# Doncheli Reasoning

> 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".

- **Type:** Skill
- **Install:** `agentstack add skill-doncheli-don-cheli-sdd-doncheli-reasoning`
- **Verified:** Yes — security-reviewed for prompt injection and unsafe behavior
- **Seller:** [doncheli](https://agentstack.voostack.com/s/doncheli)
- **Installs:** 0
- **Category:** [AI & ML](https://agentstack.voostack.com/c/ai-and-ml)
- **Latest version:** 0.1.0
- **License:** Apache-2.0
- **Upstream author:** [doncheli](https://github.com/doncheli)
- **Source:** https://github.com/doncheli/don-cheli-sdd/tree/main/.opencode/skills/doncheli-reasoning
- **Website:** https://doncheli.tv

## Install

```sh
agentstack add skill-doncheli-don-cheli-sdd-doncheli-reasoning
```

Requires the [AgentStack CLI](https://agentstack.voostack.com/docs/cli). Works with Claude Code, Cursor, and any MCP-compatible agent.

## About

# Don Cheli: Structured Reasoning Engine

## Available Models

| ID                    | Best For                                                    |
|-----------------------|-------------------------------------------------------------|
| pre-mortem            | Imagining failure before it happens; surfacing hidden risks |
| 5-whys                | Root cause analysis of a known problem                      |
| pareto                | Identifying the 20% of causes driving 80% of impact        |
| inversion             | Asking "what would guarantee failure?" to find blockers     |
| second-order          | Mapping downstream consequences of a decision               |
| first-principles      | Decomposing assumptions down to fundamental truths          |
| minimize-regret       | Choosing the option you will regret least in 10 years       |
| opportunity-cost      | Evaluating what you give up by choosing this option         |
| circle-of-competence  | Assessing whether you have the knowledge to decide well     |
| map-territory         | Separating your mental model from reality                   |
| probabilistic         | Assigning probabilities to outcomes; expected-value calc    |
| reversibility         | Classifying decisions as one-way vs. two-way doors          |
| rlm-chain-of-thought  | Step-by-step explicit reasoning (RLM: PrimeIntellect style) |
| rlm-decomposition     | Breaking a complex problem into atomic sub-problems (RLM)   |
| rlm-verification      | Self-checking the reasoning chain for contradictions (RLM)  |

## 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: 
**Model applied:**  — 

### Analysis

### 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

## Source & license

This open-source skill is cataloged on AgentStack and links to its original source — we do not rehost the code.

- **Author:** [doncheli](https://github.com/doncheli)
- **Source:** [doncheli/don-cheli-sdd](https://github.com/doncheli/don-cheli-sdd)
- **License:** Apache-2.0
- **Homepage:** https://doncheli.tv

Install and usage instructions live in the source repository linked above.

## Pricing

- **Free** — Free

## Security capabilities

Automated source analysis of v0.1.0 — what this tool can access:

- **Network access:** no
- **Filesystem access:** no
- **Shell / process execution:** no
- **Environment & secrets:** no
- **Dynamic code execution:** no

*"Yes" means the capability is present in the source — more access means more to trust, not that it is unsafe.*


## Versions

- **0.1.0** — security scan: passed — Imported from the upstream source.

## Links

- Listing page: https://agentstack.voostack.com/l/skill-doncheli-don-cheli-sdd-doncheli-reasoning
- Seller: https://agentstack.voostack.com/s/doncheli
- Browse the marketplace: https://agentstack.voostack.com/browse

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