Vectara, known for its agent operating system designed to support trusted enterprise AI, has launched its latest innovation: the Tool Validator for enterprise agentic systems. This new solution becomes the second member of Vectara’s Guardian Agents suite, which actively enforces governance and real-time policy controls across an organization’s AI agents and workflows. Through this addition, Vectara reinforces its broader mission of helping enterprises achieve measurable ROI from agentic deployments while steering them away from increasingly common AI-related pitfalls.
Recently, a high-profile MIT report underscored how many enterprise agentic systems are struggling to deliver expected benefits due to workflow breakdowns and inconsistent output quality. In many cases, these issues originate from flawed action plans created by agents during the earliest stages of a workflow. As the process continues, low-quality outputs worsen the problem, introducing contradictions, irrelevant information, or outright errors. Consequently, enterprises often experience reduced reliability, unnecessary resource usage, elevated costs, compromised security, and severely diminished ROI.
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To directly confront these challenges, the new Tool Validator builds on Vectara’s established expertise in AI agent accuracy and Retrieval-Augmented Generation (RAG) systems. Before an agent begins executing a workflow, the Tool Validator conducts a comprehensive review of the tools the agent intends to use. It flags any irrelevant or incorrect tool calls and alerts the agent before execution, preventing unnecessary expenses or operational damage. Moreover, the Validator recommends additional relevant tools when needed or suggests removing needless ones. Afterward, the agent updates its plan and proceeds with the workflow while keeping a detailed log of all identified errors and corrective adjustments, ensuring complete visibility and traceability.
Vectara co-founder and CEO Amr Awadallah emphasized the importance of this capability, stating, “While 2025 began with tremendous enthusiasm for the promise of AI agents, many organizations have since come to realize what Vectara has known all along: that without an overarching ‘operating system‘ to ensure accuracy, reliability and security across all of an organization’s agents, it is almost impossible for an agentic system to deliver on its promises or deliver the ROI that enterprises demand. Vectara’s new Tool Validator Guardian Agent forms a central part of this operating system for trustworthy AI by catching and correcting critical mistakes in an agent’s planning and resource usage before they happen. This reduces downstream errors and eliminates other major factors that have contributed to the 95% failure rate for enterprise AI deployments cited in the recent MIT report.”
Importantly, the Tool Validator enhances Vectara’s existing Guardian Agent the Hallucination Corrector which focuses on identifying and resolving AI hallucinations within RAG pipelines. In contrast, the Tool Validator monitors workflow planning outside the RAG system, including tool usage involving external backend systems, web searches, or other operational resources.
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Vectara Chief Product Officer Eva Nahari highlighted the stakes of tool-call accuracy, explaining, “According to our new Guardian Agents Benchmark, hallucinations or erroneous tool calls early in an agentic workflow pose a much higher risk to enterprises than a simple wrong answer from a chatbot. Tool calls have real-world impacts: they might initiate a payment, update a customer record, or take action in a production system – not just generate a response. When we tested common open-source agent frameworks, we found that tool-call accuracy was highly variable, ranging from roughly 5% to 59% depending on the task and configuration of the system. In other words, even widely adopted agent building approaches frequently end up choosing the wrong tool or calling tools unnecessarily. This creates real operational and security risks if those calls aren’t monitored and governed.”
She further concluded, “Our new Guardian Agent: Vectara Tool Validator gives enterprises the increased confidence they need to move high-ROI agentic workflows into production by automatically adjusting agents’ mistakes before they produce high-visibility, detrimental outcomes, while also ensuring visibility and traceability. This enhanced level of reliability is critical in the emerging agentic era, as AI agents will not only be assisting enterprises with crucial tasks, but will also be making critical decisions on their behalf.”
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