Structured reasoning tools for AI workflows — isolated cognitive sessions with persistent state and structured output
npx claudepluginhub reasoning-services/marketplace
Structured reasoning tools for AI workflows. Isolated cognitive sessions that don't pollute your context or reinforce your biases.
4 MCP servers, installed with two commands:
| Tool | What it does |
|---|---|
| Structured Reflection | Work through complex logic in an isolated session |
| Decision Matrix | Systematic comparison against weighted criteria |
| Context Switcher | Parallel perspectives from multiple stakeholders/roles |
| Sequential Thinking | Linear reasoning with confidence tracking and contradiction detection |
# 1. Add this marketplace (once)
/plugin marketplace add reasoning-services/marketplace
# 2. Install the plugin
/plugin install reasoning-services@reasoning-services-marketplace
Restart Claude Code. All 4 servers appear in /mcp.
All tools require a subscription. Sign up at reasoning.services.
After subscribing, Claude Code will prompt for OAuth credentials on first tool use.
structured-reflection)Use when thinking feels muddy, you're stuck, or you need to articulate a problem to force clarity. Runs in a separate session — won't pollute your main conversation context.
decision-matrix)Use when you have multiple viable options with real trade-offs. Define criteria, weight them, score each option. Returns structured scoring you can act on.
context-switcher)Use when a decision affects multiple stakeholders or you need to surface blind spots. Runs the same question from different roles/perspectives in parallel.
sequential-thinking)Use when a problem requires explicit step-by-step reasoning. Tracks confidence per step, maps dependencies between steps, detects contradictions.
For complex decisions:
MIT
A deterministic thinking partner that challenges assumptions and applies 150+ mental models to sharpen decisions, solve problems, and think more clearly. Features orientation detection, cognitive operations framework, and structured diagnostic workflows.
External network access
Connects to servers outside your machine
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