editor-customizations code-review.instructions.md

A set of code-review instructions for GitHub Copilot, Microsoft’s coding assistant. The instructions are generic and can be adapted to a project’s needs.

In plain words
What is it for?
Use it to customize how Copilot reviews code in a project.
Why use it?
It gives reviews a consistent starting point instead of requiring the same review guidance to be written for every project.

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/bwyatt/editor-customizations/code-review
Clone the repo
git clone --depth 1 https://github.com/bwyatt/editor-customizations

Made for: GitHub Copilot.

Per session 3,319 This file is loaded in full into every session.
When invoked 3,319 The same file — it is already loaded in full.
Security scan A 0 findings. Scan, not verified.
Origin unknown 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 $0.03319 $0.03319
Opus 5 $0.01659 $0.01659
Sonnet 5 $0.00664 $0.00664
Haiku 4.5 $0.00332 $0.00332

Measured yesterday against content hash 5cf2cf4a08d4, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

editor-customizations code-review.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 yesterday.

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/instructions/code-review.instructions.md · 414 lines

The source is not reproduced here

No licence file

A repository with no LICENSE is all rights reserved by default, so the body is not copied here. The metadata, the measurements and the link are.

Read it on GitHub

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. yesterday First seen · 414 lines · 3,319 tokens per session scan A 5cf2cf4a08d4

Subscribe to this mod's changes

editor-customizations code-review.instructions.md is an instructions file published in the GitHub repository bwyatt/editor-customizations (1 stars, last pushed 4mo ago), with no licence file. It adds 3,319 tokens to every session, about $0.0166 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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