Semgrep Custom Rule Builder

Creates custom Semgrep SAST rules using the semgrep CLI and rule schema YAML format. Supports pattern-either, metavariable-regex, and taint-mode tracking for detecting framework-specific vulnerabilities in Python, Go, and JavaScript.

Installation

Use the upstream install or setup path that matches your environment:

• $ brew install semgrep
• $ docker run -it -v "${PWD}:/src" semgrep/semgrep semgrep login
• $ docker run -e SEMGREP_APP_TOKEN=<TOKEN> --rm -v "${PWD}:/src" semgrep/semgrep semgrep ci
• $ brew upgrade semgrep

Requirements and caveats from upstream:

• <a href="https://hub.docker.com/r/semgrep/semgrep">
• <img src="https://img.shields.io/docker/pulls/semgrep/semgrep.svg?style=flat-square" alt="Docker Pulls" />
• <img src="https://img.shields.io/docker/pulls/semgrep/semgrep.svg?style=flat-square" alt="Docker Pulls (Old)" />

Basic usage or getting-started notes:

• Semgrep is a fast, open-source, static analysis tool that searches code, finds bugs, and enforces secure guardrails and coding standards. Semgrep supports 30+ languages and can run in an IDE, as a...

• From the Semgrep AppSec Platform

• From the CLI

• Source: https://github.com/semgrep/semgrep

• Extracted from upstream docs: https://raw.githubusercontent.com/semgrep/semgrep/HEAD/README.md

Source

• Agent Skill Exchange