codequality

Coding rules focused on careful, limited and evidence-based changes. They require verifying information, preserving unrelated code and avoiding invented work, unnecessary confirmations and unsupported suggestions.

In plain words
What is it for?
Use them when making or reviewing code changes where accuracy, preservation of existing behavior and tightly scoped edits matter.
Why use it?
They reduce speculative edits and keep requested changes focused on the files and functionality already in scope. They also discourage extra commentary that does not help implement the request.

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/priyansiuu/mcp-python-server/codequality
Clone the repo
git clone --depth 1 https://github.com/Priyansiuu/mcp-python-server

Made for: Cursor.

Per session 0 Nothing until a file matches its globs; then the whole rule loads.
When invoked 270 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin 92% copy Near-identical to another mod 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 $0.00000 $0.00270
Opus 5 $0.00000 $0.00135
Sonnet 5 $0.00000 $0.00054
Haiku 4.5 $0.00000 $0.00027

Measured today against content hash 11d833e4b181, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

codequality 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 today.

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.

Origin

This is a copy

92% identical to codequality — 9 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

.cursor/rules/codequality.mdc · 52 lines

What it actually says


description: Code Quality Guidelines globs:

Code Quality Guidelines

Verify Information

Always verify information before presenting it. Do not make assumptions or speculate without clear evidence.

File-by-File Changes

Make changes file by file and give me a chance to spot mistakes.

No Apologies

Never use apologies.

No Understanding Feedback

Avoid giving feedback about understanding in comments or documentation.

No Whitespace Suggestions

Don't suggest whitespace changes.

No Summaries

Don't summarize changes made.

No Inventions

Don't invent changes other than what's explicitly requested.

No Unnecessary Confirmations

Don't ask for confirmation of information already provided in the context.

Preserve Existing Code

Don't remove unrelated code or functionalities. Pay attention to preserving existing structures.

Single Chunk Edits

Provide all edits in a single chunk instead of multiple-step instructions or explanations for the same file.

No Implementation Checks

Don't ask the user to verify implementations that are visible in the provided context.

No Unnecessary Updates

Don't suggest updates or changes to files when there are no actual modifications needed.

Always provide links to the real files, not x.md.

No Current Implementation

Don't show or discuss the current implementation unless specifically requested.

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. today First seen · 52 lines · 0 tokens per session scan A 11d833e4b181

Subscribe to this mod's changes

codequality is a cursor rule published in the GitHub repository Priyansiuu/mcp-python-server (0 stars, last pushed 1mo ago), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 270 tokens. A static security scan graded it A with 0 findings. It is 92% identical to codequality, differing in 9 lines, and is treated as a copy.