MCP, MCP server
io.github.andesstriker/yahoo-mail-mcp
Read, search, organize, and clean up a Yahoo Mail account from Claude — over plain IMAP, no Yahoo API keys required.
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.
INSTALL_UNPINNED NETWORK_NO_FIXED_HOST SECRETS_PATH_DOTENV SECRETS_ENV_READ
Why this grade
- INSTALL_UNPINNED Low
Dependencies use a range or git URL with no lockfile.
requirements.txt, line 1
mcp<2 - NETWORK_NO_FIXED_HOST Low
Makes a network call whose host is not written as a fixed address.
server.py, line 202
resp = client.fetch([uid], ["ENVELOPE", "FLAGS"]) - SECRETS_PATH_DOTENV Low
Mentions a .env file.
server.py, line 27
# Load .env from this file's own directory, not the process's cwd - the cwd - SECRETS_ENV_READ Note
Reads an environment variable whose name contains KEY, SECRET, TOKEN, PASSWORD or CREDENTIAL.
server.py, line 73
app_password = os.environ.get("YAHOO_APP_PASSWORD")
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
Pass
No shell or command execution found, and no extra permission was declared.
Install and update
Concern
dependencies are not pinned.
INSTALL_UNPINNED
requirements.txt, line 1
mcp<2
Network
Concern
can reach a host that is not written as a fixed address.
NETWORK_NO_FIXED_HOST
server.py, line 202
resp = client.fetch([uid], ["ENVELOPE", "FLAGS"])
server.py, line 225
fetched = client.fetch(uids, ["ENVELOPE", "FLAGS"])
server.py, line 420
fetched = client.fetch([uid], ["BODY.PEEK[]"])
Show more
server.py, line 493
fetched = client.fetch([uid], ["BODY.PEEK[]"])
test_connection.py, line 35
fetched = client.fetch(uids, ["ENVELOPE"])
Secrets
Concern
reads a credential or environment file.
SECRETS_ENV_READ SECRETS_PATH_DOTENV
server.py, line 27
# Load .env from this file's own directory, not the process's cwd - the cwd
server.py, line 30
load_dotenv(Path(__file__).resolve().parent / ".env")
server.py, line 73
app_password = os.environ.get("YAHOO_APP_PASSWORD")
Show more
server.py, line 67
via .env by python-dotenv). Yields an imapclient.IMAPClient configured
server.py, line 77
"Set them in a .env file (see .env.example) or your shell environment. "
test_connection.py, line 5
and YAHOO_APP_PASSWORD (from .env or the shell environment) work before
.gitignore, line 3
*.pyc
CONTRIBUTING.md, line 8
copy `.env.example` to `.env` with your own Yahoo credentials). Before
README.md, line 64
cp .env.example .env
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 717a36662b40. dependencies are not pinned. can reach a host that is not written as a fixed address. reads a credential or environment file.
Date and source
Date checked:
github.com
Commit graded: 717a36662b40b47af5f9d0c3ad9a5de7ea002f88
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