GitHub list of ChatGPT Plugin Directory
MCP server

Sequential Thinking

Structured, reflective step-by-step problem solving for LLMs

Reference MCP server providing a single tool for dynamic, revisable chains of thought. Models can break problems into steps, revise earlier thoughts and branch into alternative reasoning paths.

Connect

  1. 1Add the server to Codex
    codex mcp add sequential-thinking -- npx -y @modelcontextprotocol/server-sequential-thinking

Configs are generated from the publisher's documented endpoint. Check their docs for plan requirements and scopes. New to this? Read the step-by-step tutorial.

Tools 1

sequential_thinking

Things to ask

  • “Think step by step through migrating our monolith to microservices”
  • “Plan a database schema for a booking app, revising as needed”
  • “Break down this ambiguous bug report into hypotheses”

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