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 itseffi/agentic-os --skill decision-journalgit clone --depth 1 https://github.com/itseffi/agentic-osWrote 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/itseffi/agentic-os/decision-journal)<a href="https://agentmods.dev/skills/itseffi/agentic-os/decision-journal"><img src="https://agentmods.dev/badge/skills/itseffi/agentic-os/decision-journal/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/itseffi/agentic-os/decision-journal"><img src="https://agentmods.dev/badge/skills/itseffi/agentic-os/decision-journal.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 | $0.00024 | $0.00341 |
| Opus 5.5 | $0.00010 | $0.00136 |
| Sonnet 5.5 | $0.00005 | $0.00068 |
| Haiku 4.5 | $0.00002 | $0.00034 |
Grade A, and why
decision-journal 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 1mo 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.
What it actually says
Decision Journal
Create structured records of decisions for learning and accountability.
When to Use
When making important decisions that you want to track and learn from.
The Framework
Record these components for each decision:
1. Expected Outcomes
List 3-5 possible outcomes:
- Best case scenario
- Most likely scenario
- Worst case scenario
- Consider short and long-term
2. Probability Estimates
For each outcome, estimate likelihood (must sum to 100%):
- Outcome A: X%
- Outcome B: Y%
- etc.
3. Key Assumptions
List 3-5 critical assumptions:
- What beliefs underlie this decision?
- Which, if wrong, would change the outcome?
4. Base Rates
Research relevant statistics:
- What's typical for this type of decision?
- Historical data or industry averages?
- What do similar situations suggest?
5. Quit Conditions
Define 2-3 triggers to abandon or change course:
- Clear, measurable indicators
- Specific thresholds
- Timeline checkpoints
6. Actual Results
Leave blank initially, fill in later:
- What actually happened?
- Which outcome occurred?
- Were assumptions valid?
Review Process
After outcomes are known:
- Compare predictions to reality
- Identify where thinking was wrong
- Extract lessons for future decisions
When Not to Use
Do not use this skill when the request is unrelated, low-stakes, or better handled by a simpler direct response.
What ships with it
1 file 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.
- 1mo ago First seen · 64 lines · 24 tokens per session scan A a9b51134d1d2
decision-journal is a skill published in the GitHub repository itseffi/agentic-os (117 stars, last pushed 14d ago), licensed MIT. It adds 24 tokens to every session and 341 once invoked, about $0.0001 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 2026-08-30.
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