semgrep

semgrep is a cursor rule for Cursor from davidl71/project-management-automation. It costs 707 tokens per session, scanned A, original, MIT.

A Semgrep usage rule for scanning source code against known security and quality patterns. Semgrep is a code-scanning tool that finds matching patterns in source files.

In plain words
What is it for?
Use it to scan files for security issues, enforce coding standards, validate security-related code, and connect checks with automated build and deployment pipelines.
Why use it?
It gives coding agents a consistent way to check for common vulnerabilities, coding problems, and security mistakes before changes are committed or deployed.

Cursor rule for Cursor

Written for Cursor: installed under .cursor/.

Good fit Use it to scan files for security issues, enforce coding standards, validate security-related code, and connect checks with automated build and deployment pipelines.

Compare 6 cursor rules from other repositories ↓
Install with agentmods
npx agentmods add rules/davidl71/project-management-automation/semgrep
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/davidl71/project-management-automation

Made for: 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 semgrep

README.md
[![agentmods](https://agentmods.dev/badge/rules/davidl71/project-management-automation/semgrep/github.svg)](https://agentmods.dev/rules/davidl71/project-management-automation/semgrep)
Your own site
<a href="https://agentmods.dev/rules/davidl71/project-management-automation/semgrep"><img src="https://agentmods.dev/badge/rules/davidl71/project-management-automation/semgrep/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 semgrep

Your own site · 80×15
<a href="https://agentmods.dev/rules/davidl71/project-management-automation/semgrep"><img src="https://agentmods.dev/badge/rules/davidl71/project-management-automation/semgrep.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 707 This file is loaded in full into every session.
When invoked 707 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 $0.00707 $0.00707
Opus 5.5 $0.00283 $0.00283
Sonnet 5.5 $0.00141 $0.00141
Haiku 4.5 $0.00071 $0.00071

Measured 1mo ago against content hash 62dac38b1bbd, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

semgrep 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.

.cursor/rules/semgrep.mdc · 118 lines

How it starts

The opening of the file, as written. The whole thing — 118 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Semgrep MCP Server Usage

When to Use Semgrep

ALWAYS use Semgrep for:

  • Security vulnerability scanning
  • Code quality checks
  • Pattern-based code analysis
  • Security best practices enforcement
  • Before committing code changes

Usage Pattern: Use Semgrep when:

  • Scanning code for security issues
  • Checking for common vulnerabilities
  • Enforcing coding standards
  • Reviewing code before deployment
  • Validating security practices

Examples

✅ Good:

  • "Scan this code with Semgrep for security vulnerabilities"
  • "Check this code with Semgrep for common issues"
  • "Use Semgrep to validate this security implementation"
  • "Run Semgrep on this file before committing"

❌ Avoid:

  • General code questions (use Cursor AI or Context7)
  • Documentation lookups (use Context7)
  • Code generation (use Cursor AI)

Benefits

  • Security: Detects common vulnerabilities and security issues
  • Quality: Enforces coding standards and best practices
  • Automation: Can be integrated into CI/CD pipelines
  • Comprehensive: Scans for hundreds of security patterns

Integration with Other Tools

  • With Ollama: Semgrep for security scanning, Ollama for code analysis
  • With Context7: Semgrep for security, Context7 for library documentation
  • Before commits: Always run Semgrep before committing security-sensitive code

Workflow for Security Review

  1. Before changes: Run Semgrep on modified files
  2. Review findings: Address security issues found
  3. Fix issues: Implement fixes for identified vulnerabilities
  4. Re-scan: Verify fixes resolved the issues

Best Practices

Security Scanning

  • Scan before commit: Always scan code before committing
  • Fix critical issues: Address high-severity findings immediately
  • Review all findings: Don't ignore warnings without review
  • Regular scans: Run scans periodically on the entire codebase

Query Optimization

  • Be specific: "Scan this file for SQL injection vulnerabilities"
  • Provide context: Include file paths or code sections
  • Review output: Always review Semgrep findings carefully

Read the full file on GitHub · 118 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 · 118 lines · 707 tokens per session scan A 62dac38b1bbd

Subscribe to this mod's changes

semgrep is a cursor rule published in the GitHub repository davidl71/project-management-automation (1 stars, last pushed 8mo ago), licensed MIT. It adds 707 tokens to every session, about $0.0028 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 2026-08-31.