Comprehensive API relay system with multi-tenant distribution, unified formats, and enterprise-grade key management

API Integration & Relay

CoAI.Dev's API Relay system is a core enterprise feature that provides powerful and flexible AI integration tools for developers. The system implements multi-tenant relay distribution, advanced key management, and converts 10+ different AI service formats into the standardized OpenAI API format, dramatically simplifying the integration process.

Overview

The API relay system offers:

🏢 Multi-Tenant Distribution: Independent resource and configuration management per tenant
🔑 Advanced Key Management: Flexible API key strategies with granular permissions
🔄 Unified API Format: Convert 10+ AI service formats to OpenAI standard
🛡️ Security Controls: Model restrictions, quota limits, IP whitelisting, and expiration
📊 Usage Analytics: Comprehensive tracking and billing integration
⚡ High Performance: Built-in load balancing and retry mechanisms
🎯 Cost Optimization: Intelligent routing and resource allocation

Enterprise Integration

The API relay system enables developers to focus on innovation and application development without worrying about the complexity of integrating multiple AI services, significantly accelerating development and deployment.

Key Features

Multi-Tenant Architecture

Complete Tenant Separation

Each tenant operates in a completely isolated environment:

Isolation Features:

Data Isolation: Complete separation of user data and configurations
Resource Isolation: Independent quotas and usage tracking
Security Isolation: Separate authentication and authorization
Configuration Isolation: Independent settings and customizations
Billing Isolation: Separate cost tracking and invoicing

Multi-Tenant Benefits:

{
  "tenant_isolation": {
    "data_separation": "complete",
    "resource_quotas": "independent",
    "authentication": "tenant_specific",
    "customization": "per_tenant",
    "billing": "separate_tracking"
  }
}

Use Cases:

SaaS providers serving multiple customers
Enterprise departments with separate budgets
Reseller and white-label deployments
Development, staging, and production environments
Regional or business unit separation

Advanced Key Management

Comprehensive API Key Control System:

Create and Configure API Keys

Generate API keys with granular permissions:

# Create new API key
POST /api/admin/keys
{
  "name": "Production API Key",
  "user_id": "user_12345",
  "permissions": {
    "models": ["gpt-4", "gpt-3.5-turbo", "claude-3"],
    "quota_limit": 10000,
    "rate_limits": {
      "requests_per_minute": 100,
      "tokens_per_hour": 50000
    },
    "ip_whitelist": ["192.168.1.0/24", "10.0.0.100"],
    "expiry_date": "2024-12-31T23:59:59Z"
  }
}

Model Restrictions

Control which AI models can be accessed:

Selective Access: Choose specific models for each key
Model Categories: Group models by type or provider
Dynamic Updates: Modify model access without key regeneration
Version Control: Control access to specific model versions
Cost Management: Restrict access to high-cost models

Model Access Configuration:

{
  "model_restrictions": {
    "allowed_models": [
      "gpt-4",
      "gpt-3.5-turbo",
      "claude-3-sonnet"
    ],
    "blocked_models": [
      "gpt-4-32k",
      "dall-e-3"
    ],
    "model_aliases": {
      "gpt-4-production": "gpt-4",
      "fast-model": "gpt-3.5-turbo"
    }
  }
}

Quota and Rate Limiting

Implement comprehensive usage controls:

Quota Types:

Token Limits: Maximum tokens per period
Request Limits: Maximum API calls per period
Cost Limits: Maximum spending per period
Time-based Limits: Daily, weekly, monthly quotas
Burst Limits: Short-term spike allowances

Rate Limiting Configuration:

{
  "rate_limits": {
    "requests_per_minute": 100,
    "requests_per_hour": 5000,
    "tokens_per_hour": 100000,
    "concurrent_requests": 10,
    "burst_allowance": {
      "multiplier": 2,
      "duration": "5_minutes"
    }
  }
}

IP Whitelisting and Security

Enhance security with network-level controls:

Security Features:

