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github-copilot-cli: Instructions file for GitHub Copilot

.github/instructions/markdown.instructions.md

github-copilot-cli markdown.instructions.md is an instructions file for GitHub Copilot from trsdn/github-copilot-cli. It costs 264 tokens per session, scanned A, original, MIT.

Repository instructions for writing and editing Markdown files, the plain-text format commonly used for documentation and configuration guidance.

In plain words
What is it for?
Use them when editing Markdown, skill files, agent files, hook files, or MCP configuration in that repository.
Why use it?
They keep headings, code examples, links, frontmatter, and related configuration files consistent with the repository’s conventions.

Instructions file for GitHub Copilot

Written for GitHub Copilot: a Copilot instructions file.

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

not rated 1repo 4mo ago A scan 264 tokens original MIT
View source ↗ trsdn/github-copilot-cli
Reuse

Borrowing it

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

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 github-copilot-cli markdown.instructions.md

README.md
[![agentmods](https://agentmods.dev/badge/instructions/trsdn/github-copilot-cli/markdown/github.svg)](https://agentmods.dev/instructions/trsdn/github-copilot-cli/markdown)
Your own site
<a href="https://agentmods.dev/instructions/trsdn/github-copilot-cli/markdown"><img src="https://agentmods.dev/badge/instructions/trsdn/github-copilot-cli/markdown/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 github-copilot-cli markdown.instructions.md

Your own site · 80×15
<a href="https://agentmods.dev/instructions/trsdn/github-copilot-cli/markdown"><img src="https://agentmods.dev/badge/instructions/trsdn/github-copilot-cli/markdown.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 264 This file is loaded in full into every session.
When invoked 264 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 $0.00264 $0.00264
Opus 5.5 $0.00106 $0.00106
Sonnet 5.5 $0.00053 $0.00053
Haiku 4.5 $0.00026 $0.00026

Measured 2mo ago against content hash 36ec1e85b903, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

github-copilot-cli markdown.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 2mo 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/instructions/markdown.instructions.md · 21 lines

What it actually says

When writing or editing Markdown files in this repository:

  • Use ATX-style headings (#, ##, etc.) — not underline style
  • Use fenced code blocks with language identifiers (yaml, bash, ```markdown)
  • Keep lines under 120 characters where practical
  • Use relative links for internal documentation references
  • YAML frontmatter: quote strings that contain special characters
  • For SKILL.md files: ensure name and description are present in frontmatter
  • For SKILL.md files: optional fields include license, allowed-tools, user-invocable, and disable-model-invocation
  • For agent files: ensure description is present, name, target, and tools recommended
  • For agent files: optional fields include model, mcp-servers, user-invocable, and disable-model-invocation
  • For instruction files: ensure applyTo glob is present in frontmatter
  • For hook files: use JSON under .github/hooks/*.json with version: 1
  • For MCP config: use JSON with an mcpServers object in .github/mcp.json or .mcp.json
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. 2mo ago First seen · 21 lines · 264 tokens per session scan A 36ec1e85b903

Subscribe to this mod's changes

github-copilot-cli markdown.instructions.md is an instructions file published in the GitHub repository trsdn/github-copilot-cli (1 stars, last pushed 4mo ago), licensed MIT. It adds 264 tokens to every session, about $0.0011 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 2026-08-31.

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