Skills/PyPI/mcp-patch

mcp-patch@0.1.0

CAUTION· static only

Publisher claims: "Security scanner for Python MCP server code" Observed in sandbox: static analysis only — behavior not yet observed.

Registry PyPI (MCP server)Publisher 0-co · publishing for 237 daysInstalls 11Last detonated 6d ago
What would fix thisWatchDispute verdict

Coverage

Static only; nothing was run yet.

The label rests on the code, the instruction files and the publisher. The honeypot run replaces this verdict when it completes.

Before you give it your token

It will ask for
no credential variables read in the code
Where it talks to
no vendor host named in the code
What the honeypot saw
nothing has run yet
What we could not test
everything: the server has not run yet

Run it before you trust it. Nothing has run yet: the code was read, the server was not. `vet-skills try` runs this exact version in the honeypot in about a minute.

Never paste a credential into a chat, a ticket or a report, including ours. How the guard holds it.

Is [email protected] safe to install?

KillerSkills analysed it statically (a sandbox run is pending) on 2026-11-08 and scored it 59/100 (Caution). It is not known to be malicious, but it has behaviour or code a security policy should decide on before install. Notable findings: OS command execution function call detected. Summary: static analysis only — behavior not yet observed.

Behavior trace

Queued for honeypot run · static analysis only
t+CategoryObserved action

This version has not been detonated yet. The score above counts behavior as unknown (50/100), so it cannot read Verified until the honeypot run completes and replaces this verdict.

Static findings

CRITICAL
OS command execution function call detectedmcp_patch/checks.py:141 · OS command execution function call detected# os.system(f"...{param}...") or os.popen(...)Fix: Build commands from fixed arguments; do not interpolate untrusted strings into a shell.
AST05
MEDIUM
Python subprocess execution detectedtests/test_scanner.py:243 · Python subprocess execution detected" subprocess.run('echo %s' % name, shell=True)\n"Fix: Build commands from fixed arguments, never from interpolated strings; prefer an API client over shelling out.
AST05
MEDIUM
OS command execution function call detectedtests/test_scanner.py:46 · OS command execution function call detected"""os.system(f'...{param}...') must be flagged."""Fix: Build commands from fixed arguments; do not interpolate untrusted strings into a shell.
AST05
MEDIUM
OS command execution function call detectedtests/fixtures/vulnerable_server.py:37 · OS command execution function call detectedreturn os.popen(f"find / -name {pattern}").read()Fix: Build commands from fixed arguments; do not interpolate untrusted strings into a shell.
AST05
MEDIUM
Python subprocess execution detectedtests/test_scanner.py:224 · Python subprocess execution detected" subprocess.run('uptime', shell=True)\n"Fix: Build commands from fixed arguments, never from interpolated strings; prefer an API client over shelling out.
AST05
MEDIUM
OS command execution function call detectedtests/test_scanner.py:55 · OS command execution function call detected"""os.popen(f'...{param}...') must be flagged."""Fix: Build commands from fixed arguments; do not interpolate untrusted strings into a shell.
AST05
MEDIUM
OS command execution function call detectedtests/fixtures/vulnerable_server.py:30 · OS command execution function call detectedos.system(f"ls -la {path}")Fix: Build commands from fixed arguments; do not interpolate untrusted strings into a shell.
AST05
MEDIUM
Python subprocess execution detectedmcp_patch/checks.py:162 · Python subprocess execution detectedfix="Use subprocess.run([...], shell=False) instead of os.system/os.popen",Fix: Build commands from fixed arguments, never from interpolated strings; prefer an API client over shelling out.
AST05
MEDIUM
Python subprocess execution detectedtests/test_scanner.py:37 · Python subprocess execution detected"""subprocess.run(f'...{param}...', shell=True) must be flagged."""Fix: Build commands from fixed arguments, never from interpolated strings; prefer an API client over shelling out.
AST05
MEDIUM
Python subprocess execution detectedtests/fixtures/clean_server.py:23 · Python subprocess execution detectedresult = subprocess.run([cmd], shell=False, capture_output=True, text=True, timeout=10)Fix: Build commands from fixed arguments, never from interpolated strings; prefer an API client over shelling out.
AST05
MEDIUM
Python subprocess execution detectedtests/fixtures/clean_server.py:63 · Python subprocess execution detectedreturn subprocess.run(command, shell=True, capture_output=True, text=True).stdoutFix: Build commands from fixed arguments, never from interpolated strings; prefer an API client over shelling out.
AST05
MEDIUM
Python subprocess execution detectedtests/fixtures/vulnerable_server.py:23 · Python subprocess execution detectedresult = subprocess.run(f"echo {cmd}", shell=True, capture_output=True, text=True)Fix: Build commands from fixed arguments, never from interpolated strings; prefer an API client over shelling out.
AST05
MEDIUM
Python subprocess execution detectedtests/fixtures/vulnerable_server.py:43 · Python subprocess execution detectedsubprocess.Popen("gcc {}".format(source), shell=True)Fix: Build commands from fixed arguments, never from interpolated strings; prefer an API client over shelling out.
AST05
MEDIUM
Python subprocess execution detectedtests/test_scanner.py:205 · Python subprocess execution detected" subprocess.run(f'ls {cmd}', shell=True)\n"Fix: Build commands from fixed arguments, never from interpolated strings; prefer an API client over shelling out.
AST05
MEDIUM
Python subprocess execution detectedmcp_patch/checks.py:137 · Python subprocess execution detectedfix="Use subprocess.run([cmd, shlex.quote(arg)]) without shell=True",Fix: Build commands from fixed arguments, never from interpolated strings; prefer an API client over shelling out.
AST05
MEDIUM
Python subprocess execution detectedtests/fixtures/vulnerable_server.py:107 · Python subprocess execution detectedreturn subprocess.run(cmd, shell=True).stdoutFix: Build commands from fixed arguments, never from interpolated strings; prefer an API client over shelling out.
AST05

Cost to the agent

Instructions loaded
≈46 tok
1 file · 11 in bundle

Tokens estimated at four characters each. Skills load their instruction text when triggered; the figure is what that costs.

Known vulnerabilities

No advisories in OSV for mcp-patch@0.1.0 as of 6d ago. This is the package itself, not its dependencies.

What would make this Verified

21 points to 80 · weights: behavior 45%, static 25%, prompt 15%, publisher 15%
  1. OS command execution function call detected≈ +9 on the totalBuild commands from fixed arguments; do not interpolate untrusted strings into a shell.
  2. Unclaimed publisher≈ +8 on the totalClaim 0-co: a verified publisher gets +50 on publisher trust. It is free and usually instant with GitHub sign-in.
  3. Python subprocess execution detected≈ +2 on the totalBuild commands from fixed arguments, never from interpolated strings; prefer an API client over shelling out.
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