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.
git clone --depth 1 https://github.com/GantisStorm/essentials-claude-codeWrote 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.
[](https://agentmods.dev/commands/gantisstorm/essentials-claude-code/cancel-swarm)<a href="https://agentmods.dev/commands/gantisstorm/essentials-claude-code/cancel-swarm"><img src="https://agentmods.dev/badge/commands/gantisstorm/essentials-claude-code/cancel-swarm/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.
<a href="https://agentmods.dev/commands/gantisstorm/essentials-claude-code/cancel-swarm"><img src="https://agentmods.dev/badge/commands/gantisstorm/essentials-claude-code/cancel-swarm.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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 | $0.00004 | $0.00284 |
| Opus 5.5 | $0.00002 | $0.00114 |
| Sonnet 5.5 | $0.00001 | $0.00057 |
| Haiku 4.5 | $0.00000 | $0.00028 |
Grade A, and why
cancel-swarm 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 1mo 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.
What it actually says
Cancel Swarm
Stop any active swarm workers.
Works with all swarm commands: /implement-swarm, /plan-swarm, /tasks-swarm, /beads-swarm.
Note: Loop and swarm commands are interchangeable - use /cancel-swarm for swarms and /cancel-loop for loops.
Instructions
- Call TaskList to see all tasks and their status
- For any tasks with status
in_progress:- Note the owner (worker name)
- The worker may still be running
- Use TaskStop to halt any background workers still active
- Report:
- Completed tasks: N
- In-progress (interrupted): N
- Pending (not started): N
If no in-progress tasks found:
- Say "No active swarm found."
After Cancellation
Task progress is preserved:
- Completed tasks remain completed
- In-progress tasks may complete if worker finishes
- Pending tasks remain pending
To check task status:
TaskList
Note
Unlike loop cancellation, swarm workers are independent agents. If a worker completed its current task before cancellation, that work is saved. For Agent Teams (tmux-based), use /cancel-team instead.
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.
- 1mo ago First seen · 46 lines · 4 tokens per session scan A cfebedd50150
cancel-swarm is a command published in the GitHub repository GantisStorm/essentials-claude-code (90 stars, last pushed 8mo ago), licensed Unlicense. It adds 4 tokens to every session and 284 once invoked, about $0.0000 per session on Opus 5.5. 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 2026-08-30.
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atomic-plan
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