Is the Numertel MCP server down?

mcp-registry/pl.numertel/numertel · v1.4.0

Verdict. Numertel MCP server answered 99.95% of Glimind's liveness checks over 30 days, better than 36% of MCP servers, with 966 ms median handshake and 48 outages in 90 days. Its agent-readiness grade is A (100/100) across 7 tools, costing an agent about 1,148 tokens to load. Checked every few minutes; no tool is ever called.

Data as of .

30-day measurements and how they compare with other MCP servers
MetricValueBetter than
Uptime, 30 days99.95%36% of MCP servers
Median handshake latency966 ms22% of MCP servers
p95 handshake latency3515 ms—
Checks in 30 days4,973—
Outages, 90 days48—
Median recovery3 min—
Agent-readiness score100/100 (A)94% of MCP servers
Tools7—
Tool-list size for an agent~1,148 tokens70% of MCP servers
Days observed29—
healthy
Last checked 2026-10-27 02:37 UTC · handshake 553ms

As of 2026-10-27 02:37 UTC, the Numertel MCP server is up with a Glimind reliability score of 94/100 (grade A). Over the last 30 days it answered 100% of Glimind's liveness checks. It had 47 outages in 90 days, with a median recovery of 3 minutes.

uptime (30d checks)
100%
checks observed
4,997
outages (90d)
47
tools
7

Polish phone number lookup: who called, spam and scam checks, UKE DNO registry, CERT phishing stats

Install Numertel MCP server

Add to Cursor Add to VS Code

Claude Code

claude mcp add --transport http numertel-mcp-server https://numertel.pl/api/mcp

Claude Desktop · Windsurf · Cline (mcpServers JSON)

{
  "mcpServers": {
    "numertel-mcp-server": {
      "type": "http",
      "url": "https://numertel.pl/api/mcp"
    }
  }
}

Third-party server, listed as discovered. Review its source before installing.

Agent-readiness: A (100/100)

A (100/100): 0 error(s), 0 warning(s) across 7 tool(s); ~1,148 tokens of tool definitions.
Scores higher than 94% of 15,771 MCP servers Glimind has audited.
Its tool list costs an agent ~1,148 tokens per session — lighter than 75% of servers.
99 → 100 since 2026-10-17
no tool-poisoning patterns
Schemas100
Descriptions100
Safety hints100
Token cost100
Client compatibility100
Protocol100
Reliability100
Stability100

No problems found.

Get alerted

Get an email or webhook when this server's readiness drops by 10+ points, tool-poisoning text appears, or a tool breaks:

curl -X POST https://glimind.com/v1/subscriptions -H 'content-type: application/json' -d '{"tools":["mcp-registry/pl.numertel/numertel"],"email":"[email protected]"}'

Agents: watch_tool({"toolId": "mcp-registry/pl.numertel/numertel"}) over MCP.

Passed

Largest tool definitions

Static checks of the advertised tools/list (schema, descriptions, annotations, tool-poisoning patterns, names, size) plus observed protocol, uptime, latency and contract changes. Read-only: no tool is ever called. Weights: schema 15, docs 20, safety 15, efficiency 15, compatibility 15, protocol 5, reliability 10, stability 5. Token counts are estimates (~3.6 characters per token).

Operator? Fix these, then re-check live. Embed the readiness badge:

Markdown
[![MCP agent-readiness](https://glimind.com/v1/readiness/badge/mcp-registry%2Fpl.numertel%2Fnumertel.svg)](https://glimind.com/server/mcp-registry%2Fpl.numertel%2Fnumertel?ref=badge)
HTML
<a href="https://glimind.com/server/mcp-registry%2Fpl.numertel%2Fnumertel?ref=badge"><img src="https://glimind.com/v1/readiness/badge/mcp-registry%2Fpl.numertel%2Fnumertel.svg" alt="MCP agent-readiness"></a>
reStructuredText
.. image:: https://glimind.com/v1/readiness/badge/mcp-registry%2Fpl.numertel%2Fnumertel.svg
   :target: https://glimind.com/server/mcp-registry%2Fpl.numertel%2Fnumertel?ref=badge
   :alt: MCP agent-readiness

Tool-definition log

Glimind records every version of this server's tool definitions in a signed, append-only transparency log. Current manifest sha256:a0e9e26b0fea1a4c…, first seen 2026-10-20, included at leaf 34232 of 76,884. Version history · verify what your client received.

Tools (7)

Compare: most reliable security servers · most reliable data servers · most reliable search servers

Know before your agent calls it

Glimind tells agents whether a server is up right now and how to call it, then fails over to a live alternative when it isn't.

Add Glimind — free, no signup:

Add to Cursor Add to VS Code

Claude Code

claude mcp add --transport http glimind https://glimind.com/mcp

Claude Desktop · Windsurf · Cline (mcpServers JSON)

{
  "mcpServers": {
    "glimind": {
      "type": "http",
      "url": "https://glimind.com/mcp"
    }
  }
}

FAQ

Is the Numertel MCP server down right now?

As of 2026-10-27 02:37 UTC, the Numertel MCP server is up with a Glimind reliability score of 94/100 (grade A). Over the last 30 days it answered 100% of Glimind's liveness checks. It had 47 outages in 90 days, with a median recovery of 3 minutes.

How many tools does Numertel MCP server provide?

Numertel MCP server advertises 7 tools, including check_phone_number, check_scam_domain, fetch, find_official_number, recent_scam_domains.

How do I install Numertel MCP server?

Point your MCP client at this streamable-http endpoint: https://numertel.pl/api/mcp

Is the Numertel MCP server safe to connect to an AI agent?

Glimind scanned all 7 tool definitions for tool-poisoning patterns — hidden or invisible characters, instructions that override the model, concealment from the user, requests to read credential or MCP config files, conversation exfiltration and cross-tool shadowing — and found none. This checks what the server tells the model, not what its code does; review the source before granting access to sensitive data.

Operator of Numertel MCP server?

Status page: 90-day uptime, every outage and how long it lasted.

Claim this listing to get the Verified operator marker, a remediation checklist and owner analytics, or embed the live badge from any of the tool pages above. Maintainers: alerts, deploy attestation and monthly reports.

Status is an automated estimate from Glimind's liveness checks (handshake and tool listing only; no tool is ever called) and may lag or differ from your network. Glimind is not affiliated with this server or its operator. Operator? Request a correction or opt out at https://glimind.com/opt-out.

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