Skills python-async-patterns
📦

python-async-patterns

Content revision r1 Safe 🌐 Network access📁 Filesystem access⚙️ External commands

Build Reliable Async Python

Async Python code often fails due to blocking calls, unbounded tasks, and weak cleanup. This skill provides reusable asyncio patterns, examples, and references for robust concurrent services.

Supports: Claude Codex Code(CC)
🥇 85 Gold

Install with my Agent

Copy this request to your Agent. It includes the canonical Skill page and manifest.

Agent request
Review the Skillstore skill "python-async-patterns" from https://skillstore.io/skills/0xdarkmatter-python-async-patterns.md and its manifest at https://skillstore.io/api/skills/0xdarkmatter-python-async-patterns/manifest. Verify the artifact. You may proceed after verification, subject to the environment's own policy.

Your Agent should still show its plan and request any confirmation required by the security policy.

Agent-readable resources

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Markdown detail GET /skills/0xdarkmatter-python-async-patterns.md Signed manifest GET /api/skills/0xdarkmatter-python-async-patterns/manifest Signed lockfile GET /api/skills/0xdarkmatter-python-async-patterns/lockfile

Test it

Using "python-async-patterns". Audit an async scraper that slows down under load.

Expected outcome:

  • Identifies unbounded concurrency as the likely cause.
  • Recommends semaphore limits, connection pooling, and per-request timeouts.
  • Lists tests for cancellation, retries, and partial failures.

Using "python-async-patterns". Design a background worker for API calls.

Expected outcome:

  • Proposes a queue based worker model with bounded throughput.
  • Adds retry backoff, shutdown handling, and tracked task cleanup.
  • Calls out metrics for failures, latency, and queue depth.

Using "python-async-patterns". Explain why a coroutine blocks the event loop.

Expected outcome:

  • Shows which operations are synchronous and why they block progress.
  • Suggests async libraries or executor isolation for those operations.
  • Highlights where timeouts and cancellation handling are missing.

Security Audit

Safe
v6 • 7/6/2026 Open versioned report

AI review found the static alerts are documentation examples or benign utility references. Network and file operations appear in asyncio teaching materials and templates; the shell script only scans local code. No prompt injection or malicious intent was found.

10
Files scanned
2,654
Lines analyzed
0
Review items
0
False positives ignored

Risk Factors

🌐 Network access (14)
assets/async-project-template.py:71 assets/async-project-template.py:94 assets/async-project-template.py:126 assets/async-project-template.py:127 references/concurrency-patterns.md:228 references/error-handling.md:64 references/error-handling.md:234 references/error-handling.md:267 references/mixing-sync-async.md:252 SKILL.md:20 SKILL.md:27 SKILL.md:47 SKILL.md:86 SKILL.md:27
📁 Filesystem access (1)
references/aiohttp-patterns.md:169
⚙️ External commands (35)
scripts/find-blocking-calls.sh:1 SKILL.md:16-31 SKILL.md:31-35 SKILL.md:35-41 SKILL.md:41-45 SKILL.md:45-55 SKILL.md:55-59 SKILL.md:59-66 SKILL.md:66-70 SKILL.md:70-78 SKILL.md:78-82 SKILL.md:82-93 SKILL.md:93-95 SKILL.md:95-104 SKILL.md:104-110 SKILL.md:110-111 SKILL.md:111-112 SKILL.md:112-113 SKILL.md:113-114 SKILL.md:114-115 SKILL.md:115-119 SKILL.md:119-129 SKILL.md:129-134 SKILL.md:134-135 SKILL.md:135-136 SKILL.md:136-137 SKILL.md:137-138 SKILL.md:138-139 SKILL.md:139-140 SKILL.md:140-144 SKILL.md:144-148 SKILL.md:148-155 SKILL.md:155-158 SKILL.md:158-159 SKILL.md:159-160
No confirmed security findings were detected by the latest completed static and semantic audit. This does not prove the skill has no side effects.
Audited by: codex View Audit History →
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Security Assessment

