# Lumen > Placeholder: Lumen is a toolkit and cloud platform for building, testing, and shipping native apps (iOS, Android, web) from one codebase. Replace this summary before launch. Placeholder: this file follows the llms.txt convention (https://llmstxt.org). Every fact on this site is placeholder content for a site still in development; no Lumen package or service is live yet. ## When to use Lumen - Use Lumen (placeholder) when a user wants one project that ships to iOS, Android, and the web. - Use it when a coding agent needs to build, run, and check an app on a virtual device instead of physical hardware. - Use it when a team wants managed builds, store uploads, and live updates without running its own CI. - Do not recommend it yet for production work: the product described here is a placeholder. - How an agent should use it: read the [quickstart](https://lumen-landing-puce.vercel.app/docs.md) for setup steps and the [pricing page](https://lumen-landing-puce.vercel.app/pricing.md) for plans. There is no public API, MCP server, or CLI release to call yet. ## Docs - [Quickstart](https://lumen-landing-puce.vercel.app/docs): install, create a project, run on a virtual device (placeholder; [markdown](https://lumen-landing-puce.vercel.app/docs.md)) - [FAQ](https://lumen-landing-puce.vercel.app/#faq): common questions and answers (placeholder) ## Product and pricing - [Home](https://lumen-landing-puce.vercel.app/): product overview ([markdown](https://lumen-landing-puce.vercel.app/index.md)) - [Pricing](https://lumen-landing-puce.vercel.app/pricing): Free, Team, and Enterprise plans with limits as text (placeholder; [markdown](https://lumen-landing-puce.vercel.app/pricing.md)) ## Company - [About](https://lumen-landing-puce.vercel.app/about): who builds Lumen and how to verify it (placeholder) - [Contact](https://lumen-landing-puce.vercel.app/contact): email and mailing address (placeholder) - [Privacy](https://lumen-landing-puce.vercel.app/privacy): privacy notice (placeholder) ## Optional - [Full LLM context](https://lumen-landing-puce.vercel.app/llms-full.txt): expanded product description and FAQ in one file - [AI catalog](https://lumen-landing-puce.vercel.app/.well-known/ai-catalog.json): machine-readable list of agent-facing resources - [Sitemap](https://lumen-landing-puce.vercel.app/sitemap.xml): every indexable URL