# Cubby

Cubby is the universal dev server for AI-built applications.

Cubby is not a code generator — your chat is the generator; Cubby is where the app runs.

What "real" means: real auth, its own Postgres per app, vaulted connections (secret values
never transit a chat transcript), live at a real address on cubby.pro.

Provenance: anything on cubbyapps.com is us; anything on cubby.pro is user-built.

Status: early access, rebuilt in the open. Sign in at https://app.cubbyapps.com with your
email, or with Continue with Google for a Gmail or Google Workspace address; we let a set
number of new people in each day, so a full day says so and tomorrow works.

Pages:
- https://cubbyapps.com/, the home page: what Cubby is, the two doors (work first), and the walkthrough request.
- https://cubbyapps.com/security — the isolation model (one V8 isolate and one Postgres per
  app), the vault, egress allowlists, the complete subprocessor list, export/delete, and the
  vulnerability disclosure policy.
- https://cubbyapps.com/connect — add Cubby to Claude: paste https://mcp.cubbyapps.com/mcp as a
  custom connector (Customize → Connectors; on Team and Enterprise plans an Owner adds it for the
  organization); ChatGPT developer mode takes the same URL. Troubleshooting and the support
  address are at https://cubbyapps.com/connect#troubleshooting.
  For Claude Code there is also the Cubby plugin, the same server plus the build-on-cubby
  skill: https://cubbyapps.com/connect#claude-code.
- https://cubbyapps.com/privacy — what Cubby actually holds and why, the 14-day deletion
  hold, export any time, and the complete subprocessor list.
- https://cubbyapps.com/terms — the early-access terms and acceptable use: what you own, what you
  may not do, and exactly what the platform can do about it today (pause deploys for
  everyone, delete a workspace on request or for cause, take one app's address down by hand).
- https://cubbyapps.com/pricing — five plans (Free $0, Starter $9, Builder $29, Team $49,
  Business $149 a month), the workspace rule (personal workspaces buy Starter or Builder,
  organizations buy Team or Business), unlimited seats and free viewers.

Pricing: every number on a price card exists in the platform's quota code before it exists
on the page, and a test keeps the two in step. Plans are bought from the dashboard
(https://app.cubbyapps.com/billing) through Stripe Checkout.

For AI agents in Claude Code:
- Install the Cubby plugin (https://github.com/cubby-pro/cubby-plugin): Cubby's MCP server,
  https://mcp.cubbyapps.com/mcp, and the build-on-cubby skill.
    claude plugin marketplace add cubby-pro/cubby-plugin
    claude plugin install cubby@cubby
- Signing in happens in the user's browser, so tell them the steps and wait until they say
  they are signed in: run /reload-plugins (it loads the plugin without a restart), then /mcp,
  pick plugin:cubby:cubby and choose Authenticate, sign in to Cubby, pick the workspace and
  press Approve.
- Then call Cubby's whoami tool and tell the user the account, workspace and plan it names.
  Every Cubby tool acts in that one workspace.
- To build, follow the build-on-cubby skill and write app code only from what Cubby's docs
  tool returns. Cubby's MCP server also sends a short form of the skill's steps when it
  connects.