Code 2025
Katelyn Lesse – Evolving Claude APIs for Agents, Anthropic
Overview
This talk outlines Anthropic's platform evolution to empower developers in building advanced agentic systems with Claude. The core thesis is that by providing tools to harness Claude's capabilities, manage its context window effectively, and grant it access to computational resources, developers can achieve peak performance in their AI-driven applications. The platform aims to enable agents to operate more autonomously within secure, sandboxed environments.
Who should watch
- AI Engineers building agentic systems
- Product Managers defining AI product features
- Developers looking to integrate LLMs into applications
- Those interested in agent infrastructure and tooling
- Builders aiming to maximize LLM performance
Key takeaways
- Anthropic's API provides features to harness Claude's evolving capabilities, such as adjustable reasoning time and reliable tool use for both built-in and custom tools.
- Effective context window management is crucial for performance; this includes using protocols like MCP for external system interaction, memory tools for storing relevant information outside the window, and context editing to remove irrelevant data.
- Combining memory and context editing tools has shown significant performance improvements, with larger context windows further enhancing these gains.
- The platform is evolving to allow Claude more autonomy by giving it access to a computer, facilitated by a secure code execution tool that handles sandboxing and orchestration.
- Agent skills, which are collections of scripts and instructions, can be combined with tools like MCP to provide domain expertise, enabling Claude to leverage specific knowledge for tasks like web design.
- Future platform development will focus on expanding agent infrastructure, enhancing memory and context management tools, and evolving the API to match Claude's growing capabilities.
- *Claude is good at knowing when to pull context back into the window only when it actually needs it.*
- *The future of agents is letting the model work pretty autonomously within a sandbox environment.*
Notable quotes
Caitlyn Lesse, leading the Claude developer platform team at Anthropic, stated the goal is to evolve the platform to help developers build powerful agentic systems using Claude.
*Keeping the right context in the window at any given time is really really critical to getting the best outcomes from Claude.*
*We think you should just give Claude a computer and let it do its thing.*
Unofficial community note. Prefer the recording for nuance.