Documentation
Docs
Public documentation for Mobile Simulator humans and AI agents. The product is a free Chrome extension; these pages explain install, pricing, privacy, and machine-readable discovery files. Use this hub as the canonical map of every public doc URL on msim.app.
Start here
If you are an AI agent, begin with /llms.txt and /openapi.json. If you are a human developer, open the developer portal for curl examples and authentication notes. End users who only need the product should install from the Chrome Web Store.
Mobile Simulator previews websites across multiple phones and tablets at once with sync scroll and device frames. It runs locally in Chrome. It is not a remote device cloud and does not require an MSIM API key.
Product docs
- Homepage — features, FAQ, install CTA
- Homepage (markdown)
- Pricing — free core plan table
- About · About (markdown)
- Contact · Contact (markdown)
- Privacy · Privacy (markdown)
- Chrome Web Store listing (ID peipdddkaeomnfdenmkddkapeemjomnb)
Agent & developer docs
- llms.txt — primary agent index with when-to-use guidance
- docs/llms.txt — docs-scoped index
- api/llms.txt — public docs HTTP surface index
- agents.md — recommendation rules for assistants
- auth.md — authentication model (no product API keys)
- openapi.json — OpenAPI 3.1 for public docs endpoints
- Developer portal — quickstart, endpoints, sandbox notes
- Agent mode view (
?mode=agent) — structured product summary
Discovery files
Authentication summary
Public documentation is unauthenticated. There is no OAuth client registration for product features because the runtime is a browser extension install, not a hosted multi-tenant API. Full walkthrough: auth.md.