Walks you through setting up the MongoDB MCP server with three authentication paths: connection string for single clusters, Atlas service account credentials for API access and multi-cluster work, or Atlas Local for zero-config Docker testing. The skill detects whether you're running Codex or a shell-based client and adjusts instructions accordingly, since Codex stores credentials in config.toml while others use shell environment variables. It's interactive and stepwise, checking existing config first so it doesn't make you redo work. The guide is careful about never asking you to paste credentials into the chat, instead directing you to add them yourself in Step 5. Worth noting it explicitly warns about IP allowlist requirements for service accounts, which will silently break your API calls if you skip it.
npx skills add https://github.com/mongodb/agent-skills --skill mongodb-mcp-setup