Unverified50% confidenceFactExact time
Tool calling refers to the mechanism by which an Agent requests the execution of an external function through a structured message and has the result returned; the returned content enters the conversation history as a message with role: 'tool' and from then on permanently occupies the context.
1
Sources
50%
Confidence
Long-term
Relevance
10/14/2026
First Seen
Sources
Related Entities
Related Claims
UnverifiedDuring multi-turn tool calls, each tool execution result is appended to the conversation history as a new tool_result message, and the model reads the outputs of previous steps from the conversation context rather than retaining intermediate values in internal memory.76% similarVerifiedAfter the client receives the tool execution result, it needs to construct a message with the role set to tool, carrying the corresponding tool_call_id and execution result to send back to the model.75% similarUnverifiedIn the LangChain framework, Tool call results are appended to the message chain via ToolMessage objects.74% similarVerifiedFunction calling (tool calling) refers to the ability of a large language model to proactively request the invocation of external functions or APIs during the generation of a response.74% similarUnverifiedThe scope of forced tool calling (tool_choice) is a single generation (completion) rather than the entire session, so it must be re-specified on every call to the model.73% similar
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