Python Testing Strategies
c0x12c/ai-toolkit
Testing patterns for FastAPI with pytest-asyncio, httpx AsyncClient, fixtures, and test data factories.
Python testing with pytest using uv package manager. An agent skill from aiskillstore/marketplace.
Install Pytest Mastery
$ npx skills add aiskillstore/marketplace --skill pytest-mastery -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install aiskillstore/marketplace pytest-mastery --agent claude-codeProject scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).
$ git clone --depth 1 https://github.com/aiskillstore/marketplace.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/abdullahmalik17/pytest-mastery .claude/skills/pytest-mastery && rm -rf skills-srcUse ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.
Claude Code skills documentation · loads skills from .claude/skills/
Install the "pytest-mastery" agent skill from https://github.com/aiskillstore/marketplace/tree/main/skills/abdullahmalik17/pytest-mastery into .claude/skills/pytest-mastery/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "pytest-mastery", then confirm the skill loads.Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$skill-installer install https://github.com/aiskillstore/marketplace/tree/main/skills/abdullahmalik17/pytest-masteryType this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.
$ npx skills add aiskillstore/marketplace --skill pytest-mastery -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install aiskillstore/marketplace pytest-mastery --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/aiskillstore/marketplace.git skills-src && mkdir -p .agents/skills && cp -r skills-src/skills/abdullahmalik17/pytest-mastery .agents/skills/pytest-mastery && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "pytest-mastery" agent skill from https://github.com/aiskillstore/marketplace/tree/main/skills/abdullahmalik17/pytest-mastery into .agents/skills/pytest-mastery/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "pytest-mastery", then confirm the skill loads.Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add aiskillstore/marketplace --skill pytest-mastery -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install aiskillstore/marketplace pytest-mastery --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/aiskillstore/marketplace.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/skills/abdullahmalik17/pytest-mastery .cursor/skills/pytest-mastery && rm -rf skills-srcUse ~/.cursor/skills/ instead of .cursor/skills for a personal install.
Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/
Install the "pytest-mastery" agent skill from https://github.com/aiskillstore/marketplace/tree/main/skills/abdullahmalik17/pytest-mastery into .cursor/skills/pytest-mastery/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "pytest-mastery", then confirm the skill loads.Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gemini skills install https://github.com/aiskillstore/marketplace.git --path skills/abdullahmalik17/pytest-mastery--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.
$ npx skills add aiskillstore/marketplace --skill pytest-mastery -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install aiskillstore/marketplace pytest-mastery --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/aiskillstore/marketplace.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/skills/abdullahmalik17/pytest-mastery .gemini/skills/pytest-mastery && rm -rf skills-srcUse ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.
Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/
Install the "pytest-mastery" agent skill from https://github.com/aiskillstore/marketplace/tree/main/skills/abdullahmalik17/pytest-mastery into .gemini/skills/pytest-mastery/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "pytest-mastery", then confirm the skill loads.Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gh skill install aiskillstore/marketplace pytest-masteryInstalls for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).
$ npx skills add aiskillstore/marketplace --skill pytest-mastery -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/aiskillstore/marketplace.git skills-src && mkdir -p .github/skills && cp -r skills-src/skills/abdullahmalik17/pytest-mastery .github/skills/pytest-mastery && rm -rf skills-srcUse ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.
GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/
Install the "pytest-mastery" agent skill from https://github.com/aiskillstore/marketplace/tree/main/skills/abdullahmalik17/pytest-mastery into .github/skills/pytest-mastery/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "pytest-mastery", then confirm the skill loads.GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add aiskillstore/marketplace --skill pytest-mastery -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install aiskillstore/marketplace pytest-mastery --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/aiskillstore/marketplace.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/skills/abdullahmalik17/pytest-mastery .opencode/skills/pytest-mastery && rm -rf skills-srcUse ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.
OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/
Install the "pytest-mastery" agent skill from https://github.com/aiskillstore/marketplace/tree/main/skills/abdullahmalik17/pytest-mastery into .opencode/skills/pytest-mastery/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "pytest-mastery", then confirm the skill loads.OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
Facts
- Skill name
pytest-mastery- GitHub stars
- 430
- Token cost
- ~1.2k tokens
- SKILL.md length
- 153 words
- Files
- 4 (incl. scripts, references)
- Skills in repo
- 1,044
- Repo updated
- First seen
- Licence
- None found
At a glance
Python testing with pytest using uv package manager. An agent skill from aiskillstore/marketplace.
- Running Python tests
- SKILL.md covers Quick Reference, Installation, Test Discovery and Fixtures, plus 7 more sections
- Runs Python scripts from its folder; calls uv
- Writing test files
What it does
Pytest Mastery is an agent skill from aiskillstore/marketplace. Python testing with pytest using uv package manager. Use when: (1) Running Python tests, (2) Writing test files or test functions, (3) Setting up fixtures, (4) Parametrizing tests, (5) Generating coverage reports, (6) Testing FastAPI applications, (7) Debugging test failures, (8) Configuring pytest options. Triggers: "run tests", "write tests", "test coverage", "pytest", "unit test", "integration test", "test FastAPI".
Its SKILL.md is about 1.2k tokens, which your agent loads only when the skill is triggered. The skill folder holds 5 other files, including scripts and reference files (for example `references/fastapi-testing.md`, `scripts/run_tests.py` and `skill-report.json`).
It sits in Testing & QA, covering Unit testing, Test coverage and Backend development. It works with pytest, FastAPI and Python. The repository describes itself as: Security-audited skills for Claude, Codex & Claude Code. One-click install, quality verified.
