Skills/PyPI/holster-mcp

holster-mcp@0.1.1

VERIFIED

Publisher claims: "MCP server for Holster, a local-first secret vault with audit logs and agent tooling." Observed in sandbox: no network, touches nothing outside the project, writes no memory.

Registry PyPI (MCP server)Publisher nauta-ai · joined 2 days agoInstalls 155Last detonated 39 h ago
$claude mcp add holster-mcp -- uvx holster-mcp
WatchReport an issue

Is [email protected] safe to install?

KillerSkills ran it in the KillerSkills honeypot sandbox (2 scenarios) on 2026-11-01 and scored it 83/100 (Verified). It did what it claims and nothing else we could detect: no undeclared network egress, no credential reads, no persistent instruction writes. Summary: no network, touches nothing outside the project, writes no memory.

Behavior trace

Honeypot run · 1 s · 2 scenarios · 0 deviations
t+CategoryObserved action
0.1sprocessexited 1: ModuleNotFoundError: No module named 'setuptools'
0.6sprocessdependency install exit 1
0.6sprocessexec /usr/bin/timeout
0.6sprocessexec .venv/bin/holster-mcp
0.6sprocessexited 127: timeout: failed to run command '.venv/bin/holster-mcp': No such file or directory
0.6sclaimedno tools/list reply (exit 127)
0.6sprocessscript backend runs setup only

Static findings

MEDIUM
Python subprocess execution detectedsrc/holster_mcp/util/doctor_shim.py:54 · Python subprocess execution detectedFix: Build commands from fixed arguments, never from interpolated strings; prefer an API client over shelling out.
AST05
MEDIUM
Access to sensitive file pathstests/test_free_tools.py:66 · Access to sensitive file paths — SSH keys, AWS credentials, env files, or system filesFix: Stop enumerating or reading credential locations; take secrets from a declared environment variable the user sets on purpose.
AST05
MEDIUM
Python subprocess execution detectedsrc/holster_mcp/util/cli_shim.py:124 · Python subprocess execution detectedFix: Build commands from fixed arguments, never from interpolated strings; prefer an API client over shelling out.
AST05
MEDIUM
Access to sensitive file pathstests/test_free_tools.py:77 · Access to sensitive file paths — SSH keys, AWS credentials, env files, or system filesFix: Stop enumerating or reading credential locations; take secrets from a declared environment variable the user sets on purpose.
AST05
MEDIUM
Access to sensitive file pathstests/test_free_tools.py:69 · Access to sensitive file paths — SSH keys, AWS credentials, env files, or system filesFix: Stop enumerating or reading credential locations; take secrets from a declared environment variable the user sets on purpose.
AST05
MEDIUM
Access to sensitive file pathstests/test_free_tools.py:67 · Access to sensitive file paths — SSH keys, AWS credentials, env files, or system filesFix: Stop enumerating or reading credential locations; take secrets from a declared environment variable the user sets on purpose.
AST05
MEDIUM
Access to sensitive file pathstests/test_free_tools.py:78 · Access to sensitive file paths — SSH keys, AWS credentials, env files, or system filesFix: Stop enumerating or reading credential locations; take secrets from a declared environment variable the user sets on purpose.
AST05