adr

adr is a skill for Claude Code from jhlee0409/omni-harness-kit. It costs 72 tokens per session (279 once invoked), scanned A, original, MIT.

A short record of an important software design decision. It captures the situation, the chosen approach, its consequences, and the alternatives that were rejected; ADR means architecture decision record.

In plain words
What is it for?
Use it to document choices such as module boundaries, technology selections, and trade-offs that affect several parts of a codebase.
Why use it?
It preserves the reasoning behind decisions that may otherwise be forgotten or repeatedly debated, especially when changing them later would be difficult.

Skill for Claude Code

Written for Claude Code: allowed-tools in frontmatter.

Runs only inside its plugin — its command needs a path that Claude Code sets for a plugin’s own hooks and for nothing else. Install the plugin, not this.

Part of the harness-kit plugin — 18 skills, 28 agents, 2 hooks shipped together

Good fit Use it to document choices such as module boundaries, technology selections, and trade-offs that affect several parts of a codebase.

Compare 6 skills from other repositories ↓
Install

Getting it into your agent

This one installs as part of its plugin. Adding the marketplace and installing the plugin brings it with everything else the plugin ships.

Claude Code
/plugin marketplace add jhlee0409/omni-harness-kit
Claude Code
/plugin install harness-kit

Made for: Claude Code.

Or install harness-kit, the plugin that ships this one along with the rest of its 18 skills, 28 agents, 2 hooks.

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/skills/jhlee0409/omni-harness-kit/adr/github.svg)](https://agentmods.dev/skills/jhlee0409/omni-harness-kit/adr)
Your own site
<a href="https://agentmods.dev/skills/jhlee0409/omni-harness-kit/adr"><img src="https://agentmods.dev/badge/skills/jhlee0409/omni-harness-kit/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/skills/jhlee0409/omni-harness-kit/adr"><img src="https://agentmods.dev/badge/skills/jhlee0409/omni-harness-kit/adr.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 72 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 279 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 $0.00072 $0.00279
Opus 5 $0.00036 $0.00139
Sonnet 5 $0.00014 $0.00056
Haiku 4.5 $0.00007 $0.00028

Measured 9d ago against content hash 56d6d4d76452, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, 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 9d ago.

The scan reads SKILL.md. This mod also ships 1 executable file (new-adr.sh), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

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/adr/SKILL.md · 26 lines

What it actually says

adr

Capture WHY a non-obvious decision was made, so a future reader (or session) doesn't re-litigate it.

  1. Scaffold: run bash "${CLAUDE_PLUGIN_ROOT}/skills/adr/new-adr.sh" "<title>" from the repo root. It computes the next number, writes docs/adr/NNNN-<slug>.md from the template, and prints the path.
  2. Fill: Context (the forces) → Decision (active voice) → Consequences (what's easier / harder) → Alternatives (and why not). Keep it short — an ADR records the reasoning, not a manual.
  3. Record an ADR for decisions that are non-obvious, cross-cutting, or hard to reverse — not for routine changes.
Files

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.

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. 9d ago First seen · 26 lines · 72 tokens per session scan A 56d6d4d76452

Subscribe to this mod's changes

adr is a skill published in the GitHub repository jhlee0409/omni-harness-kit (2 stars, last pushed 1mo ago), licensed MIT. It adds 72 tokens to every session and 279 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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