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.
curl -O https://raw.githubusercontent.com/arunanksharan/claude-forge/main/.claude/skills/scaffold-fastapi/SKILL.mdgit clone --depth 1 https://github.com/arunanksharan/claude-forgeWrote 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.
[](https://agentmods.dev/skills/arunanksharan/claude-forge/scaffold-fastapi)<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="Measured on agentmods" height="20"></a>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 | $0.00053 | $0.00260 |
| Sonnet 5 | $0.00021 | $0.00104 |
| Haiku 4.5 | $0.00011 | $0.00052 |
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 7d 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.
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 rulesbackend/fastapi/02-sqlalchemy-and-alembic.md— model + migration patternsbackend/fastapi/03-pydantic-and-validation.md— schema patternsbackend/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.
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.
- 7d ago First seen · 26 lines · 105 tokens per session scan A 4b96aaa323f3
scaffold-fastapi is a skill published in the GitHub repository arunanksharan/claude-forge (2 stars, last pushed 4mo ago), licensed Unlicense. It adds 105 tokens to every session and 519 once invoked, about $0.0005 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 2026-08-31.
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