reasoning plugins

by Alberto Leal

MCP server exposing a single sequentialthinking tool for dynamic, reflective, step-by-step problem-solving. Use when a task needs structured reasoning, planning, hypothesis generation, branching to explore alternatives, or revising earlier steps while keeping a running chain of thoughts.

by Alberto Leal

Invoke deep sequential thinking for complex problem-solving. Use when the user says 'use ultrathink', 'ultrathink', or when tackling problems that require careful step-by-step reasoning, planning, hypothesis generation, or multi-step analysis.

Heavy Thinking as the Inner Skill in Agentic Harness — spawns K independent parallel reasoning agents then performs critical sequential deliberation. Implementation of arXiv:2605.02396v1.

by Anselm Hahn

Staged reasoning-composition techniques from prompt-engineering theory for complex, ambiguous, or multi-faceted tasks: a Clarify -> Explore -> Decompose -> Execute -> Revise pipeline with code-enforced guarantees.

by Majestic Labs

Review decisions and pressure-test plans and conclusions through retrospectives, devil's advocate, premortem, and reasoning verification.

by Andreas Asprou

Ask the Oracle (GPT-5.2 with deep reasoning) strategic technical questions. Read-only advisor for architecture, security, and complex debugging.

A personal collection of specialized skills covering research, reasoning, writing, design, and development workflows

by SoT Runtime Contributors

External State-of-Thought controller for Astra/Codex.

by YixuAn

Unlock full-power 'We need' reasoning chains for DeepSeek Pro models in Claude Code: every decision turn simulates the official DSH minimal mode (one-line persona + Bash/Edit pair), execution turns keep full MCP tools with DSH persona.