RedThread: Distinguishing Chat Safety from Tool Call Safety
Apprehensive-Zone148 · reddit · 2026-08-28
The author built RedThread, an early open-source CLI designed to test LLM agents using adversarial prompts and tool paths. The key insight is that a chat response can appear safe while the agent still executes a malicious instruction via a tool call. This shifts the perspective on prompt injection: visible answers are insufficient once models can touch code or external systems. RedThread allows for repeatable attempts, trace keeping, and replaying failures to refine prompts and tool boundaries.
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