mastra-builder

Selects Cloudflare Workers-first architecture, infrastructure services, and model capabilities for a feature set based on dependency chains, iteration needs, and consistency principles. Use when deciding whether Pages Functions are explicitly warranted, evaluating whether a feature needs Workflows or Durable Objects, choosing model-routing needs, or reviewing architecture for deployment consistency.

Evaluates whether work is ready to ship by verifying test evidence, checking for blockers, and confirming deployment readiness. Use when deciding whether work is ready to ship, reviewing critical-path evidence, or preparing deployment.

Evaluates and enforces layered request-boundary architecture for Cloudflare Worker API routes. Use when building Worker request guards, enforcing plans or feature access, or attaching request context to downstream handlers.

Designs or builds vanilla HTML/CSS/JS pages, screens, or reusable UI patterns following the target project's visual and technical rules. Use when designing a page or screen, building a UI pattern, or reviewing frontend polish and hierarchy.

Breaks a product document or broad request into concrete, dependency-ordered implementation tasks with acceptance criteria. Use when turning product documents into implementation work, refining a broad request, or repairing a weak plan.