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antigravity-project-starter: Skill for Claude Code

.agent/skills/architecture-python-backend/SKILL.md

architecture-python-backend is a skill for Claude Code, Codex from Sn4kyGit/antigravity-project-starter. It costs 37 tokens per session (517 once invoked), scanned A, original, no licence file.

A guide for designing and reviewing Python backend services using separate layers, risk assessment, and defined error boundaries.

In plain words
What is it for?
It is for planning or reviewing core Python services and deciding how their responsibilities, risks, and errors should be handled.
Why use it?
It helps keep backend code organised and makes failures easier to contain and reason about.

Skill for Claude CodeCodex

Which agent this was written for is unclear — body not stored (licence); the path alone says nothing.

This is Sn4kyGit/antigravity-project-starter's own configuration. It tells Claude Code and Codex how to work on antigravity-project-starter itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything antigravity-project-starter configures →

not rated 20repo 8mo ago A scan 37 tokens no licence
View source ↗ Sn4kyGit/antigravity-project-starter
Reuse

Borrowing it

Nothing to install: this file belongs to Sn4kyGit/antigravity-project-starter. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/Sn4kyGit/antigravity-project-starter/main/.agent/skills/architecture-python-backend/SKILL.md
Clone the repo
git clone --depth 1 https://github.com/Sn4kyGit/antigravity-project-starter

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 architecture-python-backend

README.md
[![agentmods](https://agentmods.dev/badge/skills/sn4kygit/antigravity-project-starter/architecture-python-backend/github.svg)](https://agentmods.dev/skills/sn4kygit/antigravity-project-starter/architecture-python-backend)
Your own site
<a href="https://agentmods.dev/skills/sn4kygit/antigravity-project-starter/architecture-python-backend"><img src="https://agentmods.dev/badge/skills/sn4kygit/antigravity-project-starter/architecture-python-backend/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 architecture-python-backend

Your own site · 80×15
<a href="https://agentmods.dev/skills/sn4kygit/antigravity-project-starter/architecture-python-backend"><img src="https://agentmods.dev/badge/skills/sn4kygit/antigravity-project-starter/architecture-python-backend.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 37 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 517 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 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 5.1 $0.00037 $0.00517
Opus 5.5 $0.00015 $0.00207
Sonnet 5.5 $0.00007 $0.00103
Haiku 4.5 $0.00004 $0.00052

Measured 2mo ago against content hash 491cf003302f, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

architecture-python-backend 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 2mo 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.

.agent/skills/architecture-python-backend/SKILL.md · 49 lines

The source is not reproduced here

No licence file

A repository with no LICENSE is all rights reserved by default, so the body is not copied here. The metadata, the measurements and the link are.

Read it on GitHub

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. 2mo ago First seen · 49 lines · 37 tokens per session scan A 491cf003302f

Subscribe to this mod's changes

architecture-python-backend is a skill published in the GitHub repository Sn4kyGit/antigravity-project-starter (20 stars, last pushed 8mo ago), with no licence file. It adds 37 tokens to every session and 517 once invoked, about $0.0001 per session on Opus 5.5. 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.

Backend and APIsLanguagesPythonai-agentsai-agents-automationai-agents-mcpantigravityantigravity-skillsantigravity-stackarchitecture
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