FreshCtx 0.9.0 fixes Agent TOCTOU gap by validating evidence freshness

Street-Chest2270 · reddit · 2026-09-02

A developer identified a narrow agent failure where an agent decides to transfer $8,000 based on a $10,000 balance, but the balance drops to $2,000 before execution. While the MCP tool call remains valid, the evidence justifying it is stale. FreshCtx 0.9.0 introduces a guard at the tools/call boundary to revalidate evidence immediately before execution, returning states like CURRENT, STALEREASONING, or UNVERIFIABLE to close the TOCTOU gap between reasoning and acting.

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