AI engineering glossary · Agents tools MCP
What is tool registry?
Tool registry: A central list of all tools an agent may use, with each tool's name, description and input format. The application reads it to show tools to the model and to route a requested call to the right function, and it is where tools are added, removed or permission-checked.
Tool registry: an example
A dictionary {'get_weather': fn1, 'send_email': fn2} plus a JSON schema for each is passed to the model at every call.
Related terms
More Agents tools MCP terms
Where you learn it
Tool registry is part of the AI Engineering Program, which teaches it with notes, a hands-on lab and an exam. The first lesson is free.