Certindex MCP Server

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local only

Certindex MCP runs on your own machine — the client starts it, so there is no endpoint to ping. 127 installs a week from pypi. Last commit 8 Oct 2026.

Certificate Transparency search for AI agents: certs, subdomains, issuance history, expiry.

Installs per day peak 597 · avg 48 · -41% w/w

a month agotoday

127

Installs / week

pypi · certindex-mcp

Stars

0 open issues

8 Oct 2026

Last commit

from GitHub

MIT

License

Python

Nothing serious here today

Today is the operative word: we check Certindex MCP every 15 minutes and re-read its code on every release. Watch it and you find out the day that stops being true.

Connect this server

This server runs on your own machine — install it with the package manager and the client starts it for you. Package name taken from the official registry entry.

Claude Code Claude Desktop Codex Cursor VS Code

run in your terminal

claude mcp add certindex-mcp -e 'CERTINDEX_API_KEY=<CERTINDEX_API_KEY>' -- uvx certindex-mcp

~/Library/Application Support/Claude/claude_desktop_config.json

{
  "mcpServers": {
    "certindex-mcp": {
      "command": "uvx",
      "args": [
        "certindex-mcp"
      ],
      "env": {
        "CERTINDEX_API_KEY": "<CERTINDEX_API_KEY>"
      }
    }
  }
}

~/.codex/config.toml

[mcp_servers.certindex-mcp]
command = "uvx"
args = ["certindex-mcp"]
env = { CERTINDEX_API_KEY = "<CERTINDEX_API_KEY>" }

.cursor/mcp.json

{
  "mcpServers": {
    "certindex-mcp": {
      "command": "uvx",
      "args": [
        "certindex-mcp"
      ],
      "env": {
        "CERTINDEX_API_KEY": "<CERTINDEX_API_KEY>"
      }
    }
  }
}

.vscode/mcp.json

{
  "servers": {
    "certindex-mcp": {
      "type": "stdio",
      "command": "uvx",
      "args": [
        "certindex-mcp"
      ],
      "env": {
        "CERTINDEX_API_KEY": "<CERTINDEX_API_KEY>"
      }
    }
  }
}

Put your own value in place of <CERTINDEX_API_KEY> (CertIndex API key (free tier at https://ctindex.io)). The author’s registry entry marks it as required.

Alternatives to Certindex MCP

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CustomDomain™

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Custom domains for SaaS and AI agents: search, register, connect DNS, and issue HTTPS over MCP.

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Certindex MCP — questions

Answers built from our own checks of this server.

Why is there no uptime for Certindex MCP?

Certindex MCP runs on your own machine over stdio — there is no network address to reach, so uptime cannot be measured for it by anyone. What can be measured is adoption: the pypi package certindex-mcp was installed 127 times last week.

How do I connect Certindex MCP?

Copy the ready config from this page. We generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each in the form that client actually reads. It runs locally, so the command pulls certindex-mcp straight from pypi; nothing to host, nothing to sign up for.

How many people use Certindex MCP?

The pypi package certindex-mcp was installed 127 times in the last week. Week over week that is -41%. We show installs rather than GitHub stars on purpose: a star is a bookmark, an install is someone actually running it.

Is Certindex MCP open source?

Yes — it is published under the MIT licence, written in Python and 0 stars on GitHub. The source link is on this page, so you can read exactly what it does with your data before you connect it.