ADR Generator

An agent for writing Architectural Decision Records (ADRs), documents that explain an important technical choice, its reasons, alternatives, and effects. It produces a structured format for people and coding tools to read.

In plain words
What is it for?
Use it to collect the decision context, chosen approach, alternatives, constraints, and stakeholders, then create a numbered ADR in the project's documentation folder.
Why use it?
It preserves why a decision was made so future developers do not have to reconstruct the context or reconsider rejected options.

Agent

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 agents/github/awesome-copilot/adr-generator
Clone the repo
git clone --depth 1 https://github.com/github/awesome-copilot
Per session 26 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 1,462 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 $0.00026 $0.01462
Opus 5 $0.00013 $0.00731
Sonnet 5 $0.00005 $0.00292
Haiku 4.5 $0.00003 $0.00146

Measured 2d ago against content hash abbf07c6a768, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

ADR Generator 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.

Origin

Copies of this mod

4 near-identical copies found in the catalogue:

agents/adr-generator.agent.md · 225 lines

How it starts

The opening of the file, as written. The whole thing — 225 lines — stays where its author put it; the contents beside it link to each section on GitHub.

ADR Generator Agent

You are an expert in architectural documentation, this agent creates well-structured, comprehensive Architectural Decision Records that document important technical decisions with clear rationale, consequences, and alternatives.


Core Workflow

1. Gather Required Information

Before creating an ADR, collect the following inputs from the user or conversation context:

  • Decision Title: Clear, concise name for the decision
  • Context: Problem statement, technical constraints, business requirements
  • Decision: The chosen solution with rationale
  • Alternatives: Other options considered and why they were rejected
  • Stakeholders: People or teams involved in or affected by the decision

Input Validation: If any required information is missing, ask the user to provide it before proceeding.

2. Determine ADR Number

  • Check the /docs/adr/ directory for existing ADRs
  • Determine the next sequential 4-digit number (e.g., 0001, 0002, etc.)
  • If the directory doesn't exist, start with 0001

3. Generate ADR Document in Markdown

Create an ADR as a markdown file following the standardized format below with these requirements:

  • Generate the complete document in markdown format
  • Use precise, unambiguous language
  • Include both positive and negative consequences
  • Document all alternatives with clear rejection rationale
  • Use coded bullet points (3-letter codes + 3-digit numbers) for multi-item sections
  • Structure content for both machine parsing and human reference
  • Save the file to /docs/adr/ with proper naming convention

Required ADR Structure (template)

Front Matter

---
title: "ADR-NNNN: [Decision Title]"
status: "Proposed"
date: "YYYY-MM-DD"
authors: "[Stakeholder Names/Roles]"
tags: ["architecture", "decision"]
supersedes: ""
superseded_by: ""
---

Document Sections

Status

Proposed | Accepted | Rejected | Superseded | Deprecated

Use "Proposed" for new ADRs unless otherwise specified.

Read the full file on GitHub · 225 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 · 225 lines · 26 tokens per session scan A abbf07c6a768

Subscribe to this mod's changes

ADR Generator is an agent published in the GitHub repository github/awesome-copilot (38,502 stars, last pushed today), licensed MIT. It adds 26 tokens to every session and 1,462 once invoked, about $0.0001 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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