What is pystack-service?

A set of Python service patterns for FastAPI and SQLAlchemy applications. It covers application setup, business aggregates and repositories, services and schemas, external clients, logging, and layered tests.

Use it when building a Python API with FastAPI, connecting it to a database with SQLAlchemy, organizing business logic, defining schemas, calling external services, adding structured logs, and testing the service.

It gives a consistent structure for building web services instead of deciding the shape of every layer from scratch. It also addresses common concerns such as data access, input and output models, external calls, logs, and testing.

pystack-service — Plugin for Claude Code by denyszhak/pystack-skills

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.

Clone the repo

git clone --depth 1 https://github.com/denyszhak/pystack-skills

Made for: Claude Code.

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.

README.md

[![agentmods](https://agentmods.dev/badge/plugins/denyszhak/pystack-skills/pystack-service/github.svg)](https://agentmods.dev/plugins/denyszhak/pystack-skills/pystack-service)

Your own site

<a href="https://agentmods.dev/plugins/denyszhak/pystack-skills/pystack-service"><img src="https://agentmods.dev/badge/plugins/denyszhak/pystack-skills/pystack-service/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

Your own site · 80×15

<a href="https://agentmods.dev/plugins/denyszhak/pystack-skills/pystack-service"><img src="https://agentmods.dev/badge/plugins/denyszhak/pystack-skills/pystack-service.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session not measured What this adds to a session before it is invoked.

When invoked not measured The manifest loads nothing itself; its 6 skills cost 1,116 tokens a session between them.

Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.

Origin original No closer match found in the catalogue.

Security

Grade A, and why

pystack-service 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 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.

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.

.claude-plugin/marketplace.json#pystack-service · 22 lines

What it actually says

{
  "name": "pystack-service",
  "source": "./",
  "description": "FastAPI + SQLAlchemy service shape: app setup, aggregates and repos, services and schemas, external clients, logging, tests.",
  "license": "MIT",
  "repository": "https://github.com/denyszhak/pystack-skills",
  "keywords": [
    "python",
    "fastapi",
    "sqlalchemy",
    "pydantic",
    "postgres"
  ],
  "skills": [
    "./skills/python-fastapi-sa-app-setup",
    "./skills/python-aggregate-and-repo",
    "./skills/python-service-and-schema-cohesion",
    "./skills/python-external-client",
    "./skills/python-structlog-logging",
    "./skills/python-test-pyramid"
  ]
}

Contents

What it installs

The manifest is a name and a version. 6 skills travel with it, and installing the plugin installs all of them — 1,116 tokens a session between them. Each is measured on its own page, and each can be installed alone.

Files

What ships with it

1 file beside marketplace.json#pystack-service 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.

marketplace.json 1.9 KB

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.

yesterday First seen · 22 lines scan A 3c7ff48a82f9

Subscribe to this mod's changes

pystack-service is a plugin published in the GitHub repository denyszhak/pystack-skills (4 stars, last pushed yesterday), licensed MIT. Its token cost is not measured: this kind of file is read by the harness, not the model. 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 2026-10-21.

Backend and APIs Languages Python

pystack-service

Getting it into your agent

Wrote this? Show the measurements

Grade A, and why

Nothing flagged

What it actually says

What it installs

What ships with it

What this file has done since we first saw it

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