Skills/PyPI/mcp-config-guard

mcp-config-guard@2.0.0

CAUTION· static only

Publisher claims: "Zero-dependency security linter for MCP (Model Context Protocol) configurations" Observed in sandbox: static analysis only — behavior not yet observed.

Registry PyPI (MCP server)Publisher kgt24k · publishing for 257 daysInstalls 16Last detonated 7d ago
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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.

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nothing has run yet
What we could not test
everything: the server has not run yet

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Is [email protected] safe to install?

KillerSkills analysed it statically (a sandbox run is pending) on 2026-11-07 and scored it 53/100 (Caution). It is not known to be malicious, but it has behaviour or code a security policy should decide on before install. Notable findings: Access to sensitive file paths; Access to sensitive file paths; Access to sensitive file paths. 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

HIGH
Access to sensitive file pathssrc/config_guard/__init__.py:21 · Access to sensitive file paths — SSH keys, AWS credentials, env files, or system files9. Sensitive paths — access to .ssh, .aws, .env directories [ASI06]Fix: Stop enumerating or reading credential locations; take secrets from a declared environment variable the user sets on purpose.
AST05
HIGH
Access to sensitive file pathssrc/config_guard/__init__.py:245 · Access to sensitive file paths — SSH keys, AWS credentials, env files, or system files"env-var-leak": "## Environment Variable Leak\n\nSensitive environment variables should never have hardcoded values in config files.\n\n### Remediation\n- Use `${VAR_NAME}` references instead of literFix: Stop enumerating or reading credential locations; take secrets from a declared environment variable the user sets on purpose.
AST05
MEDIUM
npx invocation of non-well-known packagesrc/config_guard/__init__.py:14 · npx invocation of non-well-known package — may execute untrusted code2. Rug pulls — npx @latest auto-update vectors [ASI07]Fix: Pin versions and sources; vendor anything fetched at install time.
AST06
HIGH
Access to sensitive file pathssrc/config_guard/__init__.py:267 · Access to sensitive file paths — SSH keys, AWS credentials, env files, or system files"hardcoded-secret": "## Hardcoded Secret\n\nSensitive environment variable appears hardcoded.\n\n### Remediation\n- Use ${ENV_VAR} references instead of literal values\n- Store secrets in vault (op://Fix: Stop enumerating or reading credential locations; take secrets from a declared environment variable the user sets on purpose.
AST05
MEDIUM
npx invocation of non-well-known packagesrc/config_guard/__init__.py:750 · npx invocation of non-well-known package — may execute untrusted code# Check 2: Rug Pull Risk (npx @latest)Fix: Pin versions and sources; vendor anything fetched at install time.
AST06
HIGH
Access to sensitive file pathssrc/config_guard/__init__.py:243 · Access to sensitive file paths — SSH keys, AWS credentials, env files, or system files"sensitive-path": "## Sensitive Path Access\n\nMCP servers should not have access to directories containing credentials or keys.\n\n### Remediation\n- Restrict server access to project directories onlFix: Stop enumerating or reading credential locations; take secrets from a declared environment variable the user sets on purpose.
AST05
HIGH
Access to sensitive file pathssrc/config_guard/__init__.py:287 · Access to sensitive file paths — SSH keys, AWS credentials, env files, or system files"db-connection-leak": "## Database Connection Exposure\n\nDatabase connection string exposed in MCP config.\n\n### Remediation\n- Move DB connection strings to .env or vault\n- Reference via ${VAR} inFix: Stop enumerating or reading credential locations; take secrets from a declared environment variable the user sets on purpose.
AST05
HIGH
Auto-update or dynamic fetch configurationsrc/config_guard/__init__.py:6 · Auto-update or dynamic fetch configuration — agent may load new code at runtimeCatches network exposure, secret leakage, auto-update risks, privilege escalation,Fix: Pin versions and sources; vendor anything fetched at install time.
AST06
HIGH
Auto-update or dynamic fetch configurationsrc/config_guard/__init__.py:236 · Auto-update or dynamic fetch configuration — agent may load new code at runtime"rug-pull": "## Rug Pull Risk\n\nUsing `@latest` or auto-update patterns means the code running on your machine can change without notice.\n\n### Remediation\n- Pin packages to exact versions (e.g., `Fix: Pin versions and sources; vendor anything fetched at install time.
