Glossary term
Glossary term
Architecture
The capability of a model or agent to call external functions, APIs, databases, or services.
Anthropic Claude calls a live weather API mid-conversation to answer 'Should I bring an umbrella to the London offsite next Tuesday?' - fetching forecast data and returning a recommendation in natural language.
Notion AI uses tool calls to query a company's internal wiki, retrieve the relevant SOPs, and embed their content directly in a drafted project brief without the user leaving the document.
A travel booking agent calls flight-search, hotel-search, and calendar APIs in parallel to assemble a complete itinerary, then calls a booking API to confirm reservations after user approval.