ToolCallTerminationCondition

NexusLabs.Needlr.AgentFramework.Workflows ¶

ToolCallTerminationCondition Class¶

Terminates a workflow when an agent calls a specific tool/function during its turn. Unlike KeywordTerminationCondition which matches response text, this condition matches on structured tool call data — eliminating false positives from keywords appearing in natural language.

public sealed class ToolCallTerminationCondition : NexusLabs.Needlr.AgentFramework.IWorkflowTerminationCondition

Inheritance System.Object 🡒 ToolCallTerminationCondition

Implements NexusLabs.Needlr.AgentFramework.IWorkflowTerminationCondition

Example¶

// Declare on the reviewer agent class:
[AgentGroupChatMember("article-writing")]
[AgentTerminationCondition(typeof(ToolCallTerminationCondition), "ApproveArticle", "ReviewerAgent")]
public sealed class ReviewerAgent;

// The reviewer's instructions tell it to call ApproveArticle() when satisfied:
// "If no Critical or Major issues remain, call the ApproveArticle tool."

Remarks¶

This condition inspects NexusLabs.Needlr.AgentFramework.TerminationContext.ToolCallNames which is populated from FunctionCallContent entries in the agent's response message. The match is exact and case-sensitive on the tool name.

Designed for scenarios where an agent should signal approval or completion via a dedicated tool call rather than embedding a keyword in free text. For example, a reviewer agent calls ApproveArticle() instead of writing "APPROVED" — which avoids the problem of the LLM accidentally including the keyword in rejection text.

Constructors¶