MCP, MCP server
mxprobe
Email verification for AI agents.
Compatibility: Not stated.
Grade D
Two or more Medium findings, or a High. Only try it in a sandbox.
Not a guarantee. A hygiene check of the source at the commit shown, not a security audit.
INSTALL_REMOTE_SCRIPT
Why this grade
- INSTALL_REMOTE_SCRIPT High
Fetches a script from the network and runs it (a pipe to a shell, or an install hook with a URL).
deploy/install.sh, line 3
# curl -fsSL https://raw.githubusercontent.com/andrewchmr/mxprobe/main/deploy/install.sh | bash
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.
If you think this grade is wrong, email [email protected] with the entry link and your evidence. We aim to acknowledge within two working days and decide within seven. If we confirm an error, we aim to correct it within 24 hours of confirming it. These are aims, not guarantees.
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
Pass
No shell or command execution found, and no extra permission was declared.
Install and update
Serious
install fetches a script from the network. README documents an installer that pipes a download into a shell. The docs document an installer that pipes a download into a shell.
INSTALL_REMOTE_SCRIPT INSTALL_DOCUMENTED_INSTALLER
deploy/README.md, line 37
curl -fsSL https://raw.githubusercontent.com/andrewchmr/mxprobe/main/deploy/install.sh | bash
deploy/install.sh, line 3
# curl -fsSL https://raw.githubusercontent.com/andrewchmr/mxprobe/main/deploy/install.sh | bash
deploy/install.sh, line 27
curl -fsSL https://deb.nodesource.com/setup_24.x | bash - >/dev/null
Network
Concern
can reach a host that is not written as a fixed address. can reach dl.cloudsmith.io. The description does not name that host.
NETWORK_NO_FIXED_HOST NETWORK_UNNAMED_HOST
deploy/install.sh, line 16
apt-get install -y -qq curl git ca-certificates debian-keyring debian-archive-keyring apt-transport-https gnupg >/dev/null
deploy/install.sh, line 20
curl -1sLf 'https://dl.cloudsmith.io/public/caddy/stable/gpg.key' | gpg --dearmor -o /usr/share/keyrings/caddy-stable-archive-keyring.gpg
deploy/install.sh, line 21
curl -1sLf 'https://dl.cloudsmith.io/public/caddy/stable/debian.deb.txt' > /etc/apt/sources.list.d/caddy-stable.list
Show more
deploy/install.sh, line 70
curl -fsS http://127.0.0.1:8787/v1/health && echo
deploy/install.sh, line 72
echo -n "reverse DNS of this box: "; dig +short -x "$(curl -fsS https://api.ipify.org)" || true
server/src/notify.ts, line 84
curl ${apiUrl}/v1/verify \\
server/src/bin/healthcheck.ts, line 19
const res = await fetch(`${apiUrl}/v1/health`, { signal: AbortSignal.timeout(5000) });
site/index.html, line 146
const res = await fetch(form.action, { method: "POST", headers: { "content-type": "application/json" }, body: JSON.stringify(data) });
Secrets
Concern
reads a credential or environment file.
SECRETS_PATH_DOTENV
deploy/install.sh, line 55
cp server/.env.example "$ENV_FILE"
deploy/push.sh, line 5
# the env file from server/.env.production when it exists, then runs
deploy/push.sh, line 17
--include '.env.example' --exclude '.env' --exclude '.env.*' \
Show more
deploy/push.sh, line 22
if [ -f "$ROOT/server/.env.production" ]; then
deploy/push.sh, line 24
scp -q "$ROOT/server/.env.production" "$HOST:/tmp/mxprobe.env"
.gitignore, line 2
*.log
.gitignore, line 3
.env
.gitignore, line 5
!.env.example
Agent instructions
Pass
No instruction to ignore earlier instructions or to hide a step.
Obfuscation
Pass
No encoded or minified payload found.
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 14988f9a9773. install fetches a script from the network. README documents an installer that pipes a download into a shell. The docs document an installer that pipes a download into a shell. can reach a host that is not written as a fixed address. can reach dl.cloudsmith.io. The description does not name that host. reads a credential or environment file.
Date and source
Date checked:
github.com
Commit graded: 14988f9a977386831b6de3f122a78dba89cfeaad
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.