Claude plays Catan: Managing agent context with Sonnet 4.5

Key Concepts:

• Context Editing: Automatic removal of stale tool calls and results from the context window as token limits are approached.
• Memory Tool: Enables Claude to store and consult information outside the context window, creating a persistent knowledge base.
• Claude API: The application programming interface for accessing Claude's capabilities.
• Token Limits: The maximum number of tokens (units of text) that can be processed in a single context window.
• Game of Catan: A strategy board game used as a demonstration of Claude's context management capabilities.

Demonstration of Context Management Capabilities

The video introduces new features on the Claude API designed to improve context management: Context Editing and the Memory Tool. These features are demonstrated using a game of Catan, a strategy board game requiring long-term planning, negotiation, and observation.

Claude's Opponents and Knowledge Base

Claude plays against three opponents: Ace, Maven, and Scout. The Memory Tool allows Claude to build a knowledge base that persists across games. This knowledge base includes memory files containing information about each opponent's strategies. Examples given include Maven's tendency to hoard bricks and Ace's stockpile of wood.

Context Editing in Action

As the game progresses, the accumulation of trades, moves, card draws, and other events threatens to overwhelm the context window. Context editing automatically removes older, less relevant information to maintain a clean and focused context.

Game Progression and Context Management

After 75 minutes of play, Claude has processed thousands of game events. Despite this large volume of information, the context remains clean and focused due to the context editing feature. This demonstrates the effectiveness of the new context management capabilities.

Availability

These features, Context Editing and the Memory Tool, are now available on the Claude Developer Platform.

Synthesis/Conclusion

The video showcases Claude's enhanced context management capabilities through a demonstration using the game of Catan. Context editing and the memory tool enable Claude to maintain a clean and persistent knowledge base, even when processing large amounts of information over extended periods. These features are now available on the Claude Developer Platform, offering developers improved control over Claude's context.