Claude Code

The go-to coding agent for many developers

Overview

Claude Code is powered by Anthropic’s Claude models and is the go-to coding agent for many developers. It offers excellent performance across a wide range of tasks.

Latest Models

• Claude 4.5 Sonnet - Latest high-performance model
• Claude 4.5 Opus - Most capable model with enhanced reasoning

Authentication

Claude Code supports three authentication methods:

Anthropic API Key

Pay-as-you-go API access

1. Get an API key at Anthropic Console
2. In Blocks Dashboard, go to Dashboard → Agents
3. Select Claude Code and choose “API Key”
4. Paste your API key (starts with sk-ant-)

Anthropic Subscription

Connect your Claude Pro/Team subscription

1. Go to Blocks Dashboard → Dashboard → Agents
2. Select Claude Code and choose “Connect Subscription”
3. Authorize Blocks to use your Anthropic subscription

This uses your subscription credits instead of pay-as-you-go billing.

AWS Bedrock

Enterprise AWS Bedrock access

1. Set up Claude models in AWS Bedrock
2. Generate Bedrock API credentials
3. In Blocks Dashboard → Dashboard → Agents → Claude Code
4. Select “AWS Bedrock” and enter your credentials

Setting as Default

To use Claude Code automatically for all requests:

1. Go to Dashboard → Agents
2. Select “Set as default agent” from Claude Code’s dropdown menu

Learn more: Setting Your Default Agent

Using Claude Code

Once configured, Claude Code is used automatically if it’s your default agent:

@blocks can you review this code?

Or use the /claude slash command to use it specifically:

@blocks /claude review this PR for security issues

Best For

• Code reviews and analysis
• Complex problem solving
• Architecture planning
• Security analysis
• Detailed explanations
• Refactoring

Cost

Claude Code uses your Anthropic API key or subscription:

• Check pricing at Anthropic Pricing
• Monitor usage in Anthropic Console
• API usage is billed by Anthropic based on tokens

Next Steps

Agents Overview

Compare all available agents

Set Default Agent

Configure your default agent

Codex Agent

Learn about Codex

Gemini CLI

Explore Gemini CLI (experimental)