# SerialHunt (remote · bigballi.com)

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

- Trust score: 87/100 (high trust)
- Change this week: +3
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-11-05

## Components

- remote · `bigballi.com`: 87/100 (this document), [markdown](https://verifymcp.io/servers/com-bigballi-serialhunt/serialhunt-mcp.md), [page](https://verifymcp.io/servers/com-bigballi-serialhunt/serialhunt-mcp)

## Channel facts

- Endpoint: `https://bigballi.com/SerialHunt/mcp`
- Transports: `streamable-http`
- Auth: `none`
- Version: `1.0.0`

## Trust breakdown

How this component scores in each security and reliability category. Every signal is checked automatically against the live server, and we only credit what we can confirm. Scores are 0–100 per category. Scoring method: https://verifymcp.io/docs/scoring (what has changed: https://verifymcp.io/docs/scoring/changelog)

Scored 2026-11-05.

- **Endpoint Security**: 83/100
  - The endpoint's TLS certificate is valid, in date, and uses a strong key.
  - No authorisation is required to call this server. Every tool declares its destructiveHint and none is destructive, so open access doesn't expose one.
  - HTTPS is enforced; there's no plaintext access path.
  - The HSTS (Strict-Transport-Security) header is present.
  - DNSSEC is configured correctly; the domain's records validate against the full chain to the root.
- **Transport & Reachability**: 100/100
  - Verified streamable-http transport via a live MCP handshake.
- **Schema Quality & AI Usability**: 72/100
  - AI-judged instruction clarity (excellent).
  - Context-footprint check failed: tool/resource definitions use about 742 tokens (~185/item across 4 items; 4 tools + 0 resources), over budget; trim descriptions and params.
  - Usage-examples check failed: none of the tools include examples.
- **Stability & Change Management**: 93/100
  - Stability observed for 28 of 30 days with no destabilising changes; credit accrues until the full window elapses.
- **Tool Coverage**: 100/100
  - 100% of tools have a non-trivial description (not blank, and not just the tool's name).
  - 100% of tool parameters carry a description.
- **Tool Safety**: 100/100
  - No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.
  - We read all 4 captured tool definition(s), and no name or description among them implies an irreversible operation.
  - An AI judge read all 5 captured unit(s) of tool text and found none that tries to manipulate the model reading it.
- **Capabilities**: 100/100
  - Implements a current MCP spec version (2026-07-28).

## Install

### How do I install the SerialHunt MCP server?

SerialHunt is a hosted endpoint at https://bigballi.com/SerialHunt/mcp, so there is nothing to install locally. Ready-made configuration for Claude, Cursor, VS Code, Codex and 5 more is on this page, copied from each client's own documentation.

### Claude

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

### Cursor

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

### VS Code

```json
{
  "servers": {
    "com-bigballi-serialhunt": {
      "type": "http",
      "url": "https://bigballi.com/SerialHunt/mcp"
    }
  }
}
```

### Codex

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

### opencode

```json
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "com-bigballi-serialhunt": {
      "type": "remote",
      "url": "https://bigballi.com/SerialHunt/mcp",
      "enabled": true
    }
  }
}
```

### OpenClaw

```bash
openclaw mcp add com-bigballi-serialhunt --url 'https://bigballi.com/SerialHunt/mcp' --transport streamable-http
```

### Hermes

```yaml
mcp_servers:
  com-bigballi-serialhunt:
    url: "https://bigballi.com/SerialHunt/mcp"
```

### Netclaw

```json
{
  "McpServers": {
    "com-bigballi-serialhunt": {
      "Transport": "http",
      "Url": "https://bigballi.com/SerialHunt/mcp"
    }
  }
}
```

### Vellum

```bash
assistant mcp add com-bigballi-serialhunt -t streamable-http -u 'https://bigballi.com/SerialHunt/mcp'
```

### Other

```json
{
  "mcpServers": {
    "com-bigballi-serialhunt": {
      "type": "http",
      "url": "https://bigballi.com/SerialHunt/mcp"
    }
  }
}
```

The mcpServers block is a cross-client convention. Remote transports vary, so check your client's docs.

## Changelog

Every change recorded for this component, newest first. Days that predate change tracking, or that we cannot explain, say so: "we were watching and nothing happened" and "we were not watching" are different claims.

