adr-manager

An Architecture Decision Record (ADR) writer that adds numbered entries to a project file. An ADR is a short record of an important technical choice, including why it was made and what followed from it.

In plain words
What is it for?
Use it to record choices such as selecting a database or adopting an event-driven design, while keeping entries numbered and consistently formatted.
Why use it?
It keeps the reasoning behind major design choices from being lost. Future maintainers can see the situation, decision, status, and consequences in a consistent format.

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/alteredcraft/claude-code-plugins/adr-manager
Any agent
npx skills add AlteredCraft/claude-code-plugins --skill adr-manager
Clone the repo
git clone --depth 1 https://github.com/AlteredCraft/claude-code-plugins

Made for: Claude Code, Codex.

Per session 45 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 682 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 $0.00045 $0.00682
Opus 5 $0.00023 $0.00341
Sonnet 5 $0.00009 $0.00136
Haiku 4.5 $0.00005 $0.00068

Measured 2d ago against content hash 69be46104342, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

adr-manager 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 2d 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.

plugins/artifact-workflow/skills/adr-manager/SKILL.md · 88 lines

How it starts

The opening of the file, as written. The whole thing — 88 lines — stays where its author put it; the contents beside it link to each section on GitHub.

ADR Manager

Overview

This skill appends Architecture Decision Record entries to an ADR file. ADRs capture significant architectural decisions, providing future maintainers with context about why decisions were made.

Based on Michael Nygard's ADR template.

Adding an ADR Entry

Read the existing ADR file to determine the next sequential number, then append a new entry.

ALWAYS include a context link: **Build:** [bld-<project-slug>](./.artifacts/bld-<project-slug>/)

Entry Format

## ADR-<NNN>: <Title>

<context-link>

### Status

<status>

### Context

<context>

### Decision

<decision>

### Consequences

<consequences>

---

Field Guidance

  • ADR-NNN: Sequential number (ADR-001, ADR-002, etc.). Read existing entries to determine next number.
  • Title: Concise description of the decision (e.g., "Use PostgreSQL for persistence", "Adopt event-driven architecture")
  • Context link: If provided by caller, include as **Build:** [link](./path/) or similar. Omit if not provided.
  • Status: One of proposed, accepted, rejected, deprecated, superseded
  • Context: The issue or situation motivating this decision. What forces are at play?
  • Decision: What was decided and why. Be specific about the choice made.
  • Consequences: What becomes easier or harder as a result. Include both positive and negative impacts.

When to Add an Entry

Add an ADR entry when:

  • Choosing between competing technologies or frameworks
  • Selecting significant architectural patterns
  • Making trade-offs with meaningful consequences
  • Deviating from the original plan
  • Making decisions that future maintainers would benefit from understanding

Do NOT add entries for:

  • Routine implementation details
  • Minor code organization choices
  • Decisions that are easily reversible with no significant impact

Example Scenarios

Add ADR: "Chose Next.js App Router over Pages Router for better streaming support" ✅ Add ADR: "Adopted Zustand for state management due to simplicity vs Redux complexity" ✅ Add ADR: "Implemented optimistic UI updates to improve perceived performance despite network latency" ✅ Add ADR: "Selected PostgreSQL over MongoDB for ACID guarantees in financial transactions"

Read the full file on GitHub · 88 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. 2d ago First seen · 88 lines · 45 tokens per session scan A 69be46104342

Subscribe to this mod's changes

adr-manager is a skill published in the GitHub repository AlteredCraft/claude-code-plugins (13 stars, last pushed 3mo ago), licensed MIT. It adds 45 tokens to every session and 682 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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