What is scaffold-fastapi?

A project generator for FastAPI, a Python framework for building web APIs, using a layered structure for routes, services, repositories, and models. It includes setup for databases, migrations, authentication, testing, logging, monitoring, Docker, and uv when selected.

Use it to create a new FastAPI project, configure PostgreSQL access with SQLAlchemy and asyncpg, add optional JWT authentication, Celery, or OpenTelemetry, and scaffold an example users feature.

It removes the repetitive setup work involved in starting a production-oriented API with consistent project structure and development tools.

How arunanksharan/claude-forge configures Claude Code

Reuse

Borrowing it

Nothing to install: this file belongs to arunanksharan/claude-forge. 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/arunanksharan/claude-forge/main/.claude/skills/scaffold-fastapi/SKILL.md

Clone the repo

git clone --depth 1 https://github.com/arunanksharan/claude-forge

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/skills/arunanksharan/claude-forge/scaffold-fastapi/github.svg)](https://agentmods.dev/skills/arunanksharan/claude-forge/scaffold-fastapi)

Your own site

<a href="https://agentmods.dev/skills/arunanksharan/claude-forge/scaffold-fastapi"><img src="https://agentmods.dev/badge/skills/arunanksharan/claude-forge/scaffold-fastapi/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/skills/arunanksharan/claude-forge/scaffold-fastapi"><img src="https://agentmods.dev/badge/skills/arunanksharan/claude-forge/scaffold-fastapi.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 105 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 519 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.

Model	Per session	Once invoked
Fable 5.1	$0.00105	$0.00519
Opus 5.5	$0.00042	$0.00208
Sonnet 5.5	$0.00021	$0.00104
Haiku 4.5	$0.00011	$0.00052

Measured 2mo ago against content hash 4b96aaa323f3, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

scaffold-fastapi 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.

.claude/skills/scaffold-fastapi/SKILL.md · 26 lines

What it actually says

Scaffold FastAPI Project (claudeforge)

Follow the master prompt at backend/fastapi/PROMPT.md for the complete spec. Steps:

Confirm project parameters with the user — ask only for ones you don't already have:
- project_name, project_slug (snake_case), db_name, api_port
- whether to include: Celery, JWT auth, OpenTelemetry
Read the master prompt: backend/fastapi/PROMPT.md. It contains the full directory tree, dependencies, key files (pyproject.toml, ruff.toml, config.py, main.py, db/session.py, repositories/base.py, tests/conftest.py), and generation steps.
Read the deep-dive guides as needed when generating each layer:
- backend/fastapi/01-project-layout.md — layer rules
- backend/fastapi/02-sqlalchemy-and-alembic.md — model + migration patterns
- backend/fastapi/03-pydantic-and-validation.md — schema patterns
- backend/fastapi/04-auth-and-middleware.md (if include_auth)
- backend/fastapi/05-async-and-celery.md (if include_celery)
- backend/fastapi/06-testing-pytest.md — test setup
Generate the scaffold following the prompt's step-by-step section: create dirs, write files, scaffold one example feature (users) end-to-end as a working pattern.
Verify: uv sync, uv run pytest, uv run ruff check . — all clean.
Hand off: tell the user the next steps (set up Postgres, run migrations, start dev server).

Do not skip the layered architecture. Do not collapse into "everything in main.py". The discipline is the value.

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.

2mo ago First seen · 26 lines · 105 tokens per session scan A 4b96aaa323f3

Subscribe to this mod's changes

scaffold-fastapi is a skill published in the GitHub repository arunanksharan/claude-forge (2 stars, last pushed 6mo ago), licensed Unlicense. It adds 105 tokens to every session and 519 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.

Backend and APIs Languages Python

scaffold-fastapi next to 6 skills from other repositories
Mod	Type	Stars	Last push	Licence	Scan	Tokens	Works with
scaffold-fastapiarunanksharan/claude-forge	Skill	2	6mo ago	Unlicense	A	105	Claude Code
fastapi-patternsaffaan-m/ECC	Skill	298k	4d ago	MIT	A	35	Claude Code, Kiro
stripe-projectse2b-dev/E2B	Skill	15k	yesterday	Apache-2.0	A	51	Claude Code, Codex
azure-mgmt-botservice-pymicrosoft/skills	Skill	3.2k	yesterday	MIT	A	59	Claude Code
azure-messaging-webpubsubservice-pymicrosoft/skills	Skill	3.2k	yesterday	MIT	A	64	Claude Code
azure-messaging-webpubsubservice-pybenjaminasterA/antigravity-awesome-skills	Skill	461	yesterday	MIT	A	0	Claude Code, Codex
azure-appconfiguration-pybenjaminasterA/antigravity-awesome-skills	Skill	461	yesterday	MIT	A	0	Claude Code, Codex

claude-forge: Skill for Claude Code