Tokens

Get ERC20-Token TotalSupply by ContractAddress

Returns the current amount of an ERC-20 token in circulation.

https://api.basescan.org/api
   ?module=stats
   &action=tokensupply
   &contractaddress=0xa3044b2a9ae8073ecc4e277f6246b3b00fc93553
   &apikey=YourApiKeyToken

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Request

Query Parameters

Parameter	Description
contractaddress	the contract address of the ERC-20 token

Response

Sample Response

{
   "status":"1",
   "message":"OK",
   "result":"1000000000000000000000000000000000"
}

📈 Tip : The result is returned in the token's smallest decimal representation.

Eg. a token with a balance of 215.241526476136819398 and 18 decimal places will be returned as 215241526476136819398

Get ERC20-Token Account Balance for TokenContractAddress

Returns the current balance of an ERC-20 token of an address.

https://api.basescan.org/api
   ?module=account
   &action=tokenbalance
   &contractaddress=0xa3044b2a9ae8073ecc4e277f6246b3b00fc93553
   &address=0x171f87d13c5819a819702637f2120db793f7bcca
   &tag=latest&apikey=YourApiKeyToken

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Get Historical ERC-20 Token TotalSupply by ContractAddress & BlockNo

Returns the historical amount of a ERC-20 token in circulation at a certain block height.

📝 Note : This endpoint is throttled to 2 calls/second regardless of API Pro tier.

https://api.basescan.org/api
   ?module=stats
   &action=tokensupplyhistory
   &contractaddress=0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913
   &blockno=10000000
   &apikey=YourApiKeyToken

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Request

Query Parameters

Parameter	Description
contractaddress	the contract address of the ERC-20 token
blockno	the integer block number to check total supply for eg. 4000000

Response

Sample Response

{
   "status":"1",
   "message":"OK",
   "result":"205971585207240"
}

📈 Tip : The result is returned in the token's smallest decimal representation.

Eg. a token with a balance of 215.241526476136819398 and 18 decimal places will be returned as 215241526476136819398

Get Historical ERC-20 Token Account Balance by ContractAddress & BlockNo

Returns the balance of a ERC-20 token of an address at a certain block height.

📝 Note : This endpoint is throttled to 2 calls/second regardless of API Pro tier.

https://api.basescan.org/api
   ?module=account
   &action=tokenbalancehistory
   &contractaddress=0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913
   &address=0x1d147c866182f072c821eb1fa9817e87b9547861
   &blockno=11801569
   &apikey=YourApiKeyToken

Parameter	Description
contractaddress	the contract address of the ERC-20 token
blockno	the integer block number to check total supply for eg. 4000000
Address	Target address

Get Address ERC-20 Token Holdings

Return the current ERC20 token holders and number of tokens held.

https://api.basescan.org/api
    ?module=account
    &action=addresstokenbalance
    &address=0xFd92F4e91d54B9EF91cc3f97C011a6aF0C2a7eDa
    &page=1
    &offset=2
    &apikey=YourApikeyToken

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Request

Query Parameters

Parameter	Description
address	the string representing the address to check for Token Holdings
page	the integer page number, if pagination is enabled
offset	the number of transactions displayed per page

Response

Sample Response

{
  "status": "1",
  "message": "OK",
  "result": [
    {
      "TokenAddress": "0xc088797eaee27e0b1b80cd0ccc02b5792182ba6d",
      "TokenName": "BASELOL",
      "TokenSymbol": "BASELOL",
      "TokenQuantity": "4000000000000000000000",
      "TokenDivisor": "18"
    },
    {
      "TokenAddress": "0x599005e69d937c2e30603d3571347f1f705ebf3a",
      "TokenName": "Ether Pulse",
      "TokenSymbol": "ETPS",
      "TokenQuantity": "66870216684000000000",
      "TokenDivisor": "12"
    }
  ]
}

Get Address ERC-721 Token Holding

Return the current ERC20 token holders and number of tokens held.

https://api.basescan.org/api
    ?module=account
    &action=addresstokennftbalance
    &address=0x64baeb02876aa58078aa25c1c43b7a5492873559
    &page=1
    &offset=2
    &apikey=YourApiKeyToken

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Request

Query Parameters

Parameter	Description
address	the string representing the address to check for Token Holdings
page	the integer page number, if pagination is enabled
offset	the number of transactions displayed per page

Response

Sample Response

{
  "status": "1",
  "message": "OK",
  "result": [
    {
      "TokenAddress": "0x85e7df5708902be39891d59abef8e21ede91e8bf",
      "TokenName": "Degen Haberdashers",
      "TokenSymbol": "DGNHTS",
      "TokenQuantity": "8"
    },
    {
      "TokenAddress": "0x10e65619e75214cc6e8c2522a83acf8636ce9dfd",
      "TokenName": "Degens",
      "TokenSymbol": "DEGEN",
      "TokenQuantity": "100"
    }
  ]
}

