What problem does it solve? Reviewing changes to CopilotKit v2 and AG-UI integrations is risky because stale API knowledge, broken imports, and identity/thread boundary bugs can silently break the MDE AI concierge runtime. This Skill provides a disciplined review checklist that verifies claims against installed package source and types instead of memory. ## Core Features & Use Cases - Runtime Invariant Checks: Preserves v2 imports such as @copilotkit/react-core/v2, the same-origin /api/copilotkit runtime, auth, rate limits, telemetry, and agent allowlists. - Identity and Thread Safety: Flags browser-supplied user, tenant, thread, or resource IDs used as authorization and requires deterministic denial proofs for cross-user failures. - Verified Finding Discipline: Requires each v2 API defect finding to include the exact changed import, a fix restoring the verified installed surface, and verification via targeted tests plus typecheck. - Use Case: When a PR upgrades @copilotkit/runtime or changes HITL interrupt handling, run this review to confirm streaming, interrupts, and Mastra agent tool-map keys still resolve against the installed 1.55.2 packages. ## Quick Start Review this pull request for CopilotKit v2 and AG-UI regressions using the copilotkit-review checklist.