benefriches: Skill for Claude Code

.claude/skills/adr/SKILL.md

adr is a skill for Claude Code from incubateur-ademe/benefriches. It costs 37 tokens per session (644 once invoked), scanned A, original, MIT.

A guide for deciding when to write an Architecture Decision Record, or ADR—a short document explaining an important technical choice and why it was made.

In plain words
What is it for?
Use it to review recent code changes, identify significant patterns or technology choices, and create an ADR when the decision will guide future development.
Why use it?
It prevents durable architecture decisions from being lost after a refactor or major change. It also avoids documenting routine fixes that do not affect the system’s design.

Skill for Claude Code

Written for Claude Code: allowed-tools in frontmatter.

This is incubateur-ademe/benefriches's own configuration. It tells Claude Code how to work on benefriches itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything benefriches configures →

Reuse

Borrowing it

Nothing to install: this file belongs to incubateur-ademe/benefriches. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/incubateur-ademe/benefriches/main/.claude/skills/adr/SKILL.md
Clone the repo
git clone --depth 1 https://github.com/incubateur-ademe/benefriches

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
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Your own site
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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
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Per session 37 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 644 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. Third-party audits
  • NVIDIA SkillSpector pass 7 Sept 2026
How audits are shown
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 $0.00037 $0.00644
Opus 5 $0.00018 $0.00322
Sonnet 5 $0.00007 $0.00129
Haiku 4.5 $0.00004 $0.00064

Measured 12d ago against content hash 21f3fe42286c, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-12, 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 12d 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.

.claude/skills/adr/SKILL.md · 91 lines

How it starts

The opening of the file, as written. The whole thing — 91 lines — stays where its author put it; the contents beside it link to each section on GitHub.

ADR - Architecture Decision Record

Evaluate whether recent changes warrant an ADR and create one if justified.

Instructions

1. Analyze Session Changes

Run git diff to see uncommitted changes. If no uncommitted changes, run git diff HEAD~1 to review the last commit.

If a scope is provided via arguments (e.g., a commit range or file path), use that instead.

2. Determine if an ADR is Warranted

An ADR is justified when:

  • A significant architectural decision was made (new pattern, new abstraction, structuring technical choice)
  • The decision affects the code structure in a durable manner
  • There were alternatives considered that are useful to document
  • A new library or tool was introduced that replaces or complements existing ones
  • A convention or pattern was established that future code should follow

An ADR is NOT justified for:

  • Routine feature additions following existing patterns
  • Bug fixes
  • Minor refactoring that doesn't change architecture
  • Dependency updates (unless a major migration)
  • Configuration changes

3. If Not Warranted

Report to the user:

No ADR needed - changes follow existing patterns without introducing new architectural decisions.

4. If Warranted

4a. Determine the next ADR number

List existing ADR files to find the next sequential number:

ls docs/adr/
4b. Read the template

Read the ADR template at docs/adr/0000-template.md.

4c. Draft the ADR

Write the ADR following the template with these rules:

  • Title: Concise decision statement in imperative form (e.g., "Use Zod for runtime validation")
  • Date: Today's date
  • Status: Accepted
  • Context: Why did this decision come up? What problem were we solving?
  • Decision: What was decided, concisely
  • Options Considered: At least 2 options with honest pros/cons. Only include options that were actually considered, don't invent fictional alternatives.
  • Consequences: Real positive and negative impacts
  • Links: Reference related ADRs if applicable

Read the full file on GitHub · 91 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. 12d ago First seen · 91 lines · 37 tokens per session scan A 21f3fe42286c

Subscribe to this mod's changes

adr is a skill published in the GitHub repository incubateur-ademe/benefriches (45 stars, last pushed 3d ago), licensed MIT. It adds 37 tokens to every session and 644 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 2026-08-30.

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