Verified Numbers MCP Server

by jfortier93 Your server? Claim it

answering

Verified Numbers is answering right now. Last checked 3 min ago. Last commit 6 Aug 2026.

Current source-cited 2026 US tax constants and calculators for AI agents; every answer cites IRS.

Uptime history 26 days of history

26 days agonow

100.0%

Uptime 24h

91 of 91 checks

—

Tools

hidden behind auth

516 ms

Response time

average over 24h

Stars

last commit 6 Aug 2026

Nothing serious here today

Today is the operative word: we check Verified Numbers every 15 minutes and re-read its code on every release. Watch it and you find out the day that stops being true.

Connect this server

Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 3 min ago.

Claude Code Claude Desktop Codex Cursor VS Code

run in your terminal

claude mcp add verified-numbers-mcp --transport http https://verified-numbers.mcpize.run

~/Library/Application Support/Claude/claude_desktop_config.json

{
  "mcpServers": {
    "verified-numbers-mcp": {
      "url": "https://verified-numbers.mcpize.run"
    }
  }
}

~/.codex/config.toml

[mcp_servers.verified-numbers-mcp]
url = "https://verified-numbers.mcpize.run"

.cursor/mcp.json

{
  "mcpServers": {
    "verified-numbers-mcp": {
      "url": "https://verified-numbers.mcpize.run"
    }
  }
}

.vscode/mcp.json

{
  "mcpServers": {
    "verified-numbers-mcp": {
      "url": "https://verified-numbers.mcpize.run"
    }
  }
}

This endpoint answered with an authorization challenge — the server is running, but you need an API key or OAuth to use it.

Endpoints

URL	Transport	State	Latency	Checked
https://verified-numbers.mcpize.run	streamable-http	needs key	473 ms	3 min ago

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Verified Numbers — questions

Answers built from our own checks of this server.

Why is there no tool list for Verified Numbers?

The server answered our handshake with an authorization challenge, so it is running — but it will not describe its tools to an anonymous client. To see them you need to connect with your own credentials. We record it as alive, not as broken: 100.0% of checks in the last 24 hours got a reply.

Is Verified Numbers 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 516 ms. The bar chart above shows every period we have measured.

How do I connect Verified Numbers?

Copy the ready config from this page — we generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each with the file path that client actually reads. It is a remote server, so there is nothing to install — the client connects to the address. You will need your own key or an OAuth login: it refuses anonymous clients.

Does Verified Numbers need an API key?

Yes. Every time we knock, Verified Numbers answers with an authorization challenge instead of its tool list — that is how we know it is running and gated rather than broken. Bring your own credentials and it will talk.

How fast is Verified Numbers?

It answers our handshake in 516 ms on average, which is faster than 33% of all working MCP servers we measure. The comparison comes from our own checks across the whole registry, every 15 minutes.

Is Verified Numbers open source?

Yes — it is published under the MIT licence, written in Python and 0 stars on GitHub. The source link is on this page, so you can read exactly what it does with your data before you connect it.