python-project-developer

A development specification for building Python projects with command-line and graphical interfaces, a shared programming interface, and PyPI publishing.

In plain words
What is it for?
Use it when creating Python CLI or GUI tools, adding OpenAI function calling, preparing project documentation, or publishing to PyPI.
Why use it?
It provides a defined structure for projects that need several ways to run the same Python functionality.

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/cycleuser/skills/python-project-developer
Any agent
npx skills add cycleuser/Skills --skill python-project-developer
Clone the repo
git clone --depth 1 https://github.com/cycleuser/Skills

Made for: Claude Code, Codex.

Per session 219 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 3,478 The whole file, excluding the scripts and references it only reads on demand.
Security scan C 2 findings. Scan, not verified.
Origin unknown 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 $0.00219 $0.03478
Opus 5 $0.00110 $0.01739
Sonnet 5 $0.00044 $0.00696
Haiku 4.5 $0.00022 $0.00348

Measured yesterday against content hash c6ef2976d941, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade C, and why

python-project-developer scanned grade C with 2 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 yesterday.

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.

Recursive force deletehighDestructive command

rm -rf with a variable or a broad path is one typo away from removing the wrong tree.

rm -rf dist/

Runs shell commandslowCapability

Expected in a hook, worth knowing in a rule or an instructions file.

return subprocess.run(
skills/python-project-developer/SKILL.md · 417 lines

The source is not reproduced here

Licensed GPL-3.0

The repository is licensed GPL-3.0, which this catalogue does not treat as permission to reproduce the file. Read it at the source.

Read it on GitHub

Files

What ships with it

7 files 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. yesterday First seen · 417 lines · 219 tokens per session scan C c6ef2976d941

Subscribe to this mod's changes

python-project-developer is a skill published in the GitHub repository cycleuser/Skills (12 stars, last pushed yesterday), licensed GPL-3.0. It adds 219 tokens to every session and 3,478 once invoked, about $0.0011 per session on Opus 5. A static security scan graded it C with 2 findings (recursive force delete, runs shell commands). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

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