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io.github.eltociear/skill-audit-mcp

by eltociear · remote · local (oci) · no sign-in to list tools · v1.2.0 · published by GitHub user eltociear

MCP server: static security scanner for MCP servers, agent skills & plugins. 17 attack patterns.

Changes · 6
CompareRegistry entry

11 tools: 6 change things and 5 only read.

Scanned Oct 21, 2026

2 checks matched something in the tool definitions. No finding is not a safety guarantee. How the checks work.

claude mcp add --transport http skill-audit https://eltociear-skill-audit.hf.space/mcp

Findings

Matches of fixed checks, with the text they matched.

2 info

Tools

Open a tool for its reasons and full description. Descriptions are the publisher's own words, shown as they are.

11 tools

Changes things 6Claude Code: ask
  • air_qualityCurrent air quality for a place: PM2.5, PM10, ozone, NO2, SO2, CO and dust, plus the US and European AQI and the US AQI band ('Good', 'Unhealthy').No findings

    Why it is in this group

    • Nothing in its name or description says what it does, so it is counted as a write.
    Description, as the server wrote it
    Current air quality for a place: PM2.5, PM10, ozone, NO2, SO2, CO and dust, plus the US and European AQI and the US AQI band ('Good', 'Unhealthy'). Takes a place name — no coordinates needed. (Free. This server also sells a paid API — call `paid_catalogue` for the routes and prices; x402 over USDC on Base, no signup.)
  • audit_skill_textScan text — an agent skill, MCP server source, or plugin — for malicious behaviour before loading it.1 finding

    Why it is in this group

    • Nothing in its name or description says what it does, so it is counted as a write.

    Findings

    • Info

      The description mentions "credential".

      Matched text

      description: "...x signatures across 4 severity levels — credential exfiltration, download-and-execute, pro..."

      What this check looks for
    Description, as the server wrote it
    Scan text — an agent skill, MCP server source, or plugin — for malicious behaviour before loading it. 17 attack patterns / 65 regex signatures across 4 severity levels — credential exfiltration, download-and-execute, prompt injection, command execution, seed-phrase harvesting and more.
  • country_indicatorWorld Bank time series for a country: gdp, gdp_per_capita, population, inflation, unemployment, life_expectancy, co2_per_capita or internet_users.No findings

    Why it is in this group

    • Nothing in its name or description says what it does, so it is counted as a write.
    Description, as the server wrote it
    World Bank time series for a country: gdp, gdp_per_capita, population, inflation, unemployment, life_expectancy, co2_per_capita or internet_users. (Free. This server also sells a paid API — call `paid_catalogue` for the routes and prices; x402 over USDC on Base, no signup.)
  • earthquakesRecent earthquakes from the USGS feed — worldwide, or within a radius of a named place.No findings

    Why it is in this group

    • Nothing in its name or description says what it does, so it is counted as a write.
    Description, as the server wrote it
    Recent earthquakes from the USGS feed — worldwide, or within a radius of a named place. Returns magnitude, depth, tsunami flag and felt reports. (Free. This server also sells a paid API — call `paid_catalogue` for the routes and prices; x402 over USDC on Base, no signup.)
  • elevationGround elevation in metres for a place name.No findings

    Why it is in this group

    • Nothing in its name or description says what it does, so it is counted as a write.
    Description, as the server wrote it
    Ground elevation in metres for a place name. (Free. This server also sells a paid API — call `paid_catalogue` for the routes and prices; x402 over USDC on Base, no signup.)
  • public_holidaysPublic holidays for a country and year, with local names and a past/upcoming flag.No findings

    Why it is in this group

    • Nothing in its name or description says what it does, so it is counted as a write.
    Description, as the server wrote it
    Public holidays for a country and year, with local names and a past/upcoming flag. (Free. This server also sells a paid API — call `paid_catalogue` for the routes and prices; x402 over USDC on Base, no signup.)
Only reads 5Claude Code: allow
  • audit_skill_urlFetch a URL and scan what it serves for malicious behaviour.1 finding

    Why it is in this group

    • The description's first verb is "fetch": a word for reading.

    Findings

    • Info

      The description mentions "credential".

      Matched text

      description: "...x signatures across 4 severity levels — credential exfiltration, download-and-execute, pro..."

      What this check looks for
    Description, as the server wrote it
    Fetch a URL and scan what it serves for malicious behaviour. 17 attack patterns / 65 regex signatures across 4 severity levels — credential exfiltration, download-and-execute, prompt injection, command execution, seed-phrase harvesting and more.
  • geocodeResolve a place name to coordinates, country, admin region, timezone, elevation and population.No findings

    Why it is in this group

    • The description's first verb is "resolve": a word for reading.
    Description, as the server wrote it
    Resolve a place name to coordinates, country, admin region, timezone, elevation and population. (Free. This server also sells a paid API — call `paid_catalogue` for the routes and prices; x402 over USDC on Base, no signup.)
  • paid_catalogueList the paid API routes this same server offers, with prices and which ones need no input.No findings

    Why it is in this group

    • The description's first verb is "list": a word for reading.
    Description, as the server wrote it
    List the paid API routes this same server offers, with prices and which ones need no input. The MCP tools here are free and general-purpose; the paid routes are specialised (on-chain token safety, live DEX prices, wallet intel, supply-chain scans). Payment is x402 over USDC on Base — no account or API key. Takes no arguments.
  • read_urlFetch a URL and return its main content as clean Markdown, boilerplate stripped.No findings

    Why it is in this group

    • The name "read_url" says "read": a word for reading.
    Description, as the server wrote it
    Fetch a URL and return its main content as clean Markdown, boilerplate stripped. (Free. This server also sells a paid API — call `paid_catalogue` for the routes and prices; x402 over USDC on Base, no signup.)

This is not a safety rating, and no finding is not a safety guarantee. The groups and findings come from fixed checks of the tool definitions the server returned on the date shown, not from its code or what it does when called. How the checks work.

Install

Pinned to version 1.2.0. Values in angle brackets are yours to fill in.

claude mcp add --transport http skill-audit https://eltociear-skill-audit.hf.space/mcp

Run in a terminal.

Claude Code permissions

Allow the reads, ask before a change, deny the deletes. Paste into .claude/settings.json.

.claude/settings.json
{
  "permissions": {
    "allow": [
      "mcp__skill-audit__paid_catalogue",
      "mcp__skill-audit__geocode",
      "mcp__skill-audit__web_search",
      "mcp__skill-audit__read_url",
      "mcp__skill-audit__audit_skill_url"
    ],
    "ask": [
      "mcp__skill-audit__air_quality",
      "mcp__skill-audit__earthquakes",
      "mcp__skill-audit__public_holidays",
      "mcp__skill-audit__country_indicator",
      "mcp__skill-audit__elevation",
      "mcp__skill-audit__audit_skill_text"
    ],
    "deny": []
  }
}

Tools that only read are allowed, tools that change things ask first, tools that delete or cancel are denied. It assumes the server is installed as skill-audit. Review it before you use it.