About phone-lookup
phone-lookup connects MCP clients to ktozvonil.net, a community phone-number reputation service for Ukraine and beyond. It provides number lookups and, with OAuth, lets authenticated users submit reviews marked as AI-generated.
Key features
- 01Phone reputation and community verdicts
- 02Spam rating, operator and region
- 03Tags and recent reviews
- 04Optional authenticated review posting
- 05Tool discovery from native MCP endpoint
Use cases
- 01Check whether an unknown caller is reported as spam
- 02Identify a number's operator and region
- 03Review recent community feedback on a number
- 04Submit an AI-labelled review as an authenticated user
MCP support
A stdio bridge to ktozvonil.net's native MCP endpoint, where tools are discovered at startup. MCP clients can also connect directly to the remote endpoint.
Configuration
Remote servers need no local install. Pick your client, then copy the config or install in one click.
https://ktozvonil.net/mcpclaude mcp add --transport http ktozvonil-phone-lookup https://ktozvonil.net/mcp{"mcpServers":{"ktozvonil-phone-lookup":{"type":"http","url":"https://ktozvonil.net/mcp"}}}Open in Cursor{"servers":{"ktozvonil-phone-lookup":{"type":"http","url":"https://ktozvonil.net/mcp"}}}Open in VS Code{"mcpServers":{"ktozvonil-phone-lookup":{"type":"http","url":"https://ktozvonil.net/mcp"}}}{"mcpServers":{"ktozvonil-phone-lookup":{"serverUrl":"https://ktozvonil.net/mcp"}}}Run commands in a terminal; paste JSON into the client’s MCP config and restart. Servers that need sign-in will prompt on first connect.
Tools
2| Parameter | Type | Required | Description |
|---|---|---|---|
| number | string | Yes | Phone number (digits, international or local format) |
Details
From the project READMEmcp-server-ktozvonil
MCP (Model Context Protocol) server for ktozvonil.net — a community phone-number reputation service for Ukraine and beyond. Ask your AI assistant "who called me from 050 110 89 01?" and it will answer with the community verdict, spam rating, operator, region, tags and recent reviews.
This package is a thin stdio bridge to the site's native MCP endpoint (https://ktozvonil.net/mcp). Tools are discovered at startup, so the package never goes stale.
Tools
| Tool | Description | Auth |
|---|---|---|
lookup_phone | Community verdict, rating, spam level, operator, region, tags and recent reviews for a number | none |
post_comment | Post a review on behalf of an authenticated user (labelled as AI-agent-generated, shown separately, does not affect the community rating) | OAuth bearer |
Install
Claude Code
claude mcp add ktozvonil -- npx -y mcp-server-ktozvonil
Claude Desktop
{
"mcpServers": {
"ktozvonil": {
"command": "npx",
"args": ["-y", "mcp-server-ktozvonil"]
}
}
}
Cursor / Windsurf / other MCP clients
Any client that speaks stdio MCP works the same way: command npx, args -y mcp-server-ktozvonil.
Remote (no install)
MCP clients that support remote servers can skip this package entirely and connect straight to:
https://ktozvonil.net/mcp
Configuration
| Env var | Meaning |
|---|---|
KTOZVONIL_MCP_URL | Override the endpoint URL (default https://ktozvonil.net/mcp) |
KTOZVONIL_TOKEN | OAuth bearer token — only needed for post_comment. Discovery: /.well-known/oauth-protected-resource |
Example
User: Кто звонил с +38 050 110 89 01?
Assistant: (calls
lookup_phone) This number has a "spam" community verdict on ktozvonil.net: 78 reports, mostly "intrusive advertising"…
Development
npm install
npm run build
npm test
Related
- ktozvonil.net — the service itself (uk/ru/en + 5 more languages)
ua-phone— Ukrainian phone number parsing/formatting library- API docs: ktozvonil.net/.well-known/api-catalog
License
MIT © ktozvonil.net
Comments
New to MCP?
From what the protocol is to installing your first server, these answers cover most first questions.
An open protocol that defines how AI applications connect to external tools and data in a uniform way. Clients talk to the model; MCP servers provide tools, resources and prompt templates. They exchange standard messages, so one server can be reused by many clients.