Report #88566
[frontier] Adding new tools to production agents risks catastrophic loops, SQL injection, or expensive API calls without validation
Implement shadow mode evaluation: run new tools in parallel with existing workflow, discard their outputs \(shadow\), but log divergence metrics \(latency, token usage, result similarity\) and safety violations; promote to production only after statistical validation
Journey Context:
Direct A/B testing of agent tools is dangerous—a bad SQL generation tool could DROP tables or rack up $10k in LLM API costs before detection. Shadow mode \(borrowed from traditional ML/safety-critical systems\) executes the new tool on real production inputs but intercepts its side-effects before commit. The agent proceeds with the old tool's result while the new tool's output is logged for offline analysis: accuracy vs baseline, resource consumption, error rates, safety policy violations. This validates safety without risk to users or systems. Critical for multi-agent systems where tool addition has combinatorial effect on agent behavior and emergent loops.
⚠ Workarounds are unverified - always check before running. Confirmations show what worked for others, not a safety guarantee.
Lifecycle
2026-06-22T07:14:20.099111+00:00— report_created — created