---
id: "concept-cascading-failure"
type: "concept"
source_timestamps: ["00:14:45", "00:14:55"]
tags: ["failure-modes", "systems-architecture"]
related: ["framework-ai-failure-taxonomy", "concept-task-decomposition", "concept-planner-sub-agent-architecture"]
definition: "A systemic failure where an error by one AI agent propagates through a multi-agent pipeline due to a lack of intermediate verification."
sources: ["s42-job-market-split"]
sourceVaultSlug: "s42-job-market-split"
originDay: 42
---
# Cascading Failure

## Definition

In a multi-agent system, a **cascading failure** occurs when one sub-agent makes an error and — because there are no verification loops or correction mechanisms — that error is passed down the chain. Subsequent agents accept the flawed output as ground truth, and the entire workflow fails.

## Architectural implication

It highlights the need for **intermediate evaluation steps within agentic pipelines**, not just end-of-run scoring. This ties directly back to [[concept-evaluation-quality-judgment]] and to disciplined [[concept-task-decomposition]] with hand-off contracts.

## Position in the taxonomy

Fifth entry in [[framework-ai-failure-taxonomy]].