cursorrules

A set of rules for controlling how a coding agent changes a project.

In plain words
What is it for?
Guiding edits in source, script, test, library, and documentation files while protecting configuration, lockfiles, dependencies, and build output.
Why use it?
It prevents file deletion, limits edits to selected folders, protects sensitive or generated files, and requires a plan for larger changes.

Cursor rule for Cursor

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.

agentmods
npx agentmods add rules/projas01/sp-devcontrol/cursorrules
Clone the repo
git clone --depth 1 https://github.com/PRojas01/SP-DevControl

Made for: Cursor.

Per session 75 This file is loaded in full into every session.
When invoked 75 The same file — it is already loaded in full.
Security scan A 0 findings. Scan, not verified.
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 $0.00075 $0.00075
Opus 5 $0.00037 $0.00037
Sonnet 5 $0.00015 $0.00015
Haiku 4.5 $0.00007 $0.00007

Measured yesterday against content hash 8137828679cf, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

cursorrules 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.

.cursorrules · 20 lines

What it actually says

SP-DevControl — Cursor Rules (SP-DevControl)

RULES:

  1. Never delete files. Use .v2 suffix
  2. Present plan before modifying >3 files
  3. Stay in: src/, scripts/, tests/, lib/, docs/
  4. Protected: dist/, .env, .devcontrol/, *.lock, node_modules/
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. yesterday First seen · 20 lines · 75 tokens per session scan A 8137828679cf

Subscribe to this mod's changes

cursorrules is a cursor rule published in the GitHub repository PRojas01/SP-DevControl (0 stars, last pushed 1mo ago), licensed MIT. It adds 75 tokens to every session, about $0.0004 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.