SerialHunt MCP Server

by bigballi Your server? Claim it

answering

SerialHunt is answering right now. Last checked 10 min ago. It exposes 4 tools. Last commit 7 Oct 2026.

US bill serial numbers: star note print runs and fancy serial patterns with exact odds.

Uptime history 5 days of history

5 days agonow

100.0%

Uptime 24h

91 of 91 checks

Tools

read from the server

437 ms

Response time

average over 24h

Stars

last commit 7 Oct 2026

Nothing serious here today

Today is the operative word: we check SerialHunt 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 10 min ago.

Claude Code Claude Desktop Codex Cursor VS Code

run in your terminal

claude mcp add serialhunt --transport http https://bigballi.com/SerialHunt/mcp

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

{
  "mcpServers": {
    "serialhunt": {
      "url": "https://bigballi.com/SerialHunt/mcp"
    }
  }
}

~/.codex/config.toml

[mcp_servers.serialhunt]
url = "https://bigballi.com/SerialHunt/mcp"

.cursor/mcp.json

{
  "mcpServers": {
    "serialhunt": {
      "url": "https://bigballi.com/SerialHunt/mcp"
    }
  }
}

.vscode/mcp.json

{
  "mcpServers": {
    "serialhunt": {
      "url": "https://bigballi.com/SerialHunt/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.

serial

check_serial

Whether one US paper money note is worth keeping, from its serial number: the Federal Reserve Bank, the series (worked out from the serial when it is not given), every collector pattern in the eight digits with its exact odds, and for a star (replacement) note the print run it came from with the number of notes printed and its rarity band. Covers Federal Reserve Notes from Series 1963 on. Gives no price and no authenticity judgement.

list_serial_patterns

The 17 fancy serial number patterns collectors look for on US bills (ladder, solid, radar, repeater, binary, birthday, low serial and the rest): a strict definition, an example, how many of the 100,000,000 possible eight-digit serials match, and the odds.

coverage

get_coverage

Which denominations and series the star note print run figures cover, with the Federal Reserve districts and number of star runs on record for each, the sources, the date of the last update and any known gap.

star

find_star_runs

The smallest US star note print runs on record, smallest first (top 10), optionally for one denomination, series or Federal Reserve Bank: the notes printed, the rarity band and the serial range to watch for. Runs printed only for uncut collector sheets, which never circulate, are left out unless include_sheet_runs is true.

Endpoints

URL	Transport	State	Latency	Checked
https://bigballi.com/SerialHunt/mcp	streamable-http	answering	424 ms	10 min ago

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SerialHunt — questions

Answers built from our own checks of this server.

What can SerialHunt do?

It exposes 4 tools, read directly from the server on our last check. Among them: check_serial, find_star_runs, get_coverage, list_serial_patterns. 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 SerialHunt 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 437 ms. The bar chart above shows every period we have measured.

How do I connect SerialHunt?

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.

Does SerialHunt need an API key?

No. SerialHunt 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 SerialHunt?

It answers our handshake in 437 ms on average, which is faster than 31% of all working MCP servers we measure. The comparison comes from our own checks across the whole registry, every 15 minutes.

Is SerialHunt open source?

Yes — it is published under the MIT licence 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.