Research & Data · Security

MCP Censys logo

MCP Censys

nickpending/mcp-censys

mcp-censys is a MCP server that taps into the Censys Search API for real-time domain, IP, and FQDN reconnaissance, now with enhanced MCP Prompt Templates.

Install

Client configuration

{
  "mcpServers": {
    "server": {
      "command": "docker",
      "args": [
        "run",
        "--rm",
        "-i",
        "--env-file",
        "/Users/yourname/.env.censys",
        "mcp/censys"
      ]
    }
  }
}

Environment variables

CENSYS_API_IDCENSYS_API_SECRET
GitHub stars
2
Category
Research & Data, Security
License
MIT
Updated
Oct 6, 2026

About MCP Censys

[!CAUTION] This is intended solely as a demonstration and is not production-ready. It is not an officially supported product.

Features

  • Conversational Queries: Natural language access to Censys intel

  • Domain and IP Lookup: Get DNS names, ASN, services, and TLS context

  • New FQDN Discovery: Find recently seen subdomains from DNS and cert data

  • MCP-Compatible Tools: Use directly from Claude Desktop

  • MCP Prompt Templates: Built-in structured guidance templates that instruct Claude exactly how to analyze and present domain data (learn more about MCP Prompts)

  • Dockerized with.env support: Secure, repeatable usage

  • Lightweight API Client: Based on Censys Python SDK

Tools (4)

  • lookup_domain

    Get comprehensive IPs, DNS names, services, and ASN info for a domain (aggregates data across all results) with built-in MCP prompts that guide Claude to…

  • lookup_domain_detailed

    Return a sample of 3 individual host records with services, ASN, geo, and TLS data, along with information about total available records and structured MCP…

  • lookup_ip

    Enrich an IP with DNS, ASN, service info, and TLS metadata

  • new_fqdns

    Find recently observed FQDNs for a domain (via DNS and certs)

Details on this page are taken from the project's README. Open README

Supported clients

Clients mentioned in this server's README:

View all
Claude Desktop logo

Claude Desktop

Desktop · Freemium · Proprietary

Anthropic's official Claude AI desktop application. Supports MCP servers to extend functionality.

WindowsMacOS

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