Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx skills add kumaran-is/claude-code-onboarding --skill decision-frameworksgit clone --depth 1 https://github.com/kumaran-is/claude-code-onboardingWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/skills/kumaran-is/claude-code-onboarding/decision-frameworks)<a href="https://agentmods.dev/skills/kumaran-is/claude-code-onboarding/decision-frameworks"><img src="https://agentmods.dev/badge/skills/kumaran-is/claude-code-onboarding/decision-frameworks/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/kumaran-is/claude-code-onboarding/decision-frameworks"><img src="https://agentmods.dev/badge/skills/kumaran-is/claude-code-onboarding/decision-frameworks.svg" alt="Reviewed on agentmods" width="80" height="20"></a>What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00119 | $0.01219 |
| Opus 5.5 | $0.00048 | $0.00488 |
| Sonnet 5.5 | $0.00024 | $0.00244 |
| Haiku 4.5 | $0.00012 | $0.00122 |
Grade A, and why
decision-frameworks scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 2mo ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
How it starts
The opening of the file, as written. The whole thing — 97 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Iron Law
NO GENERIC ADVICE — every framework must be applied to the specific situation the user describes; "consider your assumptions" is not an application; naming the actual assumptions is
Decision Frameworks
Four single-framework deep-dives for decisions, problems, and commitments. Each mode applies one reasoning framework interactively — asking follow-up questions, pushing for specificity, and refusing vague answers.
Use this skill when you want to go deep on one framework. Use mental-model-applier when you want three frameworks applied in parallel for a broader perspective shift.
When to Use This Skill
- You are stuck on a specific problem and want to reason through it systematically
- A decision keeps feeling hard despite having information — you need a different lens
- You want to challenge your own assumptions before committing
- You are about to make an irreversible choice and want to stress-test it
- You need to make tradeoffs explicit rather than implicit
The Four Modes
| Mode | Framework | Best For |
|---|---|---|
| First Principles | Break to fundamental truths, rebuild | Overcoming convention, designing from scratch, "why do we do it this way?" |
| Inversion | Guarantee failure, then flip | Risk surfacing, strategy validation, pre-commitment checks |
| Regret Minimization | Decide from age 80 | Long-horizon personal or career decisions, emotional clarity |
| Opportunity Cost | Make tradeoffs visible | Commitments, resource allocation, "should I do this?" decisions |
Mode Selection
Ask the user which framework to apply if they have not specified one. Present the four options with a one-line description. Use AskUserQuestion when interactive mode permits.
If the user's problem maps clearly to one mode, state which you are using and why before beginning.
Core Workflow
- Read the problem — Understand what is being decided or solved. If the description is vague, ask one clarifying question before proceeding.
- Select mode — Match to the problem type using the table above, or ask.
- Load reference — Read the corresponding reference file for the full method and output template.
- Apply interactively — Do not produce a monologue. Ask follow-up questions. Push for specificity. Refuse vague answers.
- Produce structured output — Use the output template from the reference file.
- Offer a second pass — After completing one mode, offer to run a complementary framework.
What ships with it
4 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 2mo ago First seen · 97 lines · 0 tokens per session scan A dba44c62059a
decision-frameworks is a skill published in the GitHub repository kumaran-is/claude-code-onboarding (36 stars, last pushed 4mo ago), licensed MIT. It adds 119 tokens to every session and 1,219 once invoked, about $0.0005 per session on Opus 5.5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-03.
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