Tips, tricks, and lessons from building software.

Tips, tricks, and lessons from building software — a personal dev blog by Tommy.

Bootstrapping a Project with /init

September 9, 2026· 2 min read·claude-codeslash-commandssetupproductivity

Run /init to generate a CLAUDE.md that teaches Claude how your project works.

Managing Tool Permissions with /permissions

September 9, 2026· 2 min read·claude-codeslash-commandspermissionscli

Control what Claude can do without asking, using allow and deny rules through /permissions.

Checking Costs and Usage with /usage

September 9, 2026· 2 min read·claude-codeslash-commandsproductivitycli

See how much you're using and spending in a session with the /usage command.

Resuming Past Sessions with /resume and --continue

September 9, 2026· 2 min read·claude-codeslash-commandscliproductivity

Pick up right where you left off using /resume in-session or the continue and resume flags from the shell.

Writing Your First Custom Slash Command

September 9, 2026· 2 min read·claude-codeslash-commandsproductivitycli

Turn a prompt you type over and over into a reusable slash command with a single Markdown file.

Passing Arguments to Custom Commands with $ARGUMENTS

September 9, 2026· 2 min read·claude-codeslash-commandsproductivitycli

Make custom commands flexible by feeding them input through $ARGUMENTS or positional $1, $2 slots.