MCP servers for human-in-the-loop

A QuickBooks MCP server built for real books. Exposes QuickBooks Online as callable tools over the Model Context Protocol, with every create, update and delete gated behind human approval and a plain-

Render agent-written Markdown as a live local page, and send the human's click back to the agent as typed data. Human-in-the-loop approval gates for coding agents.

Community-built Codex–COMSOL bridge using officially supported MATLAB MCP and LiveLink integration layers, with native multiphysics API access, task-level execution, same-model Desktop observation, an