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Numbers Online — phone intelligence MCP Server

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Numbers Online — phone intelligence is answering right now. Last checked 10 min ago. It exposes 4 tools. Last commit 16 Jun 2026.

Read-only phone intelligence for AI voice agents — line type, risk, DNC, signed receipts.

Uptime history 91 days of history · worst day 95%
91 days agonow
100.0%
Uptime 24h
91 of 91 checks
4
Tools
read from the server
569 ms
Response time
average over 24h
0
Stars
last commit 16 Jun 2026

Nothing serious here today

Today is the operative word: we check Numbers Online — phone intelligence 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 10 min ago.

run in your terminal
claude mcp add numbers-online --transport http https://numbers.online/api/v1/mcp
Settings → Connectors → Add custom connector, then paste this address
https://numbers.online/api/v1/mcp
~/.codex/config.toml
[mcp_servers.numbers-online]
url = "https://numbers.online/api/v1/mcp"
.cursor/mcp.json
{
  "mcpServers": {
    "numbers-online": {
      "url": "https://numbers.online/api/v1/mcp"
    }
  }
}
.vscode/mcp.json
{
  "servers": {
    "numbers-online": {
      "type": "http",
      "url": "https://numbers.online/api/v1/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.

caller
caller_risk
Return a labeled, low-confidence risk read for an inbound caller: a spam signal (0–100, higher = riskier), verstat passthrough, and a first-party do-not-contact (DNC) signal — without a name dip. A supplementary input to the agent's own policy, never a verdict on whether to accept or reject the call. Supply the call's STIR/SHAKEN verstat to fold it into the signal — a failed validation raises the risk.
dnc
dnc_check
Return a first-party do-not-contact signal (suppress / no_match / unknown) for a number, sourced ONLY from suppression preferences registered and verified by the number's own owner inside Numbers Online — never a copy of any government or licensed do-not-call registry. "suppress" = the owner asked not to be contacted on this channel; "no_match" = no suppression preference on record (absence of suppress is not consent); "unknown" = the number could not be evaluated. Comes with a signed receipt recording the status "as of T". Advisory input to the agent's own process — it does not assert that a call is lawful.
line
line_type
Return only the deterministic fields for a number — validity, line type (mobile / fixed line / VoIP / …), range carrier, country, and formatting. No paid dip; a free, fast classification a voice agent can call before deciding to enrich.
phone
phone_lookup
Return a supplementary, low-confidence intelligence bundle for a phone number: validity, formatting, line type, range carrier, country, caller name (CNAM, where available), STIR/SHAKEN verstat (supply the call's verstat to fold it into the spam signal), a labeled spam signal, and a first-party do-not-contact (DNC) signal — a suppression preference registered by the number's own owner, never a copy of any government registry. Advisory only — the agent keeps every routing and dialing decision.

Endpoints

URLTransportStateLatencyChecked
https://numbers.online/api/v1/mcp streamable-http answering 542 ms 10 min ago

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Numbers Online — phone intelligence — questions

Answers built from our own checks of this server.

What can Numbers Online — phone intelligence do?
It exposes 4 tools, read directly from the server on our last check. Among them: caller_risk, dnc_check, line_type, phone_lookup. 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 Numbers Online — phone intelligence 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 569 ms. The bar chart above shows every period we have measured.
How do I connect Numbers Online — phone intelligence?
Copy the ready config from this page. We generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each in the form that client actually reads. It is a remote server, so there is nothing to install — the client connects to the address.
Does Numbers Online — phone intelligence need an API key?
No. Numbers Online — phone intelligence 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 Numbers Online — phone intelligence?
It answers our handshake in 569 ms on average, which is faster than 19% of all working MCP servers we measure. That is on the slow side — worth knowing if the tool sits inside an interactive loop. The comparison comes from our own checks across the whole registry, every 15 minutes.
Is Numbers Online — phone intelligence open source?
The code is open source: it is published under the MIT licence and 0 stars on GitHub. The licence covers the code in the repository, not the hosted service at numbers.online, which runs on its operator's own terms.