Create Local APIs and SQLite Projects

Combine a loopback-only service with a small database while keeping input validation, backups and schema changes visible.

Core ideas

• Bind development servers to 127.0.0.1 unless network access is deliberately required.
• Use parameterised queries and transactions instead of string-built SQL.
• Back up the database before migrations and test restoration, not only creation.

Decision rule

A local prototype should still enforce input limits and avoid exposing debug services to the Wi-Fi network.

Apply it on your phone

Build a local notes API with create, list and export operations plus a tested backup command.

Official sources

• https://docs.python.org/3/library/sqlite3.html