Django Patterns

Django Patterns is a skill for Claude Code, Codex from AmariahAK/atlarix-skills. It costs 3 tokens per session (401 once invoked), scanned A, original, Apache-2.0.

A guide to building Django applications and APIs. Django is a Python web framework; the guide covers data models, database queries, views, services, migrations, and tests.

In plain words
What is it for?
Use it when designing Django models, writing views or API endpoints, optimizing queries, creating migrations, or testing application behavior.
Why use it?
It helps keep business logic organized, prevent slow repeated database queries, and apply database changes safely.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Good fit Use it when designing Django models, writing views or API endpoints, optimizing queries, creating migrations, or testing application behavior.

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Install with agentmods
npx agentmods add skills/amariahak/atlarix-skills/django
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 AmariahAK/atlarix-skills --skill django
Clone the repo
git clone --depth 1 https://github.com/AmariahAK/atlarix-skills

Made for: Claude Code, Codex.

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 Django Patterns

README.md
[![agentmods](https://agentmods.dev/badge/skills/amariahak/atlarix-skills/django/github.svg)](https://agentmods.dev/skills/amariahak/atlarix-skills/django)
Your own site
<a href="https://agentmods.dev/skills/amariahak/atlarix-skills/django"><img src="https://agentmods.dev/badge/skills/amariahak/atlarix-skills/django/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.

agentmods 80×15 button for Django Patterns

Your own site · 80×15
<a href="https://agentmods.dev/skills/amariahak/atlarix-skills/django"><img src="https://agentmods.dev/badge/skills/amariahak/atlarix-skills/django.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 3 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 401 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 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 5.1 $0.00003 $0.00401
Opus 5 $0.00002 $0.00200
Sonnet 5 $0.00001 $0.00080
Haiku 4.5 $0.00000 $0.00040

Measured 8d ago against content hash 650fd299980c, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-12, from the pricing page.

Security

Grade A, and why

Django 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 8d 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.

skills/django/SKILL.md · 61 lines

What it actually says

Django Patterns

When to use this skill

Use this skill when working on Django apps/APIs and you want safe model design, query performance awareness, and clean view/service structure.

Core patterns

Settings and environments

  • keep secrets out of repo
  • separate settings for dev/staging/prod
  • validate required env vars on startup

Models: constraints + indexes

  • use DB constraints for invariants
  • add indexes for common filters/joins
  • avoid “magic” implicit behavior without tests

Query performance (avoid N+1)

  • use select_related / prefetch_related intentionally
  • avoid per-row queries in loops

Views: thin, services: thick

  • views/DRF viewsets should parse input and return responses
  • business logic belongs in services/domain modules

Migrations

  • additive first
  • backfill safely
  • enforce constraints in later migrations

Testing

  • unit tests for pure logic
  • integration tests for ORM queries and views

Atlarix tool notes

  • Explore: locate settings, apps, and urls; map core models and their relations.
  • Build: run pytest/manage.py test; keep migrations small and reversible.
  • Debug: inspect stack traces; reproduce failing query patterns.
  • Review: check query count and migration safety.

Common mistakes to avoid

  • N+1 queries hidden in serializers/templates
  • Fat models with unrelated responsibilities
  • Unsafe migrations on large tables

Mini-checklist

  • Constraints/indexes intentional
  • Query count sane
  • Views thin, services clear
  • Migrations safe
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. 8d ago First seen · 61 lines · 3 tokens per session scan A 650fd299980c

Subscribe to this mod's changes

Django Patterns is a skill published in the GitHub repository AmariahAK/atlarix-skills (2 stars, last pushed 5d ago), licensed Apache-2.0. It adds 3 tokens to every session and 401 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 2026-09-03.