Claude Code
Claude Code, with your accounts in the room.
Your mail, calendar and web search mid-task, no key in mcp.json.
Claude Code is good at the code in front of it. It cannot read the email thread where a bug was reported or check when the fix is due, so you end up pasting that context in yourself.
gbrain connects on two sides. Over MCP it gives Claude Code tools: mail search, calendar, web search, page fetching. And your gbrain workspaces run Anthropic models, so the company behind your assistant is also behind what your workspaces think with.
You choose which tools it gets, and the token in mcp.json can be revoked at any time. No API keys on disk.