async-python-patterns

async-python-patterns is a skill for Claude Code from 26BB/agentic-awesome-skills-mcp. It costs 34 tokens per session (392 once invoked), scanned A, a copy of async-python-patterns, MIT.

A guide to writing asynchronous Python programs with asyncio and async/await, which let a program handle waiting tasks such as network or database requests without stopping other work.

In plain words
What is it for?
It is for building asynchronous APIs, web scrapers, real-time services, microservices, background tasks, and other I/O-heavy Python programs.
Why use it?
It helps avoid blocked programs and provides patterns for handling concurrent tasks, timeouts, cancellation, and errors.

Skill for Claude Code

Written for Claude Code: shipped in a Claude Code plugin.

Part of the agentic-awesome-skills plugin — 196 skills shipped together

Good fit It is for building asynchronous APIs, web scrapers, real-time services, microservices, background…

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/26bb/agentic-awesome-skills-mcp/async-python-patterns
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.

Any agent
npx skills add 26BB/agentic-awesome-skills-mcp --skill async-python-patterns
Clone the repo
git clone --depth 1 https://github.com/26BB/agentic-awesome-skills-mcp

Made for: Claude Code.

Or install agentic-awesome-skills, the plugin that ships this one along with the rest of its 196 skills.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for async-python-patterns

README.md
[![agentmods](https://agentmods.dev/badge/skills/26bb/agentic-awesome-skills-mcp/async-python-patterns.svg)](https://agentmods.dev/skills/26bb/agentic-awesome-skills-mcp/async-python-patterns)
Your own site
<a href="https://agentmods.dev/skills/26bb/agentic-awesome-skills-mcp/async-python-patterns"><img src="https://agentmods.dev/badge/skills/26bb/agentic-awesome-skills-mcp/async-python-patterns.svg" alt="Measured on agentmods" height="20"></a>
Per session 34 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 392 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin 100% copy Near-identical to another mod 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 5.1 $0.00034 $0.00392
Opus 5 $0.00017 $0.00196
Sonnet 5 $0.00007 $0.00078
Haiku 4.5 $0.00003 $0.00039

Measured 3d ago against content hash ec109a485750, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-06, from the pricing page.

Security

Grade A, and why

async-python-patterns 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 3d 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.

Origin

This is a copy

100% identical to async-python-patterns — 0 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

plugins/agentic-awesome-skills-claude/skills/async-python-patterns/SKILL.md · 48 lines

What it actually says

Async Python Patterns

Comprehensive guidance for implementing asynchronous Python applications using asyncio, concurrent programming patterns, and async/await for building high-performance, non-blocking systems.

Use this skill when

  • Building async web APIs (FastAPI, aiohttp, Sanic)
  • Implementing concurrent I/O operations (database, file, network)
  • Creating web scrapers with concurrent requests
  • Developing real-time applications (WebSocket servers, chat systems)
  • Processing multiple independent tasks simultaneously
  • Building microservices with async communication
  • Optimizing I/O-bound workloads
  • Implementing async background tasks and queues

Do not use this skill when

  • The workload is CPU-bound with minimal I/O.
  • A simple synchronous script is sufficient.
  • The runtime environment cannot support asyncio/event loop usage.

Instructions

  • Clarify workload characteristics (I/O vs CPU), targets, and runtime constraints.
  • Pick concurrency patterns (tasks, gather, queues, pools) with cancellation rules.
  • Add timeouts, backpressure, and structured error handling.
  • Include testing and debugging guidance for async code paths.
  • If detailed examples are required, open resources/implementation-playbook.md.

Refer to resources/implementation-playbook.md for detailed patterns and examples.

Resources

  • resources/implementation-playbook.md for detailed patterns and examples.

Limitations

  • Use this skill only when the task clearly matches the scope described above.
  • Do not treat the output as a substitute for environment-specific validation, testing, or expert review.
  • Stop and ask for clarification if required inputs, permissions, safety boundaries, or success criteria are missing.
Files

What ships with it

1 file beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

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. 3d ago First seen · 48 lines · 34 tokens per session scan A ec109a485750

Subscribe to this mod's changes

async-python-patterns is a skill published in the GitHub repository 26BB/agentic-awesome-skills-mcp (1 stars, last pushed 1mo ago), licensed MIT. It adds 34 tokens to every session and 392 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 0 findings. It is 100% identical to async-python-patterns, differing in 0 lines, and is treated as a copy.

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