SerialHunt
REMOTE · BIGBALLI.COM
US bill serial numbers: star note print runs and fancy serial patterns with exact odds.
Available components
Last scanned (3 hours ago)
Scores higher than 94% of remote servers
Reachable. Last reached 5 Nov 2026.
Category Finance and Payments
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. How we score → Why this is hard to score →
Endpoint Security83
- The endpoint's TLS certificate is valid, in date, and uses a strong key. View diagnostics → Pass
- No authorisation is required to call this server. Every tool declares its destructiveHint and none is destructive, so open access doesn't expose one. See how to fix → View diagnostics → Partial
- HTTPS is enforced; there's no plaintext access path. View diagnostics → Pass
- The HSTS (Strict-Transport-Security) header is present. View diagnostics → Pass
- DNSSEC is configured correctly; the domain's records validate against the full chain to the root. View diagnostics → Pass
Transport & Reachability100
- Verified streamable-http transport via a live MCP handshake. View diagnostics → Pass
Schema Quality & AI Usability72
- AI-judged instruction clarity (excellent).Pass
- 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. See how to fix → Fail
- Usage-examples check failed: none of the tools include examples. See how to fix → Fail
Stability & Change Management93
- Stability observed for 28 of 30 days with no destabilising changes; credit accrues until the full window elapses.Partial
Tool Coverage100
- 100% of tools have a non-trivial description (not blank, and not just the tool's name).Pass
- 100% of tool parameters carry a description.Pass
Tool Safety100
- No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.Pass
- We read all 4 captured tool definition(s), and no name or description among them implies an irreversible operation.Pass
- An AI judge read all 5 captured unit(s) of tool text and found none that tries to manipulate the model reading it.Pass
Capabilities100
- Implements a current MCP spec version (2026-07-28).Pass
Every change we have recorded for this component, newest first. Security-relevant changes are always shown. ▲ marks a change for the better, ▼ a change for the worse; unmarked changes are neutral.
- 4 Nov 26 +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.
- 2 Nov 26 +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.
- 31 Oct 26 +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.
- 28 Oct 26 +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.
- 26 Oct 26 +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.
- 24 Oct 26 +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.
- 22 Oct 26 +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.
- 20 Oct 26 +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.
Diagnostic detail from the automated scan of this channel: what the scanner observed at each step, so you can see exactly where a check passed or failed. It is informational only and never changes the trust score.
Captured 5 Nov 2026 · Probed https://bigballi.com/SerialHunt/mcp
TLS valid
Negotiated TLS 1.3 with TLS_AES_128_GCM_SHA256 .
| Subject | Issuer | Valid from | Valid until | Key | Signature | Serial |
|---|---|---|---|---|---|---|
| CN=bigballi.com | CN=WE1,O=Google Trust Services,C=US | 30 Oct 2026 | 28 Jan 2027 | ECDSA 256 | ECDSA-SHA256 | 67b746c6d233645113fcab0fe9a4c5e7 |
| SANs: bigballi.com, *.bigballi.com | ||||||
| CN=WE1,O=Google Trust Services,C=US (CA) | CN=GTS Root R4,O=Google Trust Services LLC,C=US | 13 Dec 2023 | 20 Feb 2029 | ECDSA 256 | ECDSA-SHA384 | 7ff31977972c224a76155d13b6d685e3 |
| CN=GTS Root R4,O=Google Trust Services LLC,C=US (CA) | CN=GlobalSign Root CA,OU=Root CA,O=GlobalSign nv-sa,C=BE | 15 Nov 2023 | 28 Jan 2028 | ECDSA 384 | SHA256-RSA | 7fe530bf331343bedd821610493d8a1b |
Background: What to check on a remote MCP endpoint →
DNSSEC secure
Validation of bigballi.com. — Secure
| Zone | DS | Keys | Algorithms | Outcome |
|---|---|---|---|---|
| . | trust_anchor | 20326, 38696 | 8, 8 | Verified |
| com. | present | 19718 | 13 | Verified |
| bigballi.com. | present | 2371 | 13 | Verified |
| bigballi.com. | Verified address RRset verified with the apex keys |
Authentication No authorisation required
The endpoint answered without asking for a token. Anyone who knows the URL can reach it.
| Result | No authorisation required |
|---|---|
| HTTP status | 200 |
| Header | Value |
|---|---|
| strict-transport-security | max-age=63072000; includeSubdomains; preload |
| content-security-policy | upgrade-insecure-requests; |
| x-content-type-options | nosniff |
| x-frame-options | SAMEORIGIN |
| referrer-policy | same-origin |
| permissions-policy | camera=(self), microphone=(self), geolocation=(self), usb=(), serial=(), bluetooth=(), midi=(), hid=(), browsing-topics=(), interest-cohort=() |
Background: How OAuth 2.1 works in the 2026 MCP spec →
Transports 2 probes
| Transport | URL | Outcome | Status | Location |
|---|---|---|---|---|
| streamable-http | https://bigballi.com/SerialHunt/mcp | Verified | 200 | |
| http (plaintext) | http://bigballi.com/SerialHunt/mcp | HTTPS enforced | 301 | https://bigballi.com/SerialHunt/mcp |
The tools this component advertises to a client, with an estimated token cost for each. Expand a tool to see its parameters and schema. The per-tool counts are indicative and are not scored directly; the schema's total context footprint is one signal in Schema Quality & AI Usability. A tool's description is untrusted text the model reads on every call, which is what makes this list a security surface and not just an inventory: how tool poisoning works →
check_serial Check a US bill's serial number ~228
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.
| Name | Type | Req | Description |
|---|---|---|---|
| denomination | integer | – | Face value in dollars: 1, 2, 5, 10, 20, 50 or 100. Needed for the star note print run. |
| serial | string | yes | 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". |
No output schema declared.
No examples provided.
find_star_runs Find the rarest US star note runs ~212
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.
| Name | Type | Req | Description |
|---|---|---|---|
| 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". |
No output schema declared.
No examples provided.
get_coverage Star note figures coverage ~82
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.
| Name | Type | Req | Description |
|---|---|---|---|
| denomination | integer | – | Face value in dollars: 1, 2, 5, 10, 20, 50 or 100. |
No output schema declared.
No examples provided.
list_serial_patterns List fancy serial number patterns ~71
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.
Input schema present but exposes no named parameters.
No output schema declared.
No examples provided.
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.
remote · bigballi.com
claude mcp add --transport http com-bigballi-serialhunt 'https://bigballi.com/SerialHunt/mcp'
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.