fastapi-architect

fastapi-architect is a skill for Claude Code, Codex from ralvarezdev/ralvaskills. It costs 92 tokens per session (1,963 once invoked), scanned A, original, GPL-3.0.

Architecture guidance for building REST APIs with FastAPI, a Python web framework. It covers FastAPI 0.136 with Python 3.14, request and response models, authentication, versioned URLs, and standard error responses.

In plain words
What is it for?
Use it when designing or reviewing FastAPI services, including dependency setup, application startup, OAuth2 with JWT, external identity providers, and API versioning.
Why use it?
It provides framework-specific decisions for organizing a FastAPI service and keeping its API behavior consistent.

Skill for Claude CodeCodex

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

Good fit Use it when designing or reviewing FastAPI services, including dependency setup, application startup, OAuth2 with JWT, external identity providers, and API versioning.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/ralvarezdev/ralvaskills/fastapi-architect
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 ralvarezdev/ralvaskills --skill fastapi-architect
Clone the repo
git clone --depth 1 https://github.com/ralvarezdev/ralvaskills

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 fastapi-architect

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

Your own site · 80×15
<a href="https://agentmods.dev/skills/ralvarezdev/ralvaskills/fastapi-architect"><img src="https://agentmods.dev/badge/skills/ralvarezdev/ralvaskills/fastapi-architect.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 92 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,963 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 $0.00092 $0.01963
Opus 5.5 $0.00037 $0.00785
Sonnet 5.5 $0.00018 $0.00393
Haiku 4.5 $0.00009 $0.00196

Measured 11d ago against content hash 7d0d0fbc2409, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

fastapi-architect 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 11d 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/frameworks/fastapi-architect/SKILL.md · 104 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

2 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. 11d ago Changed · +1 lines 7d0d0fbc2409
  2. 22d ago Changed 7b315b59efee
  3. 24d ago Changed 7371baa2dab1
  4. 1mo ago First seen · 103 lines · 92 tokens per session scan A 695cb09aded0

Subscribe to this mod's changes

fastapi-architect is a skill published in the GitHub repository ralvarezdev/ralvaskills (2 stars, last pushed yesterday), licensed GPL-3.0. It adds 92 tokens to every session and 1,963 once invoked, about $0.0004 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 2026-08-31.

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