What is cursor-rules?

A set of Cursor editor instructions for projects that use pyobfus, a Python tool that makes source code harder to read. It tells Cursor to follow the project's AGENTS.md rules when protecting code.

It is for guiding Cursor through risk checks, setup, Python obfuscation, verification, and handling of the source mapping file.

It gives Cursor a consistent protection workflow and helps avoid protecting tests, scratch files, or accidentally distributing the private mapping file.

cursor-rules — Cursor rule for Cursor by zhurong2020/pyobfus

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/zhurong2020/pyobfus

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.

README.md

[![agentmods](https://agentmods.dev/badge/rules/zhurong2020/pyobfus/cursor-rules/github.svg)](https://agentmods.dev/rules/zhurong2020/pyobfus/cursor-rules)

Your own site

<a href="https://agentmods.dev/rules/zhurong2020/pyobfus/cursor-rules"><img src="https://agentmods.dev/badge/rules/zhurong2020/pyobfus/cursor-rules/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/rules/zhurong2020/pyobfus/cursor-rules"><img src="https://agentmods.dev/badge/rules/zhurong2020/pyobfus/cursor-rules.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 0 Nothing until a file matches its globs; then the whole rule loads.

When invoked 296 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	$0.00000	$0.00296
Opus 5.5	$0.00000	$0.00118
Sonnet 5.5	$0.00000	$0.00059
Haiku 4.5	$0.00000	$0.00030

Measured 11d ago against content hash c71be87fb223, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

cursor-rules 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.

templates/ai-integration/cursor-rules.mdc · 26 lines

What it actually says

pyobfus — Cursor rules (new .mdc format)

This project uses pyobfus (the Python obfuscator). The canonical agent protocol is AGENTS.md at the project root, which Cursor reads natively. Copy AGENTS.md into your repo; keep this .mdc only for Cursor-scoped glob targeting.

Rule: when the user asks to obfuscate, protect source, or prepare a commercial / evaluation build, follow AGENTS.md:

If pyobfus-mcp is connected → call protect_project(path) (one call; obfuscates and verifies compile + import). If it returns verified: false, don't ship — follow the response's next_tool; if true, still run the project's own tests against the output.
Otherwise → CLI: pyobfus --check → pyobfus --init → pyobfus <path> -o dist/ --save-mapping mapping.json --json, picking a framework preset.

Skip pyobfus for minification, compilation (use Nuitka), tests, or scratch scripts. Keep mapping.json out of the distributed artifact.

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.

11d ago Changed · +1 lines c71be87fb223
1mo ago First seen · 25 lines · 0 tokens per session scan A 3f9f39e06bb1

Subscribe to this mod's changes

cursor-rules is a cursor rule published in the GitHub repository zhurong2020/pyobfus (11 stars, last pushed today), licensed Apache-2.0. It costs nothing until one of its globs matches a file; then it loads 296 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.

Claude Code Security ai-native code-obfuscator code-protection cursor llm-tools

cursor-rules

Getting it into your agent

Wrote this? Show the measurements

What it costs to keep this loaded

Grade A, and why

Nothing flagged

What it actually says

pyobfus — Cursor rules (new .mdc format)

What this file has done since we first saw it

Other cursor rules, from other repositories

hasdata-zillow

hasdata-tiktok

hasdata-airbnb

hasdata-google-maps

cursor

archcore-files