decision-record

decision-record is a skill for Claude Code from donald-ada/workinggenius. It costs 73 tokens per session (721 once invoked), scanned A, original, MIT.

A project index of settled design and implementation decisions, stored in `.genius/DECIDED.md`. Each entry records the decision, its reason, and where the full discussion is kept.

In plain words
What is it for?
Use it when a project makes an important choice, when checking whether a new design conflicts with an earlier one, or when another workflow needs to find past decisions.
Why use it?
It prevents future contributors or coding sessions from accidentally reopening decisions that have already been resolved.

Skill for Claude Code

Written for Claude Code: shipped in a Claude Code plugin.

Part of the workinggenius plugin — 22 skills, 3 agents shipped together

Install

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.

agentmods
npx agentmods add skills/donald-ada/workinggenius/decision-record
Any agent
npx skills add donald-ada/workinggenius --skill decision-record
Clone the repo
git clone --depth 1 https://github.com/donald-ada/workinggenius

Made for: Claude Code.

Or install workinggenius, the plugin that ships this one along with the rest of its 22 skills, 3 agents.

Wrote 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.

agentmods badge for decision-record

README.md
[![agentmods](https://agentmods.dev/badge/skills/donald-ada/workinggenius/decision-record.svg)](https://agentmods.dev/skills/donald-ada/workinggenius/decision-record)
Your own site
<a href="https://agentmods.dev/skills/donald-ada/workinggenius/decision-record"><img src="https://agentmods.dev/badge/skills/donald-ada/workinggenius/decision-record.svg" alt="Measured on agentmods" height="20"></a>
Per session 73 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 721 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin original No closer match found in the catalogue.
Token cost

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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00073 $0.00721
Opus 5 $0.00036 $0.00360
Sonnet 5 $0.00015 $0.00144
Haiku 4.5 $0.00007 $0.00072

Measured yesterday against content hash 8ea2b15d14d7, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-06, from the pricing page.

Security

Grade A, and why

decision-record 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 yesterday.

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.

skills/decision-record/SKILL.md · 32 lines

How it starts

The opening of the file, as written. The whole thing — 32 lines — stays where its author put it; the contents beside it link to each section on GitHub.

The Decision Index

A decision is never written twice. The flow already writes every decision at full strength — the kill-reasons, the survivor's fight, the user's confirmation — into the work file where it was made. What those records lack is a door: a fresh session judging a new design cannot trawl every done file for the one decision it is about to contradict. The door is .genius/DECIDED.md, beside the work files wherever the project pins them — one line per settled decision, each pointing at the fight that settled it. The verdict is the index line; the fight stays where it was written.

The line

- **Raw SQL over any ORM** — schema drift burned v1; queries are few and
  hand-debugged. [The fight](checkout-rework/checkout-rework.log.md#discernment)

Verdict in bold, the why in one line, the link to the record that holds the whole battle. The link is relative to .genius/, where DECIDED.md sits, so it carries the work's folder, as above. A decision that landed outside the flow — no work file, no battlefield — carries its why in the line itself: there the line is the record, so give the why one honest sentence rather than a verdict alone.

The test

An index line is earned by one question: would a future stranger re-fight this? — propose the killed thing again, redo the settled study, "fix" the deliberate deviation. It is the same re-litigation test the kill-reason already answers inside one piece of work, asked across all future work. Most decisions fail it — they bind only their own work, and their work file holds them fine. The ones that pass: architectural shape, boundary no-s, deliberate deviations from the obvious path, constraints invisible in the code, rejections that will be re-proposed by someone who wasn't there.

The discipline

  • Written when the record is finished — Tenacity's close-out asks the test of everything the work settled; a standalone /architect study writes its line when the design is confirmed. Never a second write-up: the line points, the record carries.
  • Read before contradicting. The index is the ammunition /discern and /architect load: a design that touches a settled decision either dies of the fight on record or names the decision it overturns and why.
  • Overturning moves the line. A new fight that beats a settled decision rewrites its line — new verdict, new link — and the old record stays exactly as written, because a record's worth is that it is what was written then. The index carries what the project believes now; the files carry how it came to believe it, including everything it used to.

Read the full file on GitHub · 32 lines

Changes

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.

  1. yesterday Changed 8ea2b15d14d7
  2. 6d ago First seen · 32 lines · 73 tokens per session scan A 2198a8c6a9e5

Subscribe to this mod's changes

decision-record is a skill published in the GitHub repository donald-ada/workinggenius (6 stars, last pushed yesterday), licensed MIT. It adds 73 tokens to every session and 721 once invoked, about $0.0004 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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