App Store Connect MCP Server

By Trial and Error Inc
The reliable bridge between App Store Connect and AI assistants

Problem

You need iOS app metrics in Claude. The "official" MCP servers are broken. Manual exports waste hours. This fixes that.

Solution

A working MCP server for App Store Connect. Built in 3 hours. No dependencies on broken packages. It just works.

Quick Start

# Clone the repo
git clone https://github.com/TrialAndErrorAI/appstore-connect-mcp
cd appstore-connect-mcp

# Install dependencies
npm install

# Build
npm run build

# Configure Claude Desktop
# Add to ~/Library/Application Support/Claude/claude_desktop_config.json:
{
  "mcpServers": {
    "appstore-connect": {
      "command": "node",
      "args": ["/path/to/appstore-connect-mcp/dist/index.js"],
      "env": {
        "APP_STORE_KEY_ID": "YOUR_KEY_ID",
        "APP_STORE_ISSUER_ID": "YOUR_ISSUER_ID",
        "APP_STORE_P8_PATH": "/path/to/key.p8"
      }
    }
  }
}

# Restart Claude Desktop

Getting App Store Connect Credentials

Go to App Store Connect
Navigate to Users and Access → Keys
Click "+" to generate a new key
Select "Admin" or "Finance" role
Download the .p8 file (ONLY downloadable once!)
Note your Key ID and Issuer ID

What You Can Ask Claude

Once configured, Claude can help you with:

Financial Metrics: "What's our iOS monthly recurring revenue?"
Subscription Analytics: "Show me active subscriber count and churn rate"
App Performance: "List all our iOS apps with their current versions"
Revenue Insights: "Calculate our ARR and growth rate"
API Health: "Test the App Store Connect connection"
Usage Monitoring: "Show API rate limit status"

More features coming soon: crash analytics, TestFlight metrics, customer reviews

Architecture

See RFC-001-architecture.md for technical details.

Project Structure

appstore-connect-mcp/
├── PRFAQ.md               # Product vision and FAQ
├── RFC-001-architecture.md # Technical specification
├── src/
│   ├── auth/             # JWT authentication
│   ├── api/              # App Store Connect client
│   ├── services/         # Domain logic
│   └── server/           # MCP server implementation
├── tests/                # Test suite
└── dist/                 # Compiled output

Development

# Install dependencies
npm install

# Run in development mode
npm run dev

# Run tests
npm test

# Build for production
npm run build

# Type check
npm run type-check

Why We Built This

Our portfolio company RenovateAI is ranked #28 in Design Tools on the App Store. We needed real-time iOS metrics in Claude to make data-driven decisions. The existing solutions failed us:

@joshuarileydev/app-store-connect-mcp-server - NPM 404 error
Manual API integration - Days of work, maintenance burden
CSV exports - Manual, error-prone, time-consuming

So we built our own. Clean, typed, reliable. In 3 hours flat.

Status

🚀 ALPHA RELEASE - MVP Complete, Ready for Testing

Completed ✅

PRFAQ written - Vision crystallized
RFC drafted - Architecture defined
Authentication module - JWT with P8 keys
API client - Rate limiting, pagination, error handling
MCP server - 8 tools exposed to Claude
Core services - App and Finance services
TypeScript setup - Full type safety
Build system - Clean compilation
Documentation - Setup guides and API docs

In Progress 🔄

Live testing with real App Store Connect account
Analytics service implementation
Comprehensive test suite
npm package publishing

Roadmap 📍

Current Status: MVP complete, awaiting App Store Connect credentials for live testing

License

MIT - Use it, modify it, sell it. Just make it work.

Available Tools

The MCP server exposes 8 tools to Claude:

Tool	Description	Status
`list_apps`	Get all apps in your account	✅ Ready
`get_app`	Get detailed app information	✅ Ready
`get_sales_report`	Fetch sales and subscription data	✅ Ready
`get_revenue_metrics`	Calculate MRR, ARR, churn	✅ Ready
`get_subscription_metrics`	Subscription analytics	✅ Ready
`get_app_analytics`	User engagement metrics	🔄 Stub
`test_connection`	Verify API access	✅ Ready
`get_api_stats`	Rate limit monitoring	✅ Ready

Troubleshooting

Common Issues

1. "Unexpected token" errors in Claude logs

Cause: Console output polluting JSON-RPC stream
Fix: Ensure no console.log statements in production code
Check: /Users/sid/Library/Logs/Claude/mcp-server-appstore-connect.log

# Look for console output in logs
tail -f ~/Library/Logs/Claude/mcp-server-appstore-connect.log

2. "Illegal scope GET" error

Cause: Apple's JWT doesn't use 'scope' field
Fix: Remove scope from JWT payload in jwt-manager.ts

The JWT payload should only include:

{
  "iss": "ISSUER_ID",
  "iat": 1234567890,
  "exp": 1234568890,
  "aud": "appstoreconnect-v1"
}

3. MCP not connecting

Troubleshooting steps:

Check credentials in Claude config
Verify P8 file has correct permissions: chmod 600 /path/to/key.p8
Test authentication manually:
```
source .env && npm run test:auth
```
Verify Claude Desktop config path: ~/Library/Application Support/Claude/claude_desktop_config.json
Restart Claude Desktop after config changes

4. Financial reports error

Common fixes:

Add version parameter: version: "1_4" for reports
Vendor number required for financial data (find in App Store Connect → Payments)
Ensure API key has "Finance" role permissions

5. Empty or missing data

Check:

App ID exists and you have access permissions
Date ranges are valid (Apple keeps limited historical data)
Reports are available for your region/app

6. Rate limiting (429 errors)

Solutions:

Built-in exponential backoff should handle this automatically
If persistent, reduce request frequency
Check API usage: use the get_api_stats tool in Claude

7. Authentication token expired

Fix: Tokens auto-refresh every 19 minutes. If issues persist:

# Clear any cached tokens and restart
rm -f ~/.appstore-connect-token-cache

Debug Mode

Enable detailed logging:

export DEBUG=appstore-connect:*
npm start

Verification Commands

# Test P8 key format
openssl pkey -in /path/to/key.p8 -text -noout

# Test API connectivity
curl -H "Authorization: Bearer $(npm run generate-token)" \
     https://api.appstoreconnect.apple.com/v1/apps

# Validate Claude config
cat ~/Library/Application\ Support/Claude/claude_desktop_config.json | jq .

Support

Issues: GitHub Issues
Discussions: Coming soon
Email: mcp@trialanderror.ai

Credits

Built by Trial and Error Inc because broken dependencies are unacceptable.

First production use: RenovateAI - The AI that understands architecture.

"We don't wait for packages to work. We build." - Trial and Error Inc

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