What is mvn-mcp-server copilot-instructions.md?

A set of GitHub Copilot instructions for a Python MCP server that works with Maven Central, the main public repository for Java and related project dependencies. It describes the project structure, coding rules, and development checks.

Use it when adding or changing Maven dependency tools, version checks, security scans, or dependency analysis. It also helps prepare and verify Python code with type checking, linting, formatting, and tests.

It gives Copilot project-specific guidance so its suggestions follow the server’s architecture and code standards. It also defines checks to run before committing changes.

How danielscholl/mvn-mcp-server configures GitHub Copilot

Reuse

Borrowing it

Nothing to install: this file belongs to danielscholl/mvn-mcp-server. 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/danielscholl/mvn-mcp-server/main/.github/copilot-instructions.md

Clone the repo

git clone --depth 1 https://github.com/danielscholl/mvn-mcp-server

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/danielscholl/mvn-mcp-server/copilot-instructions.svg)](https://agentmods.dev/instructions/danielscholl/mvn-mcp-server/copilot-instructions)

Your own site

<a href="https://agentmods.dev/instructions/danielscholl/mvn-mcp-server/copilot-instructions"><img src="https://agentmods.dev/badge/instructions/danielscholl/mvn-mcp-server/copilot-instructions.svg" alt="Measured on agentmods" height="20"></a>

Per session 1,108 This file is loaded in full into every session.

When invoked 1,108 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	$0.01108	$0.01108
Opus 5	$0.00554	$0.00554
Sonnet 5	$0.00222	$0.00222
Haiku 4.5	$0.00111	$0.00111

Measured 7d ago against content hash 9b832bfdaaed, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-07, from the pricing page.

Security

Grade A, and why

mvn-mcp-server 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 7d 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 · 121 lines

How it starts

The opening of the file, as written. The whole thing — 121 lines — stays where its author put it; the contents beside it link to each section on GitHub.

GitHub Copilot Instructions for Maven MCP Server

This is a Python-based Model Context Protocol (MCP) server that provides AI assistants with access to Maven Central repository capabilities. The project follows an AI-driven development workflow with strict architectural patterns.

Project Overview

Maven MCP Server enables AI assistants to interact with Maven Central for dependency management tasks. It provides tools for version checking, security scanning, and dependency analysis with intelligent caching and comprehensive responses.

Code Standards

Required Before Each Commit

Run these commands to ensure code quality:

uv run mypy .           # Type checking (must pass)
uv run flake8 src/      # Linting (must pass)
uv run black src/ tests/ # Format code
uv run pytest           # All tests must pass (70% coverage minimum)

Development Flow

Setup: uv sync && uv pip install -e .[dev]
Test: uv run pytest
Type check: uv run mypy .
Format: uv run black src/ tests/
Full check: uv run mypy . && uv run flake8 src/ && uv run pytest

Repository Structure

src/mvn_mcp_server/: Main package
- services/: Core services (Maven API, caching, version parsing)
- shared/: Common utilities and data types
- tools/: MCP tool implementations
- server.py: FastMCP server configuration
tests/: Test suite mirroring src structure
docs/adr/: Architectural Decision Records (MUST read before major changes)
specs/: Tool specifications

Key Architectural Patterns

Synchronous Architecture: No async/await - keeps implementation simple (ADR-002)
Service Layer Pattern: Separate services for Maven API, caching, and version logic (ADR-007)
Comprehensive Single-Call: Tools return all relevant data in one response (ADR-005)
In-Memory Caching: TTL-based cache reduces Maven Central API calls (ADR-003)
Mock-Based Testing: All external calls mocked for fast, reliable tests (ADR-008)

Guidelines for Changes

Read the full file on GitHub · 121 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.

7d ago First seen · 121 lines · 1,108 tokens per session scan A 9b832bfdaaed

Subscribe to this mod's changes

mvn-mcp-server copilot-instructions.md is an instructions file published in the GitHub repository danielscholl/mvn-mcp-server (0 stars, last pushed 8mo ago), licensed MIT. It adds 1,108 tokens to every session, about $0.0055 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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Working notes and architecture documentation for the new esbuild-based build system in build/next. Use when making changes to the new build pipeline (transpile/bundle commands, NLS plugin, source-map handling, resource copying, or self-hosting watch tasks).

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mvn-mcp-server: Instructions file for GitHub Copilot