@corbat-tech/coding-standards-mcp

CORBAT - Coding Standards MCP

Stop repeating yourself. Start coding.

Your architecture rules, TDD workflow, and SOLID principles — injected automatically into every AI response.

The Problem

Every time you ask AI to write code, you repeat the same instructions:

"Create a payment service. Use hexagonal architecture. Follow TDD.
 Apply SOLID. Use our naming conventions. Ensure 80% coverage..."

This is tedious, error-prone, and inconsistent.

The Solution

Define your standards once. Corbat MCP injects them automatically.

You: "Create a payment service"

Corbat: ✓ Detected Java/Spring project
        ✓ Applied hexagonal architecture
        ✓ Enforced TDD workflow
        ✓ Injected SOLID principles
        ✓ Set 80%+ coverage requirement

One prompt. Full compliance.

Why Corbat MCP vs Alternatives?

Feature	Corbat MCP	Linters (ESLint, etc.)	Manual prompts
Enforces before code is written	✅	❌	❌
Architecture patterns (hexagonal, DDD)	✅	❌	⚠️
TDD workflow enforcement	✅	❌	⚠️
Task-specific guardrails	✅	❌	❌
Auto-detects your stack	✅	❌	❌
Zero repetition	✅	✅	❌

Linters catch errors after the fact. Corbat MCP prevents them.

Quick Start

Step 1 — Connect to Claude:

Claude Code	claude mcp add corbat -- npx -y @corbat-tech/coding-standards-mcp
Claude Desktop	Edit ~/.config/Claude/claude_desktop_config.json: { "mcpServers": { "corbat": { "command": "npx", "args": ["-y", "@corbat-tech/coding-standards-mcp"] } } }

Step 2 — Use it:

"Create a user service"

Corbat MCP auto-detects your stack and applies all standards. That's it.

What You Get

When you ask Claude to create code, Corbat MCP injects this context automatically:

# Task: Create payment service

## Detected
- Stack: Java 21 · Spring Boot 3 · Maven
- Task type: FEATURE
- Profile: java-spring-backend

## Guardrails

### MUST
✓ Write tests BEFORE implementation (TDD)
✓ Use hexagonal architecture (domain/application/infrastructure)
✓ Apply SOLID principles
✓ Ensure 80%+ test coverage
✓ Validate all inputs
✓ Document public APIs

### AVOID
✗ God classes (>200 lines) or god methods (>20 lines)
✗ Hard-coded configuration values
✗ Mixing business logic with infrastructure
✗ Circular dependencies between layers

## Workflow
1. CLARIFY  → Confirm requirements
2. PLAN     → Create task checklist
3. BUILD    → TDD cycle: Red → Green → Refactor
4. VERIFY   → Tests pass, linter clean
5. REVIEW   → Self-check against standards

## Naming Conventions
- Classes: PascalCase (PaymentService)
- Methods: camelCase (processPayment)
- Constants: SCREAMING_SNAKE_CASE
- Packages: lowercase (com.example.payment)

Claude now generates code that follows ALL your standards.

Task-Specific Guardrails

Corbat MCP adapts its rules based on what you're doing:

Task	MUST	AVOID
Feature	TDD, 80%+ coverage, SOLID, hexagonal	God classes, coupled layers
Bugfix	Failing test first, minimal changes	Refactoring, adding features
Refactor	Tests pass before AND after, incremental	Behavior changes, big bang
Test	AAA pattern, one assertion, descriptive names	Implementation details, flaky tests

Compatibility

Client	Status
Claude Code (CLI)	✅ Tested
Claude Desktop	✅ Tested
Cursor	⚠️ Experimental
Windsurf	⚠️ Experimental
Other MCP clients	✅ Standard protocol

Built-in Profiles

Profile	Best for	Architecture
java-spring-backend	Enterprise Java	Hexagonal + DDD
nodejs	Node.js/TypeScript APIs	Clean Architecture
python	Python/FastAPI	Clean Architecture
react	React applications	Feature-based
angular	Angular 19+ applications	Feature-based + Signals
vue	Vue 3.5+ applications	Feature-based + Composition
minimal	MVPs, prototypes	Basic standards

Auto-detection: Corbat MCP reads pom.xml, package.json, requirements.txt, etc. to select the right profile.

Customize (Optional)

Option A: Interactive generator

npx corbat-init

Option B: Manual config

Create .corbat.json in your project root:

{
  "profile": "nodejs",
  "rules": {
    "always": [
      "Use TypeScript strict mode",
      "Prefer functional programming"
    ],
    "never": [
      "Use any type"
    ]
  }
}

Available Tools

Tool	Purpose
get_context	Primary — Returns all standards for your task
validate	Check code against standards
search	Search standards documentation
profiles	List available profiles
health	Server status check

Available Prompts

Prompt	Purpose
implement	Guided implementation with TDD workflow
review	Expert code review (architecture, SOLID, security)

How It Works

┌─────────────────┐     ┌─────────────────┐     ┌─────────────────┐
│  Your Prompt    │────▶│   Corbat MCP    │────▶│  Claude + Rules │
│                 │     │                 │     │                 │
│ "Create user    │     │ 1. Detect stack │     │ Generates code  │
│  service"       │     │ 2. Classify task│     │ following ALL   │
│                 │     │ 3. Load profile │     │ your standards  │
│                 │     │ 4. Inject rules │     │                 │
└─────────────────┘     └─────────────────┘     └─────────────────┘

Included Documentation

Corbat MCP comes with 15 standards documents you can search:

• Architecture: Hexagonal, DDD, Clean Architecture
• Code Quality: SOLID, Clean Code, Naming Conventions
• Testing: TDD, Unit/Integration/E2E guidelines
• DevOps: Docker, Kubernetes, CI/CD
• Observability: Logging, Metrics, Tracing

Use search tool: "search kafka" → Returns event-driven architecture guidelines.

Troubleshooting

Claude can't find corbat

• Verify npm/npx is in PATH: which npx
• Test manually: npx @corbat-tech/coding-standards-mcp
• Restart Claude completely
• Check Claude's MCP logs

Wrong stack detected

Override with .corbat.json:

{ "profile": "nodejs" }

Or specify in prompt: "...using profile nodejs"

Standards not being applied

• Check if .corbat.json exists in project root
• Verify profile exists in profiles/templates/
• Try explicit: "Use corbat get_context for: your task"

Permission errors (macOS/Linux)

# Clear npx cache and retry
npx clear-npx-cache
npx @corbat-tech/coding-standards-mcp

Project Quality

Metric	Value
Test coverage	80%+
Tests passing	78
TypeScript	Strict mode
Linting	Biome
Architecture validation	dependency-cruiser

Links

• Full Documentation
• Model Context Protocol
• Report Issues

Define once. Apply everywhere. Ship faster.

Get Started · Documentation · Report Bug