What is mcp_mother_skills copilot-instructions.md?

Instructions for an MCP server that detects a project's technology stack and provisions skills for AI coding agents such as Claude and GitHub Copilot. MCP is a standard way for tools and agents to communicate.

Use it when setting up or maintaining this MCP server, detecting project technologies, installing agent-specific skills, or updating its configuration.

It explains the server's startup process, project detection, skill registry, and installation flow so the server can provide relevant coding guidance.

How dmgrok/mcp_mother_skills configures GitHub Copilot

Reuse

Borrowing it

Nothing to install: this file belongs to dmgrok/mcp_mother_skills. 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/dmgrok/mcp_mother_skills/main/.github/copilot-instructions.md

Clone the repo

git clone --depth 1 https://github.com/dmgrok/mcp_mother_skills

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.

README.md

[![agentmods](https://agentmods.dev/badge/instructions/dmgrok/mcp_mother_skills/copilot-instructions/github.svg)](https://agentmods.dev/instructions/dmgrok/mcp_mother_skills/copilot-instructions)

Your own site

<a href="https://agentmods.dev/instructions/dmgrok/mcp_mother_skills/copilot-instructions"><img src="https://agentmods.dev/badge/instructions/dmgrok/mcp_mother_skills/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.

Your own site · 80×15

<a href="https://agentmods.dev/instructions/dmgrok/mcp_mother_skills/copilot-instructions"><img src="https://agentmods.dev/badge/instructions/dmgrok/mcp_mother_skills/copilot-instructions.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 1,469 This file is loaded in full into every session.

When invoked 1,469 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.

Model	Per session	Once invoked
Fable 5.1	$0.01469	$0.01469
Opus 5.5	$0.00588	$0.00588
Sonnet 5.5	$0.00294	$0.00294
Haiku 4.5	$0.00147	$0.00147

Measured 2mo ago against content hash fd7a96bd5899, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

mcp_mother_skills 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 · 145 lines

How it starts

The opening of the file, as written. The whole thing — 145 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Mother MCP Skills - AI Coding Instructions

Startup

Only at the very start of a NEW conversation (when no context exists yet), call setup (for first-time use) or sync_skills (for ongoing updates) to ensure project-relevant skills are loaded. Do NOT call these repeatedly during the same conversation unless explicitly requested by the user.

Project Overview

This is an MCP (Model Context Protocol) server that dynamically provisions AI agent skills based on project tech stack detection. It supports both Claude and GitHub Copilot agents.

Core Architecture

index.ts               → MCP server entry, tool definitions, request routing
├── agent-detector.ts       → Detects Claude vs Copilot (env vars, client info, project structure)
├── project-detector.ts     → Scans files to detect tech stack (packages, configs, README)
├── enhanced-detector.ts    → Tiered detection: GitHub SBOM → Specfy → Local fallback
├── github-sbom-client.ts   → GitHub SBOM API client with PURL parsing
├── registry-client.ts      → Fetches skills from GitHub registries with caching
├── skill-installer.ts      → Downloads/installs skills to agent-specific paths
├── config-manager.ts       → YAML config handling (.mcp/mother/)
├── agent-profiles.ts       → Agent path configurations (claude → .claude/, copilot → .github/)
└── types.ts                → All shared TypeScript interfaces

Data Flow

sync_skills tool called → EnhancedProjectDetector uses 3-tier detection (GitHub SBOM → Specfy → Local) → matches against RegistryClient skills → SkillInstaller downloads to .github/skills or .claude/skills

Development Commands

npm run build      # TypeScript compilation to dist/
npm run dev        # Run with tsx (no compile step)
npm test           # Vitest test suite
npm run test:watch # Watch mode for TDD

Key Patterns

Module System

ESM-only ("type": "module" in package.json)
All imports must use .js extension: import { X } from './types.js'
Target: ES2022 with NodeNext module resolution

Read the full file on GitHub · 145 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.

2mo ago First seen · 145 lines · 1,469 tokens per session scan A fd7a96bd5899

Subscribe to this mod's changes

mcp_mother_skills copilot-instructions.md is an instructions file published in the GitHub repository dmgrok/mcp_mother_skills (4 stars, last pushed 7d ago), licensed MIT. It adds 1,469 tokens to every session, about $0.0059 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.

Building agents agent agent-skills ai-agents developer-tools mcp skills

mcp_mother_skills copilot-instructions.md next to 6 instructions from other repositories
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mcp_mother_skills: Instructions file for GitHub Copilot