How to Use the Censys MCP in Cursor

Q: How does Cursor use Censys to find domains sharing an SSL certificate?

Your Cursor agent executes getcertificatehosts using a specific certificate fingerprint. The MCP Server executes the query and populates your workspace with a list of IP addresses, open ports, and associated hostnames.

Q: How does Cursor protect my Censys API keys and target IP addresses when using this MCP Server?

Your Censys API credentials reside securely in your local .cursor/mcp.json configuration file. All queries, target IP addresses, and domain lookups are transmitted directly through encrypted V8 sandboxes without persistent logging.

Pull live Censys host details and SSL data directly into Cursor to write code against real-world infrastructure.

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Connect Censys MCP to Cursor

Create your Vinkius account to connect Censys to Cursor and route execution through our secure gateway. The platform manages server hosting, runtime updates, and security layers. Configuration requires no manual server provisioning.

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Setup Censys with Cursor

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Write code with live IP data in Cursor Agent

`get_host` retrieves open ports, TLS certificates, and geo-location details for any IP address and feeds them directly to your Cursor agent. This means your Cursor editor writes network scripts using actual, live Censys endpoint data instead of static mock structures. You avoid syntax errors because the Cursor agent reads the exact Censys JSON response structure from the live host. It builds precise parsing functions inside your code file on your first try.

Analyze SSL certificates using this MCP Server

`get_certificate` pulls parsed certificate details, including subject names, validity periods, and raw PEM data, directly into your active Cursor coding file. Your Cursor agent uses this live Censys payload to generate validation logic or configure local security policies. By running `search_certificates` from the Cursor chat sidebar, you find matching Censys certificates based on key algorithms or serial numbers. The editor then formats these results into clean, typed TypeScript interfaces or Python dicts.

Compare infrastructure differences side-by-side

`view_host_diff` identifies configuration drift by comparing two distinct target hosts in the Cursor workspace. To alert you when production servers diverge from your staging baseline, your Cursor agent takes the Censys output and writes automated testing scripts. This removes the guesswork from debugging environment mismatches in Cursor. You see exactly which ports are open on one Censys host but closed on the other, written directly into your workspace.

Setup guide

Set up Censys MCP in Cursor

Prerequisites

Cursor installed (macOS, Windows, or Linux)
Active Vinkius subscription with a valid endpoint token

1

Open MCP Settings

Go to Cursor Settings → MCP or open the Command Palette (Cmd+Shift+P / Ctrl+Shift+P) and search for "MCP: Add Server".
2

Add the Censys MCP

Cursor will create or open .cursor/mcp.json in your project root. Paste the JSON snippet on the right. Replace [YOUR_TOKEN_HERE] with your endpoint token from cloud.vinkius.com.
3

Enable Agent mode

Open Composer (Cmd+I / Ctrl+I) and switch to Agent mode using the dropdown at the top. MCP tools are only available in Agent mode.
4

Verify the connection

Ask Cursor something like "List my recent Censys transactions." If the MCP tools are loaded correctly, Cursor will call the Censys tools automatically. You can also check Settings → MCP for a green status indicator.

.cursor/mcp.json

{
  "mcpServers": {
    "censys-mcp": {
      "url": "https://edge.vinkius.com/[YOUR_TOKEN_HERE]/mcp"
    }
  }
}

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Independent Platform Disclaimer: Vinkius is an independent platform and is not affiliated with, endorsed by, sponsored by, verified by, or otherwise authorized by Censys. All third-party trademarks, logos, and brand names are the property of their respective owners. Their use on this website is strictly for informational purposes to identify service compatibility and interoperability.

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Common questions about Censys MCP in Cursor

Your Cursor agent executes `get_certificate_hosts` using a specific certificate fingerprint. The MCP Server executes the query and populates your workspace with a list of IP addresses, open ports, and associated hostnames.

Yes, you can ask the editor to search for hosts running specific protocols like SSH or HTTP. The MCP server runs `search_hosts` to inject the matching IP list directly into your active code block.

You ask the Cursor chat agent to check your account status. It triggers `get_account_info` and prints your remaining query limits directly in the editor sidebar.

Yes, you can ask your agent to aggregate search results. The server executes `aggregate_hosts` to group matching hosts by ASN or country, returning bucket counts directly to your chat.

Your Censys API credentials reside securely in your local `.cursor/mcp.json` configuration file. All queries, target IP addresses, and domain lookups are transmitted directly through encrypted V8 sandboxes without persistent logging.

Use it with your favorite AI tools

Connect this server to Cursor, Claude, VS Code, and more.

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