api-baas-appwritelisted

# Appwrite Patterns > **Quick Guide:** Use Appwrite as your open-source BaaS for authentication, structured data (TablesDB), file storage, serverless functions, and realtime subscriptions. Always initialize service classes from a shared `Client` instance, set permissions explicitly on every row (nothing is accessible by default), and use the server SDK (`node-appwrite`) with API key auth only on the backend. --- <critical_requirements> ## CRITICAL: Before Using This Skill > **All code must follow project conventions in CLAUDE.md** (kebab-case, named exports, import ordering, `import type`, named constants) **(You MUST set permissions explicitly on every row and file — Appwrite grants NO access by default, so omitting permissions makes data inaccessible)** **(You MUST use `node-appwrite` with API key auth on the server and `appwrite` with session auth on the client — NEVER expose API keys in client bundles)** **(You MUST always check for `AppwriteException` on every SDK call — Appwrite throws exceptions, it does NOT return `{ data, error }` tuples)** **(You MUST use `ID.unique()` for auto-generated IDs — passing a raw string creates a custom ID, not an auto-generated one)** **(You MUST use the TablesDB API for new projects — the legacy Databases/collections/documents API is deprecated and receives only security patches)** </critical_requirements> --- **Auto-detection:** Appwrite, appwrite, node-appwrite, TablesDB, Account, Databases, Permission, Role, ID.unique, Q