A command that starts a Ralph loop, which repeatedly feeds the same task back to the coding agent so it can continue improving the work across iterations.

Use it to initialize an iterative coding session, optionally setting a maximum number of iterations or a condition that signals genuine completion.

It supports longer tasks by preserving progress in files and version history instead of stopping after one attempt.

How tobiasosborne/alethfeld configures Claude Code

Reuse

Borrowing it

Nothing to install: this file belongs to tobiasosborne/alethfeld. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file

curl -O https://raw.githubusercontent.com/tobiasosborne/alethfeld/legacy/.claude/commands/ralph-loop.md

Clone the repo

git clone --depth 1 https://github.com/tobiasosborne/alethfeld

Made for: Claude Code.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

README.md

[![agentmods](https://agentmods.dev/badge/commands/tobiasosborne/alethfeld/ralph-loop/github.svg)](https://agentmods.dev/commands/tobiasosborne/alethfeld/ralph-loop)

Your own site

<a href="https://agentmods.dev/commands/tobiasosborne/alethfeld/ralph-loop"><img src="https://agentmods.dev/badge/commands/tobiasosborne/alethfeld/ralph-loop/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

Your own site · 80×15

<a href="https://agentmods.dev/commands/tobiasosborne/alethfeld/ralph-loop"><img src="https://agentmods.dev/badge/commands/tobiasosborne/alethfeld/ralph-loop.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 0 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.

When invoked 211 The whole file, excluding the scripts and references it only reads on demand.

Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.

Origin 86% 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.

Model	Per session	Once invoked
Fable 5.1	$0.00000	$0.00211
Opus 5.5	$0.00000	$0.00084
Sonnet 5.5	$0.00000	$0.00042
Haiku 4.5	$0.00000	$0.00021

Measured 2mo ago against content hash 67a6eacc2808, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

ralph-loop 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 2mo 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

86% identical to ralph-loop — 13 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.

.claude/commands/ralph-loop.md · 16 lines

What it actually says

description	argument-hint	allowed-tools	hide-from-slash-command-tool
Start Ralph Wiggum loop in current session	PROMPT [--max-iterations N] [--completion-promise TEXT]	Bash(.claude/scripts/setup-ralph-loop.sh)	true

Ralph Loop Command

Execute the setup script to initialize the Ralph loop:

".claude/scripts/setup-ralph-loop.sh" $ARGUMENTS

Please work on the task. When you try to exit, the Ralph loop will feed the SAME PROMPT back to you for the next iteration. You'll see your previous work in files and git history, allowing you to iterate and improve.

CRITICAL RULE: If a completion promise is set, you may ONLY output it when the statement is completely and unequivocally TRUE. Do not output false promises to escape the loop, even if you think you're stuck or should exit for other reasons. The loop is designed to continue until genuine completion.

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.

2mo ago First seen · 16 lines · 0 tokens per session scan A 67a6eacc2808

Subscribe to this mod's changes

ralph-loop is a command published in the GitHub repository tobiasosborne/alethfeld (144 stars, last pushed 5mo ago), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 211 tokens. A static security scan graded it A with 0 findings. It is 86% identical to ralph-loop, differing in 13 lines, and is treated as a copy.

Building agents

ralph-loop next to 6 commands from other repositories
Mod	Type	Stars	Last push	Licence	Scan	Tokens	Works with
ralph-looptobiasosborne/alethfeld	Command	144	5mo ago	MIT	A	0	Claude Code
checklistgithub/spec-kit	Command	148k	yesterday	MIT	A	13	Claude Code
clarifygithub/spec-kit	Command	148k	yesterday	MIT	A	27	Claude Code
specifygithub/spec-kit	Command	148k	yesterday	MIT	A	13	Claude Code
analyzegithub/spec-kit	Command	148k	yesterday	MIT	A	26	Claude Code
convergegithub/spec-kit	Command	148k	yesterday	MIT	A	35	Claude Code
implementgithub/spec-kit	Command	148k	yesterday	MIT	A	14	Claude Code

alethfeld: Command for Claude Code