Tool Integration Options for Claude Code

Overview

Claude Code supports multiple approaches for extending functionality with custom tools and commands. Choose the method that best fits your use case and technical requirements.

Option 1: MCP (Model Context Protocol) Servers

Best for: Complex tools, structured data exchange, persistent state, standardized interfaces

Setup: Configure MCP servers in Claude Code settings file with server definitions

Advantages:

• Robust protocol designed for AI tool integration
• Handles complex interactive workflows
• Maintains state between calls
• Access to community-built servers

Use cases: Database connections, API integrations, advanced file operations, web browsing tools

Option 2: CLAUDE.md Documentation

Best for: Existing bash commands, simple scripts, custom utilities

Setup: Document available commands directly in your project’s CLAUDE.md file

Advantages:

• Simple setup with no configuration files
• Works with any existing command-line tool
• Immediate availability after documentation
• Easy to maintain and update

Use cases: Weather scripts, custom build tools, system utilities, project-specific commands

Option 3: Slash Commands

Best for: Reusable prompt templates and workflows

Setup: Create custom slash commands as saved prompt templates

Features:

• Can include specific bash script documentation with parameters
• Supports template arguments and variables
• Reusable across different contexts
• Can combine multiple tool approaches

Use cases: Complex workflows, standardized processes, frequently-used command sequences

Recommendation

For most custom tools and scripts, start with CLAUDE.md documentation for simplicity. Upgrade to MCP servers when you need advanced features or structured data handling. Use slash commands to package complete workflows that might use multiple tools together.