CTlogs.io is answering right now. Last checked 3 min ago. Last commit 5 Sep 2026.
Certificate Transparency search: subdomains, certificate history and hostname keyword search.
CTlogs.io missed one check this week
Everything else answered, so this is steady rather than shaky. We check every 15 minutes, which is how a one-off gets told apart from the start of a pattern, and how you hear about the next one within the hour instead of from your users.
Connect this server
Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 3 min ago.
claude mcp add ctlogs --transport http https://mcp.ctlogs.io/mcphttps://mcp.ctlogs.io/mcp[mcp_servers.ctlogs]
url = "https://mcp.ctlogs.io/mcp"{
"mcpServers": {
"ctlogs": {
"url": "https://mcp.ctlogs.io/mcp"
}
}
}{
"servers": {
"ctlogs": {
"type": "http",
"url": "https://mcp.ctlogs.io/mcp"
}
}
}This endpoint answered with an authorization challenge. The server is running, and it signs you in through your browser: there is no API key to paste.
Endpoints
| URL | Transport | State | Latency | Checked |
|---|---|---|---|---|
| https://mcp.ctlogs.io/mcp | streamable-http | sign-in | 390 ms | 3 min ago |
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CTlogs.io — questions
Answers built from our own checks of this server.