Day 14

Loop Mode

Automate repetitive tasks — generate tests for every function, document every endpoint, refactor every file.

0 / 4 tasks

What is Loop mode?

Loop mode (invoked with `/loop`) runs a task repeatedly over a set of inputs — files, functions, endpoints, etc. It's perfect for tasks where the logic is the same but the target changes. Think: 'add docstrings to every function' or 'generate tests for every endpoint'.

Loop examples

bash

# Loop over all Python files and add type hints
claude
> /loop For each Python file in app/services/, add type hints to all functions. Process one file at a time.

# Loop over API endpoints and generate tests
> /loop For each endpoint in app/api/, generate a corresponding test file in tests/api/. Use the existing test_users.py as a template.

# Loop over a list
> /loop I have these 5 database tables: users, posts, comments, tags, attachments. For each one, generate a Pydantic schema in app/schemas/.

Practice Tasks

0 / 4

Loop over files medium

Use /loop to process a set of files in your project (add type hints, docstrings, or tests to each).

Loop over a list medium

Give Claude a list (endpoints, models, commands) and loop through generating something for each.

Loop with a template hard

Point Claude to an existing example and loop-generate similar items following that template.

Loop with conditions hard

Set up a loop that skips files already processed (e.g. that already have tests).

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