Get Address ERC721 Token Inventory By Contract Address

https://api.basescan.org/api
    ?module=account
    &action=addresstokennftinventory
    &address=0x64baeb02876aa58078aa25c1c43b7a5492873559
    &contractaddress=0x85e7df5708902be39891d59abef8e21ede91e8bf
    &page=1
    &offset=20
    &apikey=YourApiKeyToken

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Request

Query Parameters

Parameter	Description
address	the string representing the address to check for inventory
contractaddress	the contract address of the ERC-721 token
page	the integer page number, if pagination is enabled
offset	the number of transactions displayed per page

Response

Sample Response

{
  "status": "1",
  "message": "OK",
  "result": [
    {
      "TokenAddress": "0x85e7df5708902be39891d59abef8e21ede91e8bf",
      "TokenId": "454"
    },
    {
      "TokenAddress": "0x85e7df5708902be39891d59abef8e21ede91e8bf",
      "TokenId": "355"
    },
    {
      "TokenAddress": "0x85e7df5708902be39891d59abef8e21ede91e8bf",
      "TokenId": "486"
    },
    {
      "TokenAddress": "0x85e7df5708902be39891d59abef8e21ede91e8bf",
      "TokenId": "588"
    },
    {
      "TokenAddress": "0x85e7df5708902be39891d59abef8e21ede91e8bf",
      "TokenId": "338"
    },
    {
      "TokenAddress": "0x85e7df5708902be39891d59abef8e21ede91e8bf",
      "TokenId": "103"
    },
    {
      "TokenAddress": "0x85e7df5708902be39891d59abef8e21ede91e8bf",
      "TokenId": "405"
    },
    {
      "TokenAddress": "0x85e7df5708902be39891d59abef8e21ede91e8bf",
      "TokenId": "683"
    }
  ]
}

Get Token Holder List by Contract Address

Return the current ERC20 token holders and number of tokens held.

https://api.basescan.org/api
   ?module=token
   &action=tokenholderlist
   &contractaddress=0x50c5725949A6F0c72E6C4a641F24049A917DB0Cb&
   &page=1
   &offset=10
   &apikey=YourApiKeyToken 

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Request

Query Parameters

Parameter	Description
contractaddress	the contract address of the ERC-20 token
page	the integer page number, if pagination is enabled
offset	the number of transactions displayed per page

Response

Sample Response

{
  "status": "1",
  "message": "OK",
  "result": [
    {
      "TokenHolderAddress": "0xba12222222228d8ba445958a75a0704d566bf2c8",
      "TokenHolderQuantity": "4573970636171019544227"
    },
    {
      "TokenHolderAddress": "0x1ded454abc7e02119adf09860954144847c9f619",
      "TokenHolderQuantity": "10000000000000000"
    }
  ]
}

Get Token Info by ContractAddress

Returns project information and social media links of an ERC-20/ERC-721 token.

📝 Note : This endpoint is throttled to 2 calls/second regardless of API Pro tier.

https://api.basescan.org/api
   ?module=token
   &action=tokeninfo
   &contractaddress=0x50c5725949A6F0c72E6C4a641F24049A917DB0Cb
   &apikey=YourApiKeyToken

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Request

Query Parameters

Parameter	Description
contractaddress	the contract address of the ERC-20/ERC-721 token to retrieve token info

Response

Sample Response

{
  "status": "1",
  "message": "OK",
  "result": [
    {
      "contractAddress": "0x50c5725949a6f0c72e6c4a641f24049a917db0cb",
      "tokenName": "Dai Stablecoin",
      "symbol": "DAI",
      "divisor": "18",
      "tokenType": "ERC20",
      "totalSupply": "2921565106401030186792291",
      "blueCheckmark": "true",
      "description": "",
      "website": "https://makerdao.com/",
      "email": "[e-mail]",
      "blog": "https://blog.makerdao.com/",
      "reddit": "https://www.reddit.com/r/MakerDAO/",
      "slack": "https://chat.makerdao.com/",
      "facebook": "",
      "twitter": "https://twitter.com/MakerDAO",
      "bitcointalk": "",
      "github": "",
      "telegram": "https://t.me/makerdaoOfficial",
      "wechat": "",
      "linkedin": "",
      "discord": "https://discord.com/invite/RBRumCpEDH",
      "whitepaper": "http://docs.makerdao.com/",
      "tokenPriceUSD": "0.9999334003"
    }
  ]
}