Minimal MCP Server Generator for Rocket.Chat

This project builds a Gemini CLI extension that solves MCP's context bloat problem for Rocket.Chat developers. Current MCP servers expose an entire platform's API surface, meaning every agent session wastes tokens on hundreds of tool definitions the project will never use. The Minimal MCP Server Generator lets developers describe their use case in plain English and produces a production-ready MCP server covering only the endpoints they actually need. The generator goes beyond raw API wrappers by composing multi-step workflow tools: declarative step graphs that chain API calls, AI reasoning, conditional branching, and data transforms into single high-level operations. It supports two compilation targets: a standalone webhook + REST server that runs anywhere, and an Apps-Engine bridged mode for realtime event interception. The key deliverables include: a Gemini CLI extension with endpoint discovery, schema lookup, and project generation tools; a six-pass workflow validation pipeline that catches and self-corrects LLM mistakes before codegen; additive tool generation that adds new tools to existing servers without overwriting; protocol-level test generation via MCP Inspector; runtime hardening with endpoint allow-lists; and a PlatformProvider abstraction with a Mattermost dry-run proving the generator's portability beyond Rocket.Chat. This approach reduces token costs, fits within free-tier limits, and makes MCP-based Rocket.Chat development accessible to any workspace regardless of plan.