Claude Code

Built-in

Anthropic's coding agent. Blueprint Stack communicates with Claude Code through the claude-code-acp adapter, which wraps the CLI in a JSON-RPC interface over stdio. Supports session resume, extended thinking, streaming, and auto-detection from PATH.

INSTALLATION

1. Install Claude Code CLI

# macOS / Linux

curl -fsSL https://claude.ai/install.sh | bash

# Windows

npm install -g @anthropic-ai/claude-code

2. Install ACP adapter

npm install -g @zed-industries/claude-code-acp

The ACP adapter wraps the Claude Code CLI in a JSON-RPC interface that Blueprint Stack communicates with. The executable name is claude-code-acp.

3. Authenticate

claude auth login

This opens a browser window to authenticate with your Anthropic account. Alternatively, set the ANTHROPIC_API_KEY environment variable.

4. Verify installation

claude --version && claude-code-acp --help

Both commands should succeed. If claude-code-acp is not found, ensure your npm global bin directory is in your PATH.

SUPPORTED_MODELS

Claude Sonnet 4Default. Fast responses with strong tool use.

Claude Opus 4Extended thinking enabled. Highest quality reasoning for complex tasks.

Model selection is determined by the Claude Code CLI based on your account tier and configuration.

FEATURES

- Session resume -- Conversations persist across tab closes. Reopen a tab and continue where you left off.

- Extended thinking -- Claude Opus 4 can use a thinking step before responding, improving accuracy on complex tasks.

- Streaming -- Responses stream token-by-token into the chat panel.

- Auto-detection -- Blueprint Stack automatically detects the claude-code-acp executable from your PATH, npm global bin, bun, cargo, volta, fnm, asdf, mise, scoop, and Homebrew directories.

REQUIREMENTS

- Node.js 18+

- Anthropic account with API access or Claude Pro/Team subscription

- Claude Code CLI installed (claude)

- ACP adapter installed globally (claude-code-acp)