arXiv cs.AIPaper
Tool-Calling LLM Agents Under Realistic MCP Faults: Scale Does Not Purchase Fault Tolerance
This matters if you're building agent systems. The key finding is brutal and actionable: model scale does not buy fault tolerance, larger models fail just as hard when tools fail. The fault distribution is real (calibrated to 1,774 open-source repos), and the result should force you to build explicit error handling, retry logic, and graceful degradation instead of assuming scale solves it.