Scrub MCP Server
scrub-mcp
PyPI
v0.5.0
Published by an unidentified publisher — no publish provenance and no public repository, so the publisher could not be verified and the source cannot be independently located.
The grade answers one question — how safe is this server for you to adopt — so it is computed in two auditable stages. Nothing below is an opinion or an LLM's guess; every line is a real term the deterministic engine applied, and the same input always yields the same number.
1. Threat score — 100 − 0 = 100. What the published surface and source actually contain:
The deterministic scan raised no scored threat in the surface it inspected — the threat score stayed at 100. Capability observations and advisory notes are recorded but never lower it.
2. Client adoption risk — 100 − 8 = 92. Three small, subtract-only factors that reflect your risk in adopting it — a clean scan proves less on a powerful, unverified or barely-inspectable package, so the grade says so plainly:
| Points | Adoption-risk factor |
|---|---|
| −6 | capability blast radius (high) — client exposure if the model is manipulated |
| −2 | publisher verification (unlinked) — no provenance/repo link, but the shipped source was fully read |
Capability observations and info notes are shown under Findings but never scored.
Open any row's finding below for the file, line and evidence behind a deduction.
Findings 8
high Shell/command execution in server code (src/scrub_mcp/cli.py)MTC-SRC-002
In the server's implementation (`src/scrub_mcp/cli.py:599`): Spawning a shell/process is command-execution capability; with unsanitized tool input it is command injection / RCE. This is read from the code itself — not from the tool description — so a poisoned server cannot hide it behind honest-looking metadata.
Evidence: try: subprocess.run(["git", "checkout", "-b", branch], check=True) if not quiet:
Fix: Review this call path: confirm it never receives unsanitized tool input, constrain it, or remove it. Treat a server whose code reaches these sinks as high-capability regardless of what its tools claim.
Location: server src/scrub_mcp/cli.py
high Shell/command execution in server code (src/scrub_mcp/mcp/server.py)MTC-SRC-002
In the server's implementation (`src/scrub_mcp/mcp/server.py:1049`): Spawning a shell/process is command-execution capability; with unsanitized tool input it is command injection / RCE. This is read from the code itself — not from the tool description — so a poisoned server cannot hide it behind honest-looking metadata.
Evidence: proc = subprocess.run(rg_cmd, capture_output=True, text=True, timeout=15) for line
Fix: Review this call path: confirm it never receives unsanitized tool input, constrain it, or remove it. Treat a server whose code reaches these sinks as high-capability regardless of what its tools claim.
Location: server src/scrub_mcp/mcp/server.py
high Shell/command execution in server code (src/scrub_mcp/tools/diff.py)MTC-SRC-002
In the server's implementation (`src/scrub_mcp/tools/diff.py:113`): Spawning a shell/process is command-execution capability; with unsanitized tool input it is command injection / RCE. This is read from the code itself — not from the tool description — so a poisoned server cannot hide it behind honest-looking metadata.
Evidence: . """ result = subprocess.run( ["git", "diff", "-M", since], cwd=repo_path, capture_out
Fix: Review this call path: confirm it never receives unsanitized tool input, constrain it, or remove it. Treat a server whose code reaches these sinks as high-capability regardless of what its tools claim.
Location: server src/scrub_mcp/tools/diff.py
high Shell/command execution in server code (src/scrub_mcp/tools/imports.py)MTC-SRC-002
In the server's implementation (`src/scrub_mcp/tools/imports.py:97`): Spawning a shell/process is command-execution capability; with unsanitized tool input it is command injection / RCE. This is read from the code itself — not from the tool description — so a poisoned server cannot hide it behind honest-looking metadata.
Evidence: rt (I) result = subprocess.run( [ "ruff", "check", "
Fix: Review this call path: confirm it never receives unsanitized tool input, constrain it, or remove it. Treat a server whose code reaches these sinks as high-capability regardless of what its tools claim.
Location: server src/scrub_mcp/tools/imports.py
high Shell/command execution in server code (src/scrub_mcp/tools/linter.py)MTC-SRC-002
In the server's implementation (`src/scrub_mcp/tools/linter.py:37`): Spawning a shell/process is command-execution capability; with unsanitized tool input it is command injection / RCE. This is read from the code itself — not from the tool description — so a poisoned server cannot hide it behind honest-looking metadata.
