Shenzhen University and HKUST propose ECA: evidence checks before agent actions

jiqizhixin · x · 2026-09-22

Shenzhen University and HKUST present ECA (Evidence-Carrying Multimodal Agents), addressing how one false premise ("the address is confirmed") can derail an entire agent task chain. ECA separates duties: a multimodal model understands pages/screenshots and proposes tool calls, while independent verifiers extract evidence from the original content — confirming buttons exist and match the task, and validating recipients, intent, and attachment permissions before sending. Tools execute only after evidence passes inspection, treating hallucination as an exploit rather than a text-generation problem.

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