dans-blog

Best practices for Remotion - Video creation in React

Generate and judge DanLevy.net article translations with AI SDK/OpenRouter candidate models, locale-prefixed Astro routes, and full Git provenance. Use when translating posts, adding i18n candidates, judging translations, preserving messy model history, or debugging translated article routing.

Use Langfuse with TypeScript LLM apps, especially Vercel AI SDK, Mastra, and REST API integrations. Trigger when Codex needs to add or debug Langfuse observability for AI SDK generateText/streamText telemetry, OpenTelemetry setup with @ai-sdk/otel and @langfuse/otel, Mastra observability with @mastra/langfuse, Mastra-to-AI-SDK streaming via @mastra/ai-sdk, RESTful management of prompts/datasets/scores/annotation queues, prompt/version metadata, datasets/evals, trace verification, or safe Langfuse environment configuration.

Comprehensive Mastra framework guide for building agents, workflows, tools, memory, workspaces, and storage with current APIs. Use for documentation lookup, API verification, TypeScript setup, common errors, migrations, and `mastra api` CLI tasks: inspect or call resources on local, Mastra platform, or remote servers.

Run iterative DanLevy.net translation eval improvement loops: baseline requested i18n eval commands, inspect raw streams and judge JSON, research prompt/QA ideas, tune prompts, validation, and pre/post-processing, rerun, measure, and record findings without confusing medium polish with hard failures.

Write DanLevy.net articles and blog posts in Dan Levy's voice, structure, humor, technical taste, and Astro MDX conventions. Use when Codex needs to draft, rewrite, expand, polish, or create non-quiz posts for this blog; create matching frontmatter, title/subtitle/tag/category metadata, post directory naming, image concepts, and social/cover image variants. For quiz posts, use the quiz-writing skill instead.

Write engaging, educational quiz posts for DanLevy.net