Step-by-step guides for working with AI agents: how to install and write your own skill, connect an MCP server in Claude Code and Codex, check third-party code before installing it and remove AI traces from text.
An MCP server is a small program that lets an AI agent such as Claude Code, Cursor or Codex work with an outside service: your files, a database, a browser, an issue tracker. Here is how it works, how to connect one and what the risks are.
Codex skills are folders with a SKILL.md file that the agent reads before a task. I'd start with Matt Pocock's skills, Playwright Skill and Anthropic's document skills. Below are 12 skills by task, manual installation and MCP setup for Codex CLI.
Catalog entries mentioned most often in this category.
