA",
        "topOfferSourceMarketPlace": "OPENSEA",
        "medias": {
          "logo": {
            "original": "https://zapper.xyz/z/images/?url=https%3A%2F%2Fstorage.googleapis.com%2Fzapper-fi-assets%2Fnfts%2Fcollections%2Fbase%2F0xa449b4f43d9a33fcdcf397b9cc7aa909012709fd%2Flogo.png&checksum=a34b1",
            "thumbnail": "https://zapper.xyz/z/images/?url=https%3A%2F%2Fstorage.googleapis.com%2Fzapper-fi-assets%2Fnfts%2Fcollections%2Fbase%2F0xa449b4f43d9a33fcdcf397b9cc7aa909012709fd%2Flogo.png&width=100&checksum=be3af",
            "medium": "https://zapper.xyz/z/images/?url=https%3A%2F%2Fstorage.googleapis.com%2Fzapper-fi-assets%2Fnfts%2Fcollections%2Fbase%2F0xa449b4f43d9a33fcdcf397b9cc7aa909012709fd%2Flogo.png&width=250&checksum=5532f",
            "large": "https://zapper.xyz/z/images/?url=https%3A%2F%2Fstorage.googleapis.com%2Fzapper-fi-assets%2Fnfts%2Fcollections%2Fbase%2F0xa449b4f43d9a33fcdcf397b9cc7aa909012709fd%2Flogo.png&width=500&checksum=16f2c",
            "blurhash": "U142SUt700S2XTWXnhsm4Tax?wjbwHo0S$S4",
            "width": 512,
            "height": 365,
            "mimeType": "image/png",
            "fileSize": 63028
          },
          "banner": {
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            "thumbnail": "https://zapper.xyz/z/images/?url=https%3A%2F%2Fstorage.googleapis.com%2Fzapper-fi-assets%2Fnfts%2Fcollections%2Fbase%2F0xa449b4f43d9a33fcdcf397b9cc7aa909012709fd%2Fbanner.gif&width=100&checksum=7b6e7",
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            "blurhash": "UDHKrB%PnMtA~B-rkEoI00M_bcW9VqInNFa$",
            "width": 1000,
            "height": 714,
            "mimeType": "image/gif",
            "fileSize": 5691323
          }
        },
        "socialLinks": [
          {
            "name": "opensea",
            "label": "Opensea",
            "url": "https://opensea.io/collection/onchain-gaias",
            "logoUrl": "https://storage.googleapis.com/zapper-fi-assets/logos/opensea.png"
          },
          {
            "name": "website",
            "label": "Website",
            "url": "https://warpcast.com/~/channel/ogs",
            "logoUrl": "https://storage.googleapis.com/zapper-fi-assets/logos/website.png"
          },
          {
            "name": "twitter",
            "label": "Twitter",
            "url": "https://twitter.com/onchaingaias",
            "logoUrl": "https://storage.googleapis.com/zapper-fi-assets/logos/twitter.png"
          }
        ],
        "nfts": {
          "edges": [
            {
              "node": {
                "id": "TmZ0VG9rZW4tODk2OTM5NjI4",
                "tokenId": "0",
                "name": "onchain gaias",
                "description": "https://warpcast.com/~/channel/ogs",
                "holdersCount": "1",
                "supply": "1",
                "circulatingSupply": "1",
                "mediasV3": {
                  "images": {
                    "edges": [
                      {
                        "node": {
                          "original": "https://zapper.xyz/z/images/?url=https%3A%2F%2Fstorage.googleapis.com%2Fzapper-fi-assets%2Fnfts%2Fmedias%2F81e1e8c175f784916c3af5d8d98c7c437955d31dd2696bc553da2948a60c7f6a.gif&checksum=5a066",
                          "thumbnail": "https://zapper.xyz/z/images/?url=https%3A%2F%2Fstorage.googleapis.com%2Fzapper-fi-assets%2Fnfts%2Fmedias%2F81e1e8c175f784916c3af5d8d98c7c437955d31dd2696bc553da2948a60c7f6a.gif&width=100&checksum=4c8b5",
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                          "blurhash": "UDHKrB%ii]tA~B-rf-oI00M_f,W9Z}InNFa$",
                          "width": 1000,
                          "height": 714,
                          "mimeType": "image/gif",
                          "fileSize": 14730609
                        }
                      }
                    ],
                    "pageInfo": {
                      "hasNextPage": false,
                      "endCursor": "MA=="
                    }
                  },
                  "animations": {
                    "edges": [],
                    "pageInfo": {
                      "hasNextPage": false,
                      "endCursor": null
                    }
                  },
                  "audios": {
                    "edges": []
                  }
                },
                "traits": [],
                "estimatedValue": {
                  "valueUsd": 952.9819810845909,
                  "valueWithDenomination": 0.5104752175990185,
                  "denomination": {
                    "network": "base",
                    "address": "0x0000000000000000000000000000000000000000",
                    "symbol": "ETH",
                    "imageUrl": "https://storage.googleapis.com/zapper-fi-assets/tokens/base/0x0000000000000000000000000000000000000000.png"
                  }
                },
                "lastSale": {
                  "valueUsd": 1493.4820704,
                  "valueWithDenomination": 0.8,
                  "denomination": {
                    "network": "base",
                    "address": "0x0000000000000000000000000000000000000000",
                    "symbol": "ETH",
                    "imageUrl": "https://storage.googleapis.com/zapper-fi-assets/tokens/base/0x0000000000000000000000000000000000000000.png"
