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connect-mcp-server

Guide for connecting MCP (Model Context Protocol) servers to Claude Code with HTTP, stdio, and SSE transports. Covers installation, configuration, authentication, environment variables, and security. Use when the user wants to connect MCP servers, add integrations, configure external services, or mentions MCP, servers, integrations, or external tools.

16starsUpdated 3/19/2026
MCP ToolsData Science & MLCode Review#integration#external-services#mcp#code-review#python#javascript

Security Assessment

Critical Risk(20/100)

Detected risks:

Persistence([SKILL.md] .bashrc, [SKILL.md] .zshrc)
Secret Exposure([SKILL.md] API_KEY=, [SKILL.md] TOKEN=, [SKILL.md] TOKEN =)
Security Score20/100

About connect-mcp-server

The `connect-mcp-server` skill enables seamless integration of MCP (Model Context Protocol) servers with Claude Code, providing a standardized method to connect AI assistants to external services and data sources. This skill addresses the challenge of accessing and managing tools, resources, and prompts from multiple platforms without requiring complex manual configurations. By supporting HTTP, stdio, and (deprecated) SSE transports, it allows users to connect both local and remote servers efficiently, streamlining interactions with APIs, databases, and productivity tools.

Key features of this skill include flexible transport options, allowing connections via HTTP for cloud-based services, stdio for local servers, and SSE for legacy use cases. It provides commands to add servers, configure authentication headers or environment variables, and test connections to ensure proper setup. Users can access MCP-provided tools, resources, and prompts through Claude Code using simple prefixes, enabling smooth execution of tasks like creating GitHub issues, managing Notion pages, or interacting with custom APIs. The skill supports OAuth 2.0 authentication, local system integration, and offline operation for local servers, offering comprehensive coverage for various development and operational scenarios.

This skill is ideal for developers, data engineers, and AI enthusiasts who need to integrate external services into Claude Code workflows. It supports project-level, user-level, and local scopes, catering to different collaboration and deployment requirements. Use cases include automating project management tasks, retrieving and updating data from connected services, integrating with proprietary APIs, and leveraging local system utilities for enhanced AI capabilities. By simplifying MCP server connections, this skill empowers users to extend the functionality of Claude Code and streamline AI-driven workflows across multiple platforms.

FAQ

Which transport method should I use for a remote service?

HTTP transport is recommended for remote, cloud-based services as it supports JSON-RPC, works across networks, and includes OAuth 2.0 support.

Can I run an MCP server locally without network access?

Yes, stdio transport allows you to run local servers with direct system access and offline functionality.

How do I authenticate an MCP server requiring an API key or token?

You can provide credentials using HTTP headers for HTTP servers or environment variables for stdio servers. OAuth authentication can be completed using the `/mcp` command in Claude Code.

Is SSE transport still supported?

SSE transport is deprecated and HTTP servers are recommended instead for new integrations.

Do I need special configuration for Windows when using local servers?

Yes, when using npx commands on Windows, you should wrap them with `cmd /c` and use the `--` separator before specifying the command.

Install connect-mcp-server

Download and extract the skill files to your .claude/skills/ directory.

Quick Setup:

  1. Copy the skill folder to .claude/skills/
  2. Claude will automatically detect and use the skill

Repository

ronnycoding/.claude

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