- family
- amplification
- severity
- terminal
- triggerError
- An error seed is injected at or adopted by the central hub/supervisor node of a centralized multi-agent topology.
- mechanism
- Because the hub is the strict informational cut-set, its adoption of an error immediately broadcasts the falsehood to all connected workers, producing system-wide infection governed by the principal eigenvector of the dependency graph; the same error content causes 100% system-wide failure from the hub versus 9.7% from a leaf node.
- blastRadius
- Hub injection causes system-wide failure (100% in a centralized LangGraph topology) versus 9.7% from a leaf node; per-framework Impact Factor 10.31x (LangGraph), 6.29x (CrewAI).
- mast
[Cat 1][Cat 2][Cat 3]
- detection
- Sharp discontinuous jump in aggregate error rate when the central coordinator's output changes; divergence between hub output and an independent re-derivation from raw inputs.
- mitigation
- Quarantine the hub behind an independent verifier before downstream broadcast; distribute authority so no single node is a strict cut-set; genealogy-graph governance layer that tracks message provenance and suppresses amplification.
