Web Hack List

Preliminary research

Never Trust the Output: semantic data pollution in AI agents and MCP

Never Trust the Output: Data Pollution in AI Agents and MCP

AI-collected research leads through 22 September 2026, including targeted additions between broader sweeps. Unranked, incomplete, not community-vetted, and subject to change.

Shows an AI agent interpreting escaped data in a structured tool result as additional fields or records, including fullwidth quote and comma spellings. Later tool calls inherit the altered semantics, while fake errors trigger recovery instructions; examples distinguish semantic data corruption from successful execution of the resulting commands.

Record

Document
Never Trust the Output: Data Pollution in AI Agents and MCP
Researcher
Slonser
Published by
Slonser
Date
Topic
AI

In the archive

Tags

This page is the archive's own catalogue record. The research is the work of Slonser, first published at the original source. Preserved copies are kept so the citation survives its host; this one was last captured on .