Staff Writer

Marcus Mbeki

Marcus Mbeki is a staff writer at The Agentic Harness covering agent failure diagnosis. Based in Mumbai, Marcus has written for The Agentic Harness since 2016.

1 story · Mumbai

Agent Failure Diagnosis

Categorizing Agent Failure Modes Across Harness Layers

Model failures usually stem from the harness scaffolding, not the AI itself.

Marcus MbekiSeptember 20, 2026

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