codeql-security-scanning

codeql-security-scanning is a cursor rule for Claude Code, Cursor from eliornl/rolemule. It costs 1,338 tokens per session, scanned A, original, MIT.

A set of coding rules for CodeQL security analysis, finding exposed secrets, safe logging, and security checks in GitHub Actions. CodeQL scans source code for patterns that may indicate security problems.

In plain words
What is it for?
Running security scans on Python and JavaScript or TypeScript code, checking CI workflows, protecting secrets, and sanitizing user or request data before logging it.
Why use it?
It helps catch security issues and unsafe log messages during development and before code is pushed or merged.

Cursor rule for Claude CodeCursor

Written for Claude Code and Cursor: installed under .claude/, but also a Cursor rule (.mdc).

Good fit Running security scans on Python and JavaScript or TypeScript code, checking CI workflows, protecting secrets, and sanitizing user or request data before logging it.

Compare 6 cursor rules from other repositories ↓
Install with agentmods
npx agentmods add rules/eliornl/rolemule/codeql-security-scanning
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/eliornl/rolemule

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 codeql-security-scanning

README.md
[![agentmods](https://agentmods.dev/badge/rules/eliornl/rolemule/codeql-security-scanning/github.svg)](https://agentmods.dev/rules/eliornl/rolemule/codeql-security-scanning)
Your own site
<a href="https://agentmods.dev/rules/eliornl/rolemule/codeql-security-scanning"><img src="https://agentmods.dev/badge/rules/eliornl/rolemule/codeql-security-scanning/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 codeql-security-scanning

Your own site · 80×15
<a href="https://agentmods.dev/rules/eliornl/rolemule/codeql-security-scanning"><img src="https://agentmods.dev/badge/rules/eliornl/rolemule/codeql-security-scanning.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 1,338 This file is loaded in full into every session.
When invoked 1,338 The same file — it is already loaded in full.
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.

ModelPer sessionOnce invoked
Fable 5.1 $0.01338 $0.01338
Opus 5.5 $0.00535 $0.00535
Sonnet 5.5 $0.00268 $0.00268
Haiku 4.5 $0.00134 $0.00134

Measured 1mo ago against content hash 7162276f950c, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

codeql-security-scanning 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 1mo 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.

.claude/rules/codeql-security-scanning.mdc · 120 lines

How it starts

The opening of the file, as written. The whole thing — 120 lines — stays where its author put it; the contents beside it link to each section on GitHub.

CodeQL & Security Scanning

CI gates (GitHub Actions)

Workflow Job Command / scope
ci.yml Lint (ruff) ruff check . — must pass before push
ci.yml Python tests pytest tests/test_agents/ tests/test_api/ … with 97% coverage
codeql.yml Analyze (python) security-and-quality query pack + .github/codeql/codeql-config.yml
codeql.yml Analyze (javascript-typescript) Same; scans ui/src/ and extension/

Secret scanning and push protection are enabled on the repo. Dependabot alerts + security updates are on.

Python — log injection (py/log-injection)

Every dynamic value in a logger call must use %s placeholders + sanitize_log_value() — not f-strings or % with raw user/request/exception text:

from utils.logging_config import sanitize_log_value, mask_email

# ✅ Correct
logger.warning("Workflow failed for session %s: %s", sanitize_log_value(session_id), sanitize_log_value(err))
logger.info("Login attempt for %s", mask_email(email))

# ❌ Wrong — CodeQL flags f-string interpolation
logger.warning(f"Workflow failed for session {session_id}: {err}")

Numeric format specifiers: never wrap %d, %f, or %.Nf args with sanitize_log_value() — it returns str and breaks formatting at runtime:

logger.info("Parsed resume (%d bytes)", file_size)           # ✅
logger.info("Parsed resume (%d bytes)", sanitize_log_value(file_size))  # ❌ TypeError

Emails: always mask_email() (GDPR). Emails are not auto-redacted by the formatter.

Defense in depth: JSONFormatter / DevelopmentFormatter in utils/logging_config.py also strip CRLF/null bytes from log message text.

Python — clear-text logging (py/clear-text-logging-sensitive-data)

Use mask_email() for emails. API keys, tokens, and passwords must never appear in log messages — the formatter redacts keys matching SENSITIVE_PATTERNS, but explicit mask_email() / sanitize_log_value() at call sites is still required.

Read the full file on GitHub · 120 lines

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. 1mo ago First seen · 120 lines · 1,338 tokens per session scan A 7162276f950c

Subscribe to this mod's changes

codeql-security-scanning is a cursor rule published in the GitHub repository eliornl/rolemule (38 stars, last pushed yesterday), licensed MIT. It adds 1,338 tokens to every session, about $0.0054 per session on Opus 5.5. 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.