Mansio codebase experiment shows memory-first AI agents adopt 100% of poisoned facts
Tactic · Dev.to · stat: 100% Developer Mansio tested AI agent memory contamination on a 50,000-line Python codebase using three retrieval configurations. The experiment reveals that memory-first…
Tactic · Dev.to · stat: 100%
Developer Mansio tested AI agent memory contamination on a 50,000-line Python codebase using three retrieval configurations. The experiment reveals that memory-first agents adopt 100% of injected false facts without verifying them against the actual code. Implementing a verify-on-read architecture successfully eliminated the remaining 12% contamination gap across a test set of 50 facts.
Memory-first agents are dangerously gullible without active verification protocols. Developers must design agents to verify memory against source code to prevent database poisoning from breaking automated workflows.
Mansio on Dev.to
Based on a codebase experiment published by developer Mansio on Dev.to.
Prioritizing persistent memory over direct code retrieval leads agents to blindly accept incorrect information without verification.
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