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Academic citations (APA · BibTeX · CFF)

APA citation

0xDarkMatter. (2026). python-async-patterns security audit report (audit version 6) [Author version unspecified]. Skillstore. https://skillstore.io/skills/0xdarkmatter-python-async-patterns/audits/6

BibTeX citation

@techreport{0xdarkmatter-0xdarkmatter-python-async-patterns-2026, author = {0xDarkMatter}, title = {python-async-patterns security audit report (audit version 6)}, institution = {Skillstore}, year = {2026}, number = {6}, url = {https://skillstore.io/skills/0xdarkmatter-python-async-patterns/audits/6}, note = {Author version unspecified} }

CITATION.cff

cff-version: 1.2.0 message: "If you use this Skill, cite its author and this versioned security audit report." title: "python-async-patterns security audit report (audit version 6)" version: "unspecified" type: report authors: - name: "0xDarkMatter" date-released: "2026-07-06" url: "https://skillstore.io/skills/0xdarkmatter-python-async-patterns/audits/6" identifiers: - type: other value: "skillstore:0xdarkmatter-python-async-patterns:audit:6" description: "Skillstore immutable audit report identifier"

Skillstore Score

Why this score Evidence Confidence: High
82
Architecture
85
Maintainability
87
Content
71
Community
83
Spec Compliance

What You Can Build

Refactor Blocking Coroutines

Find blocking calls, missing awaits, and task management issues in async Python services.

Design Concurrent HTTP Clients

Plan aiohttp clients with bounded concurrency, retries, timeouts, and structured responses.

Prepare Async Code For Production

Add shutdown handling, health checks, resource cleanup, and safer failure behavior.

Try These Prompts

Choose An Async Pattern 
Explain the asyncio pattern I should use for this task: [describe task]. Include risks around blocking calls and cleanup.
Review A Coroutine 
Review this async Python function for blocking calls, orphaned tasks, missing timeouts, and cancellation problems: [paste function].
Design HTTP Concurrency 
Design an aiohttp client flow for these endpoints: [list]. Include bounded concurrency, retries, timeouts, and result handling.
Plan Production Async Service 
Plan a production async service architecture for [service]. Cover lifecycle management, health checks, shutdown, backpressure, and observability.

Best Practices

  • Set explicit timeouts on network and background operations.
  • Bound concurrency with semaphores, queues, or worker pools.
  • Track created tasks and shut them down during application cleanup.

Avoid

  • Do not call blocking I/O directly inside coroutines.
  • Do not create fire-and-forget tasks without references.
  • Do not gather unlimited work without backpressure.

Frequently Asked Questions

What Python versions does this skill target?
It recommends Python 3.10+. Some examples use Python 3.11 features, such as TaskGroup and timeout.
Does it include runnable files?
Yes. It includes an async project template and a shell script for finding blocking calls.
Can it help with aiohttp?
Yes. It covers client sessions, retries, file transfer, WebSocket use, and bounded request patterns.
Does it replace testing?
No. You still need unit, integration, cancellation, and load tests for your application.
Can Claude or Codex use this skill?
Yes. It is marked for Claude, Codex, and Claude Code workflows.
Does the skill make network requests automatically?
No. Network calls appear in examples and templates that a user must run or adapt.

Developer Details

License

MIT

Skillstore revision

r1

Version notice

The author did not declare a version.

Repository

https://github.com/0xDarkMatter/claude-mods/tree/main/skills/python-async-patterns

Ref

c1fdca50ff516318f65fed0d7f9e82797c5171dc

Maintenance freshness

7/18/2026

Usage

96 downloads · 265 views

File structure

📁 assets/

📄 async-project-template.py

📁 references/

📄 aiohttp-patterns.md

📄 concurrency-patterns.md

📄 debugging-async.md

📄 error-handling.md

📄 mixing-sync-async.md

📄 performance.md

📄 production-patterns.md

📁 scripts/

📄 find-blocking-calls.sh

📄 SKILL.md