AST06
MEDIUM
npx invocation of non-well-known packagesrc/config_guard/__init__.py:757 · npx invocation of non-well-known package — may execute untrusted code"message": "Uses npx with @latest — code changes on every run",Fix: Pin versions and sources; vendor anything fetched at install time.
AST06
MEDIUM
npx invocation of non-well-known packagetests/test_package.py:235 · npx invocation of non-well-known package — may execute untrusted code"""Pinned npx packages should not trigger."""Fix: Pin versions and sources; vendor anything fetched at install time.
AST06
MEDIUM
MCP server using network transport (SSE/HTTP)tests/test_package.py:161 · MCP server using network transport (SSE/HTTP) — data sent over networkconfig = {"mcpServers": {"old-server": {"command": "node", "args": ["server.js", "--sse"]}}}Fix: Namespace tool names and keep tool descriptions literal; no instructions to the agent inside them.
AST04
MEDIUM
MCP server using network transport (SSE/HTTP)tests/test_package.py:174 · MCP server using network transport (SSE/HTTP) — data sent over networkconfig = {"mcpServers": {"old": {"command": "node", "args": ["server.js"], "env": {"MCP_TRANSPORT": "sse"}}}}Fix: Namespace tool names and keep tool descriptions literal; no instructions to the agent inside them.
AST04
MEDIUM
npx invocation of non-well-known packagesrc/config_guard/__init__.py:1046 · npx invocation of non-well-known package — may execute untrusted code# Also check the command itself for npx without version pinFix: Pin versions and sources; vendor anything fetched at install time.
AST06
MEDIUM
npx invocation of non-well-known packagetests/test_package.py:229 · npx invocation of non-well-known package — may execute untrusted code"""Detect unpinned npx packages without version."""Fix: Pin versions and sources; vendor anything fetched at install time.
AST06
MEDIUM
Destructive file system command detectedtests/test_package.py:561 · Destructive file system command detected"""Tests for --format / -f flag."""Fix: Build commands from fixed arguments; do not interpolate untrusted strings into a shell.
AST05
MEDIUM
npx invocation of non-well-known packagesrc/config_guard/__init__.py:765 · npx invocation of non-well-known package — may execute untrusted code"message": "Uses npx -y — auto-confirms package install",Fix: Pin versions and sources; vendor anything fetched at install time.
AST06
MEDIUM
MCP server using network transport (SSE/HTTP)tests/test_package.py:168 · MCP server using network transport (SSE/HTTP) — data sent over networkconfig = {"mcpServers": {"old": {"command": "node", "args": ["server.js", "--transport=sse"]}}}Fix: Namespace tool names and keep tool descriptions literal; no instructions to the agent inside them.
AST04
MEDIUM
MCP server using network transport (SSE/HTTP)tests/test_package.py:180 · MCP server using network transport (SSE/HTTP) — data sent over networkconfig = {"mcpServers": {"new": {"command": "node", "args": ["server.js", "--transport=streamable-http"]}}}Fix: Namespace tool names and keep tool descriptions literal; no instructions to the agent inside them.
AST04

Cost to the agent

Instructions loaded
≈58 tok
1 file · 13 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-config-guard@2.0.0 as of 7d ago. This is the package itself, not its dependencies.

What would make this Verified

27 points to 80 · weights: behavior 45%, static 25%, prompt 15%, publisher 15%
  1. Unclaimed publisher≈ +8 on the totalClaim kgt24k: a verified publisher gets +50 on publisher trust. It is free and usually instant with GitHub sign-in.
  2. Access to sensitive file paths≈ +4 on the totalStop enumerating or reading credential locations; take secrets from a declared environment variable the user sets on purpose.
  3. Auto-update or dynamic fetch configuration≈ +4 on the totalPin versions and sources; vendor anything fetched at install time.
  4. npx invocation of non-well-known package≈ +2 on the totalPin versions and sources; vendor anything fetched at install time.
  5. MCP server using network transport (SSE/HTTP)≈ +2 on the totalNamespace tool names and keep tool descriptions literal; no instructions to the agent inside them.
  6. Destructive file system command detected≈ +2 on the totalBuild commands from fixed arguments; do not interpolate untrusted strings into a shell.
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