Skills/PyPI/mcpolish

mcpolish@0.1.1

VERIFIED· not started

Publisher claims: "Fast static linter for MCP servers. Catches vague, colliding, or misleading tool descriptions before agents pick the wrong tool." Observed in sandbox: no network, touches nothing outside the project, writes no memory.

Registry PyPI (MCP server)Publisher vtensor · publishing for 182 daysInstalls 14Last detonated 3d ago
$claude mcp add mcpolish -- uvx mcpolish
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Coverage

Not started: dependency install failed; the server itself was not observed.
Tested
the dependency install step · every file read, file written and host contacted by what ran
Not tested
server startup · the tool list · tool behavior

What this means for the label: Verified here covers what ran. The server's tools were not exercised with a real credential, so nothing about their behavior is asserted; the credential summary below says what to do with that.

Before you give it your token

It will ask for
ANTHROPIC_API_KEYOPENAI_API_KEYConfiguration, not credentials: MCPOLISH_LOG, OLLAMA_HOST
Where it talks to
mcpolish.dev (its own)Also schemastore.org — not the publisher's domain; check what for before connecting.
What the honeypot saw
no credential files read · no network
What we could not test
server startup · the tool list · tool behavior

Connect it with a scoped credential, under the guard, and read the third-party hosts first. The code names schemastore.org as well as its own vendor. The guard injects ANTHROPIC_API_KEY, OPENAI_API_KEY only into requests to mcpolish.dev (and its subdomains) and refuses the rest.

$vet-skills run --secrets ANTHROPIC_API_KEY=mcpolish.dev,OPENAI_API_KEY=mcpolish.dev -- uvx mcpolish

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 ran it in the KillerSkills honeypot sandbox (2 scenarios; not started: dependency install failed; the server itself was not observed) on 2026-11-11 and scored it 83/100 (Verified). In what ran, nothing we could detect went wrong: no undeclared network egress, no credential reads, no persistent instruction writes. What it does with a real credential was not observed; the static findings and the publisher carry the rest of the score. Summary: no network, touches nothing outside the project, writes no memory.

Behavior trace

Honeypot run · 0 s · 2 scenarios · 0 deviations
t+CategoryObserved action
0.0sprocessno install scripts in bundle
0.1sprocessdependency install exit 1 ·
0.1sclaimednot started: dependency install failed (exit 1); the server itself was not observed
0.1sprocessscript backend runs setup only
0.1sprocessno install scripts to re-run

Static findings

HIGH
Bidirectional text override characters detectedsrc/mcpolish/rules/security/MP040_hidden_prompt_injection.py:22 · Bidirectional text override characters detected — may hide content directionr"⁦-⁩" # isolate controlsFix: Keep SKILL.md to visible, descriptive text. Remove comments and encoded text that address the agent.
AST07
HIGH
Hidden zero-width characters detectedsrc/mcpolish/rules/security/MP040_hidden_prompt_injection.py:23 · Hidden zero-width characters detected — may conceal contentr"" # BOMFix: Keep SKILL.md to visible, descriptive text. Remove comments and encoded text that address the agent.
AST07
HIGH
Bidirectional text override characters detectedsrc/mcpolish/rules/security/MP040_hidden_prompt_injection.py:21 · Bidirectional text override characters detected — may hide content directionr"‪-‮" # LRE, RLE, PDF, LRO, RLOFix: Keep SKILL.md to visible, descriptive text. Remove comments and encoded text that address the agent.
AST07
HIGH
Hidden zero-width characters detectedsrc/mcpolish/rules/security/MP040_hidden_prompt_injection.py:20 · Hidden zero-width characters detected — may conceal contentr"​-‏" # zero-width + bidi marksFix: Keep SKILL.md to visible, descriptive text. Remove comments and encoded text that address the agent.
AST07

Cost to the agent

Instructions loaded
≈66 tok
1 file · 81 in bundle
Tool list per prompt
≈0 tok
0 tools · 0 per tool
Handshake
no reply
launch to tools/list, stdio
Undocumented tools
0
description under 20 chars · avg 0

Tokens estimated at four characters each. The tool list is re-read by the agent on every turn, so it is the number to compare between servers that do the same job: ranked across the index.

Known vulnerabilities

No advisories in OSV for mcpolish@0.1.1 as of 3d ago. This is the package itself, not its dependencies.

mcpolish@0.1.1 safety verdict: Verified (not started) — KillerSkills