Production Engineering: 6 Rules for Tool Result Freshness in Agents
blaizedsouza · x · 2026-08-23
A developer shares practical production experience on ensuring the reliability of agent tool calls, focusing on checking result 'freshness.' The core principle is 'Truth has an expiry.' The post offers 6 specific rules: attach timestamps to results, set max age per tool, refetch when stale, mark cached results, avoid silently mixing fresh/stale facts, and alert on frequent freshness misses. It notes that price and inventory data require stricter aging than policy docs.
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