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1820.ch – Telefonbuch Schweiz MCP Server

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answering

1820.ch – Telefonbuch Schweiz is answering right now. Last checked 13 min ago. It exposes 4 tools.

Swiss phone directory: search people and businesses, reverse number lookup, business categories.

Uptime history 15 days of history
15 days agonow
100.0%
Uptime 24h
91 of 91 checks
4
Tools
read from the server
253 ms
Response time
average over 24h
open, no key
Access
streamable-http

Nothing serious here today

Today is the operative word: we check 1820.ch – Telefonbuch Schweiz every 15 minutes and re-read its code on every release. Watch it and you find out the day that stops being true.

Three servers free · no card

Connect this server

Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 13 min ago.

run in your terminal
claude mcp add telefonbuch --transport http https://mcp.1820.ch/mcp
~/Library/Application Support/Claude/claude_desktop_config.json
{
  "mcpServers": {
    "telefonbuch": {
      "url": "https://mcp.1820.ch/mcp"
    }
  }
}
~/.codex/config.toml
[mcp_servers.telefonbuch]
url = "https://mcp.1820.ch/mcp"
.cursor/mcp.json
{
  "mcpServers": {
    "telefonbuch": {
      "url": "https://mcp.1820.ch/mcp"
    }
  }
}
.vscode/mcp.json
{
  "mcpServers": {
    "telefonbuch": {
      "url": "https://mcp.1820.ch/mcp"
    }
  }
}

Available tools 4

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

browse
browse_business_category
Lists public directory entries in one business category, optionally narrowed to a locality/postcode/canton. Use search_swiss_directory instead for a free-text query.
directory
get_directory_entry
Fetches the full public detail for one directory entry by its entry_id (public_id), including phone numbers, opening hours, and links when the entry has them. Use get_directory_entry for phone numbers and opening hours; use search_swiss_directory or browse_business_category to find an entry_id first.
reverse
reverse_phone_lookup
Looks up the public directory entry (or entries) associated with a Swiss phone number. Accepts national ("079 123 45 67"), E.164 ("+41791234567"), or compact notation. Returns an empty result list when the number has no findable public listing.
swiss
search_swiss_directory
Full-text search over the Swiss public phone/business directory (1820.ch). Matches ALL words in query, so a short keyword works best; put any place name in location, not query. For "business type X in place Y", browse_business_category with a category slug is an alternative. Use get_directory_entry for phone numbers and opening hours of a specific result.

Endpoints

URLTransportStateLatencyChecked
https://mcp.1820.ch/mcp streamable-http answering 264 ms 13 min ago

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1820.ch – Telefonbuch Schweiz — questions

Answers built from our own checks of this server.

What can 1820.ch – Telefonbuch Schweiz do?
It exposes 4 tools, read directly from the server on our last check. Among them: browse_business_category, get_directory_entry, reverse_phone_lookup, search_swiss_directory. 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 1820.ch – Telefonbuch Schweiz working right now?
We send a real MCP handshake every 15 minutes. Over the last 24 hours 91 of 91 checks got a reply (100.0%), average response time 253 ms. The bar chart above shows every period we have measured.
How do I connect 1820.ch – Telefonbuch Schweiz?
Copy the ready config from this page — we generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each with the file path that client actually reads. It is a remote server, so there is nothing to install — the client connects to the address.
Does 1820.ch – Telefonbuch Schweiz need an API key?
No. 1820.ch – Telefonbuch Schweiz completed a full MCP handshake with us as an anonymous client and listed its tools without asking for anything. All 4 of them are readable on this page. This is what we observed, not what the docs claim.
How fast is 1820.ch – Telefonbuch Schweiz?
It answers our handshake in 253 ms on average, which is faster than 54% of all working MCP servers we measure. The comparison comes from our own checks across the whole registry, every 15 minutes.