Claude Code, Skill
Whetstone Mcp
Evaluate an MCP server across a weak and a strong model, then close the gap by changing the server.
Compatibility: Not stated.
Grade C
One Medium finding. Read the report before installing.
Not a guarantee. A hygiene check of the source at the commit shown, not a security audit.
PERMISSION_SHELL_UNDECLARED
Why this grade
- PERMISSION_SHELL_UNDECLARED Medium
Runs shell commands that the manifest or description does not mention.
skills/whetstone-mcp/SKILL.md, line 362
auth = subprocess.run(["claude", "auth", "status"], env=probe_env,
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
Concern
requests shell access. No manifest field names shell or command execution. can delete files.
PERMISSION_SHELL_UNDECLARED PERMISSION_DELETE_FILES
skills/whetstone-mcp/SKILL.md, line 362
auth = subprocess.run(["claude", "auth", "status"], env=probe_env,
skills/whetstone-mcp/SKILL.md, line 369
p = subprocess.run(["claude", "-p", "reply OK", "--model", model],
skills/whetstone-mcp/harness/whetstone_mcp/bench.py, line 222
shutil.rmtree(ws, ignore_errors=True)
Show more
skills/whetstone-mcp/harness/whetstone_mcp/bench.py, line 287
shutil.rmtree(path, ignore_errors=True)
skills/whetstone-mcp/harness/whetstone_mcp/changes.py, line 35
proc = subprocess.run(["git", *args], cwd=repo, capture_output=True, text=True)
skills/whetstone-mcp/harness/whetstone_mcp/changes.py, line 61
exists = subprocess.run(["git", "show-ref", "--verify", "--quiet",
skills/whetstone-mcp/harness/whetstone_mcp/changes.py, line 111
restored = subprocess.run(["git", "checkout", "--", rel], cwd=repo,
skills/whetstone-mcp/harness/whetstone_mcp/changes.py, line 143
probe = subprocess.run(["git", "rev-parse", f"HEAD:{rel}"], cwd=repo,
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
skills/whetstone-mcp/sandbox/server/defective_server.py, line 32
def fetch(key: str) -> str:
skills/whetstone-mcp/sandbox/server/fixed_server.py, line 52
def fetch(key: str) -> str:
Secrets
Pass
No read of a credential file or secret environment variable found.
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 dc4447f4dfda. requests shell access. No manifest field names shell or command execution. can delete files. can reach a host that is not written as a fixed address.
Date and source
Date checked:
github.com
Commit graded: dc4447f4dfda223a6ad60a50ab8d0eab9f670069
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