Evidence: check_result = subprocess.run( ["ruff", "check", "--output-format", "json"] + common_flags + [str(t
Fix: Review this call path: confirm it never receives unsanitized tool input, constrain it, or remove it. Treat a server whose code reaches these sinks as high-capability regardless of what its tools claim.
Location: server src/scrub_mcp/tools/linter.py
high Shell/command execution in server code (src/scrub_mcp/tools/sbom.py)MTC-SRC-002
In the server's implementation (`src/scrub_mcp/tools/sbom.py:42`): Spawning a shell/process is command-execution capability; with unsanitized tool input it is command injection / RCE. This is read from the code itself — not from the tool description — so a poisoned server cannot hide it behind honest-looking metadata.
Evidence: try: result = subprocess.run( [sys.executable, "-m", "pip", "freeze", "--all"], captur
Fix: Review this call path: confirm it never receives unsanitized tool input, constrain it, or remove it. Treat a server whose code reaches these sinks as high-capability regardless of what its tools claim.
Location: server src/scrub_mcp/tools/sbom.py
high Shell/command execution in server code (src/scrub_mcp/tools/security.py)MTC-SRC-002
In the server's implementation (`src/scrub_mcp/tools/security.py:63`): Spawning a shell/process is command-execution capability; with unsanitized tool input it is command injection / RCE. This is read from the code itself — not from the tool description — so a poisoned server cannot hide it behind honest-looking metadata.
Evidence: ath)) result = subprocess.run( cmd, capture_output=True, text=True,
Fix: Review this call path: confirm it never receives unsanitized tool input, constrain it, or remove it. Treat a server whose code reaches these sinks as high-capability regardless of what its tools claim.
Location: server src/scrub_mcp/tools/security.py
high Shell/command execution in server code (src/scrub_mcp/utils.py)MTC-SRC-002
In the server's implementation (`src/scrub_mcp/utils.py:89`): Spawning a shell/process is command-execution capability; with unsanitized tool input it is command injection / RCE. This is read from the code itself — not from the tool description — so a poisoned server cannot hide it behind honest-looking metadata.
Evidence: name) result = subprocess.run( [ "pydocstyle", "--convention=google
Fix: Review this call path: confirm it never receives unsanitized tool input, constrain it, or remove it. Treat a server whose code reaches these sinks as high-capability regardless of what its tools claim.
Location: server src/scrub_mcp/utils.py
Tools 22
Each tool and what it can reach — statically extracted from the published source.
read_filesreads sensitive dataadd_commentsno sensitive capabilityanalyze_complexityno sensitive capabilityannotate_typesno sensitive capabilityexplore_architectureno sensitive capabilityfind_dead_codeno sensitive capabilityfind_symbolsno sensitive capabilitygenerate_docstringsno sensitive capabilitygenerate_sbomno sensitive capabilitygenerate_testsno sensitive capability
Show 12 more tools ↓
grep_multino sensitive capabilityhygiene_batchno sensitive capabilityhygiene_fullno sensitive capabilityhygiene_incrementalno sensitive capabilitylint_fileno sensitive capabilityoptimize_importsno sensitive capabilityrun_testsno sensitive capabilityscan_vulnerabilitiesno sensitive capabilitysecurity_remediateno sensitive capabilitysecurity_scanno sensitive capabilitysuggest_refactoringno sensitive capabilitysuggest_simplificationsno sensitive capability
What this scan could not see
- Tools were statically extracted from the published source (22 recovered), not enumerated from a running server. Tool-poisoning, Unicode-smuggling, capability and toxic-flow analysis ran on this inferred surface, but a mis-parsed registration could be missed or mis-attributed, so tool-derived findings are capped below “confirmed”. To grade the real runtime surface, scan the running server: --command "npx -y <package>".
Versions 1
Scan history per published version. The engine is deterministic — the same version always yields the same score, so a changed score means the package itself changed.
| Version | Score | Findings | Engine | Scanned |
|---|---|---|---|---|
v0.5.0 latest |
A 92/100 | 8 | 1.9.0 | 2026-07-23 |
Embed this score
Show this server's live Trust Score in your README, docs or website. The badge is served straight from the registry and updates automatically after every rescan — no API key needed. It links back to this page, so anyone who sees the grade can also read the findings behind it instead of taking a number on faith.
Verify this score yourself
The score above is reproducible: the same package version always yields the same result. Run it locally or over the free API — no account, no LLM, fully deterministic.
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