MCP, MCP server
Tariff Resolver
An MCP server that turns your AI assistant into a US import duty research tool — built on official USITC Harmonized Tariff Schedule data (US Government public domain, 35,000+ tariff lines).
Compatibility: Not stated.
Grade B
Minor issues only, no Medium or High. Worth a quick look at the findings below before installing.
Not a guarantee. A hygiene check of the source at the commit shown, not a security audit.
NETWORK_NO_FIXED_HOST PERMISSION_SHELL_DECLARED SECRETS_ENV_READ OBFUSCATION_FILE_OVER_READ_CAP
Why this grade
- NETWORK_NO_FIXED_HOST Low
Makes a network call whose host is not written as a fixed address.
scripts/fetch_hts.py, line 5
Transport: curl subprocess (uses the system CA store, no certifi dependency - works behind corporate proxies). - PERMISSION_SHELL_DECLARED Note
Runs shell commands, and the manifest or description says so.
scripts/fetch_hts.py, line 31
r = subprocess.run(["curl", "-s", "--fail", "--max-time", "120", "-A", UA, url], - SECRETS_ENV_READ Note
Reads an environment variable whose name contains KEY, SECRET, TOKEN, PASSWORD or CREDENTIAL.
src/http.ts, line 24
const file = process.env.RADAR_KEYS_FILE; - OBFUSCATION_FILE_OVER_READ_CAP Note
A file was over the read cap and was not fully read.
data/hts_full.json, line 1
{"fetched_at": "2026-09-04", "source": "https://hts.usitc.gov/reststop/exportList", "license": "US Government public domain", "rows": [{"htsno": "0101", "indent": "0", "description
Any High, or two or more Medium findings, give D. One Medium gives C. Low findings or a security Note give B. Each code names a finding behind the letter.
Grades are a hygiene check of the source at the commit shown, on the date checked, not a security audit or a guarantee. The free directory grades are automated. Before release, a PlugVet engineer reviews every paid report and any grade we hold back, including all F grades, against the source code and the evidence we quote.
What was checked
Plain notes from the hygiene checks.
Permissions
Note
requests shell access. The manifest names this permission.
PERMISSION_SHELL_DECLARED
scripts/fetch_hts.py, line 31
r = subprocess.run(["curl", "-s", "--fail", "--max-time", "120", "-A", UA, url],
Install and update
Pass
No install-time script found, and dependencies are pinned or absent.
Network
Concern
can reach a host that is not written as a fixed address.
NETWORK_NO_FIXED_HOST
scripts/fetch_hts.py, line 5
Transport: curl subprocess (uses the system CA store, no certifi dependency - works behind corporate proxies).
Secrets
Note
reads an environment variable.
SECRETS_ENV_READ
src/http.ts, line 24
const file = process.env.RADAR_KEYS_FILE;
src/http.ts, line 29
const list = (process.env.RADAR_KEYS ?? "").split(",").map((s) => s.trim()).filter(Boolean);
Agent instructions
Pass
No instruction to ignore earlier instructions or to hide a step.
Obfuscation
Note
a file was over the read cap and was not fully read.
OBFUSCATION_FILE_OVER_READ_CAP
data/hts_full.json, line 1
{"fetched_at": "2026-09-04", "source": "https://hts.usitc.gov/reststop/exportList", "license": "US Government public domain", "rows": [{"htsno": "0101", "indent": "0", "description
docs/demo.webm, line 1
Eߣ�B��B��B�B�B��webmB��B��S�g�������M�t�M��S��I�fS���M��S��T�kS���M��S��T�gS��
Licence
Pass
A licence file is present (LICENSE).
Maintainer activity
Pass
The latest commit is within the last 365 days.
Note
Hygiene check of commit 3968b88125ec. requests shell access. The manifest names this permission. can reach a host that is not written as a fixed address. reads an environment variable. a file was over the read cap and was not fully read.
Date and source
Date checked:
github.com
Commit graded: 3968b88125ec09653c4c7fad9ec0f0dd403260e4
This link goes to the original host. PlugVet does not host or check what you download from there, and installing it is your own decision and risk.