llm-gateway/INTEGRATION-STATUS.md
Rene Fichtmueller 128e18b751 feat: integrate GitHub Copilot as third LLM provider via copilot-bridge
Add GitHub Copilot API proxy integration to LLM Gateway:

* Implement copilot-bridge service:
  - HTTP wrapper managing copilot-api (GitHub Copilot API proxy)
  - OpenAI-compatible /v1/chat/completions endpoint (port 3252)
  - Graceful startup and SIGTERM shutdown handling
  - Health check endpoint with service diagnostics

* Register copilot-bridge in provider fallback chain:
  - Position: After OpenAI, before free LLM APIs (tier 4)
  - Rate limit: 60 requests/min (GitHub Copilot API limit)
  - Models: gpt-4 (reasoning), gpt-3.5-turbo (medium)
  - Authentication: GitHub Copilot subscription (internal to copilot-api)

* Update PM2 ecosystem configuration:
  - Add copilot-bridge service definition (port 3252)
  - Configure COPILOT_BRIDGE_URL in gateway environment
  - Add copilot to LLM_PROVIDERS list

* Enhance deployment automation:
  - Update ensure-bridges.sh with copilot-bridge deployment
  - Copy service files from repo to /opt/copilot-bridge
  - Run npm install for copilot-api dependency

* Comprehensive documentation:
  - Expand DEPLOYMENT-BRIDGES.md with copilot-bridge section
  - Prerequisites: Node.js 20+, GitHub Copilot subscription
  - Authentication workflow: npm run auth with GitHub OAuth
  - Troubleshooting: subscription verification, auth cache reset

Provider chain now supports:
1. Ollama (local, free)
2. claude-bridge (Claude subscription)
3. openai-bridge (OpenAI subscription)
4. copilot-bridge (GitHub Copilot subscription) ← NEW
5. Free APIs: Cerebras, Groq, Mistral, NVIDIA, Cloudflare

Co-Authored-By: Claude Haiku 4.5 <noreply@anthropic.com>
2026-04-25 12:38:30 +02:00

4.9 KiB

OpenAI/ChatGPT Integration Status

COMPLETED

Code Implementation

  • openai-bridge service created at /openai-bridge/ with Node.js HTTP server

    • Wraps OpenAI CLI (openai api chat.completions.create)
    • Provides OpenAI-compatible /v1/chat/completions endpoint
    • Port: 3251 (configurable via OPENAI_BRIDGE_PORT)
    • Health check: GET /health
  • external-providers.ts updated with new providers

    • openai-bridge: GPT-4 Turbo, GPT-4, GPT-3.5-Turbo (rate limit: 90 req/min)
    • chatgpt-bridge: Same models, alternative routing path
    • Both properly configured for auth via OPENAI_API_KEY
    • No Authorization header for bridge services (handled internally)
  • ecosystem.config.cjs configured

    • openai-bridge PM2 app definition added
    • Environment variables set up for OPENAI_API_KEY, port, model
    • Integrated with llm-gateway and llm-learning services
  • Deployment automation

    • ensure-bridges.sh: Idempotent startup script
    • Auto-deploys openai-bridge on first run
    • Handles /opt/openai-bridge directory creation
    • Production-ready with timestamps and status logging
  • Documentation

    • DEPLOYMENT-BRIDGES.md: Complete deployment guide
    • Prerequisites, setup steps, configuration, verification
    • Troubleshooting guide with common issues and solutions
    • Integration details with fallback chain

Build & Testing

  • Build verification: npm run build passes without errors
  • Type checking: All TypeScript files compile successfully
  • Git commits: Changes pushed to Gitea

Commits

afe3597 feat: add automated bridge deployment script and comprehensive deployment guide
7599f33 feat: integrate OpenAI Codex and ChatGPT as primary LLM providers via subscription
e128d39 chore: add openai-bridge deployment script for Erik

🚀 READY FOR DEPLOYMENT

Next Steps on Erik (192.168.178.82)

  1. Pull latest code

    cd /opt/llm-gateway
    git pull origin main
    
  2. Run deployment automation

    bash scripts/ensure-bridges.sh
    

    Or manually:

    mkdir -p /opt/openai-bridge
    cp openai-bridge/server.js /opt/openai-bridge/
    cp openai-bridge/package.json /opt/openai-bridge/
    
  3. Configure API Key Edit /opt/llm-gateway/deploy/ecosystem.config.cjs:

    OPENAI_API_KEY: 'sk-proj-your-key-here'
    
  4. Deploy with PM2

    pm2 start deploy/ecosystem.config.cjs --update-env
    
  5. Verify

    curl http://localhost:3251/health
    

📊 Provider Fallback Chain

Request → Gateway
   ↓
1. Ollama (local, if available)
2. claude-bridge (Claude subscription)
3. openai-bridge (OpenAI subscription) ← NEW
4. chatgpt-bridge (ChatGPT alternate routing) ← NEW
5. cerebras (free tier)
6. groq (free tier)
7. mistral (free tier)
8. nvidia (free tier)
9. cloudflare (free tier)

🔒 Security Checklist

  • No API keys hardcoded in code
  • Environment variables used for secrets
  • No Authorization header for bridge services (handled internally)
  • OPENAI_API_KEY validated before use
  • Error messages sanitized (500 char limit)
  • Input validation on messages array
  • Timeout handling (300s default)
  • Buffer size limited (10MB max)

📝 Configuration Template

Add to ~/.env.local on Erik or use PM2 --update-env:

OPENAI_API_KEY=sk-proj-xxxxx...
OPENAI_BRIDGE_PORT=3251
OPENAI_MODEL=gpt-4-turbo
OPENAI_BRIDGE_URL=http://localhost:3251
CHATGPT_BRIDGE_URL=http://localhost:3251
LLM_PROVIDERS=claude,openai,chatgpt,cerebras,groq,mistral,nvidia

🎯 Integration Points

Gateway reads from:

  • external-providers.ts: Provider registry, rate limits, models
  • ecosystem.config.cjs: Environment variables
  • Environment: OPENAI_API_KEY, OPENAI_BRIDGE_URL

Bridge service exposes:

  • GET http://localhost:3251/health - Health/config status
  • POST http://localhost:3251/v1/chat/completions - OpenAI-compatible endpoint

Learning engine integrates:

  • Monitors openai-bridge response quality
  • Tracks latency and token usage
  • Auto-adjusts routing based on confidence scores

📦 Pending: Microsoft Copilot

Status: Not yet integrated (awaiting CLI tool identification)

To add Copilot once available:

  1. Follow openai-bridge pattern (wrapper around CLI)
  2. Add copilot-bridge provider in external-providers.ts
  3. Update ecosystem.config.cjs with copilot service
  4. Extend ensure-bridges.sh deployment script

🔄 Deployment Rollback

If issues occur:

pm2 stop openai-bridge
pm2 delete openai-bridge
rm -rf /opt/openai-bridge
pm2 restart llm-gateway

Status: READY FOR PRODUCTION DEPLOYMENT
Last Updated: 2026-04-25 04:32 UTC
Deployed By: Claude Autonomous Execution
Approval Required: OPENAI_API_KEY configuration only