Guides

MCP explained in plain words: what an MCP server is, how AI assistants use it, and local versus remote servers.

Claude skills explained: SKILL.md folders that teach Claude how to do a task, how they load, and how they differ from MCP servers.

When to use a Claude skill, an MCP server or a plugin, with a side-by-side comparison.

Install an MCP server in Claude Code, Claude Desktop, Cursor, VS Code, Codex, Gemini CLI or ChatGPT, step by step.

The real risks of MCP servers and AI skills, and a 5-point check before you install one.

Fix an MCP server that does not appear in Claude Desktop, Claude Code, Cursor or VS Code.

Write your own Claude skill: folder layout, SKILL.md format, a good description, and testing it.

Add, scope, check and remove MCP servers in Claude Code with the claude mcp commands, including API keys and remote servers.

Add local MCP servers through claude_desktop_config.json and remote ones as connectors in the Claude app, step by step.

Add MCP servers to Cursor with one click or through mcp.json, for one project or all projects.

Use MCP servers in VS Code with GitHub Copilot: mcp.json, the "servers" key and agent mode.

ChatGPT connects to remote MCP servers as custom connectors. What works, what does not, and how to add one.

Add MCP servers to OpenAI Codex with codex mcp add or the config.toml file.

Add MCP servers to Gemini CLI with gemini mcp add or settings.json.

Install a skill in Claude Code (a folder with a SKILL.md) or upload it in the Claude app.

Add a plugin marketplace and install plugins in Claude Code with the /plugin commands.

The difference between local and remote MCP servers, and which one fits Claude, ChatGPT, Cursor and teams.

Pass API keys and tokens to MCP servers through env and headers, and keep them out of shared files.

How to check whether an MCP server comes from the company behind the product, and what that means for trust.

What to check before installing an MCP server, Claude skill or plugin, and how our security check helps.

Add MCP servers and skills to Antigravity CLI (agy), the successor of Gemini CLI, through mcp_config.json.