### 2026-11-04 (score 87, +1)

No change was recorded against any check on this day. Stability & Change Management went from 87 to 90. That category is still filling its 30-day observation window: 26 days of observed history at the previous scan, 27 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-11-02 (score 86, +1)

No change was recorded against any check on this day. Stability & Change Management went from 80 to 83. That category is still filling its 30-day observation window: 24 days of observed history at the previous scan, 25 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-10-31 (score 85, +1)

No change was recorded against any check on this day. Stability & Change Management went from 73 to 77. That category is still filling its 30-day observation window: 22 days of observed history at the previous scan, 23 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-10-28 (score 84, +1)

No change was recorded against any check on this day. Stability & Change Management went from 63 to 67. That category is still filling its 30-day observation window: 19 days of observed history at the previous scan, 20 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-10-26 (score 83, +1)

No change was recorded against any check on this day. Stability & Change Management went from 57 to 60. That category is still filling its 30-day observation window: 17 days of observed history at the previous scan, 18 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-10-24 (score 82, +1)

No change was recorded against any check on this day. Stability & Change Management went from 50 to 53. That category is still filling its 30-day observation window: 15 days of observed history at the previous scan, 16 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-10-22 (score 81, +1)

No change was recorded against any check on this day. Stability & Change Management went from 43 to 47. That category is still filling its 30-day observation window: 13 days of observed history at the previous scan, 14 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-10-20 (score 80, +1)

No change was recorded against any check on this day. Stability & Change Management went from 37 to 40. That category is still filling its 30-day observation window: 11 days of observed history at the previous scan, 12 at this one. The score rises as the window fills, whether or not the server changes.

## MCP tools (4)

### `check_serial` (~228 tokens)

Check a US bill's serial number

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.

Input parameters:

- `denomination` (integer): Face value in dollars: 1, 2, 5, 10, 20, 50 or 100. Needed for the star note print run.
- `serial` (string, required): The serial as printed, spaces optional, e.g. "MB 123 45678 C", "B12345678C", or "A 000 00047 *" with * or ★ for the star.
- `series` (string): The series printed on the note, only if known, as printed beside the portrait, e.g. "2017A", "2021", "1995".

### `find_star_runs` (~212 tokens)

Find the rarest US star note 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.

Input parameters:

- `denomination` (integer): Face value in dollars: 1, 2, 5, 10, 20, 50 or 100.
- `district` (string): Federal Reserve Bank letter: A Boston, B New York, C Philadelphia, D Cleveland, E Richmond, F Atlanta, G Chicago, H St. Louis, I Minneapolis, J Kansas City, K Dallas, L San Francisco.
- `include_sheet_runs` (boolean): Also list runs printed only for uncut sheets (default false).
- `series` (string): Only this series, as printed beside the portrait, e.g. "2017A", "2021", "1995".

### `list_serial_patterns` (~71 tokens)

List fancy serial number 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.

### `get_coverage` (~82 tokens)

Star note figures 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.

Input parameters:

- `denomination` (integer): Face value in dollars: 1, 2, 5, 10, 20, 50 or 100.

## Diagnostics

Captured diagnostic sections: TLS, DNSSEC, Authorisation, Transports. The full working is on the page: https://verifymcp.io/servers/com-bigballi-serialhunt/serialhunt-mcp#diagnostics

## Score history

- 2026-11-05: 87
- 2026-11-04: 87
- 2026-11-03: 86
- 2026-11-02: 86
- 2026-11-01: 85
- 2026-10-31: 85
- 2026-10-30: 84
- 2026-10-29: 84
- 2026-10-28: 84
- 2026-10-27: 83
- 2026-10-26: 83
- 2026-10-25: 82
- 2026-10-24: 82
- 2026-10-23: 81
- 2026-10-22: 81
- 2026-10-21: 80
- 2026-10-20: 80
- 2026-10-19: 79
- 2026-10-18: 79
- 2026-10-17: 78
- 2026-10-16: 78
- 2026-10-15: 77
- 2026-10-14: 77
- 2026-10-13: 77
- 2026-10-12: 76
- 2026-10-10: 75
- 2026-10-09: 75

## Common questions

### What is the SerialHunt MCP server?

SerialHunt is an MCP server listed in the public MCP registry as com.bigballi/serialhunt. US bill serial numbers: star note print runs and fancy serial patterns with exact odds. This page covers its hosted endpoint (https://bigballi.com/SerialHunt/mcp).

### Is the SerialHunt MCP server safe to use?

SerialHunt scores 87 out of 100 on VerifyMCP. That is a record of what we were able to check automatically, not an endorsement. The category breakdown on this page shows every signal behind the number, including the ones we could not confirm.

### What tools does the SerialHunt MCP server expose?

SerialHunt exposes 4 tools: check_serial, find_star_runs, list_serial_patterns, get_coverage. Their descriptions and schemas cost roughly 593 tokens of context every time the server is loaded.

### Does the SerialHunt MCP server require authentication?

No. We connected to SerialHunt without credentials and it answered, so anything it exposes is reachable by anyone who knows the address.

### Is the SerialHunt MCP server still maintained?

SerialHunt is still listed as active in the MCP registry. We last reached this channel on 5 November 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.

## Links

- Remote endpoint: https://bigballi.com/SerialHunt/mcp
- Repository: https://github.com/BigBalli/serialhunt-mcp
- Website: https://bigballi.com/SerialHunt/connect
- Changelog RSS feed: https://verifymcp.io/servers/com-bigballi-serialhunt/serialhunt-mcp.xml
- Changelog JSON feed: https://verifymcp.io/servers/com-bigballi-serialhunt/serialhunt-mcp.json
- HTML version of this page: https://verifymcp.io/servers/com-bigballi-serialhunt/serialhunt-mcp