semgrep

Semgrep catches security vulnerabilities in real-time and guides Claude to write secure code from the start.

Install

If the official marketplace isn’t added yet, run

Category: Security
GitHub: semgrep/mcp-marketplace

Good for

Scan files the agent writes with Semgrep Code, Supply Chain and Secrets
Have Claude regenerate code until Semgrep returns clean results
Pull Semgrep findings through the MCP server for remediation

Getting started

Run /plugin install semgrep@claude-plugins-official
Run /reload-plugins to load it
Tell Claude 'login to semgrep' to start onboarding

Before you install

Files the agent writes or edits are sent to scanner.semgrep.ai on every write. Telemetry can be turned off with telemetry: false in ~/.semgrep/guardian.yml or by setting DO_NOT_TRACK.

Summarized by AI from the project docs; check the official docs before relying on it.

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