Tool Calling

Opening — Why this matters now LLM-powered agents are no longer a novelty. They calculate loans, file expenses, query databases, orchestrate workflows, and—when things go wrong—quietly fabricate tool calls that look correct but aren’t. Unlike textual hallucinations, tool-calling hallucinations don’t merely misinform users; they bypass security controls, corrupt data, and undermine auditability. In short: once agents touch real systems, hallucinations become operational risk. ...

Introduction: From Reaction to Proaction Imagine an assistant that doesn’t wait for your command. It notices you’re standing by a bus stop late at night and proactively checks the next bus arrival. If it’s too far off, it suggests calling a ride instead. Welcome to the world of ContextAgent — a proactive, context-aware Large Language Model (LLM) agent designed to act before you’re forced to ask. While most LLM agents still require explicit prompts and work in tightly scoped environments like desktops, ContextAgent leverages open-world sensory inputs (from devices like smart glasses, earphones, and smartphones) to understand user context and offer unobtrusive help. ...