security-hardening

A security checklist for code changes, covering input validation, database queries, secrets, errors, file uploads, and external URLs.

In plain words
What is it for?
It helps review user input, SQL parameterization, credentials, error messages, upload restrictions, and protection against unsafe external requests.
Why use it?
It catches common security weaknesses before code is merged.

Cursor rule

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/whitequeen306/code-cortex-loop/security-hardening
Clone the repo
git clone --depth 1 https://github.com/whitequeen306/code-cortex-loop
Per session 180 This file is loaded in full into every session.
When invoked 180 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 $0.00180 $0.00180
Opus 5 $0.00090 $0.00090
Sonnet 5 $0.00036 $0.00036
Haiku 4.5 $0.00018 $0.00018

Measured 2d ago against content hash 7fa91e676478, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

security-hardening 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 2d 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/security-hardening.mdc · 19 lines

What it actually says

Security Hardening

每次代码变更必须检查以下 6 条:

  1. 用户输入 → 是否经过 sanitize/校验(禁止裸传到后端或数据库)
  2. SQL 查询 → 是否参数化(禁止字符串拼接 SQL)
  3. 密钥/Token → 是否出现在代码、日志、Git 提交中
  4. 错误消息 → 是否泄露内部信息(路径、栈、版本号、数据库结构)
  5. 文件上传 → 是否限制类型、大小、路径(防目录穿越)
  6. 外部URL → 是否校验白名单(防 SSRF)

违反任何一条的代码不得合并。

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. 2d ago First seen · 19 lines · 180 tokens per session scan A 7fa91e676478

Subscribe to this mod's changes

security-hardening is a cursor rule published in the GitHub repository whitequeen306/code-cortex-loop (15 stars, last pushed 1mo ago), licensed MIT. It adds 180 tokens to every session, about $0.0009 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 2026-08-30.