SIGNALAI·May 28, 2026, 4:00 AMSignal75Short term

Do Agents Know What They Can't Do? Evaluating Feasibility Awareness in Tool-Using Agents

Source: arXiv cs.AI

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Do Agents Know What They Can't Do? Evaluating Feasibility Awareness in Tool-Using Agents

arXiv:2605.28532v1 Announce Type: new Abstract: Tool-using agents often incur substantial computational cost due to long reasoning chains and iterative tool usage. In practical scenarios, many tasks become infeasible under constrained tool environments, where the capabilities required for successful task completion are unavailable. Detecting infeasible tasks and stopping execution early can significantly reduce unnecessary execution cost. In this work, we propose FeasiGen, an automatic pipeline for constructing infeasible agent tasks by identifying the critical tools required for successful ta

Why this matters
Why now

The proliferation of more complex AI agents and tool environments necessitates better computational efficiency and task management, making early infeasibility detection critical.

Why it’s important

This research addresses a core limitation in current AI agent development, reducing computational waste, improving reliability, and enabling more effective deployment in real-world scenarios.

What changes

AI agents can now more intelligently assess their capabilities and the feasibility of tasks, leading to more efficient execution and a reduced likelihood of costly failures in constrained environments.

Winners
  • · AI Agent developers
  • · Cloud providers (reduced compute waste)
  • · Industries deploying AI agents
Losers
  • · AI agents without feasibility awareness
  • · Inefficient compute models
Second-order effects
Direct

Tool-using agents will experience reduced computational costs and faster task completion by avoiding infeasible operations.

Second

This efficiency gain will enable the deployment of AI agents in more complex and resource-constrained environments, expanding their practical applications.

Third

Improved agent reliability and cost-effectiveness could accelerate the development and adoption of fully autonomous AI systems across various industries.

Editorial confidence: 90 / 100 · Structural impact: 60 / 100
Original report

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Read at arXiv cs.AI
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