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A capability where the model is given a schema of available functions or tools and chooses when to invoke one, with what arguments, based on the user request. The runtime executes the function and returns the result to the model, which then writes a final response. Function calling is the foundation under most agents and copilots.
Every modern AI assistant uses function calling. AI engineering, AI security, and AI PM roles all need fluency in how to design and validate the function schema.
A capability where the model is given a schema of available functions or tools and chooses when to invoke one, with what arguments, based on the user request. The runtime executes the function and returns the result to the model, which then writes a final response. Function calling is the foundation under most agents and copilots.
Every modern AI assistant uses function calling. AI engineering, AI security, and AI PM roles all need fluency in how to design and validate the function schema.
Definitions are original explanations written for career development purposes. For authoritative technical definitions, refer to NIST, ISO, or the relevant standards body.
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