Introducing advanced tool use on the Claude Developer Platform
Source
anthropic.com
Author
Anthropic
Date
Why it matters
If you're building agents on the Claude API with dozens of MCPThe Model Context Protocol — an open standard that lets any AI assistant plug into any tool or data source without custom integration code.Full definition → or custom tools, dynamic tool discovery lets Claude find and load the tools it needs at runtime instead of you stuffing every definition into the prompt — cutting context windowThe maximum amount of text a model can consider at once — its working memory for the current conversation or task.Full definition → bloat and tool-selection errors as your toolset grows.
Terms in this piece · Glossary
tool use — A model's ability to call external functions — run code, search the web, edit files — instead of only generating text.
MCP — The Model Context Protocol — an open standard that lets any AI assistant plug into any tool or data source without custom integration code.
context window — The maximum amount of text a model can consider at once — its working memory for the current conversation or task.
