Semgrep
AI-assisted SAST, SCA, and secrets detection for modern codebases
💬 What is Semgrep?
Semgrep is an AI-assisted application security platform that combines static analysis, software composition analysis, and secrets detection to surface and remediate vulnerabilities in source code. It is built for engineering and AppSec teams that want to embed security directly into developer workflows without slowing shipping velocity. The platform distinguishes itself with multimodal detection that pairs deterministic rule-based scanning with AI reasoning for triage and remediation, plus an open rule Registry and Playground for custom rules. It also includes a dedicated scanner (Semgrep Guardian) for AI-generated code and a malware firewall for developer machines.
Who it's for
Best for: Security and platform engineering teams at mid-to-large software companies that need to secure human- and AI-generated code across many repos.
- Scanning first-party source code for SAST vulnerabilities
- Detecting vulnerabilities and malware in open-source dependencies
- Blocking hardcoded secrets before they reach the repository
- Auditing and securing code produced by AI coding assistants
- Reducing false-positive backlogs in AppSec triage
Pros & cons
- Free Community Edition available for individuals and small teams
- Unifies SAST, SCA, secrets, and malware protection in a single platform
- Integrates with major IDEs, source-control providers, CI/CD, and ticketing systems
- Supports MCP integrations for AI coding tools such as Cursor and Replit
- Open rule Registry and Playground for custom detection rules
- Paid AppSec Platform pricing is not published and requires booking a demo
- Most operational metrics (e.g., 30-minute incident scan window) are tied to paid tiers
- Advanced AI triage and malware firewall capabilities are gated to enterprise plans
Key features
- Static application security testing (SAST) via Semgrep Code
- Open-source dependency vulnerability scanning (Semgrep Supply Chain)
- Hardcoded secrets detection with semantic analysis
- AI-generated code scanning (Semgrep Guardian) at the moment of writing
- AI-assisted triage to suppress false positives and prioritize reachable vulnerabilities
- Automated remediation suggestions delivered in PRs and IDEs
- Open-source malware detection, incident response automation, and malware firewall on developer machines
- Custom rule authoring via Semgrep Registry and Playground
Pricing
Pricing compared →Prices listed on the Semgrep pricing page: $15/mo · $30/mo
Source: semgrep.dev pricing page. Price checked 2026-10-08. Confirm current plans before buying.
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Frequently asked
Does Semgrep have a free version?
Yes. A Community Edition is available alongside a free trial of the paid AppSec Platform.
How does Semgrep use AI?
It combines rule-based static analysis with AI reasoning for detection, triage, and remediation, and it can scan code produced by AI coding assistants through Semgrep Guardian.
What languages and ecosystems are supported?
Semgrep supports scanning source code across major programming languages and integrates with common CI/CD, IDE, and source-control platforms.
Can teams write their own rules?
Yes. The Semgrep Registry and Playground let teams author, share, and reuse custom rules.