adr

adr is a command for Claude Code from fockus/skill-memory-bank. It costs 44 tokens per session (1,041 once invoked), scanned A, original, MIT.

A command that records important, difficult-to-reverse technical choices as Architecture Decision Records, or ADRs.

In plain words
What is it for?
Use it to add a decision to the memory-bank backlog after checking the existing decisions and relevant code. It is intended for choices with meaningful alternatives and lasting consequences.
Why use it?
It preserves the reasons and trade-offs behind decisions so future developers can understand why the code works that way.

Command for Claude Code

Written for Claude Code: allowed-tools in frontmatter.

Good fit Use it to add a decision to the memory-bank backlog after checking the existing decisions and relevant code. It is intended for choices with meaningful alternatives and lasting consequences.

Compare 6 commands from other repositories ↓
Install with agentmods
npx agentmods add commands/fockus/skill-memory-bank/adr
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.

Clone the repo
git clone --depth 1 https://github.com/fockus/skill-memory-bank

Made for: Claude Code.

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 adr

README.md
[![agentmods](https://agentmods.dev/badge/commands/fockus/skill-memory-bank/adr/github.svg)](https://agentmods.dev/commands/fockus/skill-memory-bank/adr)
Your own site
<a href="https://agentmods.dev/commands/fockus/skill-memory-bank/adr"><img src="https://agentmods.dev/badge/commands/fockus/skill-memory-bank/adr/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.

agentmods 80×15 button for adr

Your own site · 80×15
<a href="https://agentmods.dev/commands/fockus/skill-memory-bank/adr"><img src="https://agentmods.dev/badge/commands/fockus/skill-memory-bank/adr.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 44 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 1,041 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
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 $0.00044 $0.01041
Opus 5.5 $0.00018 $0.00416
Sonnet 5.5 $0.00009 $0.00208
Haiku 4.5 $0.00004 $0.00104

Measured 14d ago against content hash 72708f9975d8, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

adr 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 14d 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.

commands/adr.md · 81 lines

How it starts

The opening of the file, as written. The whole thing — 81 lines — stays where its author put it; the contents beside it link to each section on GitHub.

ADR: $ARGUMENTS

Skill bundle root

Every bundled helper below runs through the skill bundle root, never a bare scripts/… path (the working directory is the user's project, where scripts/ is absent or belongs to someone else):

SKILL_DIR="${MB_SKILLS_ROOT:-${SKILL_DIR:-$HOME/.claude/skills/memory-bank}}"
[ -f "$SKILL_DIR/scripts/_lib.sh" ] || { echo "mb: skill bundle not found at $SKILL_DIR — set MB_SKILLS_ROOT" >&2; exit 2; }

0. Validate arguments

If $ARGUMENTS is empty, stop and ask the user for the decision title. Do not proceed with an empty title.

1. When to record an ADR (3-gate)

Offer an ADR only when all three are true (from grill-with-docs):

  1. Hard to reverse — the cost of changing your mind later is meaningful.
  2. Surprising without context — a future reader will look at the code and wonder "why on earth did they do it this way?"
  3. The result of a real trade-off — there were genuine alternatives and you picked one for specific reasons.

If any gate fails, skip the ADR: an easy-to-reverse decision will just be reversed; an unsurprising one needs no explanation; a no-alternative one records nothing beyond "we did the obvious thing." When the user explicitly asks for an ADR, honour it — but note which gate is weak.

2. Context

  • ADRs live in ./.memory-bank/adr.md — the ADR registry: append-only, monotonic ADR-NNN, superseded records are marked, never deleted.
  • If the bank still keeps old ADRs in its idea registry (grep -c '^### ADR-' .memory-bank/backlog.md > 0), move them into adr.md first: bash "$SKILL_DIR"/scripts/mb-adr-migrate.sh --apply.
  • Study the relevant part of the codebase so the decision has real grounding.
  • Make sure this decision (or a close variant) is not already recorded or rejected: grep -i "<keyword>" .memory-bank/adr.md.

3. Draft — only what is key

Show the user a draft before writing. Format (single source: references/templates.md § ADR registry) — four fields, 1–2 sentences each, the whole record ≤ 1200 bytes:

Read the full file on GitHub · 81 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. 14d ago Changed · -7 lines · +34 tokens per session 72708f9975d8
  2. 23d ago Changed · +10 lines f8592dfbd616
  3. 1mo ago First seen · 78 lines · 10 tokens per session scan A c202d9e21a2f

Subscribe to this mod's changes

adr is a command published in the GitHub repository fockus/skill-memory-bank (29 stars, last pushed 3d ago), licensed MIT. It adds 44 tokens to every session and 1,041 once invoked, about $0.0002 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.