OnionLens Tor Tools MCP Server

by onionlens Your server? Claim it

answering

OnionLens Tor Tools is answering right now. Last checked moments ago. It exposes 3 tools. Last commit 24 Oct 2026.

Tor address validation and retrieval fixtures, with disclosed research logging.

Uptime history 41 hours of history

41 hours agonow

100.0%

Uptime 24h

92 of 92 checks

Tools

read from the server

228 ms

Response time

average over 24h

Stars

last commit 24 Oct 2026

Nothing serious here today

Today is the operative word: we check OnionLens Tor Tools 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

Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 0 min ago.

Claude Code Claude Desktop Codex Cursor VS Code

run in your terminal

claude mcp add tor-tools --transport http https://onionlens.org/mcp

Settings → Connectors → Add custom connector, then paste this address

https://onionlens.org/mcp

~/.codex/config.toml

[mcp_servers.tor-tools]
url = "https://onionlens.org/mcp"

.cursor/mcp.json

{
  "mcpServers": {
    "tor-tools": {
      "url": "https://onionlens.org/mcp"
    }
  }
}

.vscode/mcp.json

{
  "servers": {
    "tor-tools": {
      "type": "http",
      "url": "https://onionlens.org/mcp"
    }
  }
}

Available tools 3

Read directly from the server with tools/list, grouped by what they act on. If a tool disappears, we record the date.

resources

list_resources

List primary-source Tor integration references and controlled retrieval fixtures.

retrieval

retrieval_fixture

Return a deterministic UTF-8 retrieval fixture for transport and parsing checks.

validate

validate_onion_address

Validate a Tor v3 address format, version and checksum without a network request.

Endpoints

URL	Transport	State	Latency	Checked
https://onionlens.org/mcp	streamable-http	answering	154 ms	0 min ago

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OnionLens Tor Tools — questions

Answers built from our own checks of this server.

What can OnionLens Tor Tools do?

It exposes 3 tools, read directly from the server on our last check. Among them: list_resources, retrieval_fixture, validate_onion_address. The full list with descriptions is on this page — we take it from the server itself via tools/list, not from a README. How MCP servers expose tools in the first place →

Is OnionLens Tor Tools working right now?

We send a real MCP handshake every 15 minutes. Over the last 24 hours 92 of 92 checks got a reply (100.0%), average response time 228 ms. The bar chart above shows every period we have measured.

How do I connect OnionLens Tor Tools?

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 is a remote server, so there is nothing to install — the client connects to the address.

Does OnionLens Tor Tools need an API key?

No. OnionLens Tor Tools completed a full MCP handshake with us as an anonymous client and listed its tools without asking for anything. All 3 of them are readable on this page. This is what we observed, not what the docs claim.

How fast is OnionLens Tor Tools?

It answers our handshake in 228 ms on average, which is faster than 62% of all working MCP servers we measure. The comparison comes from our own checks across the whole registry, every 15 minutes.

Is OnionLens Tor Tools open source?

The code is open source: it is published under the MIT licence, written in Python, 0 stars on GitHub and 1 open issue. The licence covers the code in the repository, not the hosted service at onionlens.org, which runs on its operator's own terms.