How to Connect Semgrep Remote MCP to Cursor

Add Semgrep's remote MCP server to Cursor in about a minute.

🛡️ Official✓ VerifiedHTTP + SSEPublic · No Auth·https://mcp.semgrep.ai/mcp

Step-by-step

Open MCP settings
Cursor → Settings → MCP, or edit ~/.cursor/mcp.json (global) / .cursor/mcp.json (project).
Add the server
Use the one-click deeplink above, or add "semgrep": { "url": https://mcp.semgrep.ai/mcp } under mcpServers.
Authorize
No authentication needed — Semgrep MCP is public.
Verify
Verify in the browser: paste https://mcp.semgrep.ai/mcp into remotemcp.net/inspector and run initialize + tools/list.

Troubleshooting OAuth / 401

A 401 Unauthorized on first connect is normal — the endpoint is OAuth-protected; let Cursor finish the browser consent flow.
If the consent window never opens, remove and re-add the server, then retry.
Check the exact challenge at our OAuth debugger.
Run the live endpoint through the online inspector to see the raw JSON-RPC exchange.

HTTP + SSEhttps://mcp.semgrep.ai/mcp

Legacy SSE endpoint

SSEhttps://mcp.semgrep.ai/sse

Install in Cursor →

Or add to ~/.cursor/mcp.json:

{
  "mcpServers": {
    "semgrep": {
      "url": "https://mcp.semgrep.ai/mcp"
    }
  }
}

🔬 Test Live in Online Inspector 🔐 Audit OAuth 2.1 Config

Tools exposed by Semgrep MCP (3)

Tool	Safety	Description	Parameters
semgrep_scan	🟢 Read	Scan a code snippet with Semgrep rules and return findings.	code*: stringlanguage: string
security_check	🟢 Read	Run a security-focused check over provided code files.	codeFiles*: arrayconfig: string
get_abstract_syntax_tree	🟢 Read	Return the abstract syntax tree Semgrep builds for a code snippet.	code*: stringlanguage: string

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