AppCrane is the self-hosted home for the apps your AI builds and your AI deploys. It exposes 35 appcrane_* MCP tools so any MCP client (Claude Code, Cursor, Codex) can run the full deploy lifecycle — create app, deploy to sandbox/production, manage secrets, stream logs, list releases, roll back — every action bound to a user and audit-logged. Enterprise SSO (SAML/OIDC/SCIM), Docker isolation per app, dual environments, auto-HTTPS, and a middleware hard-wall so the platform operator can't read app secrets. AGPL-3.0, one-command install on Ubuntu. A self-hosted free alternative to Heroku, Vercel, and hosted agent-deploy services like AppDeploy.