Thinking Tools
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Thinking Tools π§
Five rigorous reasoning protocols for Claude & ChatGPT. Free, open-source, and zero extra credits β they run on the AI you're already talking to.
One MCP server. Works in both Claude and ChatGPT.
Tool | What it does |
| Convenes an expert panel derived from your question, argues it out (steelman β attack), then delivers a verdict with the strongest dissent preserved and what evidence would flip it |
| Steelmans your plan, then hunts hidden assumptions, failure modes, misuse, scaling breakpoints and single points of failure. 12-month pre-mortem. Risks ranked by likelihood Γ impact, each with the cheapest fix or a falsifying test |
| Reconstructs any text's argument, names quote-anchored fallacies, biases and rhetoric, shows what evidence is missing β and rates argument quality and conclusion truth separately |
| Defensive STRIDE review: assets, actors, trust boundaries, data flows β rated threats, each with a named, located control. Hardening only, never exploits |
| Extracts design/N/baseline/effect size/CI/p from a study or statistic; flags p-hacking, missing controls, survivorship bias, relative-risk inflation; verdict separates weak study from false claim |
How it's free
The server runs no AI. Each tool returns an expert-designed protocol as plain text; your own Claude/ChatGPT reads it and does the reasoning in the same turn. No API key, no second bill.
That's also why you invoke it explicitly ("Debate this: ..."). An MCP server can't intercept your
message before the AI sees it β that's a platform rule, not a missing feature.
Related MCP server: Think Strategies
Design principles baked into every protocol
Steelman before attacking β never critique a weaker version than you'd defend
Quote before accusing β no quote, no fallacy claim
Never fake consensus β dissent is preserved, split verdicts are reported as split
Invent nothing β no fabricated stats, sources, or citations; uncertain recall is labelled
Separate "bad argument" from "false conclusion" β a bad argument can have a true conclusion
Use it
Debate this: should we rewrite the backend in Rust?
Red team my plan: [paste plan]
Audit this argument: [paste article]
Threat model: a public API with JWT auth and Postgres
Check this study: "Coffee cuts heart disease 50%, per a study of 40 people"Deploy your own (free)
npm install
npx wrangler deploy # prints your live URLYour connector URL is that address + /mcp.
Connect it
Claude (any plan): Settings β Connectors β Add custom connector β paste the
/mcpURLChatGPT (Plus+, desktop web): Settings β Connectors β Advanced β Developer mode β add the
/mcpURL, Auth None
β οΈ Use the URL ending in
/mcpβ the bare address is just a status page.
License
MIT Β© 2026 Pranay Mahendrakar β free to use, modify, and share.
Tool Schema Changelog
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Maintenance
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