Get Started

Read, write, and deploy smart contracts on any EVM compatible blockchain.

Read from Contracts

You can efficiently read data from multiple functions or contracts in a single request.

Request

POST


fetch("https://api.thirdweb.com/v1/contracts/read", {
  method: "POST",
  headers: {
    "x-secret-key": "<your-project-secret-key>",
  },
  body: {
    calls: [
      {
        contractAddress: "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        method: "function name() view returns (string)",
      },
      {
        contractAddress: "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        method: "function totalSupply() returns (uint256)",
      },
      {
        contractAddress: "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        method: "function balanceOf(address) returns (uint256)",
        params: ["0x742d35Cc6634C0532925a3b8D43C67B8c8B3E9C6"],
      },
    ],
    chainId: 8453,
  },
});

Response


{
  "result": [
    {
      "success": true,
      "data": "value",
      "error": "string"
    }
  ]
}

Write to Contracts

You can write multiple functions to multiple contracts on the same chain in a single request atomically, which will result in a single transaction for optimal gas efficiency.

Request

POST

/v1/contracts/write


fetch("https://api.thirdweb.com/v1/contracts/write", {
  method: "POST",
  headers: {
    "x-secret-key": "<your-project-secret-key>",
  },
  body: {
    calls: [
      {
        contractAddress: "0xe352Cf5f74e3ACfd2d59EcCee6373d2Aa996086e",
        method: "function approve(address spender, uint256 amount)",
        params: [
          "0x4fA9230f4E8978462cE7Bf8e6b5a2588da5F4264",
          1000000000,
        ],
      },
    ],
    chainId: 84532,
    from: "0x1234567890123456789012345678901234567890",
  },
});

Response


{
  "result": {
    "transactionIds": [
      "string"
    ]
  }
}

Going further

Explore Full API References

For comprehensive guides on implementing the full thirdweb SDK, explore our language-specific documentation:

Get Started

Read from Contracts

Request

Response

Write to Contracts

Request

Response

Going further

Explore Full API References

TypeScript

React

React Native

DotNet

Unity

Unreal Engine

Request

Response

Request

Response