Cancel

Cancel is an Automation skill for Claude Code, published by Q00 in ouroboros.

5.4K stars550 forkson Q00/ouroborosAdded 2026/08/16+1% in starsRepository updated 2026/08/16

agent-osagentic-aiai-agentai-coding-agentclaude-codeclicodexcoding-agentdeepseekdeepseek-harnessdeveloper-toolsdshdsh-plugingithub-copilotllm-evaluationllm-orchestrationloop-engineeringmcpopencode

Install in seconds

Install Cancel

Copy Cancel into your Claude Code skills folder. Run the command in your terminal, or review the source on GitHub before installing.

terminal

npx degit https://github.com/Q00/ouroboros/tree/main/skills/cancel ~/.claude/skills/cancel

Requires Node.js. Downloads this skill only — not the rest of the repository — into your Claude Code skills folder.

Without Node.js

git clone https://github.com/Q00/ouroboros.git

Clones the whole repository, then copy the skill’s own directory into your skills folder yourself.

In this catalog

Source file: skills/cancel/SKILL.md in Q00/ouroboros
Installs to: ~/.claude/skills/cancel
Collection: One of 25 skills cataloged from this repository
Category: Automation — 1523 skills

What Cancel does

Cancel stops stuck or orphaned executions by session ID, cancels all running sessions, or interactively picks from active executions. Use it when an execution needs to be aborted.

Cancel is cataloged under Automation on DirSkills. Cancel comes from a repository tagged agent-os, agentic-ai, ai-agent, ai-coding-agent and claude-code.

Documentation

README

Excerpt

/ouroboros:cancel

Cancel stuck or orphaned executions by session ID, cancel all running sessions, or interactively pick from active executions.

Usage

/ouroboros:cancel                          # Interactive: list active, pick one
/ouroboros:cancel <execution_id>           # Cancel specific execution
/ouroboros:cancel --all                    # Cancel all running executions

Trigger keywords: "cancel execution", "kill session", "stop running", "abort execution"

How It Works

This skill interacts directly with the event store (not via MCP tool) to emit cancellation events. It uses the CLI command under the hood.

Three modes:

This is the opening of the README. Read the full README on GitHub.

Frequently asked about Cancel

What else does Q00 publish alongside Cancel?
Cancel is one of 25 skills that DirSkills catalogs from Q00/ouroboros, the repository it ships in. Its siblings there include Brownfield, Brownfield and Cancel Executions. Each one is a separate skill with its own page in this directory, installs the same way Cancel does, and is maintained by Q00 in that same repository. The rest of the collection is listed on the Q00/ouroboros page.
How does Cancel compare to other Automation skills?
Cancel ranks #242 by stars among the 1523 Automation skills in this catalog. The most-starred ones next to it are Autonomous Loops, Autonomous Agent Harness and Automation Audit Ops. DirSkills ranks by the star count of the repository each skill ships in, so that order reflects how popular those repositories are rather than any review of Cancel against them. Open each page to compare what they document and how they install.