Sending your first bundle

To quickly start sending bundles, try the CLI client in our searcher-examples repo.

Prerequisites:

1. Ensure your environment is set up as described in the Getting Started guide

2. Set up the searcher-examples repo

3. Run the Searcher CLI example

Using the gRPC Endpoint:

1. Without Authentication (Default):

   • Follow the example code without the auth key to access the block engine.

2. With Authentication (Using approved pubkey):

   • The block engine uses a challenge-response authentication mechanism with messages signed by a local Solana keypair.

   • This local keypair shouldn't contain funds and doesn't need to be related to the keypair you use to sign transactions or submit bundles.

For default rate limits, there is no difference between using authentication and not using authentication.

Note: A sample TypeScript client is available at Jito Labs GitHub.