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.
npx agentmods add rules/ntnhan94/ai-ready-project-template/python-backendgit clone --depth 1 https://github.com/ntnhan94/ai-ready-project-templateWhat 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 | $0.00000 | $0.00167 |
| Opus 5 | $0.00000 | $0.00084 |
| Sonnet 5 | $0.00000 | $0.00033 |
| Haiku 4.5 | $0.00000 | $0.00017 |
Grade A, and why
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 yesterday.
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
Python Backend Rules
- Use async/await everywhere — FastAPI runs on an async event loop
- Use Pydantic v2 for all request/response schemas
- Never return Beanie Document objects from endpoints — use response schemas
- Follow module pattern: router.py → service.py → schemas.py
- Use
Depends(get_current_user)andDepends(get_current_tenant)for auth - Use
datetime.now(UTC)— neverdatetime.now()ordatetime.utcnow() - Do not import
motor— use PyMongo Async (Motor is deprecated) - Use
HTTPExceptionfor expected errors - Register new Beanie Documents in
app/core/database.py
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.
- yesterday First seen · 17 lines · 0 tokens per session scan A 86fbb019c815
python-backend is a cursor rule published in the GitHub repository ntnhan94/ai-ready-project-template (2 stars, last pushed 5mo ago), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 167 tokens. 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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