LLM Proxy OAuth2 Authentication

Implement enterprise-grade OAuth2 authentication for your LLM API proxies. Connect with any identity provider, manage tokens securely, and enforce fine-grained access control across all your AI services.

🔑 OIDC Support 🔄 Auto Token Refresh 👥 RBAC Integration 📊 Audit Logging

OAuth2 Authorization Flow

Standard-compliant authentication process

User Initiates Login

Client redirects to authorization endpoint

↓

Identity Provider Auth

User authenticates with IdP (Google, Okta, etc.)

↓

Token Exchange

Authorization code exchanged for tokens

↓

API Access Granted

User can now access LLM APIs via proxy

Supported Identity Providers

Integrate with your existing identity infrastructure. We support all major OAuth2 and OIDC providers out of the box.

🔵

Google

Google Workspace & Cloud Identity

🟠

Okta

Enterprise SSO & MFA

🟢

Azure AD

Microsoft Entra ID

🟣

Auth0

Universal authentication

🔴

GitHub

GitHub OAuth Apps

🟤

GitLab

Self-hosted or SaaS

⚫

OneLogin

Enterprise IAM

⚪

Custom

Any OAuth2/OIDC provider

Authentication Features

Comprehensive OAuth2 implementation with enterprise-ready features for secure API access management.

🔐

Secure Token Storage

Encrypted storage for access tokens, refresh tokens, and ID tokens with automatic rotation support.

AES-256 encryption at rest
Secure memory handling
Token expiration tracking
Automatic cleanup

🔄

Automatic Token Refresh

Seamless token refresh before expiration. Users never experience interruption in service.

Background refresh
Configurable buffer time
Graceful degradation
Refresh failure alerts

👥

Role-Based Access Control

Map OAuth scopes and claims to granular permissions for LLM API access.

Scope mapping
Group-based permissions
Model-level access
Rate limit tiers

🏢

Multi-Tenancy Support

Isolate API access per organization or team with separate OAuth configurations.

Tenant isolation
Custom OAuth per tenant
Separate key pools
Usage analytics

📊

Comprehensive Auditing

Full audit trail of all authentication events, token usage, and access patterns.

Login tracking
API access logs
Token usage metrics
SIEM integration

🛡️

Security Hardening

Built-in protections against common OAuth vulnerabilities and attack vectors.

PKCE enforcement
State parameter validation
Token binding
CORS protection

Authentication Architecture

Understand how OAuth2 integrates with your LLM proxy infrastructure

Client Layer

Web Apps Mobile Apps CLI Tools API Clients

↓ OAuth2 Flow ↓

Auth Layer

OAuth2 Server Token Validator Scope Manager Session Store

↓ Token Verification ↓

Proxy Layer

Request Router Rate Limiter Key Manager Audit Logger

↓ API Calls ↓

Provider Layer

OpenAI Anthropic Google AI Other LLMs

Quick Integration

# Configure OAuth2 for your LLM proxy
from llm_proxy.auth import OAuth2Config

config = OAuth2Config(
    provider="okta",
    client_id="your-client-id",
    client_secret="your-client-secret",
    authorization_endpoint="https://your-okta/oauth2/v1/authorize",
    token_endpoint="https://your-okta/oauth2/v1/token",
    scopes=["openid", "profile", "llm:read", "llm:write"],
    redirect_uri="https://your-proxy/callback"
)

# Initialize authenticated client
client = LLMProxyClient(
    auth=config,
    base_url="https://your-proxy.com"
)

# Make authenticated request
response = client.chat.completions.create(
    model="gpt-4",
    messages=[{"role": "user", "content": "Hello!"}]
)

Token Lifecycle Management

Complete token lifecycle from issuance to revocation with automated management and security monitoring.

🎫

Token Issuance

Validate and store tokens from IdP with encryption
🔄

Auto Refresh

Automatically refresh tokens before expiration
🔍

Validation

Verify token integrity and claims on each request
🚫

Revocation

Immediate token revocation for security incidents

Token Timeline

Issued

Active

Refresh

Expiring

Revoked