# whois-mcp
A **Model Context Protocol (MCP) server** that provides LLMs with network information lookup tools through WHOIS and RIPE Database queries.
## Features
### Available Tools
- **`whois_query`** - Query WHOIS servers for domains, IPs, and ASNs
- **`expand_as_set`** - Recursively expand AS-SETs into concrete ASN lists
- **`validate_route_object`** - Check IRR route/route6 object existence
- **`contact_card`** - Fetch abuse, admin, and technical contacts
### Regional Internet Registry (RIR) Support
This MCP server supports all five Regional Internet Registries (RIRs) with varying tool availability:
| Tool | RIPE NCC | ARIN | APNIC | AfriNIC | LACNIC |
|------|:--------:|:----:|:-----:|:-------:|:------:|
| **WHOIS Query** | ✅ | ✅ | ✅ | ✅ | ✅ |
| **AS-SET Expansion** | ✅ | ✅ | ➖ | ➖ | ➖ |
| **Route Validation** | ✅ | ✅ | ➖ | ➖ | ➖ |
| **Contact Card** | ✅ | ✅ | ✅ | ✅ | ✅ |
**Legend:**
- ✅ Fully supported via REST/RDAP APIs
- ➖ Not available (no public API; use `{rir}_whois_query` and parse output instead)
**RIR Coverage:**
- **RIPE NCC** : Europe, Middle East, Central Asia
- **ARIN** : North America
- **APNIC** : Asia-Pacific
- **AfriNIC** : Africa
- **LACNIC** : Latin America & Caribbean
## Usage
This MCP server supports two transport modes:
- **Stdio mode** (recommended for Claude Desktop and Claude Code CLI)
- **HTTP server mode** (for web-based clients and remote access)
### With Claude Desktop
Add to your Claude Desktop configuration file:
**Location:**
- macOS: `~/Library/Application Support/Claude/claude_desktop_config.json`
- Windows: `%APPDATA%\Claude\claude_desktop_config.json`
- Linux: `~/.config/Claude/claude_desktop_config.json`
**Configuration:**
```json
{
"mcpServers": {
"whois-mcp": {
"command": "/path/to/bin/uvx",
"args": ["--from", "git+https://github.com/dadepo/whois-mcp.git", "whois-mcp"]
}
}
}
```
### With Claude Code CLI
Add the MCP server using the CLI:
```bash
claude mcp add --transport stdio whois-mcp -- uvx --from git+https://github.com/dadepo/whois-mcp.git whois-mcp
# Verify it was added
claude mcp list
# Start Claude Code
claude
```
### HTTP Server Mode
For web-based MCP clients or remote access:
**Start the server:**
```bash
uvx --from git+https://github.com/dadepo/whois-mcp.git whois-mcp-server
# With custom host/port
HTTP_HOST=0.0.0.0 HTTP_PORT=9000 uvx --from git+https://github.com/dadepo/whois-mcp.git whois-mcp-server
```
The server will be available at `http://127.0.0.1:8000/mcp` by default.
**Add to Claude Code (HTTP):**
```bash
claude mcp add --transport http whois-mcp-http http://127.0.0.1:8000/mcp
```
**Add to Claude Desktop (HTTP):**
```json
{
"mcpServers": {
"whois-mcp-http": {
"url": "http://127.0.0.1:8000/mcp"
}
}
}
```
## Tool Usage Examples
### Query Network Information
```
"What organization owns 8.8.8.8?"
→ Uses whois_query to retrieve registration details
```
### Expand AS-SETs
```
"What ASNs are in AS-HETZNER?"
→ Uses expand_as_set to list member ASNs
```
### Validate Route Objects
```
"Is there a route object for 185.1.1.0/24 originated by AS61417?"
→ Uses validate_route_object to check IRR databases
```
### Get Contact Information
```
"Who should I contact about abuse from AS15169?"
→ Uses contact_card to retrieve contact details
```
## Configuration
Environment variables (optional):
```bash
# Enable/disable RIR support (all default to true)
SUPPORT_RIPE=true # RIPE NCC (Europe/Middle East/Central Asia)
SUPPORT_ARIN=true # ARIN (North America)
SUPPORT_APNIC=true # APNIC (Asia-Pacific)
SUPPORT_AFRINIC=true # AfriNIC (Africa)
SUPPORT_LACNIC=true # LACNIC (Latin America & Caribbean)
# General Configuration
HTTP_TIMEOUT_SECONDS=10
WHOIS_CONNECT_TIMEOUT_SECONDS=5
WHOIS_READ_TIMEOUT_SECONDS=5
CACHE_TTL_SECONDS=60
CACHE_MAX_ITEMS=512
# Custom User-Agent string
USER_AGENT="whois-mcp/1.0"
# HTTP Server Configuration (only used by whois-mcp-server command)
HTTP_HOST=127.0.0.1
HTTP_PORT=8000
```
### RIR Support Control
Each RIR can be individually enabled or disabled using environment variables. All RIR endpoints are hardcoded for reliability:
- **RIPE NCC**: `whois.ripe.net`, `https://rest.db.ripe.net`
- **ARIN**: `whois.arin.net`, `https://whois.arin.net/rest`
- **APNIC**: `whois.apnic.net`, `https://rdap.apnic.net`
- **AfriNIC**: `whois.afrinic.net`, `https://rdap.afrinic.net/rdap`
- **LACNIC**: `whois.lacnic.net`, `https://rdap.lacnic.net/rdap`
Set any `SUPPORT_{RIR}=false` to disable specific RIRs. Tools are prefixed with the RIR name (e.g., `ripe_whois_query`, `arin_whois_query`, `apnic_contact_card`).
## Development
### Local Setup
```bash
# Clone the repository
git clone https://github.com/dadepo/whois-mcp.git
cd whois-mcp
# Install dependencies
uv sync
# Run in stdio mode
uv run whois-mcp
# Run HTTP server mode
uv run whois-mcp-server
# Run tests
uv run pytest
```
## License
This project is licensed under the MIT License - see the [LICENSE](LICENSE) file for details.
