---
title: "Ralph Hat Collections"
description: "This directory contains the embedded hat collection files packaged into the `ralph` binary."
type: skill
canonical_url: https://claudary.paisolsolutions.com/skills/readme-576
source: "Claudary"
difficulty: intermediate
author: "Claude Code Knowledge Pack"
date: 2026-07-10T11:36:42.116Z
license: CC-BY-4.0
attribution: "Ralph Hat Collections — Claudary (https://claudary.paisolsolutions.com/skills/readme-576)"
---

# Ralph Hat Collections
This directory contains the embedded hat collection files packaged into the `ralph` binary.

## Overview

# Ralph Hat Collections

This directory contains the embedded hat collection files packaged into the `ralph` binary.

The editable source of truth lives in `presets/*.yml`; these files are mirrors used for `include_str!` packaging.

## Supported Builtins

| Collection | Canonical source | Best for |
|---|---|---|
| `code-assist` | `presets/code-assist.yml` | Default implementation workflow |
| `debug` | `presets/debug.yml` | Investigation and fix verification |
| `research` | `presets/research.yml` | Read-only exploration and synthesis |
| `review` | `presets/review.yml` | Adversarial code review |
| `pdd-to-code-assist` | `presets/pdd-to-code-assist.yml` | Advanced end-to-end idea-to-code workflow |

## Internal Presets

- `hatless-baseline`
- `merge-loop`

These stay embedded for Ralph internals and testing, but are hidden from normal preset listings.

## Quick Start

```bash
ralph init --backend claude
ralph init --list-presets

ralph run -c ralph.yml -H builtin:code-assist -p "Add OAuth login"
ralph run -c ralph.yml -H builtin:debug -p "Investigate intermittent timeout"
ralph run -c ralph.yml -H builtin:research -p "Map auth architecture"
ralph run -c ralph.yml -H builtin:review -p "Review changes in src/api/"
ralph run -c ralph.yml -H builtin:pdd-to-code-assist -p "Build a new import pipeline"
```

## Notes

- `code-assist` is the recommended default for implementation work.
- `pdd-to-code-assist` is kept as an advanced, fun example workflow rather than the default recommendation.
- Historical presets now belong in documentation examples, not the builtin product surface.

---

Source: [Claudary](https://claudary.paisolsolutions.com/skills/readme-576) · https://claudary.paisolsolutions.com