adr copilot-instructions.md

Repository guidance for an ADR plugin, where an architectural decision record is a document that explains an important software design choice and its reasoning.

In plain words
What is it for?
Use it when developing or testing the plugin's skills, commands, agents, templates, schemas, and ADR lifecycle features.
Why use it?
It helps contributors follow the plugin's structure and keep changes, tests, documentation, and decision-record workflows consistent.

Instructions file for GitHub Copilot

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 instructions/zircote-plugins/adr/copilot-instructions
Clone the repo
git clone --depth 1 https://github.com/zircote-plugins/adr

Made for: GitHub Copilot.

Per session 256 This file is loaded in full into every session.
When invoked 256 The same file — it is already loaded in full.
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 $0.00256 $0.00256
Opus 5 $0.00128 $0.00128
Sonnet 5 $0.00051 $0.00051
Haiku 4.5 $0.00026 $0.00026

Measured 2d ago against content hash f85acad30801, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

adr copilot-instructions.md 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.

.github/copilot-instructions.md · 45 lines

What it actually says

Copilot Instructions

You are working in the ADR plugin repository for Claude Code.

Project Overview

This is a Claude Code plugin for complete lifecycle management of Architectural Decision Records (ADRs).

Key Components

  • Skills: 12 skills covering fundamentals, formats, compliance, and integration
  • Commands: 7 commands for ADR lifecycle management
  • Agents: 3 agents for authoring, compliance, and research
  • Templates: 7 ADR format templates

Plugin Structure

.claude-plugin/plugin.json  # Plugin manifest
skills/                     # 12 skill directories with SKILL.md and references
commands/                   # 7 ADR commands
agents/                     # 3 ADR agents
templates/                  # ADR format templates
schemas/                    # Export schemas

Development Guidelines

  1. Follow Claude Code plugin standards
  2. Keep changes focused and reviewable
  3. Update CHANGELOG.md for user-facing changes
  4. Test commands and agent triggering locally

Testing

claude --plugin-dir .

Then test:

  • /adr:new command
  • /adr:list command
  • /adr:setup command
  • Agent triggering for architectural discussions
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 · 45 lines · 256 tokens per session scan A f85acad30801

Subscribe to this mod's changes

adr copilot-instructions.md is an instructions file published in the GitHub repository zircote-plugins/adr (5 stars, last pushed 15d ago), licensed MIT. It adds 256 tokens to every session, about $0.0013 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.