rules-index-for-apps

rules-index-for-apps is a cursor rule for Cursor from SyntaxArc/archipy-plugin. It costs 443 tokens per session, scanned A, original, MIT.

A rule index is a map showing which document owns each coding topic and which rule takes priority. It covers architecture, Python, security, tooling, models, testing, and contribution work in ArchiPy apps.

In plain words
What is it for?
Use it to find the right project rule for a layer, check precedence, and understand how app-specific settings override general guidance.
Why use it?
It prevents conflicting instructions and makes it clear where to look for the rule that applies to a change.

Cursor rule for Cursor

Written for Cursor: a Cursor rule (.mdc).

Good fit Use it to find the right project rule for a layer, check precedence, and understand how app-specific settings override general guidance.

Compare 6 cursor rules from other repositories ↓
Install with agentmods
npx agentmods add rules/syntaxarc/archipy-plugin/rules-index-for-apps
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.

Clone the repo
git clone --depth 1 https://github.com/SyntaxArc/archipy-plugin

Made for: Cursor.

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 rules-index-for-apps

README.md
[![agentmods](https://agentmods.dev/badge/rules/syntaxarc/archipy-plugin/rules-index-for-apps/github.svg)](https://agentmods.dev/rules/syntaxarc/archipy-plugin/rules-index-for-apps)
Your own site
<a href="https://agentmods.dev/rules/syntaxarc/archipy-plugin/rules-index-for-apps"><img src="https://agentmods.dev/badge/rules/syntaxarc/archipy-plugin/rules-index-for-apps/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 rules-index-for-apps

Your own site · 80×15
<a href="https://agentmods.dev/rules/syntaxarc/archipy-plugin/rules-index-for-apps"><img src="https://agentmods.dev/badge/rules/syntaxarc/archipy-plugin/rules-index-for-apps.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 443 This file is loaded in full into every session.
When invoked 443 The same file — it is already loaded in full.
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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00443 $0.00443
Opus 5.5 $0.00177 $0.00177
Sonnet 5.5 $0.00089 $0.00089
Haiku 4.5 $0.00044 $0.00044

Measured 1mo ago against content hash 019bf7898562, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

rules-index-for-apps 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 1mo 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.

rules/rules-index-for-apps.mdc · 37 lines

What it actually says

ArchiPy App Rules Index

Canonical Owners

Topic Rule
Layers, call flow, import direction architecture-for-apps.mdc
Python formatting, imports, errors, complexity python-code-style-for-apps.mdc
Strict typing typing-for-apps.mdc
Security, secrets, query safety, suppressions security-for-apps.mdc
Dependencies and local checks tooling-for-apps.mdc
Commits, branches, PRs/MRs contributing-for-apps.mdc
Config and dependency injection config-and-di.mdc
Models and domain errors using-archipy-models.mdc
Domain adapters and infrastructure boundaries using-archipy-adapters.mdc
Repositories using-archipy-repositories.mdc
Logics and unit of work using-archipy-logics.mdc
Services and AppUtils using-archipy-services.mdc
Utils, decorators, interceptors matching using-archipy-*.mdc
Behave BDD testing-bdd-for-apps.mdc

Precedence

  1. App pyproject.toml, formatter, linter, and type-checker configuration wins when stricter or project-specific.
  2. A scoped rule wins over the always-on architecture summary for its layer.
  3. python-code-style-for-apps.mdc owns general error handling; using-archipy-adapters.mdc owns the narrow outer-boundary except Exception exception.
  4. config-and-di.mdc owns secret/settings resolution; security-for-apps.mdc owns whether values are safe to store, log, trace, or expose.
  5. Consumer-app rules never import ArchiPy maintainer workflows such as library release/changelog policy, or core monorepo Make targets.
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. 1mo ago Changed · -3 tokens per session 019bf7898562
  2. 1mo ago First seen · 37 lines · 446 tokens per session scan A c95f96ba6df2

Subscribe to this mod's changes

rules-index-for-apps is a cursor rule published in the GitHub repository SyntaxArc/archipy-plugin (3 stars, last pushed 2d ago), licensed MIT. It adds 443 tokens to every session, about $0.0018 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 2026-09-08.