awesome-copilot: Instructions file for GitHub Copilot

.github/copilot-instructions.md

awesome-copilot copilot-instructions.md is an instructions file for GitHub Copilot from github/awesome-copilot. It costs 1,126 tokens per session, scanned A, original, MIT.

A set of review rules for files in the GitHub Awesome Copilot project. It covers README updates, prompt files, instruction files, agent files, and skills guides.

In plain words
What is it for?
Use it when reviewing changes to Copilot prompts, instructions, agents, skills, or related documentation in that repository.
Why use it?
It gives code reviewers a consistent checklist for required names, metadata, descriptions, and file locations. This helps catch documentation and configuration problems during review.

Instructions file for GitHub Copilot ✓ vendor

Written for GitHub Copilot: a Copilot instructions file.

This is github/awesome-copilot's own configuration. It tells GitHub Copilot how to work on awesome-copilot 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 awesome-copilot configures →

About the project

Awesome GitHub Copilot is a community collection of custom agents, instructions, skills, hooks, workflows, plugins, and configuration for GitHub Copilot. It helps Copilot users customize coding and development tasks. Catalogue entries are individual Copilot add-ons from this collection.

github/awesome-copilot · 40,401 stars · on GitHub

Reuse

Borrowing it

Nothing to install: this file belongs to github/awesome-copilot. 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/github/awesome-copilot/main/.github/copilot-instructions.md
Clone the repo
git clone --depth 1 https://github.com/github/awesome-copilot

Made for: GitHub Copilot.

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 awesome-copilot copilot-instructions.md

README.md
[![agentmods](https://agentmods.dev/badge/instructions/github/awesome-copilot/copilot-instructions/github.svg)](https://agentmods.dev/instructions/github/awesome-copilot/copilot-instructions)
Your own site
<a href="https://agentmods.dev/instructions/github/awesome-copilot/copilot-instructions"><img src="https://agentmods.dev/badge/instructions/github/awesome-copilot/copilot-instructions/github.svg" alt="Measured on agentmods" height="20"></a>

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 awesome-copilot copilot-instructions.md

Your own site · 80×15
<a href="https://agentmods.dev/instructions/github/awesome-copilot/copilot-instructions"><img src="https://agentmods.dev/badge/instructions/github/awesome-copilot/copilot-instructions.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 1,126 This file is loaded in full into every session.
When invoked 1,126 The same file — it is already loaded in full.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
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 $0.01126 $0.01126
Opus 5.5 $0.00450 $0.00450
Sonnet 5.5 $0.00225 $0.00225
Haiku 4.5 $0.00113 $0.00113

Measured today against content hash dff66f209ece, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

awesome-copilot 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 today.

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

1 near-identical copy found in the catalogue:

.github/copilot-instructions.md · 90 lines

How it starts

The opening of the file, as written. The whole thing — 90 lines — stays where its author put it; the contents beside it link to each section on GitHub.

The following instructions are only to be applied when performing a code review.

Use .github/skills/code-review/SKILL.md for repository-fit, differentiation, provenance, validation, and editorial-quality review criteria. Apply the deterministic file-format checks below as well.

Frontmatter must be valid YAML and satisfy the required fields, types, lengths, and naming rules. Accept any valid YAML scalar style (plain, single-quoted, double-quoted, literal, or folded); do not flag a value solely because it is not single-quoted.

README updates

  • The new file should be added to the docs/README.<type>.md.

Prompt file guide

Only apply to files that end in .prompt.md

  • The prompt has markdown front matter.
  • The prompt has a agent field specified of either agent, ask, or Plan.
  • The prompt has a description field.
  • The description field is not empty.
  • The file name is lower case, with words separated by hyphens.
  • Encourage the use of tools, but it's not required.
  • Strongly encourage the use of model to specify the model that the prompt is optimised for.
  • Strongly encourage the use of name to set the name for the prompt.

Instruction file guide

Only apply to files that end in .instructions.md

  • The instruction has markdown front matter.
  • The instruction has a description field.
  • The description field is not empty.
  • The file name is lower case, with words separated by hyphens.
  • The instruction has an applyTo field that specifies the file or files to which the instructions apply. If they wish to specify multiple file paths they should formatted like '**.js, **.ts'.

Agent file guide

Only apply to files that end in .agent.md

  • The agent has markdown front matter.
  • The agent has a description field.
  • The description field is not empty.
  • The file name is lower case, with words separated by hyphens.
  • Encourage the use of tools, but it's not required.
  • Strongly encourage the use of model to specify the model that the agent is optimised for.
  • Strongly encourage the use of name to set the name for the agent.

Read the full file on GitHub · 90 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. today Changed · +14 lines · +254 tokens per session dff66f209ece
  2. 1mo ago Changed · +4 lines · +43 tokens per session aaa9a197008c
  3. 1mo ago First seen · 72 lines · 829 tokens per session scan A 03dd04a408bf

Subscribe to this mod's changes

awesome-copilot copilot-instructions.md is an instructions file published in the GitHub repository github/awesome-copilot (40,401 stars, last pushed today), licensed MIT. It adds 1,126 tokens to every session, about $0.0045 per session on Opus 5.5. 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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