Anthropic Plugin

Claude models integration for elizaOS

The Anthropic plugin provides access to Claude models for text generation. Note that it does not support embeddings, so you’ll need a fallback plugin.

Features

• Claude 3 models - Access to Claude 3 Opus, Sonnet, and Haiku
• Long context - Up to 200k tokens context window
• XML formatting - Optimized for structured responses
• Safety features - Built-in content moderation

Installation

elizaos plugins add @elizaos/plugin-anthropic

Configuration

Environment Variables

# Required
ANTHROPIC_API_KEY=sk-ant-...

# Optional model configuration
# You can use any available Anthropic model
ANTHROPIC_SMALL_MODEL=claude-3-haiku-20240307      # Default: claude-3-haiku-20240307
ANTHROPIC_LARGE_MODEL=claude-3-5-sonnet-latest     # Default: claude-3-5-sonnet-latest

# Examples of other available models:
# ANTHROPIC_SMALL_MODEL=claude-3-haiku-20240307
# ANTHROPIC_LARGE_MODEL=claude-3-opus-20240229
# ANTHROPIC_LARGE_MODEL=claude-3-5-sonnet-20241022
# ANTHROPIC_LARGE_MODEL=claude-3-5-haiku-20241022

Character Configuration

{
  "name": "MyAgent",
  "plugins": [
    "@elizaos/plugin-anthropic",
    "@elizaos/plugin-openai"  // For embeddings
  ]
}

Supported Operations

Operation	Support	Notes
TEXT_GENERATION	✅	All Claude models
EMBEDDING	❌	Use fallback plugin
OBJECT_GENERATION	✅	Via XML formatting

Important: Embedding Fallback

Since Anthropic doesn’t provide embedding models, always include a fallback:

{
  "plugins": [
    "@elizaos/plugin-anthropic",  // Primary for text
    "@elizaos/plugin-openai"       // Fallback for embeddings
  ]
}

Model Configuration

The plugin uses two model categories:

• SMALL_MODEL: For faster, cost-effective responses
• LARGE_MODEL: For complex reasoning and best quality

You can use any available Claude model, including:

• Claude 3.5 Sonnet (latest and dated versions)
• Claude 3 Opus, Sonnet, and Haiku
• Claude 3.5 Haiku
• Any new models Anthropic releases

Usage Tips

1. XML Templates - Claude excels at XML-formatted responses
2. System Prompts - Effective for character personality
3. Context Management - Leverage the 200k token window

External Resources

• Plugin Source
• Anthropic API Documentation
• Model Comparison