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

Read Documentation Try it now

{
  "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

Read Documentation Try it now

{
  "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

Read Documentation Try it now

{
  "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

Read Documentation Try it now

{
  "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

Read Documentation Try it now

{
  "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

Read Documentation Try it now

{
  "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$S4",
            "width": 512,
            "height": 365,
            "mimeType": "image/png",
            "fileSize": 63028
          },
          "banner": {
            "original": "https://zapper.xyz/z/images/?url=https%3A%2F%2Fstorage.googleapis.com%2Fzapper-fi-assets%2Fnfts%2Fcollections%2Fbase%2F0xa449b4f43d9a33fcdcf397b9cc7aa909012709fd%2Fbanner.gif&checksum=d12d4",
            "thumbnail": "https://zapper.xyz/z/images/?url=https%3A%2F%2Fstorage.googleapis.com%2Fzapper-fi-assets%2Fnfts%2Fcollections%2Fbase%2F0xa449b4f43d9a33fcdcf397b9cc7aa909012709fd%2Fbanner.gif&width=100&checksum=7b6e7",
            "medium": "https://zapper.xyz/z/images/?url=https%3A%2F%2Fstorage.googleapis.com%2Fzapper-fi-assets%2Fnfts%2Fcollections%2Fbase%2F0xa449b4f43d9a33fcdcf397b9cc7aa909012709fd%2Fbanner.gif&width=250&checksum=23eb1",
            "large": "https://zapper.xyz/z/images/?url=https%3A%2F%2Fstorage.googleapis.com%2Fzapper-fi-assets%2Fnfts%2Fcollections%2Fbase%2F0xa449b4f43d9a33fcdcf397b9cc7aa909012709fd%2Fbanner.gif&width=500&checksum=a6a96",
            "blurhash": "UDHKrB%PnMtA~B-rkEoI00M_bcW9VqInNFa$",
            "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",
                          "medium": "https://zapper.xyz/z/images/?url=https%3A%2F%2Fstorage.googleapis.com%2Fzapper-fi-assets%2Fnfts%2Fmedias%2F81e1e8c175f784916c3af5d8d98c7c437955d31dd2696bc553da2948a60c7f6a.gif&width=250&checksum=181a7",
                          "large": "https://zapper.xyz/z/images/?url=https%3A%2F%2Fstorage.googleapis.com%2Fzapper-fi-assets%2Fnfts%2Fmedias%2F81e1e8c175f784916c3af5d8d98c7c437955d31dd2696bc553da2948a60c7f6a.gif&width=500&checksum=5db86",
                          "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=="
          }
        }
      }
    ]
  }
}

Ready to build with our API?

If you need help with implementation or have other questions our team is here to help.

Book a Call