nix: Skill for Claude Code

.cursor/skills/revisao-codigo/SKILL.md

revisao-codigo is a skill for Claude Code, Cursor from paulocesaaars/nix. It costs 90 tokens per session (1,664 once invoked), scanned A, original, no licence file.

A code-review guide for a Python server that connects to an Obsidian note vault through MCP. It checks existing Nix code against design principles, project architecture, and AGENTS.md rules, then suggests improvements without changing the code.

In plain words
What is it for?
Use it when asking for a code review of this Nix, Python, or Obsidian-related server. It is for analysis and recommendations, not implementation.
Why use it?
It helps find repeated code, design-principle violations, and architecture mismatches before someone edits the project. The suggestions are ordered by importance.

Skill for Claude CodeCursor

Written for Claude Code and Cursor: disable-model-invocation in frontmatter, but also installed under .cursor/.

This is paulocesaaars/nix's own configuration. It tells Claude Code and Cursor how to work on nix itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything nix configures →

Reuse

Borrowing it

Nothing to install: this file belongs to paulocesaaars/nix. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/paulocesaaars/nix/main/.cursor/skills/revisao-codigo/SKILL.md
Clone the repo
git clone --depth 1 https://github.com/paulocesaaars/nix

Made for: Claude Code, 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 revisao-codigo

README.md
[![agentmods](https://agentmods.dev/badge/skills/paulocesaaars/nix/revisao-codigo/github.svg)](https://agentmods.dev/skills/paulocesaaars/nix/revisao-codigo)
Your own site
<a href="https://agentmods.dev/skills/paulocesaaars/nix/revisao-codigo"><img src="https://agentmods.dev/badge/skills/paulocesaaars/nix/revisao-codigo/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 revisao-codigo

Your own site · 80×15
<a href="https://agentmods.dev/skills/paulocesaaars/nix/revisao-codigo"><img src="https://agentmods.dev/badge/skills/paulocesaaars/nix/revisao-codigo.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 90 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,664 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 unknown 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 $0.00090 $0.01664
Opus 5 $0.00045 $0.00832
Sonnet 5 $0.00018 $0.00333
Haiku 4.5 $0.00009 $0.00166

Measured 8d ago against content hash f8c7a5aaf3c5, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

revisao-codigo 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 8d 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.

.cursor/skills/revisao-codigo/SKILL.md · 133 lines

The source is not reproduced here

No licence file

A repository with no LICENSE is all rights reserved by default, so the body is not copied here. The metadata, the measurements and the link are.

Read it on GitHub

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. 8d ago First seen · 133 lines · 90 tokens per session scan A f8c7a5aaf3c5

Subscribe to this mod's changes

revisao-codigo is a skill published in the GitHub repository paulocesaaars/nix (0 stars, last pushed 10d ago), with no licence file. It adds 90 tokens to every session and 1,664 once invoked, about $0.0005 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.