CLI-Anything for Codex

Use this skill when the user wants Codex to act like the CLI-Anything builder.

If this skill is being used from inside the CLI-Anything repository, read ../cli-anything-plugin/HARNESS.md before implementation. That file is the full methodology source of truth. If it is not available, follow the condensed rules below.

Inputs

Accept either:

• A local source path such as ./gimp or /path/to/software

• A GitHub repository URL

Derive the software name from the local directory name after cloning if needed.

Modes

Build

Use when the user wants a new harness.

Produce this structure:

<software>/ └── agent-harness/ ├── <SOFTWARE>.md ├── setup.py └── cli_anything/ └── <software>/ ├── README.md ├── init.py ├── main.py ├── <software>_cli.py ├── core/ ├── utils/ └── tests/

Implement a stateful Click CLI with:

• one-shot subcommands

• REPL mode as the default when no subcommand is given

• --json machine-readable output

• session state with undo/redo where the target software supports it

Refine

Use when the harness already exists.

First inventory current commands and tests, then do gap analysis against the target software. Prefer:

• high-impact missing features

• easy wrappers around existing backend APIs or CLIs

• additions that compose well with existing commands

Do not remove existing commands unless the user explicitly asks for a breaking change.

Test

Plan tests before writing them. Keep both:

• test_core.py for unit coverage

• test_full_e2e.py for workflow and backend validation

When possible, test the installed command via subprocess using cli-anything-<software> rather than only module imports.

Validate

Check that the harness:

• uses the cli_anything.<software> namespace package layout

• has an installable setup.py entry point

• supports JSON output

• has a REPL default path

• documents usage and tests

Backend Rules

Prefer the real software backend over reimplementation. Wrap the actual executable or scripting interface in utils/<software>_backend.py when possible. Use synthetic reimplementation only when the project explicitly requires it or no viable native backend exists.

Packaging Rules

• Use find_namespace_packages(include=["cli_anything.*"])

• Keep cli_anything/ as a namespace package without a top-level init.py

• Expose cli-anything-<software> through console_scripts

Workflow

• Acquire the source tree locally.

• Analyze architecture, data model, existing CLIs, and GUI-to-API mappings.

• Design command groups and state model.

• Implement the harness.

• Write TEST.md , then tests, then run them.

• Update README usage docs.

• Verify local installation with pip install -e .

Output Expectations

When reporting progress or final results, include:

• target software and source path

• files added or changed

• validation commands run

• open risks or backend limitations