Semgrep MCP Server
MCP server for Semgrep — a popular open-source static application security testing (SAST) tool. Enables AI agents to run Semgrep security scans on codebases, apply custom rules, detect security vulnerabilities, check code patterns, and integrate SAST findings into AI-driven secure development workflows.
Score Breakdown
⚙ Agent Friendliness
🔒 Security
SAST tool. Local analysis. Source code stays local unless Semgrep Pro cloud used. Security findings are sensitive data.
⚡ Reliability
Best When
A security engineer or DevSecOps team wants AI agents to run automated code security reviews using Semgrep — integrating SAST findings into AI-driven code review and security workflows.
Avoid When
Your team already runs Semgrep in CI/CD — adding a separate MCP may duplicate effort. Best value is when agents need dynamic, on-demand SAST during AI code generation workflows.
Use Cases
- • Running Semgrep security scans on codebases from security review agents
- • Checking code for vulnerability patterns from AI code review agents
- • Applying custom Semgrep rules for compliance checking from DevSecOps agents
- • Integrating SAST findings into AI-driven secure development lifecycle workflows
Not For
- • Dynamic application security testing (Semgrep is SAST — static analysis only)
- • Scanning binary/compiled code without source access
- • Teams using only commercial SAST tools (Checkmarx, Veracode)
Interface
Authentication
Local Semgrep runs require no auth. Semgrep Pro/Cloud features require Semgrep API token.
Pricing
Semgrep open source is free. Pro rules require subscription. MCP server is free open source community tool.
Agent Metadata
Known Gotchas
- ⚠ Semgrep rule selection matters — agents should specify appropriate rule sets for the language/framework
- ⚠ False positive rates vary by rule set — agents may generate noise without proper rule configuration
- ⚠ Large codebases can take minutes to scan — implement appropriate timeouts
- ⚠ Community tool (VetCoders) — not official Semgrep/Returntocorp integration
Alternatives
Full Evaluation Report
Detailed scoring breakdown, competitive positioning, security analysis, and improvement recommendations for Semgrep MCP Server.
Scores are editorial opinions as of 2026-03-06.