AI Engineer · October 12, 2026

Sandbox testing: turn generated workflows into reproducible failure cases

video Agent Security Model Evaluation AI Engineering

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Why it matters

Kevin Orellana describes using a coding agent through an MCP wrapper to exercise sandbox and browser workflows, storing results in a structured database. Reported failures include encoding, file handling, and resource exhaustion. The useful testing pattern separates interface defects from execution limits and preserves a reproducible case for each finding. An agent-generated test count is not evidence of coverage, and a passing test does not prove containment.

My takeaway: Build a bounded suite around lifecycle, files, encodings, resource limits, and cleanup. Preserve inputs, environment settings, traces, and outcomes; reproduce suspected failures independently and add deterministic regressions. Keep denial-of-service tests confined to a disposable environment.

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