Prerequisites
- A Range API key — get one at app.range.org/keys
- An MCP-compatible AI client (Claude Desktop, Claude.ai, Cursor, or any OpenAI-compatible tool)
You use the same API key you already have. No new credentials, no separate signup.
MCP endpoint
https://api.range.org/ai/mcp
Connect your client
Claude Desktop
Claude.ai
Cursor
Test with curl
Open your Claude Desktop config file:
- macOS:
~/Library/Application Support/Claude/claude_desktop_config.json
- Windows:
%APPDATA%\Claude\claude_desktop_config.json
Add the Range server under mcpServers:{
"mcpServers": {
"range": {
"type": "http",
"url": "https://api.range.org/ai/mcp",
"headers": {
"Authorization": "Bearer your_api_key_here"
}
}
}
}
In Claude.ai, go to Settings → Integrations → Add MCP Server:
- Name: Range
- URL:
https://api.range.org/ai/mcp
- Authentication: Custom header
- Header:
Authorization
- Value:
Bearer your_api_key_here
Save and refresh. Range tools will be available in any new conversation. Open Cursor settings (Cmd/Ctrl + ,) and navigate to Features → MCP Servers.Add a new server:{
"range": {
"type": "http",
"url": "https://api.range.org/ai/mcp",
"headers": {
"Authorization": "Bearer your_api_key_here"
}
}
}
.cursor/mcp.json file in any project directory to scope it per-project. Verify the endpoint is reachable and list all available tools:curl -X POST https://api.range.org/ai/mcp \
-H "Content-Type: application/json" \
-H "Accept: application/json, text/event-stream" \
-H "Authorization: Bearer your_api_key_here" \
-d '{"jsonrpc":"2.0","id":1,"method":"tools/list","params":{}}'
Your first investigation
Once connected, paste this prompt into your AI client:
Investigate this wallet and tell me if I should be concerned about it:
5Q544fKrFoe6tsEbD7S8EmxGTJYAKtTVhAW5Q5pge4j1
Check its risk score, see if it's sanctioned, find its top counterparties,
and summarize what kind of entity this appears to be.
get_address_risk, check_sanctions, get_address_connections, and get_address_info autonomously and return a structured summary.
Next steps
