Mmcp.market

doncheli-reasoning skill

by doncheli·doncheli/don-cheli-sdd·57 stars·Apache-2.0

Apply structured reasoning models to analyze a decision or problem. Activate when user mentions "reason", "pre-mortem", "5 whys", "pareto", "think through", "analyze decision", "inversion", "first principles", "second order".

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Install the doncheli-reasoning skill

A skill is a folder. Copy it into your agent's skills folder and the agent loads it when the task matches its description. 

git clone --depth 1 https://github.com/doncheli/don-cheli-sdd.git /tmp/don-cheli-sdd
mkdir -p ~/.claude/skills
cp -r /tmp/don-cheli-sdd/.agent/skills/doncheli-reasoning ~/.claude/skills/doncheli-reasoning
available in every project

In the Claude apps, zip the folder and upload it from the Skills settings. The folder on GitHub

The instructions your agent would load

SKILL.md as published, without the frontmatter. Read it on GitHub

Don Cheli: Structured Reasoning Engine

Available Models

Instructions

  1. Read the problem or decision description
  2. If the user did not specify a model, suggest the 1–2 best-fit models with a one-line rationale; wait for confirmation or proceed with the top suggestion
  3. Apply the selected model(s) rigorously, showing all reasoning steps
  4. End with a clear recommendation or insight

Output Format

## Reasoning: <problem>
**Model applied:** <id> — <why this model fits>

### Analysis
<step-by-step application of the model>

### Insight / Recommendation
…

### Caveats
…

Quality Gate

  • Show all intermediate steps — no conclusions without visible reasoning
  • If using probabilistic model, all probabilities must sum to 1 across mutually exclusive outcomes
  • If using rlm-verification, the final step must explicitly confirm or reject the reasoning chain

Do not use this skill when

  • The question requires group deliberation with roles — use doncheli-debate instead
  • The task is a straightforward implementation — use doncheli-implement instead

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