                  }
                },
                "transfers": {
                  "edges": [
                    {
                      "node": {
                        "timestamp": 1714345783,
                        "txHash": "0x115e56575c3b881706ffb18e30990ca4353aef350f536a5773b0e3ce6a60cb78",
                        "payments": []
                      },
                      "heldForInSeconds": 27294913
                    },
                    {
                      "node": {
                        "timestamp": 1713467079,
                        "txHash": "0x17faaa84b6958ed8369c16af5b43900c7e178ac1dfed833d5427450ff353df19",
                        "payments": []
                      },
                      "heldForInSeconds": 878704
                    }
                  ],
                  "pageInfo": {
                    "hasNextPage": true,
                    "endCursor": "MTcxMzQ2NzA3OToxNTUxNDQyODgy"
                  }
                }
              },
              "cursor": "MC0wLjgtMC41MTA0NzUyMTc1OTkwMTg1LW51bGwtODk2OTM5NjI4"
            }
          ],
          "pageInfo": {
            "hasNextPage": true,
            "endCursor": "MC0wLjgtMC41MTA0NzUyMTc1OTkwMTg1LW51bGwtODk2OTM5NjI4"
          }
        },
        "holders": {
          "totalCount": 2447,
          "edges": [
            {
              "node": {
                "id": "TmZ0Q29sbGVjdGlvbkhvbGRlci0xNzE1MzcxMTg4",
                "account": {
                  "id": "QWNjb3VudC0weDc1ZDRiZGJmNjU5M2VkNDYzZTk2MjU2OTQyNzJhMGZmOWE2ZDM0NmY=",
                  "address": "0x75d4bdbf6593ed463e9625694272a0ff9a6d346f",
                  "displayName": {
                    "value": "xmon.eth",
                    "source": "ENS"
                  },
                  "farcasterProfile": {
                    "fid": 216983,
                    "username": "xmon.eth",
                    "metadata": {
                      "displayName": "0xmons",
                      "imageUrl": "https://i.imgur.com/Xei6cvg.png",
                      "description": "-w-"
                    }
                  }
                },
                "holdCount": "51",
                "holdTotalCount": "51"
              },
              "cursor": "NTEtMTcxNTM3MTE4OA=="
            },
            {
              "node": {
                "id": "TmZ0Q29sbGVjdGlvbkhvbGRlci0xNzIwODIwMDUw",
                "account": {
                  "id": "QWNjb3VudC0weDNmZDIyYzQyY2FmYThmMDlkZjk1OWM4NTNmNzBmOWNlZDg0MDk5Njc=",
                  "address": "0x3fd22c42cafa8f09df959c853f70f9ced8409967",
                  "displayName": {
                    "value": "0x3fd2...9967",
                    "source": "ADDRESS"
                  },
                  "farcasterProfile": null
                },
                "holdCount": "50",
                "holdTotalCount": "50"
              },
              "cursor": "NTAtMTcyMDgyMDA1MA=="
            }
          ],
          "pageInfo": {
            "hasNextPage": true,
            "endCursor": "NTAtMTcyMDgyMDA1MA=="
          }
        },
        "events": {
          "edges": [
            {
              "node": {
                "timestamp": 1741616621,
                "txHash": "0x4d563ea3494687834f81f00a08e4d0b91e3e9de89477d64daaa5ba66eb7cb714",
                "fromAccount": {
                  "address": "0xc59416ed0833ce6002a8fa15917c4bf5c2350589",
                  "displayName": {
                    "value": "weeb.eth"
                  }
                },
                "toAccount": {
                  "address": "0xef4e9bdd3f72a19acdb73ece01bb031c7bb1f750",
                  "displayName": {
                    "value": "0xef4e...f750"
                  }
                },
                "token": {
                  "tokenId": "1837",
                  "name": "onchain gaias"
                },
                "payments": [
                  {
                    "tokenValueUSD": "360.23636376953124",
                    "tokenValueETH": "0.179"
                  }
                ]
              }
            },
            {
              "node": {
                "timestamp": 1741616621,
                "txHash": "0x4d563ea3494687834f81f00a08e4d0b91e3e9de89477d64daaa5ba66eb7cb714",
                "fromAccount": {
                  "address": "0xc59416ed0833ce6002a8fa15917c4bf5c2350589",
                  "displayName": {
                    "value": "weeb.eth"
                  }
                },
                "toAccount": {
                  "address": "0x90d33403683ac39225928a1c6feee1011d568e37",
                  "displayName": {
                    "value": "0x90d3...8e37"
                  }
                },
                "token": {
                  "tokenId": "3490",
                  "name": "onchain gaias"
                },
                "payments": [
                  {
                    "tokenValueUSD": "342.1239208984375",
                    "tokenValueETH": "0.17"
                  }
                ]
              }
            }
          ],
          "pageInfo": {
            "hasNextPage": true,
            "endCursor": "MTc0MTYxNjYyMQ=="
          }
        }
      }
    ]
  }
}

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