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max: Instructions file for GitHub Copilot

.github/copilot-instructions.md

max copilot-instructions.md is an instructions file for GitHub Copilot from burkeholland/max. It costs 187 tokens per session, scanned A, original, MIT.

Repository instructions for building custom tools in GitHub Copilot Max, an AI coding assistant. They explain that custom tools need names different from Copilot’s built-in commands.

In plain words
What is it for?
Use it when adding or renaming Copilot Max tools. It helps choose safe tool names and update the related tool, agent, and system-message references.
Why use it?
It prevents name collisions that can stop tools from working at runtime. It also identifies the source files that must be updated when a tool is renamed.

Instructions file for GitHub Copilot

Written for GitHub Copilot: a Copilot instructions file.

This is burkeholland/max's own configuration. It tells GitHub Copilot how to work on max 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 max configures →

not rated 141repo +2 5mo ago A scan 187 tokens original MIT
View source ↗ burkeholland/max
Reuse

Borrowing it

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

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.

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README.md
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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.

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Per session 187 This file is loaded in full into every session.
When invoked 187 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 $0.00187 $0.00187
Opus 5.5 $0.00075 $0.00075
Sonnet 5.5 $0.00037 $0.00037
Haiku 4.5 $0.00019 $0.00019

Measured 2mo ago against content hash be848a80db09, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

max 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 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/copilot-instructions.md · 12 lines

What it actually says

Copilot Instructions for Max

Tool Naming

Do NOT create tools that share a name with built-in Copilot CLI tools. Copilot CLI reserves certain tool names (e.g. list_agents, read_agent, write_agent, task, bash, grep, glob, view, edit, create, etc.). If Max defines a tool with the same name, it will conflict at runtime.

When naming custom tools, use unique prefixes or alternative verbs to avoid collisions. For example:

  • list_agents → show_agent_roster
  • read_agent → get_agent_result (already done)

If you encounter a "conflicts with built-in tool" error, rename the offending tool and update all references in src/copilot/tools.ts, src/copilot/agents.ts, and src/copilot/system-message.ts.

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 · 12 lines · 187 tokens per session scan A be848a80db09

Subscribe to this mod's changes

max copilot-instructions.md is an instructions file published in the GitHub repository burkeholland/max (141 stars, last pushed 5mo ago), licensed MIT. It adds 187 tokens to every session, about $0.0007 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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