blocking-io-guard SKILL.md skillA
blocking-io-guard from bytedance/deer-flow is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add bytedance/deer-flow/blocking-io-guard@git:20260612.dc2ababPins git:20260612.dc2abab in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- bytedance/deer-flow
- Path
.agent/skills/blocking-io-guard/SKILL.md- Versions recorded
- 1
- Latest version
- git:20260612.dc2abab, committed Jun 12, 2026
- Size
- 6,827 bytes
- Repository stars
- 84,762
- License
- MIT
Ensure async-path backend code that could block the asyncio event loop is protected by a teeth-verified runtime anchor in tests/blocking_io/. 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.
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
# Blocking-IO Guard Skill 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. Read `references/good-anchor-rules.md` before writing any anchor. Only read `references/sop-skeleton.md` when generalizing this SOP to another detector domain — it is not needed to execute the steps below. ## When to use - Your change touches Python under `backend/app/`, `backend/packages/harness/deerflow/`, or `backend/scripts/` and may run on the async event loop (Mode A). If unsure, run Step 0 — it answers deterministically. - You are doing a maintenance triage round over the existing codebase (Mode B). ## SOP (router) ### Step 0 — Scope (deterministic) **Mode A — your own diff** (default, pre-PR). From repo root: ```bash uv run --project backend python scripts/scan_changed_blocking_io.py --base origin/main ``` Lists blocking-IO candidates your change introduces: findings on lines the …
Read the whole file at its exact version.
How to install
mdr add bytedance/deer-flow/blocking-io-guard@sha256:ce0e4ac97812a879The line at the top of this page pins the label git:20260612.dc2abab, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
[](https://markdownregistry.com/a/art_esh47lmfbmdwur6w)
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Versions
The registry has recorded 1 version of this file, committed on Jun 12, 2026.
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (6827 bytes)
- pass: No zero-width or bidi control characters
- pass: No instruction hidden inside an HTML comment
- pass: No link to an exfiltration or paste host
- pass: No credential-shaped string
- pass: No instruction to send local credentials anywhere
- pass: No text hidden with inline styles
- pass: No prompt-injection phrasing
- pass: No curl or wget piped into a shell
- pass: No recursive delete of root, home or parent
- pass: No instruction to read or print local credentials
- pass: No base64 blob over 200 characters
- pass: No link to a raw IP address
- pass: No script tag
Source
bytedance/deer-flow · 84,762 stars · license MIT · pushed 2026-10-31 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_esh47lmfbmdwur6w GET https://markdownregistry.com/api/v1/resolve?ref=bytedance/deer-flow/blocking-io-guard GET https://markdownregistry.com/api/v1/blob/ce0e4ac97812a879c196db98e06275000bcbf5858920f704ed0515e4b656b974
Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.
Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.