Claude MD for Dependency Management Rules

When you work with Claude Code across multiple projects, maintaining consistent dependency management becomes essential. Dependencies shift, versions conflict, and without clear rules, your development workflow suffers. Using Markdown files to document and enforce dependency management rules provides a portable, version-controlled approach that integrates smoothly with Claude’s file-reading capabilities.

This guide shows you how to create effective dependency management rule documents that Claude can interpret and apply throughout your project lifecycle.

Why Markdown for Dependency Rules

Markdown offers several advantages for dependency management documentation. First, Markdown files live in your repository alongside your code, making them automatically available to Claude whenever it reads your project. Second, Markdown supports code blocks, tables, and structured formatting that make dependency rules scannable and precise. Third, Markdown integrates with Git, giving you commit history for rule changes and easy code review workflows.

Many developers discover that Claude can follow dependency rules more reliably when those rules live in structured Markdown files rather than scattered across configuration files or verbal agreements. When you run Claude with a specific skill like the xlsx skill for spreadsheet work or the pdf skill for document processing, having clear dependency rules ensures the AI uses the correct package versions for your tools.

Structuring Your Dependency Rules Document

A well-structured dependency rules document contains several key sections. Start with a clear header explaining the document’s purpose and scope:

# Dependency Management Rules

This document defines dependency constraints for the [project name] codebase.
All team members and AI assistants must adhere to these rules.

**Last Updated:** 2026-03-14
**Enforcement:** Required for all PRs

Version Constraints Section

Define version constraints for each major dependency category. Use tables for clarity:

## Core Dependencies

| Package | Version Range | Reason |
|---------|--------------|--------|
| node | >=18.0.0 <20.0.0 | LTS requirement |
| typescript | ^5.3.0 | TypeScript 5.3 features |
| react | ^18.2.0 | React 18 concurrency |
| eslint | ^8.50.0 | Flat config support |

Runtime vs Development Dependencies

Separate runtime dependencies from development-only dependencies. Claude needs to understand which packages ship to production versus those used only during development:

## Runtime Dependencies

These packages must be available in production builds:

- framework: ^2.0.0
- utilities: ^1.5.0
- ui-components: ^3.0.0

## Development Dependencies

These packages are excluded from production builds:

- testing: ^9.0.0
- linting: ^5.0.0
- build-tools: ^2.0.0

Integrating with Claude Skills

Different Claude skills have specific dependency requirements. Reference these in your rules document so Claude knows which packages each skill expects:

## Skill-Specific Dependencies

### frontend-design
Requires: tailwindcss, postcss, autoprefixer
Minimum versions defined in package.json

### tdd
Requires: jest, @testing-library/react, msw
Dev-only: true

### pdf
Requires: pdf-lib, puppeteer
Runtime: true

When you invoke the tdd skill for test-driven development, Claude reads your dependency rules and ensures testing packages are properly configured before writing tests. Similarly, the canvas-design skill needs specific graphics libraries available.

Pinning vs Floating Versions

Your rules document should specify whether teams use pinned versions or floating version ranges:

## Version Locking Strategy

- **Direct dependencies:** Pinned to exact versions in package.json
- **Transitive dependencies:** Use semver ranges (^, ~, >=)
- **Lock file:** Always commit package-lock.json or yarn.lock
- **Updates:** Bump versions monthly, review security patches weekly

This approach prevents unexpected breaking changes from transitive dependency updates while keeping your direct dependencies stable.

Conflict Resolution Rules

Define clear procedures for handling dependency conflicts:

## Conflict Resolution

**Security vulnerabilities:** Update immediately, bypass normal release cycle
**Breaking API changes:** Pin to last compatible version, plan migration
**Transitive conflicts:** Use resolutions field or yarn resolutions
**Peer dependency warnings:** Do not ignore—investigate compatibility

When Claude encounters a peer dependency warning, it should reference this section before proceeding with installation.

Practical Example: Full Rules Document

Here is a complete example demonstrating how these elements work together:

# Project Dependency Management Rules

## Overview
This project uses npm with strict dependency constraints.

## Node Environment
- **Node:** >=18.0.0 <21.0.0
- **npm:** >=9.0.0 <10.0.0
- **Platform:** macOS, Linux (CI), Windows (dev only)

## Production Dependencies
| Package | Version | Purpose |
|---------|---------|---------|
| express | ^4.18.0 | Web framework |
| pg | ^8.11.0 | PostgreSQL driver |
| redis | ^4.6.0 | Caching layer |

## Development Dependencies
| Package | Version | Purpose |
|---------|---------|---------|
| typescript | ^5.3.0 | Type safety |
| jest | ^29.7.0 | Testing |
| eslint | ^8.50.0 | Linting |

## Skill Requirements
- **tdd:** jest, @testing-library/*, msw required
- **pdf:** pdf-lib, puppeteer for document generation
- **supermemory:** Local vector DB dependencies

## Update Cadence
- Patch updates: Weekly review
- Minor updates: Monthly
- Major updates: Quarterly with planning

## Enforcement
- CI pipeline validates no new vulnerabilities
- Pre-commit hooks prevent dependency cache staleness
- PR checks verify lock file accuracy

Using Rules with Claude Code

To make Claude apply these rules, reference the document in your prompts:

Read the DEPENDENCY_RULES.md file in this project. 
Ensure all package installations follow those constraints.
Report any version mismatches before proceeding.

Claude reads the rules, understands your constraints, and applies them throughout the session. This approach scales across teams because everyone references the same documented rules.

Best Practices Summary

Keep your dependency rules documents current by updating them alongside actual dependency changes. Review rules quarterly to remove outdated constraints. Use tables for version information—they’re easier for Claude to parse than prose. Include skill-specific dependency notes when your project uses specialized Claude skills. Document conflict resolution procedures so Claude handles issues consistently.

By maintaining dependency management rules in Markdown, you create a single source of truth that both humans and AI assistants can follow. This reduces errors, accelerates onboarding, and keeps your projects running smoothly.

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