ralph

A persistent task-execution loop driven by a product requirements document, or PRD—a list of testable user stories and completion checks.

In plain words
What is it for?
It helps implement multi-step features, track acceptance criteria, add newly discovered work, delegate coding tasks, and run review and cleanup passes until the requirements are verified.
Why use it?
It keeps working through unfinished requirements and verifies each one instead of stopping after a partial implementation.

Skill for Claude CodeCodex

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

agentmods
npx agentmods add skills/jmstar85/oh-my-githubcopilot/ralph
Any agent
npx skills add jmstar85/oh-my-githubcopilot --skill ralph
Clone the repo
git clone --depth 1 https://github.com/jmstar85/oh-my-githubcopilot

Made for: Claude Code, Codex.

Per session 36 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 688 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin 92% copy Near-identical to another mod in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5 $0.00036 $0.00688
Opus 5 $0.00018 $0.00344
Sonnet 5 $0.00007 $0.00138
Haiku 4.5 $0.00004 $0.00069

Measured 3d ago against content hash d9b5cc54d8bc, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

ralph scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 3d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

Origin

This is a copy

92% identical to ralph — 2 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

.github/skills/ralph/SKILL.md · 86 lines

How it starts

The opening of the file, as written. The whole thing — 86 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Ralph

Ralph is a PRD-driven persistence loop that keeps working on a task until ALL user stories have passes: true and are reviewer-verified.

When to Use

  • Task requires guaranteed completion with verification
  • Work may span multiple iterations and needs persistence
  • Task benefits from structured PRD-driven execution

When NOT to Use

  • Full autonomous pipeline → use /omg-autopilot
  • Explore or plan before committing → use /plan
  • Quick one-shot fix → delegate to @executor

Flags

  • --no-prd: Skip PRD generation, work in legacy mode (for trivial fixes)
  • --no-deslop: Skip the mandatory post-review cleanup pass

Steps

1. PRD Setup (first iteration)

  • Check if .omg/prd.json exists via omg_read_prd
  • If none exists, generate a PRD scaffold with task-specific acceptance criteria
  • CRITICAL: Replace generic criteria with specific, testable ones
  • Initialize progress tracking

2. Pick Next Story

  • Read PRD via omg_read_prd
  • Select highest-priority story with passes: false

3. Implement Current Story

  • Delegate to @executor at appropriate complexity level
  • If sub-tasks are discovered, add as new stories to PRD

4. Verify Acceptance Criteria

  • For EACH criterion, verify with fresh evidence
  • Run relevant checks (test, build, lint, typecheck)
  • If any criterion NOT met, continue working

5. Mark Story Complete

  • Set passes: true via omg_update_story
  • Record progress in progress.txt

6. Check PRD Completion

  • Call omg_check_completion
  • If NOT all complete, loop to Step 2
  • If ALL complete, proceed to verification

7. Reviewer Verification

  • @verifier checks against specific acceptance criteria from PRD
  • @architect reviews for architectural soundness

7.5 Mandatory Cleanup Pass

  • Unless --no-deslop, run /ai-slop-cleaner on changed files only

7.6 Regression Re-verification

  • Re-run all tests after cleanup pass
  • Only proceed after regression tests pass

8. Completion

  • On approval: run /cancel for clean exit
  • On rejection: fix issues, re-verify, loop back

Read the full file on GitHub · 86 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 3d ago First seen · 86 lines · 36 tokens per session scan A d9b5cc54d8bc

Subscribe to this mod's changes

ralph is a skill published in the GitHub repository jmstar85/oh-my-githubcopilot (153 stars, last pushed 3mo ago), licensed MIT. It adds 36 tokens to every session and 688 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 0 findings. It is 92% identical to ralph, differing in 2 lines, and is treated as a copy.

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