Complex Plans MCP Server

What it does

Complex Plans is a Model Context Protocol (MCP) server that gives AI coding agents a structured way to plan before they act. Instead of diving straight into a complex, multi-file change, the agent writes a Markdown plan, asks you to review it, and only then starts implementing.

It also bundles a sequential thinking tool for step-by-step reasoning, so the same server covers both planning and analysis. It works with any MCP-compatible client: it was developed mainly for the Mistral Vibe CLI, but also connects to Claude Code and other editors.

Install

npx -y @tuchsoft/mcp-complex-plans

Configure

For Claude Code, add the server to your configuration:

claude mcp add complex_plans npx -- -y @tuchsoft/mcp-complex-plans --disabled-tools=sequentialThinking

For the Mistral Vibe CLI, add it to ~/.vibe/config.toml. The sequentialThinking tool can be disabled when the model already has native reasoning, to avoid redundancy.

Tools

• createPlan - write a structured plan for a complex task
• updatePlan - edit an existing plan with search/replace blocks
• listPlans and readPlan - browse and load plans
• deletePlan - remove a plan when it is done
• openInEditor - open the plan in your configured editor
• sequentialThinking - dynamic, multi-step reasoning

Configuration

Behaviour can be set through a project-level config file, CLI arguments or environment variables: the plans directory name, the default editor, whether plans are added to .gitignore, and which tools to disable. Everything operates safely inside the configured plans directory.