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 jaredlangleycc/nightshift-os --skill decision-loggergit clone --depth 1 https://github.com/jaredlangleycc/nightshift-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/jaredlangleycc/nightshift-os/decision-logger)<a href="https://agentmods.dev/skills/jaredlangleycc/nightshift-os/decision-logger"><img src="https://agentmods.dev/badge/skills/jaredlangleycc/nightshift-os/decision-logger.svg" alt="Measured on agentmods" 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 | $0.00096 | $0.03431 |
| Opus 5 | $0.00048 | $0.01716 |
| Sonnet 5 | $0.00019 | $0.00686 |
| Haiku 4.5 | $0.00010 | $0.00343 |
Grade A, and why
decision-logger 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 6d 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 — 321 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Decision Logger
The user makes 200 micro-decisions a week. Most evaporate. The ones that matter at month 6 are usually the ones the user cannot remember making.
Decision-logger captures the non-trivial decisions, the reasoning behind them, and the date to revisit. Six months later, when the same shape of decision comes up, the log shows what the user decided last time and what they learned. This is how working-parent solopreneurs stay coherent across months of fragmented time.
When this skill triggers
Fire when the user:
- Says "logged"
- Says "let's lock this"
- Says "decided"
- Says "locked"
- Says "log this decision"
- Says "log it"
- Completes a
challenge(pre-mortem) session - Completes a
hard-callsession - Has made a non-trivial decision in the current conversation (climb to paid tool, new hire, price change, channel launch, etc.)
Also fire when:
- The user proposes a decision similar to one logged in the past 90 days (surface the prior decision for context)
risk-gaugeflags a move (log the decision either way, override or hold)free-first-checkerdocuments a climb
What counts as non-trivial
The skill logs decisions that meet at least one of these criteria:
- Recurring financial impact above $50/mo
- One-time financial impact above $500
- Time commitment over 10 hours
- Reputation or relationship impact (announcing publicly, ending a contract, naming a price)
- Strategic direction (offer change, channel addition, pricing structure)
- Risk above the user's stated cap
Skip:
- Tactical micro-decisions ("should I email this prospect today")
- Tool clicks ("what time should I schedule this post")
- Decisions made within a logged decision's scope (the logged decision already covered it)
When in doubt, ask the user: "Is this worth logging?"
The log structure
Each decision gets its own file at decisions/YYYY-MM-DD-<slug>.md.
---
date: YYYY-MM-DD
slug: <kebab-case-slug>
type: <hire | spend | offer | pricing | channel | quit | climb | other>
status: <active | revisited | reversed | superseded>
revisit_date: YYYY-MM-DD
related_decisions: <slug1, slug2>
related_skills: <challenge, hard-call, risk-gauge, free-first-checker>
---
# <Decision Title>
## Decision
<One paragraph. What was decided, in plain language. Include specific numbers and dates.>
## Context
<Why this came up. What state the business was in. What the trigger was.>
## Alternatives considered
- **Option A: <name>** - <one-sentence summary of the option> - <why not>
- **Option B: <name>** - <one-sentence summary> - <why not>
- **Option C: <chosen>** - <one-sentence summary> - <why yes>
## Expected outcome
<What the user expects to happen if this decision is right. Specific signals at 30, 60, 90 days.>
## Kill signal
<What would tell the user this decision was wrong. Specific. Numeric where possible.>
## Reasoning
<The actual reasoning behind the call. Quote the user's own words from the session if available. Include what they were avoiding naming if hard-call surfaced it.>
## What I am avoiding
<Optional. If the decision is being made knowing it conflicts with a stated value or cap, name the conflict. This is the honest-mirror line. Future-self will thank you.>
## Revisit checklist
When this decision is revisited at `revisit_date`, check:
- [ ] Did the expected outcome land?
- [ ] Did the kill signal fire? If so, what was done about it?
- [ ] Did the decision conflict with what I was avoiding? Was that worth it?
- [ ] What did this decision teach me about how I make decisions?
## Tags
<#tag1 #tag2 #tag3 - for cross-referencing similar decisions>
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.
- 6d ago First seen · 321 lines · 96 tokens per session scan A 7e7fbf6f41a8
decision-logger is a skill published in the GitHub repository jaredlangleycc/nightshift-os (3 stars, last pushed 1mo ago), licensed MIT. It adds 96 tokens to every session and 3,431 once invoked, about $0.0005 per session on Opus 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 2026-08-31.
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