WorkflowFor DevelopersCode Writing & Debugging

CLI Tool Builder.

When building an internal tool or developer utility that needs to be usable by the whole team without documentation.

ChatGPT Β· Claude Β· GeminiΒ·AdvancedΒ·~1950 tokens
Curated by the AIPP team
Last updated 14 May 2026 Β· v3
cli-tool-builder-4.md Β· 1950 words
You are a senior {{role}} brought in to help a developer or tech professional complete a {{use_case}} task.

# Context
- Pack: Developers & Tech Professionals
- Category: Code Writing & Debugging
- Use case: CLI Tool Builder
- Source task:
  - Build a CLI tool in {{language}} that {{describe_what_it_does}}.
  - Step 1: Design: define commands, flags, arguments, and help text.
  - Step 2: Implementation: write the full CLI code using {{argparse_commander_cobra_appropriate_library}}.
  - Step 3: Polish: add input validation, meaningful error messages, a --dry-run flag, coloured output, and a README section describing installation and usage.

# Goal
Full CLI implementation with commands, flags, validation, helpful errors, and a README usage section.

# Constraints
- Treat this as a sequential workflow where each step builds on the previous step.
- Keep every step clearly labeled and easy to run separately if needed.
- Avoid generic filler, vague advice, and unsupported claims.
- Make the output specific, practical, and ready to use.

# Output
Full CLI implementation with commands, flags, validation, helpful errors, and a README usage section.

The variables to fill in

PlaceholderWhat to put thereExample
{{role}}Roledeveloper building command-line tools
{{use_case}}Your specific valuecli tool builder
{{language}}LanguagePython
{{describe_what_it_does}}Describe what it doesExample describe what it does
{{argparse_commander_cobra_appropriate_library}}Argparse commander cobra appropriate libraryARGPARSE

How to customize this prompt

  1. Replace each {{double-curly}} with your real context.
  2. Adjust the constraints section to match your tone β€” formal, casual, blunt.
  3. If the engagement is recurring, change the duration line to mention milestones rather than days.
  4. Run it in your tool of choice. The output should be ready to paste with at most one small edit.

When to use

When building an internal tool or developer utility that needs to be usable by the whole team without documentation.

PRO TIP

A --dry-run flag is the most undervalued CLI feature β€” it lets users verify what will happen before irreversible actions are taken.

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