Dutyfinch
REMOTE · DUTYFINCH.CYBERMAXTOOLS.COM
US tariff API + MCP: HTS duty rates, Section 301 lists. Keys $19/mo; 50 free calls a day.
Available components
Last scanned (21 hours ago)
Scores higher than 69% of remote servers
Reachable. Last reached 22 Oct 2026.
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 Security74
- 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
- HSTS check failed: the Strict-Transport-Security header is absent. See how to fix → View diagnostics → Fail
- DNSSEC check failed: this domain isn't protected by DNSSEC. See how to fix → View diagnostics → Fail
Transport & Reachability100
- Verified streamable-http transport via a live MCP handshake. View diagnostics → Pass
Schema Quality & AI Usability77
- AI-judged instruction clarity (good).Pass
- Tool/resource definitions use about 339 tokens (~84/item across 4 items; 4 tools + 0 resources), lean.Pass
- Usage-examples check failed: none of the tools include examples. See how to fix → Fail
Stability & Change Management43
- Stability observed for 13 of 30 days with no destabilising changes; credit accrues until the full window elapses.Partial
Tool Coverage75
- 100% of tools have a non-trivial description (not blank, and not just the tool's name).Pass
- 25% of tool parameters carry a description.Partial
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 supported MCP spec version (2025-11-25); the latest is 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.
- 20 Oct 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 33 to 37. That category is still filling its 30-day observation window: 10 days of observed history at the previous scan, 11 at this one. The score rises as the window fills, whether or not the server changes.
- 18 Oct 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 27 to 30. That category is still filling its 30-day observation window: 8 days of observed history at the previous scan, 9 at this one. The score rises as the window fills, whether or not the server changes.
- 16 Oct 26 +11
- Transport: fail → pass ▲ security
- 15 Oct 26 −10
- Transport: pass → fail ▼ security
- 14 Oct 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 13 to 17. That category is still filling its 30-day observation window: 4 days of observed history at the previous scan, 5 at this one. The score rises as the window fills, whether or not the server changes.
- 12 Oct 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 3 to 10. That category is still filling its 30-day observation window: 1 days of observed history at the previous scan, 3 at this one. The score rises as the window fills, whether or not the server changes.
- 10 Oct 26 70
First indexed and scored.
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 22 Oct 2026 · Probed https://dutyfinch.cybermaxtools.com/mcp?via=mcp-registry
TLS valid
Negotiated TLS 1.3 with TLS_AES_128_GCM_SHA256 .
| Subject | Issuer | Valid from | Valid until | Key | Signature | Serial |
|---|---|---|---|---|---|---|
| CN=cybermaxtools.com | CN=WE1,O=Google Trust Services,C=US | 3 Oct 2026 | 1 Jan 2027 | ECDSA 256 | ECDSA-SHA256 | b3deece1169d300edb0fc98c9038e1 |
| SANs: cybermaxtools.com, dutyfinch.cybermaxtools.com, *.dutyfinch.cybermaxtools.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 insecure
Validation of dutyfinch.cybermaxtools.com. — Not signed
| Zone | DS | Keys | Algorithms | Outcome |
|---|---|---|---|---|
| . | trust_anchor | 20326, 38696 | 8, 8 | Verified |
| com. | present | 19718 | 13 | Verified |
| cybermaxtools.com. | absent | Unsigned (proven) parent-signed NSEC/NSEC3 proves an unsigned delegation |
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 |
Background: How OAuth 2.1 works in the 2026 MCP spec →
Transports 2 probes
| Transport | URL | Outcome | Status | Location |
|---|---|---|---|---|
| streamable-http | https://dutyfinch.cybermaxtools.com/mcp?via=mcp-registry | Verified | 200 | |
| http (plaintext) | http://dutyfinch.cybermaxtools.com/mcp?via=mcp-registry | HTTPS enforced | 301 | https://dutyfinch.cybermaxtools.com/mcp?via=mcp-registry |
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 →
china_deal_status 2026 US–China reduction list ~52
Status of the 2026 US–China tariff reduction list (pending / notice_published / published) and, with code, whether that HTS code is on it.
| Name | Type | Req | Description |
|---|---|---|---|
| code | string | – | – |
No output schema declared.
No examples provided.
lookup_hts_code Look up an HTS code ~94
US tariff lookup for one HTS code (4, 6, 8 or 10 digits): description, general/special/column 2 duty rates, Section 301 China list status with the additional rate, exclusions, and the 2026 US–China reduction flag.
| Name | Type | Req | Description |
|---|---|---|---|
| code | string | yes | HTS code, e.g. 8516.60.40 or 9503000013 |
No output schema declared.
No examples provided.
search_hts Search the HTS by product ~63
Find US HTS codes from product words (e.g. "air fryer", "wooden toys") or a code prefix. Returns codes with description, general rate and Section 301 China summary.
| Name | Type | Req | Description |
|---|---|---|---|
| limit | integer | – | – |
| q | string | yes | – |
No output schema declared.
No examples provided.
section301_lists Section 301 China lists ~50
All Section 301 China tariff headings (lists 1, 2, 3, 4A, 4B, 2024 increases, exclusions) with rates, dates and code counts.
Input schema present but exposes no named parameters.
No output schema declared.
No examples provided.
How do I install the Dutyfinch MCP server?
Dutyfinch is a hosted endpoint at https://dutyfinch.cybermaxtools.com/mcp?via=mcp-registry, 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 · dutyfinch.cybermaxtools.com
claude mcp add --transport http dev-workers-cybermax-tools-cybermax-dutyfinch 'https://dutyfinch.cybermaxtools.com/mcp?via=mcp-registry'
What is the Dutyfinch MCP server?
Dutyfinch is an MCP server listed in the public MCP registry as dev.workers.cybermax-tools.cybermax/dutyfinch. US tariff API + MCP: HTS duty rates, Section 301 lists. Keys $19/mo; 50 free calls a day. This page covers its hosted endpoint (https://dutyfinch.cybermaxtools.com/mcp?via=mcp-registry).
Is the Dutyfinch MCP server safe to use?
Dutyfinch scores 75 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 Dutyfinch MCP server expose?
Dutyfinch exposes 4 tools: lookup_hts_code, search_hts, section301_lists, china_deal_status. Their descriptions and schemas cost roughly 259 tokens of context every time the server is loaded.
Does the Dutyfinch MCP server require authentication?
No. We connected to Dutyfinch without credentials and it answered, so anything it exposes is reachable by anyone who knows the address.
Is the Dutyfinch MCP server still maintained?
Dutyfinch is still listed as active in the MCP registry. We last reached this channel on 22 October 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.