Anthropic Claude API Pipeline

What's New in v2.1

🚀 Dynamic Model List - Now automatically fetches available models from Anthropic's API 🔄 Auto-Refresh - Model list updates hourly (configurable) 🛡️ Graceful Fallback - Uses cached/fallback models if API is unavailable

No more waiting for pipeline updates when Anthropic releases new models!

Overview

A clean, secure Anthropic Claude integration for Open WebUI. Built with DHH-inspired principles: simple, expressive, and secure by default—not security theater.

This pipeline provides seamless access to all Claude models with essential security features and zero configuration overhead.

Supported Models

Models are automatically fetched from Anthropic's /v1/models API. New models are picked up automatically when Anthropic releases them.

Fallback Models (used if API unavailable)

claude-sonnet-4-5 - Best balance of intelligence, speed, and cost
claude-haiku-4-5 - Fastest responses with near-frontier intelligence
claude-opus-4-1 - Specialized reasoning for complex tasks
claude-3-7-sonnet - Enhanced capabilities with extended thinking
claude-3-5-sonnet - Strong general-purpose model
claude-3-5-haiku - Fast and cost-effective
claude-3-opus - Previous generation flagship
claude-3-sonnet - Balanced performance
claude-3-haiku - Speed-optimized

Features

Security (Real Protection, Not Theater)

✅ SSRF Protection - Validates URLs, blocks private networks and metadata endpoints ✅ Input Validation - Prevents crashes from malformed data ✅ Secure Error Handling - User-friendly messages, no information disclosure ✅ Image Size Validation - Enforces Anthropic's 5MB limit per image

Core Functionality

✅ Dynamic Model List - Auto-fetches available models from Anthropic's API ✅ Auto-Refresh - Configurable refresh interval (default: 1 hour) ✅ Streaming Support - Real-time response streaming ✅ Multimodal - Text and image processing ✅ Retry Logic - Automatic retry with exponential backoff ✅ Graceful Fallback - Uses cached/fallback models if API is unavailable

Configuration

Simple Configuration (Two Valves)

ANTHROPIC_API_KEY - Your Anthropic API key (required)
MODEL_REFRESH_INTERVAL - Seconds between model list refreshes, 0 to disable (default: 3600)

Minimal config, maximum functionality.

License

MIT License

Contributing

Github: https://github.com/1337hero/open-webui-anthropic-api-pipe

Contributions welcome! But remember:

Before adding features, ask:

Is this solving an actual problem or a theoretical one?
Can we solve this with less code?
Are we duplicating Anthropic's existing protections?

Pull Request Guidelines:

Keep it simple
Remove code when possible
No security theater
Test with real use cases

Key changes:

Added "What's New in v2.1" section at top
Updated "Supported Models" to explain dynamic fetching
Added 3 new features to Core Functionality
Added MODEL_REFRESH_INTERVAL to Configuration