Agent Assurance Is Now Generally Available: Test AI Agents That Take Actions

TestMu AI has made Agent Assurance generally available, allowing users to begin a 14-day self-service trial to test AI agents that take actions such as calling tools, modifying files, and changing records. Agent Assurance uses the Rook CLI to analyze an agent’s code or specifications, generate functional and adversarial scenarios, execute the agent, and assess real-world effects rather than relying solely on its final response, reporting Pass, Fail, or Unable to Verify verdicts alongside an “assurance gap” for unverified criteria. Since its August 2026 launch, Rook has received ten releases adding CI-friendly access-key authentication, headless-run safeguards, CI/CD recipes, format-tolerant judgments, repeated tool-call checks, adversarial testing mapped to OWASP and MITRE risks, coding-agent integrations, local and hosted result views, expanded input sources, full masked tool-call transcripts, and Windows support. The trial includes concurrent scenario execution, 4,000 monthly credits per unit, functional and adversarial testing, evidence-backed verdicts, CI execution, shared cloud results, unlimited users, and shareable reports, while paid plans are required to continue testing after the trial ends; local scenarios and results remain stored as plain project files.

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