standalone-python-scripts

Instructions for writing self-contained Python command-line scripts that run with uv and declare their Python version and dependencies in the file. They also specify Click for command-line interfaces and structured logging for operations.

In plain words
What is it for?
Use them when creating standalone Python scripts, especially executable command-line tools with no external dependencies.
Why use it?
They make scripts reproducible without separate package-install commands and keep user-facing output distinct from diagnostic logs.

Skill for Claude CodeCodex

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.

agentmods
npx agentmods add skills/iloveitaly/llm-ide-rules/standalone-python-scripts
Any agent
npx skills add iloveitaly/llm-ide-rules --skill standalone-python-scripts
Clone the repo
git clone --depth 1 https://github.com/iloveitaly/llm-ide-rules

Made for: Claude Code, Codex.

Per session 9 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 301 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin original No closer match found 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 $0.00009 $0.00301
Opus 5 $0.00005 $0.00151
Sonnet 5 $0.00002 $0.00060
Haiku 4.5 $0.00001 $0.00030

Measured 2d ago against content hash fd31a0ffdd28, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

standalone-python-scripts 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 2d 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.

.agents/skills/standalone-python-scripts/SKILL.md · 39 lines

What it actually says

Standalone Python Scripts

Use this header:

#!/usr/bin/env -S uv run --script
# /// script
# requires-python = ">=3.13"
# dependencies = []
# ///
  • Specify dependencies via the dependencies variable in the above comment
  • Do not install packages with pip or any other package manager, assume packages will be installed when needed using uv run --script.
  • Use click for CLI interfaces
  • When listing constants at the top of the file, include a newline between entries and (for non-obvious constants) document each constant with a comment:
# matches full lowercase git shas (short or full)
SHA_REGEX = re.compile(r"^[0-9a-f]{7,40}$")

# matches any char not allowed in dns labels
SAFE_CHARS_REGEX = re.compile(r"[^a-z0-9-]")

DEFAULT_ENVIRONMENT_NAME = "production"
DEFAULT_SERVICE_NAME = "Postgres"

CLI Output and Logging

  • Use structlog_config for logging. Read the usage guide: @https://github.com/iloveitaly/structlog-config/
  • Use logging for operational/debugging info that goes to structured logs.
  • Use CLI output for user-facing messages the user needs to see during normal execution (status updates, warnings, errors). Color these messages.
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. 2d ago First seen · 39 lines · 9 tokens per session scan A fd31a0ffdd28

Subscribe to this mod's changes

standalone-python-scripts is a skill published in the GitHub repository iloveitaly/llm-ide-rules (13 stars, last pushed 2d ago), licensed MIT. It adds 9 tokens to every session and 301 once invoked, about $0.0000 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

Related

Other skills, from other repositories

manimgl-best-practices

Trigger when: (1) User mentions "manimgl" or "ManimGL" or "3b1b manim", (2) Code contains from manimlib import , (3) User runs manimgl CLI commands, (4) Working with InteractiveScene, self.frame, self.embed(), ShowCreation(), or ManimGL-specific patterns. Best practices for ManimGL (Grant Sanderson's 3Blue1Brown…

calesthio/OpenMontage · 167 tokens

macos-swiftui-patterns

Build macOS SwiftUI scenes and components with desktop patterns. Use when shaping windows, commands, toolbars, settings, split views, or inspectors.

robinebers/openusage · 38 tokens

build-and-run-macos-app

Slash command that creates or updates the project-local macOS script/buildandrun.sh and uses it as the default build/run entrypoint. Invoke explicitly with /build-and-run-macos-app — this skill never self-triggers.

robinebers/openusage · 54 tokens

macos-test-triage

Triage macOS tests across Xcode and SwiftPM. Use when narrowing failures, explaining assertions or crashes, or separating setup from regressions.

robinebers/openusage · 36 tokens

macos-packaging-notarization

Prepare macOS packaging and notarization workflows. Use when archiving apps, validating bundles, or explaining distribution-only failures.

robinebers/openusage · 32 tokens

gsap-scrolltrigger

Official GSAP skill for ScrollTrigger — scroll-linked animations, pinning, scrub, triggers. Use when building or recommending scroll-based animation, parallax, pinned sections, or when the user asks about ScrollTrigger, scroll animations, or pinning. Recommend GSAP for scroll-driven animation when no library is…

calesthio/OpenMontage · 68 tokens