IP Whitelisting: Restrict access to specific IP addresses or ranges
CIDR Support: Flexible network range definitions
Geographic Restrictions: Country or region-based access control
Time-based Access: Scheduled access windows
Multi-factor Authentication: Additional security layers

IP Whitelist Configuration:

{
  "ip_restrictions": {
    "allowed_ips": [
      "192.168.1.100",
      "10.0.0.0/16",
      "203.0.113.0/24"
    ],
    "blocked_ips": [
      "suspicious.ip.range"
    ],
    "geographic_restrictions": {
      "allowed_countries": ["US", "CA", "GB"],
      "blocked_countries": ["CN", "RU"]
    }
  }
}

Unified API Format

OpenAI Compatibility Layer

Standardized Integration Experience:

// Standard OpenAI format for all providers
interface UnifiedAPIRequest {
  model: string;
  messages: ChatMessage[];
  temperature?: number;
  max_tokens?: number;
  stream?: boolean;
  // ... other OpenAI-compatible parameters
}
 
// Supported AI Providers (automatically converted)
const supportedProviders = [
  'OpenAI',
  'Anthropic Claude',
  'Google Gemini',
  'Azure OpenAI',
  'AWS Bedrock',
  'Cohere',
  'Hugging Face',
  'LocalAI',
  'Ollama',
  'Custom Models'
];

Provider Format Conversion

Intelligent Request Translation

Automatic conversion from OpenAI format to provider-specific formats:

Anthropic Claude Conversion:

{
  "openai_request": {
    "model": "gpt-4",
    "messages": [
      {"role": "user", "content": "Hello, world!"}
    ],
    "temperature": 0.7
  },
  "claude_request": {
    "model": "claude-3-sonnet-20240229",
    "max_tokens": 1000,
    "messages": [
      {"role": "user", "content": "Hello, world!"}
    ],
    "temperature": 0.7
  }
}

Google Gemini Conversion:

{
  "openai_request": {
    "model": "gpt-4",
    "messages": [
      {"role": "system", "content": "You are helpful."},
      {"role": "user", "content": "What is AI?"}
    ]
  },
  "gemini_request": {
    "model": "gemini-pro",
    "contents": [
      {
        "parts": [{"text": "You are helpful.\n\nWhat is AI?"}]
      }
    ]
  }
}

Parameter Mapping:

Temperature and randomness controls
Token limits and response lengths
Streaming and callback configurations
Context and memory management
Custom parameters and extensions

Configuration and Management

API Relay Settings

Enable/Disable Relay System

Control the relay system availability:

Admin Configuration:

Navigate to Admin Panel → System Settings → Operations
Toggle Relay API checkbox
Click Save to apply changes

Configuration Options:

{
  "relay_settings": {
    "enabled": true,
    "default_provider": "openai",
    "fallback_providers": ["anthropic", "gemini"],
    "rate_limiting": true,
    "usage_tracking": true,
    "error_logging": true
  }
}

Subscription Integration

Configure how subscriptions work with the relay API:

Subscription Options:

Include Relay: Subscription quotas cover relay API usage
Exclude Relay: Relay API requires separate elastic billing (credits)
Hybrid Model: Partial coverage with overage billing

Configuration Steps:

Go to System Settings → Operations
Configure Subscription Quota Covers Relay API option
Set billing preferences for relay usage
Apply settings and test configuration

Provider Management

Configure and manage AI service providers:

Provider Configuration:

{
  "providers": [
    {
      "name": "openai",
      "enabled": true,
      "priority": 1,
      "models": ["gpt-4", "gpt-3.5-turbo"],
      "rate_limits": {
        "requests_per_minute": 3500,
        "tokens_per_minute": 90000
      },
      "retry_config": {
        "max_retries": 3,
        "backoff_multiplier": 2
      }
    },
    {
      "name": "anthropic",
      "enabled": true,
      "priority": 2,
      "models": ["claude-3-sonnet", "claude-3-haiku"],
      "fallback_for": ["openai"]
    }
  ]
}

