cancel-ralph

A command that stops an active Ralph Loop, an automated process that repeats work across multiple iterations.

In plain words
What is it for?
Use it to check whether a loop is active, cancel it when found, and report the iteration at which it stopped.
Why use it?
It lets you end that repeating process and remove its saved session state.

Command

Part of the ralph-loop plugin — 3 commands shipped together

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 commands/shdennlin/agent-plugins/cancel-ralph
Clone the repo
git clone --depth 1 https://github.com/shdennlin/agent-plugins

Or install ralph-loop, the plugin that ships this one along with the rest of its 3 commands.

Per session 4 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. Scan, not verified.
Origin original No closer match found 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 $0.00004 $0.00211
Opus 5 $0.00002 $0.00105
Sonnet 5 $0.00001 $0.00042
Haiku 4.5 $0.00000 $0.00021

Measured 2d ago against content hash a2c74e8df284, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

cancel-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 2d 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.

plugins/ralph-loop/commands/cancel-ralph.md · 24 lines

What it actually says

Cancel Ralph

To cancel the Ralph loop:

  1. Check if a state file exists for this session using Bash:

    SID="${CLAUDE_SESSION_ID:-${CLAUDE_CODE_SESSION_ID:-}}"
    RALPH_STATE_FILE="${CLAUDE_PLUGIN_ROOT}/state/${SID}.md"
    test -f "$RALPH_STATE_FILE" && echo "EXISTS" || echo "NOT_FOUND"
    
  2. If NOT_FOUND: Say "No active Ralph loop found for this session."

  3. If EXISTS:

    • Read the state file to get the current iteration number from the iteration: field
    • Remove the file using Bash: rm "$RALPH_STATE_FILE"
    • Report: "Cancelled Ralph loop (was at iteration N)" where N is the iteration value
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. 2d ago First seen · 24 lines · 4 tokens per session scan A a2c74e8df284

Subscribe to this mod's changes

cancel-ralph is a command published in the GitHub repository shdennlin/agent-plugins (2 stars, last pushed 9d ago), licensed MIT. It adds 4 tokens to every session and 211 once invoked, about $0.0000 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.