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Reasoning.Services — Claude Code Plugin
Structured reasoning tools for AI workflows. Isolated cognitive sessions that don't pollute your context or reinforce your biases.
What You Get
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 |
Install
# 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.
Authentication
All tools require a subscription. Sign up at reasoning.services.
After subscribing, Claude Code will prompt for OAuth credentials on first tool use.
Tools in Detail
Structured Reflection (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 (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 (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 (sequential-thinking)
Use when a problem requires explicit step-by-step reasoning. Tracks confidence per step, maps dependencies between steps, detects contradictions.
Chaining Pattern
For complex decisions:
- Reflect — Articulate the actual problem (Structured Reflection)
- Explore — Surface blind spots (Context Switcher)
- Decide — Systematic evaluation (Decision Matrix)
Support
- Documentation: reasoning.services
- Issues: github.com/reasoning-services/marketplace
- Contact: [email protected]
License
MIT