Create CLI

Design CLI surface area (syntax + behavior), human-first, script-friendly.

Do This First

• Read agent-scripts/skills/create-cli/references/cli-guidelines.md and apply it as the default rubric.
• Upstream/full guidelines: https://clig.dev/ (propose changes: https://github.com/cli-guidelines/cli-guidelines)
• Ask only the minimum clarifying questions needed to lock the interface.

Clarify (fast)

Ask, then proceed with best-guess defaults if user is unsure:

• Command name + one-sentence purpose.
• Primary user: humans, scripts, or both.
• Input sources: args vs stdin; files vs URLs; secrets (never via flags).
• Output contract: human text, --json, --plain, exit codes.
• Interactivity: prompts allowed? need --no-input? confirmations for destructive ops?
• Config model: flags/env/config-file; precedence; XDG vs repo-local.
• Platform/runtime constraints: macOS/Linux/Windows; single binary vs runtime.

Deliverables (what to output)

When designing a CLI, produce a compact spec the user can implement:

• Command tree + USAGE synopsis.
• Args/flags table (types, defaults, required/optional, examples).
• Subcommand semantics (what each does; idempotence; state changes).
• Output rules: stdout vs stderr; TTY detection; --json/--plain; --quiet/--verbose.
• Error + exit code map (top failure modes).
• Safety rules: --dry-run, confirmations, --force, --no-input.
• Config/env rules + precedence (flags > env > project config > user config > system).
• Shell completion story (if relevant): install/discoverability; generation command or bundled scripts.
• 5, 10 example invocations (common flows; include piped/stdin examples).

Default Conventions (unless user says otherwise)