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Goatcade

by goatcade.com · remote · no sign-in to list tools · v2.0.0 · published by com.goatcade

Real, free browser games that open in the chat: city builder, racer, horde shooter, deckbuilder.

Changes · 1
CompareRegistry entry

2 tools: 1 change things and 1 only read.

Scanned Oct 21, 2026

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

claude mcp add --transport http arcade https://goatcade.com/mcp

Findings

Matches of fixed checks, with the text they matched.

1 warn
  • Warnopen_goatcade

    The server marks "open_goatcade" read-only (readOnlyHint: true), and its own name, description or input give the class "write".

    Matched text

    annotations: {"readOnlyHint":true,"destructiveHint":false,"openWorldHint":false}; The name "open_goatcade" says "open": a word for a change.

    What this check looks for

Tools

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

2 tools

Changes things 1Claude Code: ask
  • open_goatcadeShow the Goatcade arcade in the chat: real, free browser games (Rad Rush, atomic-age horde survival; Last Siren, atomic-age survival city builder; Scrap Fury, wasteland combat race…1 finding

    Why it is in this group

    • The name "open_goatcade" says "open": a word for a change.
    • The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.

    Findings

    • Warn

      The server marks "open_goatcade" read-only (readOnlyHint: true), and its own name, description or input give the class "write".

      Matched text

      annotations: {"readOnlyHint":true,"destructiveHint":false,"openWorldHint":false}; The name "open_goatcade" says "open": a word for a change.

      What this check looks for
    Description, as the server wrote it
    Show the Goatcade arcade in the chat: real, free browser games (Rad Rush, atomic-age horde survival; Last Siren, atomic-age survival city builder; Scrap Fury, wasteland combat racer; Nuke Deck, atomic-age roguelike deckbuilder) with a Play button for each. Use this whenever the user wants to play a game, is bored, or asks for Goatcade. Pass `game` to put one game up front; leave it out to show the whole arcade.

    Annotations the server declares

    • title: Open Goatcade
    • readOnlyHint: true
    • openWorldHint: false
    • destructiveHint: false
Only reads 1Claude Code: allow
  • list_gamesList every Goatcade game with a short description, to help recommend one.No findings

    Why it is in this group

    • The name "list_games" says "list": a word for reading.
    Description, as the server wrote it
    List every Goatcade game with a short description, to help recommend one. Does not show the arcade.

    Annotations the server declares

    • title: List Goatcade games
    • readOnlyHint: true
    • openWorldHint: false
    • destructiveHint: false

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.

Exfil surface

Which tools read private data, which read text someone else can write, and which can send data out. One of each is a path a prompt injection can use.

No private-data, untrusted-input, outbound path in this server alone: no tool is tagged private-data or untrusted-input or outbound.

Reads private data0
Reads files, mail, messages, databases, secrets, calendars or repositories.
Reads text others write0
Brings in text someone else can write: web pages, inbound email, messages, issues and comments.
Can send data out0
Can carry data to people or systems: it sends, posts or publishes, or takes a recipient, channel or URL.

Other servers in the same agent add their own tools to these paths. Audit your whole setup to see them together.

Install

Pinned to version 2.0.0. Values in angle brackets are yours to fill in.

claude mcp add --transport http arcade https://goatcade.com/mcp

Run in a terminal.

Claude Code permissions

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

.claude/settings.json
{
  "permissions": {
    "allow": [
      "mcp__arcade__list_games"
    ],
    "ask": [
      "mcp__arcade__open_goatcade"
    ],
    "deny": []
  }
}

Tools that only read are allowed, tools that change things ask first, tools that delete or cancel are denied. A read that can send data out (it takes a URL, say) asks first too. It assumes the server is installed as arcade. Review it before you use it.