When your agent uses it
- Running Python tests
- Writing test files
- Setting up fixtures
- Parametrizing tests
Example prompts
- “run tests”
- “write tests”
- “test coverage”
- “/pytest-mastery”
Requirements
- Python 3
What it can do on your machine
Read from SKILL.md and the folder at commit 755bc35. It shows what the files ask for, not the result of running them.
Tool permissions
Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.
From allowed-tools in the SKILL.md frontmatter.
Runs code
Ships 1 file in scripts/ (Python), which the agent can run.
Shell commands in SKILL.md call:
uv
From the folder's file list and the shell code blocks in SKILL.md.
Network
No URLs in SKILL.md. Its commands use uv, which can reach the network depending on how they are called.
From URLs in SKILL.md, links to its own repository left out.
Credentials
Names no API keys, tokens, secrets or passwords.
From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.
Context cost
Pytest Mastery loads about 1.2k tokens when it runs, and up to ~2.8k if it reads all its reference files. Until then it costs about 109 tokens; SKILL.md has 153 words of instructions outside code blocks.
Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.
Safety
Auto-check passed
The automated check found no risky patterns in SKILL.md.
Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); the scripts in this folder are not scanned.
SKILL.md
Without a licence we can't republish the file, so here is its outline and opening line. It has 153 words (~1,232 tokens).
“pytest automatically discovers tests following these conventions:”
- name
- pytest-mastery
Files
SKILL.md and 3 other files (scripts, references) in skills/abdullahmalik17/pytest-mastery of aiskillstore/marketplace.
- SKILL.md
- references/fastapi-testing.md
- scripts/run_tests.py
- skill-report.json
Open the folder on GitHubat commit 755bc35
Compare with similar skills
Pytest Mastery next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.
| Skill | Stars | Used in | Tokens | Auto-check | Licence | Repo updated |
|---|---|---|---|---|---|---|
| Pytest Mastery this skillaiskillstore/marketplace | 430 | — | ~1.2k | Automated safety check: Pass | None | |
| Python Testing Strategiesc0x12c/ai-toolkit | 106 | — | ~747 | Automated safety check: Pass | None | |
| Specx Testsmaksimzayats/specx | 202 | — | ~1.9k | Automated safety check: Pass | MIT | |
| Flowfile Debugging PlaybookEdwardvaneechoud/Flowfile | 375 | — | ~6.3k | Automated safety check: Pass | MIT | |
| Python Devdoccker/cc-use-exp | 1.1k | — | ~790 | Automated safety check: Pass | Custom licence | |
| Pythonericrisco/rsc-harness | 174 | — | ~3.8k | Automated safety check: Pass | MIT |
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Categories
Questions about Pytest Mastery
What does Pytest Mastery do?
Python testing with pytest using uv package manager. An agent skill from aiskillstore/marketplace. Pytest Mastery is an agent skill from aiskillstore/marketplace. Python testing with pytest using uv package manager.
When should I use Pytest Mastery?
Pytest Mastery fits situations like: running Python tests; writing test files; setting up fixtures; parametrizing tests.
How do I install Pytest Mastery in Claude Code?
Run `npx skills add aiskillstore/marketplace --skill pytest-mastery -a claude-code`. Or copy the skill folder (skills/abdullahmalik17/pytest-mastery in aiskillstore/marketplace) into .claude/skills/pytest-mastery in your project. Claude Code loads it when a task matches its description.
How do I install Pytest Mastery in Codex?
Run `npx skills add aiskillstore/marketplace --skill pytest-mastery -a codex`. Or copy the skill folder (skills/abdullahmalik17/pytest-mastery in aiskillstore/marketplace) into .agents/skills/pytest-mastery in your project. Codex loads it when a task matches its description.
Can I use Pytest Mastery in Cursor, Gemini CLI or GitHub Copilot?
Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add aiskillstore/marketplace --skill pytest-mastery -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/pytest-mastery, .gemini/skills/pytest-mastery, .github/skills/pytest-mastery and .opencode/skills/pytest-mastery in your project.
What does Pytest Mastery need to run?
Going by SKILL.md and its folder, Pytest Mastery needs Python for the scripts in its folder and the command-line tools its instructions call (uv). Our summary lists: Python 3.
Does Pytest Mastery access the network?
SKILL.md contains no URLs. Its commands use uv, which can reach the network depending on how they are called. This is read from the text; nothing was executed.
Is Pytest Mastery safe to install?
Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. The check reads SKILL.md only: the scripts in the folder are not scanned, so read them before running anything.
What licence does Pytest Mastery use?
No licence was found for Pytest Mastery or its repository. Without one, default copyright applies: ask the author before reusing or redistributing it.
How many tokens does Pytest Mastery use?
About 1.2k tokens (SKILL.md is roughly 4.9k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full. Its references folder adds about 1.6k tokens, read only when the agent opens those files.
What are the alternatives to Pytest Mastery?
Skills that share tags, products or a category with Pytest Mastery: Python Testing Strategies (c0x12c/ai-toolkit, 106 stars), Specx Tests (maksimzayats/specx, 202 stars), Flowfile Debugging Playbook (Edwardvaneechoud/Flowfile, 375 stars) and Python Dev (doccker/cc-use-exp, 1.1k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Pytest Mastery?
aiskillstore (a GitHub organization) maintains it in aiskillstore/marketplace, which has 430 GitHub stars. The repository holds 1,044 skills in this directory. The repository was last updated on October 9, 2026.
Source: aiskillstore/marketplace on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.