MCP server · CTlogs.io

CTlogs.io MCP Connector

Official remote MCP connector from CTlogs.io (Lyalpha GmbH) giving AI assistants read-only Certificate Transparency lookups over the same index as the CTlogs.io site and API. Streamable HTTP transport, OAuth sign-in through a CTlogs account with an active plan.

Open endpoint → CTlogs.io provider profile

One-click install for Cursor, VS Code, Claude, and 20+ other MCP clients, powered by API Commons MCP Install — visit install.apicommons.org for more information.

Provider: CTlogs.io Type: Hosted endpoint Transport: Host: mcp.ctlogs.io

Endpoint

https://mcp.ctlogs.io/mcp

Hosted endpoint · transport

Connect

This is a remote MCP server — point an MCP client at the endpoint URL. Clients with native remote support (Claude, Cursor, VS Code, …):

# mcp client config (e.g. .mcp.json / mcp settings) { "mcpServers": { "ctlogs-io": { "url": "https://mcp.ctlogs.io/mcp" } } }

For stdio-only clients (older Claude Desktop, etc.), bridge with mcp-remote:

# Add to claude_desktop_config.json { "mcpServers": { "ctlogs-io": { "command": "npx", "args": ["-y", "mcp-remote", "https://mcp.ctlogs.io/mcp"] } } }

If the server requires authentication, add the provider's token/header (e.g. an X-API-Key) per its docs. A quick reachability check:

curl -i -X POST https://mcp.ctlogs.io/mcp \ -H "Content-Type: application/json" -H "Accept: application/json, text/event-stream" \ -d '{"jsonrpc":"2.0","id":1,"method":"tools/list"}'

Tools

lookup_certificates — Given a hostname or a SHA-256 fingerprint, returns certificate history - issuer, validity window, type and the other names on the same certificate.
index_status — How large the index is and when it was last updated.
account_quota — How much of the account allowance is left and when it resets.

About MCP

The Model Context Protocol (MCP) is an open protocol Anthropic introduced for connecting LLM-based agents to external tools and data sources. Providers publish MCP servers that expose their API surface as structured, discoverable tools — an MCP-compatible client (Claude Desktop, Cursor, Cline, Continue, etc.) can connect to the server and call its tools without any per-provider integration code.

Browse every MCP server on the APIs.io network or compare with the broader Agent Skill surfaces of the same providers.

Work with this as data

Every MCP server here is available over the APIs.io API and to AI agents over MCP.

MCP server

One button, every client — Claude, Cursor, VS Code and the rest.

https://apis.io/mcp

Tools for mcp servers

4 MCP tools reach this

find_mcpBrowse and filter every MCP server in the catalog.
apis_io_searchSTART HERE — APIs, providers and tags for one query, each with its total.
resolveTurn a domain, URL or GitHub org into the provider it belongs to.
find_cohortsEvery scored population of providers in the catalog.

All 92 tools →

Call it yourself

curl for this page

This MCP server

curl "https://apis.io/api/v1/mcp/ctlogs-io-mcp-connector"

All mcp servers

curl "https://apis.io/api/v1/mcp?limit=25"

Calls without X-API-Key need no key. Calls with it need a paid plan — get a key.

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