Status & known limitations
Last updated 2026-07-28
openmcp.app is a hosted runtime for the apps your AI builds. It works best with Claude on the web. A few rough edges remain — some ours, some in the AI hosts themselves — and this page lists them plainly so nothing surprises you.
Your apps and data are yours, and deleting them is one email away.
1. How the service is run
The service is run by an independent project on modest infrastructure. There is no uptime guarantee (see Terms), and short maintenance windows can happen without notice. Data is backed up daily, but please keep your own copy of anything you can’t afford to lose.
2. Where it works best
Claude on the web (claude.ai), including Cowork — the recommended path. Building, opening and operating apps all work here; this is where we test first.
Claude Desktop and Claude Code (chat)— these hosts currently have an upstream bug that can leave an app stuck on “Loading app…” in the chat surface. The fix has to come from the host; it is reported. If you hit this, open the same app on claude.ai web — same account, same data.
ChatGPT on the web (Work mode) — verified 2026-07-28 over a remote HTTPS endpoint: apps do render at full height in the chat, and a button inside an app wrote to your data successfully.
Codex and the ChatGPT desktop app — apps render here too, but adding new items by clicking inside one is still refused by the host (reported upstream). Browsing and updating work; asking the AI to add the item in chat works fine.
The engine behind this service is open source; the detailed, current version of this list lives in KNOWN-ISSUES on GitHub.
3. Signing in and sessions
Access tokens are short-lived by design. Your AI client renews them automatically in the background; occasionally — after long inactivity, or if something is revoked — it will ask you to sign in again. That re-prompt is normal and your data is unaffected.
4. Your data and deleting it
You or your AI can delete any single app at any time, from chat or from the app list. To close your account entirely, email [email protected] from the address you signed up with — we delete your apps, files and account records, as described in Privacy. This is a manual step on our side today; expect it to be done within a few days, confirmed by reply.
5. Telling us about problems
Something broken or confusing? Email [email protected] or open an issue on GitHub. Reports genuinely shape what gets fixed first.