cancel-team

A command that stops all active agent teams, including the terminal panes running them.

In plain words
What is it for?
Use it to cancel implementation or planning teams and see which tasks were completed, interrupted, or not started.
Why use it?
It gives you a direct way to interrupt team work when it is no longer needed or should not continue.

Command

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/gantisstorm/essentials-claude-code/cancel-team
Clone the repo
git clone --depth 1 https://github.com/GantisStorm/essentials-claude-code
Per session 5 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 299 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 $0.00005 $0.00299
Opus 5 $0.00003 $0.00150
Sonnet 5 $0.00001 $0.00060
Haiku 4.5 $0.00001 $0.00030

Measured 2d ago against content hash 77d15ee62b87, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

cancel-team 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.

essentials/commands/cancel-team.md · 46 lines

What it actually says

Cancel Team

Stop any active agent team and terminate tmux panes.

Works with all team commands: /implement-team, /plan-team.

Note: Use /cancel-team for teams, /cancel-swarm for swarms, and /cancel-loop for loops.

Instructions

  1. Call TaskList to see all tasks and their status
  2. For any tasks with status in_progress:
    • Note the task subjects (agent assignments)
    • Agents may still be running in tmux panes
  3. Terminate agent tmux panes by running: tmux kill-session -t claude-team 2>/dev/null || true
  4. Report:
    • Completed tasks: N
    • In-progress (interrupted): N
    • Pending (not started): N

If no in-progress tasks found:

  • Say "No active team found."

After Cancellation

Task progress is preserved:

  • Completed tasks remain completed
  • In-progress agent work may be partially saved (agents are full Claude Code instances)
  • Pending tasks remain pending

To check task status:

TaskList

Note

Unlike swarm cancellation (which stops lightweight subagents), team cancellation terminates full Claude Code instances running in tmux panes. Work completed by agents before cancellation is saved to disk.

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 · 46 lines · 5 tokens per session scan A 77d15ee62b87

Subscribe to this mod's changes

cancel-team is a command published in the GitHub repository GantisStorm/essentials-claude-code (91 stars, last pushed 6mo ago), licensed Unlicense. It adds 5 tokens to every session and 299 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 2026-08-30.