MCP.Market

SerialHunt MCP server

online · 100% uptime
by bigballi.com·com.bigballi/serialhunt·v1.0.0
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US bill serial numbers: star note print runs and fancy serial patterns with exact odds.

A89/100grade A
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Safety scan
A89/100

full report

Adoption
Growing

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If you have run it, two minutes of your experience saves the next person an afternoon.

SerialHunt tools (4)

write = sends, deletes, buys or posts
  • check_serialFree

    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.

  • find_star_runsFree

    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.

  • get_coverageFree

    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.

  • list_serial_patternsFree

    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.

Public scan report

scanner v0.1.10 · 2026-10-13 · same rubric, same numbers if you re-run it

no findings
  • –Code scanremote-only server, no package to scann/a
  • Live reliabilityremote reachable in 2783ms17/20
  • Tool poisoning4 tool descriptions checked15/15
  • Auth qualityopen endpoint, read-only tools10/15
  • Maintenancelast push 6 days ago15/15
  • Maintainer identityregistry namespace matches repository owner; GitHub account older than a year; website matches verified namespace10/10
Overall 89/100. Components that don't apply are left out of the denominator. Any critical finding is an F.RubricAppeal a findingJSON

How SerialHunt compares

Against every graded MCP server, from our own scans and uptime checks. Updated after each scan run.

Safety score
89/100
higher than 80% of 48,255 servers
Tools
4
the typical server has 7
Tools that change things
0%
typical: 0%. Fewer write tools means less an agent can break
Uptime
100%
of our recent checks; the typical remote server answers 100%
Response time
2 ms
faster than 100% of 30,031 servers

What its tools let an agent do: 4 read

Install SerialHunt in Claude Code, Cursor or VS Code

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

What the publisher says

From the SerialHunt repository's README, as published. We do not edit it. Read it on GitHub

SerialHunt for Claude and other MCP clients

Ask an AI assistant whether a US bill is worth keeping and get an answer from government production figures instead of memory: the star note print run a serial came from and how many notes shared it, every fancy pattern in the digits with its exact odds, and the rarest star runs to watch for.

This repository holds:

  • the connection details for the SerialHunt remote MCP server at https://bigballi.com/SerialHunt/mcp,
  • a Claude plugin that adds that server plus a paper-money-serials skill, which teaches Claude how to read the numbers.

The server is run by SerialHunt. Its star note figures come from the Bureau of Engraving and Printing's production reports, through the uspapermoney.info archive for Series 1963 to 2017A, and it updates weekly. The same answers are on the web lookup.

What you can ask

  • "I got a $1 bill with serial A 032 12345 ★, Series 2017A. Is it rare?"
  • "Is MB 123 45678 C on a $20 a fancy serial number?"
  • "Which $2 star notes had the smallest print runs?"
  • "What is a radar serial number, and how rare is it?"

Tools

All tools are read-only (readOnlyHint: true) and need no account.

SerialHunt gives no prices and makes no authenticity claims, on purpose.

Setup

Claude (claude.ai, Desktop, mobile)

Settings → Connectors → Add custom connector, then paste https://bigballi.com/SerialHunt/mcp. No sign-in is needed.

Claude Code

Install the plugin, which adds the server and the paper-money-serials skill:

/plugin marketplace add BigBalli/serialhunt-mcp
/plugin install serialhunt@serialhunt

Or add only the server:

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

Other MCP clients

Any client that supports remote MCP servers over Streamable HTTP can use https://bigballi.com/SerialHunt/mcp with no credentials. The server speaks protocol versions 2026-07-28, 2025-11-25, 2025-06-18 and 2025-03-26 and answers with JSON (no SSE, no sessions).

Privacy

The server receives the tool name and its arguments (for example a serial number and a denomination), uses them to answer, and does not store them. It never sees your conversation or your account. Full policy: bigballi.com/SerialHunt/privacy.

Support

Email g@bigballi.com, or see bigballi.com/SerialHunt/connect.

License

The contents of this repository are released under the MIT License. The production figures served by the SerialHunt MCP server are not part of this repository.

Nothing above is checked by us. What we check is on the safety report.

SerialHunt: common questions

Is SerialHunt MCP server safe?
Yes, by our scan: it is graded A (89/100). Read the SerialHunt safety report
How do I install SerialHunt?
It runs remotely at bigballi.com. Add it to Claude Code, Cursor, VS Code or Claude Desktop with the snippets above, or call it through the mcp.market gateway without installing anything.
Does SerialHunt need an API key?
Not as far as the registry entry and our scan can tell: no credentials are declared or required.
Is SerialHunt maintained?
The last commit was 28 days ago (2026-10-07). The latest release is v1.0.0.
Is SerialHunt up?
100% of our last 28 checks got an answer. We check remote servers about four times a day.
How does SerialHunt compare with other MCP servers?
safety score 89/100 (higher than 80% of 48,255 servers); tools 4 (the typical server has 7); tools that change things 0% (typical: 0%. Fewer write tools means less an agent can break). Full comparison.