Remix Agent Button First, select an agent from the dropdown at the top. While editing an agent, you can explore the hub and click “Add Block” from a block page to add it to your agent. For blocks that require secret values like API keys, you will see a small notification on the block’s tile in the sidebar that will indicate if action is needed. To delete a block, click the trash icon. If a block you want to use does not exist yet, you can create a new block. When you are done editing, click “Publish” to publish a new version of the agent. Click “Open VS Code” or “Open JetBrains” to open your IDE for using the agent.