How to Access Base API

Step 1: To access Base, use the native access endpoint with the /http-rpc at the end.

Network: Base Mainnet
Request Type: POST

https://svc.blockdaemon.com/base/mainnet/native/http-rpc

Network: Base Testnet
Request Type: POST

https://svc.blockdaemon.com/base/testnet/native/http-rpc

To access the available Optimism methods, use the native access endpoint with /op-http-rpc at the end.

https://svc.blockdaemon.com/base/testnet/native/op-http-rpc

Step 2: You should authorize your request. Learn more: Authentication Guide

Step 3: Specify a Base method in the request body:

{
    "jsonrpc": "2.0",
    "id": 1,
    "method": "YOUR_METHOD",
    "params": []
}

Example Request

Here is a cURL example for using eth_blockNumber to get the current block number in Base Testnet:

curl -X \
POST https://svc.blockdaemon.com/base/testnet/native/http-rpc \
-H 'Authorization: Bearer YOUR_API_KEY' \
-H 'Content-Type: application/json' \
-d '{"jsonrpc": "2.0", "id": 1, "method": "eth_blockNumber", "params": []}'

The following is a typical response you will get:

{
    "jsonrpc": "2.0",
    "id": 1,
    "result": "0x17ba022"
}

Example Request

👋 Need Help?