Engineering at Anthropic: Inside the team building reliable AI systems
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Writing effective tools for agents — with agents
Agents are only as effective as the tools we give them. We share how to write high-quality tools and evaluations, and how you can boost performance by using Claude to optimize its tools for itself.
Desktop Extensions: One-click MCP server installation for Claude Desktop
Jun 26, 2025
How we built our multi-agent research system
Jun 13, 2025
Claude Code: Best practices for agentic coding
Apr 18, 2025
The "think" tool: Enabling Claude to stop and think in complex tool use situations
Mar 20, 2025
Raising the bar on SWE-bench Verified with Claude 3.5 Sonnet
Jan 06, 2025
Building effective agents
Dec 19, 2024
Introducing Contextual Retrieval
Sep 19, 2024