Monitoring and Analytics

Set up comprehensive monitoring:

Analytics Features:

Real-time usage statistics
Provider performance metrics
Error rate monitoring
Cost analysis and optimization
User behavior analytics

Monitoring Dashboard:

{
  "monitoring": {
    "real_time_metrics": true,
    "historical_data": "90_days",
    "alerts": {
      "high_error_rate": "5%",
      "quota_threshold": "90%",
      "response_time": "5_seconds"
    },
    "reporting": {
      "daily_summary": true,
      "weekly_analysis": true,
      "monthly_billing": true
    }
  }
}

Usage Examples

Basic API Integration

Standard OpenAI-Compatible Request:

curl -X POST 'https://your-domain.com/api/v1/chat/completions' \
  -H 'Authorization: Bearer your-api-key' \
  -H 'Content-Type: application/json' \
  -d '{
    "model": "gpt-4",
    "messages": [
      {
        "role": "user",
        "content": "Explain quantum computing in simple terms"
      }
    ],
    "temperature": 0.7,
    "max_tokens": 500
  }'

Response:

{
  "id": "chatcmpl-8abc123",
  "object": "chat.completion",
  "created": 1703123456,
  "model": "gpt-4",
  "choices": [
    {
      "index": 0,
      "message": {
        "role": "assistant",
        "content": "Quantum computing is a revolutionary approach to computation that..."
      },
      "finish_reason": "stop"
    }
  ],
  "usage": {
    "prompt_tokens": 12,
    "completion_tokens": 87,
    "total_tokens": 99
  }
}

Advanced Features

Multi-Model Request with Fallback:

{
  "model": "gpt-4",
  "messages": [...],
  "provider_config": {
    "primary": "openai",
    "fallback": ["anthropic", "gemini"],
    "retry_strategy": "exponential_backoff"
  }
}

Custom Model Mapping:

{
  "model": "best-model",
  "model_mapping": {
    "best-model": {
      "provider": "openai",
      "actual_model": "gpt-4",
      "parameters": {
        "temperature": 0.3
      }
    }
  }
}

Security and Compliance

Security Best Practices

API Key Security:

Regular key rotation policies
Principle of least privilege
Secure key storage and transmission
Audit logging for all key operations
Automated security scanning

Network Security:

TLS 1.3 encryption for all communications
IP whitelisting and geographic restrictions
DDoS protection and rate limiting
Web Application Firewall (WAF) integration
Regular security assessments

Compliance Features

Data Protection:

{
  "compliance": {
    "data_encryption": "AES-256",
    "data_residency": "configurable",
    "retention_policies": "customizable",
    "audit_logging": "comprehensive",
    "access_controls": "role_based",
    "privacy_controls": "gdpr_compliant"
  }
}

Regulatory Support:

GDPR compliance with data protection controls
HIPAA support for healthcare applications
SOC 2 Type II certification readiness
PCI DSS compliance for payment data
Custom compliance frameworks

Performance and Optimization

Load Balancing

Intelligent Distribution:

Round-robin and weighted distribution
Health check-based routing
Geographic load balancing
Provider performance optimization
Automatic failover mechanisms

Caching Strategies

Response Caching:

{
  "caching": {
    "enabled": true,
    "ttl": "1_hour",
    "cache_key_strategy": "request_hash",
    "providers": ["redis", "memory"],
    "invalidation": "smart"
  }
}

Monitoring and Alerts

Performance Metrics:

Response time percentiles (P50, P95, P99)
Request volume and throughput
Error rates by provider and model
Cost per request and optimization opportunities
User satisfaction and experience metrics

The API Integration & Relay system provides enterprise-grade capabilities for seamless AI service integration, enabling developers to build sophisticated applications while maintaining security, performance, and cost control. Continue with Call Records & Logging to track API usage, or explore Custom Models for private model integration.

API Integration & Relay

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