@numbers-online
基本信息
A hosted, read-only Model Context Protocol server that gives an AI voice agent phone intelligence in one call — who is this inbound caller, and is this number one to think twice about — before it burns agent minutes. Four read-only tools: phone_lookup (validity, line type, range
使用下面的配置,将此服务器添加到你的 MCP 客户端。
{
"mcpServers": {
"numbers-online": {
"url": "https://numbers.online/api/v1/mcp",
"headers": {
"Authorization": "Bearer YOUR_API_KEY"
}
}
}
}Full bundle — validity, formatting, line type, range carrier, country, caller name (CNAM where available), STIR/SHAKEN verstat, a labeled spam signal, first-party DNC signal, signed receipt
Spam signal + verstat + first-party DNC signal + receipt (no name dip)
Deterministic only — validity, line type (mobile / fixed line / VoIP / …), carrier, country, formatting
First-party do-not-contact signal + signed receipt
Numbers Online — Phone Intelligence is a hosted, read‑only Model Context Protocol (MCP) server that provides phone intelligence to AI voice agents. It validates inbound caller identity and outbound number risk in a single API call before agent minutes are spent. The server is remote – no installation or local runtime is required.
Point any MCP client (Claude Desktop, Claude Code, IDEs, Vapi, Retell) at the Streamable HTTP endpoint https://numbers.online/api/v1/mcp with an API key in the Authorization header for tool calls. Discovery (tools/list) works without auth. Use tools like phone_lookup, caller_risk, line_type, or dnc_check by calling them with a phone number argument.
phone_lookup, caller_risk, line_type, dnc_checkline_type and dnc_check are freeThe DNC signal is first‑party: it reflects a do‑not‑contact preference registered and verified by the number’s owner inside Numbers Online. It is not a copy or replica of any government or licensed do‑not‑call registry.
None. The server is hosted – just point your MCP client at the provided endpoint URL. No software to install, no local processes to run.
Raw phone numbers are never logged or stored; they are hashed (SHA‑256) for privacy. Signed receipts contain only the hash and can be fetched without an API key. The MCP path is read‑only and stateless.
Every output is an advisory, low‑confidence supplementary signal. The calling agent keeps all routing and dialing decisions and remains responsible for compliance. Nothing asserts that a call is lawful, unlawful, “safe”, or “spam”. Reassigned‑number status is intentionally not offered.
Transport is Streamable HTTP (JSON‑RPC 2.0) at `https://numbers.online/api/v1/mcp`. Discovery (`tools/list`) is public; all tool calls require an `Authorization: Bearer <api_key>` header with an `mcp`‑scoped key.
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