Use Censys with your AI.
Connect your account once and let the AI you already use work with it, without building another integration. Search internet-connected hosts, SSL certificates and attack surface. discover exposed services and vulnerabilities.
Developed, maintained, and hosted by Vinkius.
MCP VERIFIED · PRODUCTION READY · VINKIUS GUARANTEED
Waiting for input…
Works with modern AI clients that support MCP, including ChatGPT, Claude, Cursor, and more.
Complete set · 9 capabilities
The complete Censys capability set.
These are the exact actions your AI can choose when you ask it to work with Censys.
01-03
3 capabilities in this set.
Part of 9 available through Censys.
- 01
Get certificate hosts
Useful for finding all domains sharing a certificate (SANs). Returns IP addresses, ports and timestamps. Pagination via cursor. Get hosts using a specific certificate
- 02
Get host history
Shows how the host's services, ports and certificates have changed over time. Returns timestamps, services observed and changes detected. Pagination via cursor. Get historical scan data for a specific IP
- 03
View host diff
Useful for identifying changes between hosts or finding similar infrastructure. Compare two hosts to see differences
04-06
3 capabilities in this set.
Part of 9 available through Censys.
- 04
Get account info
Useful for checking remaining API quota and account limits. Get your Censys account information
- 05
Get certificate
Returns the full parsed certificate including subject, issuer, validity, key info, extensions, CT logs and raw PEM data. Get detailed info for a specific certificate by fingerprint
- 06
Get host
Returns all open ports, service banners, TLS certificates, operating system detection, geolocation, autonomous system info and last updated timestamps. Get detailed info for a specific IP address
07-09
3 capabilities in this set.
Part of 9 available through Censys.
- 07
Search certificates
Supports query syntax: issuer names, subject fields, serial numbers, validity dates, key algorithms, certificate transparency logs and more. Returns fingerprints, subjects, issuers, validity periods and key info. Search for SSL/TLS certificates
- 08
Search hosts
Supports powerful query syntax: service names (e.g. "nginx"), ports (e.g. "services.port:443"), protocols, operating systems, autonomous systems, geographic locations and more. Returns IP addresses, open ports, services, banners and locations. Pagination via cursor. Search for internet-connected hosts
- 09
Aggregate hosts
Groups results by a specified field (e.g. "services.port", "location.country", "autonomous_system.name") and returns bucket counts. Useful for understanding the distribution of services, countries or ASNs matching a query. Aggregate host search results by a specific field
Observed, not estimated
915ms average. Fast in production.
Censys is checked daily against the live service.
- Fastest day
- 735ms
- Slowest day
- 1085ms
- 14-day trend
- Stable-3%
Connect your client
One URL. Every client.
Activate the Connector, copy your link, and paste it into the client you already use. 9 capabilities arrive ready to run.
Preview access · not provider authentication
The vk_preview_* token belongs to Vinkius preview infrastructure. It lets Claude discover and display the capabilities of Censys, so you can see the experience inside your AI.
It does not authenticate your account with Censys. Actions requiring credentials or live account data may not run until you activate the Connector and authorize the service.
Censys Connector
You're all set. Choose your MCP client and follow the setup instructions.
https://edge.vinkius.com/vk_preview_s8bUKfbc9OS3leqa10RhKd63iRfAGn5ERJCnUH87/mcpClaude Desktop
Follow the steps below to connect in seconds.
- 1In Claude Desktop, open Settings → Connectors.
- 2Click “Add custom connector” and paste the connector link above as the remote MCP server URL.
- 3Click Add and start a new chat — Censys capabilities are ready to use.
{
"mcpServers": {
"censys-mcp": {
"url": "https://edge.vinkius.com/vk_preview_s8bUKfbc9OS3leqa10RhKd63iRfAGn5ERJCnUH87/mcp"
}
}
}
Claude
ChatGPT
Cursor
VS Code
Windsurf
Claude Code
JetBrains
Cline
Step-by-step instructions for each client are in the guide. How to connect
FAQ
Questions Censys owners ask.
- 01
How do I get Censys API credentials?
Sign up for a free account at censys.io, go to your account page and generate API credentials. Free tier includes limited queries per day.
- 02
What kind of hosts can I find?
Censys scans the entire IPv4 space regularly. You can find web servers, databases, SSH servers, mail servers, IoT devices, industrial control systems and any internet-facing service.
- 03
What query syntax is supported?
Censys supports powerful query syntax: service name (services.service_name: HTTP), port (services.port:443), certificate fields (parsed.subject.country: US), OS detection (metadata.os: Linux), ASN, geographic location and boolean operators (AND, OR, NOT).
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