adr-create

adr-create is a skill for Claude Code, Codex from event4u-app/agent-config. It costs 36 tokens per session (4,499 once invoked), scanned A, original, MIT.

Instructions for recording an architectural decision in an ADR, or Architecture Decision Record. An ADR is a short document explaining an important technical choice, its context, and its consequences.

In plain words
What is it for?
Use them when documenting choices such as public APIs, database schemas, contracts, library changes, deprecations, or decisions that replace earlier ones.
Why use it?
They help teams preserve why a hard-to-reverse or widely affecting design decision was made, rather than relying on memory.

Skill for Claude CodeCodex

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/event4u-app/agent-config/adr-create
Any agent
npx skills add event4u-app/agent-config --skill adr-create
Clone the repo
git clone --depth 1 https://github.com/event4u-app/agent-config

Made for: Claude Code, Codex.

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-create

README.md
[![agentmods](https://agentmods.dev/badge/skills/event4u-app/agent-config/adr-create.svg)](https://agentmods.dev/skills/event4u-app/agent-config/adr-create)
Your own site
<a href="https://agentmods.dev/skills/event4u-app/agent-config/adr-create"><img src="https://agentmods.dev/badge/skills/event4u-app/agent-config/adr-create.svg" alt="Measured on agentmods" height="20"></a>
Per session 36 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 4,499 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 $0.00036 $0.04499
Opus 5 $0.00018 $0.02250
Sonnet 5 $0.00007 $0.00900
Haiku 4.5 $0.00004 $0.00450

Measured 5d ago against content hash 6677833becc0, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-05, from the pricing page.

Security

Grade A, and why

adr-create 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 5d 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.

src/skills/adr-create/SKILL.md · 395 lines

How it starts

The opening of the file, as written. The whole thing — 395 lines — stays where its author put it; the contents beside it link to each section on GitHub.

adr-create

When to use

Use this skill when:

  • A non-trivial architectural choice needs a written record (kernel membership, cap raises, contract changes, library swap, deprecation).
  • A decision overrides a previous one and needs supersedes: linkage.
  • A roadmap phase closes and the chosen variant must be cited.
  • The user says "write an ADR for X", "decision log this", "we need a record of why we picked Y".

Do NOT use when:

  • The change is reversible without governance impact (typo, lint fix, refactor that stays inside one module).
  • The decision is already covered by an existing ADR — extend or supersede it instead of duplicating.
  • A skill, rule, or guideline is the better home (use those skills).

Admission gate — classify before you create

Run this before picking a surface or a number. An ADR is warranted only when the decision is architecturally significant on at least one axis:

  1. Hard or costly to reverse — a one-way door: public API shape, DB schema, wire format, published identifier, migration.
  2. Broadly constraining — it binds work outside the module that made it.
  3. Crosses a governed surface — consumer contract, API, security or privacy floor, package structure.

None of the three holds → it is not an ADR. Route it to its real home: a decision note in agents/decisions/, a config value, a measurement record in docs/CLAIMS.md, an experiment, or a roadmap item.

Explicitly not ADRs: a temporary numeric threshold · a benchmark value · a model mapping · one-off release sequencing · a reversible local implementation detail.

The tree's own reference case. ADR-002 encodes 25 000 → 26 000 and a 4.0k override ceiling as architecture law (ADR-002:55, :62), and ADR-114 then had to add another override while recording that 7 of 9 kernel rules already carry them (ADR-114:74). The principle — a kernel budget exists, is measured, and is capped — is the ADR. The numbers belong in a versioned budget contract with a regression gate, so a recalibration stops needing an architecture supersession.

Read the full file on GitHub · 395 lines

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. 5d ago First seen · 395 lines · 36 tokens per session scan A 6677833becc0

Subscribe to this mod's changes

adr-create is a skill published in the GitHub repository event4u-app/agent-config (10 stars, last pushed today), licensed MIT. It adds 36 tokens to every session and 4,499 once invoked, about $0.0002 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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