Help a contributor ship backend async changes together with the runtime anchor that lets DeerFlow's blocking-IO CI gate actually see the new code. The dynamic detector only catches blocking IO on paths a test executes — this skill closes that gap, either for your own diff or for a repo-wide triage round.
Blocking Io Guard is a community-contributed Claude Code skill in the backend sub-category. It ships as a SKILL.md file that Claude Code auto-discovers under ~/.claude/skills/blocking-io-guard/ and loads when your prompt matches the skill's trigger.
When to invoke it: Use when changing backend Python under app/, packages/harness/deerflow/, or scripts/, when running a blocking-IO triage round over the whole repo, or when a reviewer/CI asks for blocking-IO coverage. Runs a deterministic scan (changed-lines or full-repo), routes each candidate, drafts/extends an anchor, and proves it fails when the blocking IO regresses.
The Blocking Io Guard Claude Code skill is built for software engineers, backend developers, full-stack teams, and technical leads building and maintaining production systems. It's part of ClaudSkills (also referred to as Claude Skills or Claude Code Skills) — the open community-curated registry of 159,000+ SKILL.md files for Anthropic's Claude Code agent and the wider Claude ecosystem (Claude API, Claude Agent SDK).
mkdir -p ~/.claude/skills/blocking-io-guard curl -L https://claudskills.com/skills/blocking-io-guard/SKILL.md \ -o ~/.claude/skills/blocking-io-guard/SKILL.md
Or just download SKILL.md directly and drop it into ~/.claude/skills/blocking-io-guard/. Claude Code auto-discovers it on next session.
Skills live at ~/.claude/skills/blocking-io-guard/SKILL.md on macOS/Linux, or %USERPROFILE%\.claude\skills\blocking-io-guard\SKILL.md on Windows. See the full install guide for step-by-step instructions.
Open @claudskills_bot on Telegram, tap Open Desktop App, and the desktop app installs this skill for you. Or share the bot link with a colleague — they get the same one-tap install. Learn more →
The ClaudSkills desktop app installs any skill directly into ~/.claude/skills/ with one click — no terminal required. Pro starts at $9/mo or $149 lifetime.
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SKILL.md from the source repository to ~/.claude/skills/blocking-io-guard/SKILL.md and restart Claude Code. Both flows are detailed at claudskills.com/install/.SKILL.md file that lives under ~/.claude/skills/<name>/ and tells the Claude Code CLI agent how to perform a specific task (instructions, prompts, allowed tools). Skills are auto-discovered at session start. Blocking Io Guard is one of 67,000+ skills indexed in the open ClaudSkills catalog, classified under the Engineering category. Learn more at /learn/what-is-a-claude-skill/.If you reference this skill in a blog post, paper, or documentation, you can cite it as:
@misc{blocking-io-guard-2026,
author = {bytedance},
title = {Blocking Io Guard [Claude Code skill]},
year = {2026},
publisher = {ClaudSkills},
url = {https://claudskills.com/skills/blocking-io-guard/}
}Grade A · scanned 2026-07-25 — free static scan against the OWASP Agentic Skills Top 10.
No risk patterns were found in any of the ten OWASP-aligned categories. How grading works ›
Browse all Engineering skills in the ClaudSkills registry, or explore these other picks from the same category:
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SKILL.md files, not affiliated with, endorsed by, or sponsored by Anthropic.