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AlpiX

by alpix.alpic.ai · remote · no sign-in to list tools · v0.0.1 · published by ai.alpic.alpix

A pixel wars MCP server: ask your agent to collaboratively draw pixels in a huge square

Deletes · 1Changes · 1
CompareRegistry entry

3 tools: 1 can delete or cancel things, 1 change things and 1 only read.

Scanned Oct 21, 2026

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

claude mcp add --transport http alpix https://alpix.alpic.ai

Findings

Matches of fixed checks, with the text they matched.

1 warn3 info
  • Warncanvas

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

    Matched text

    annotations: {"readOnlyHint":true,"destructiveHint":false,"openWorldHint":true}; The description's first verb is "open": a word for a change.

    What this check looks for
  • Infocanvas

    The input schema at properties.user_intent.description mentions "credentials".

    Matched text

    inputSchema.properties.user_intent.description: "...of birth, ID numbers, payment details, credentials, IP addresses, and device identifiers)..."

    What this check looks for
  • Infostamp-grid

    The input schema at properties.user_intent.description mentions "credentials".

    Matched text

    inputSchema.properties.user_intent.description: "...of birth, ID numbers, payment details, credentials, IP addresses, and device identifiers)..."

    What this check looks for
  • Infoget-leaderboard

    The input schema at properties.user_intent.description mentions "credentials".

    Matched text

    inputSchema.properties.user_intent.description: "...of birth, ID numbers, payment details, credentials, IP addresses, and device identifiers)..."

    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.

3 tools

Deletes or cancels 1Claude Code: deny
  • stamp-gridDraw a rectangular sprite on the shared 256x256 canvas by submitting an ASCII grid — the natural way to draw pixel art.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.
    • The server marks it destructive (destructiveHint: true).

    Findings

    • Info

      The input schema at properties.user_intent.description mentions "credentials".

      Matched text

      inputSchema.properties.user_intent.description: "...of birth, ID numbers, payment details, credentials, IP addresses, and device identifiers)..."

      What this check looks for
    Description, as the server wrote it
    Draw a rectangular sprite on the shared 256x256 canvas by submitting an ASCII grid — the natural way to draw pixel art. Each line of the grid is one row of pixels; each character is one pixel. The grid's width and height set the drawing size. 'legend' maps single characters to palette color names. Characters NOT in the legend are transparent (existing canvas pixel under them is left untouched). The top-left of the grid is placed at (x, y) on the canvas. Coordinates: (0,0)=top-left, (255,255)=bottom-right. Available colors (32): dark_red, red, orange_red, orange, yellow, pale_yellow, dark_green, green, light_green, dark_teal, teal, light_teal, dark_blue, blue, light_blue, indigo, periwinkle, lavender, dark_purple, purple, pink_purple, magenta, pink, light_pink, dark_brown, brown, beige, black, dark_gray, gray, light_gray, white. Spatial structure is preserved in the grid string, so the drawing comes out as it looks. Max 4096 placed (non-transparent) pixels per call — for larger drawings, split into several adjacent stamp-grid calls. Example — a red plus sign with a yellow center at (10, 20): x=10, y=20 legend={"R": "red", "Y": "yellow"} grid=".R.\nRYR\n.R." (the '.' characters aren't in the legend, so those pixels are left as-is)If you ever need to draw a new version of the same shape, do not send a blank grid. Instead just draw above the existing shape. Always pass user_name (read from the canvas widget — the name the user picked) and model_name (your own model identifier, lowercase hyphen-separated, e.g. 'gpt-4o', 'claude-opus-4-7'). These are recorded so other users can see who drew it.

    Annotations the server declares

    • title: Stamp pixel art
    • readOnlyHint: false
    • openWorldHint: true
    • destructiveHint: true
Changes things 1Claude Code: ask
  • canvasOpen the live shared pixel canvas.2 findings

    Why it is in this group

    • The description's first verb is "open": a word for a change.
    • The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.

    Findings

    • Info

      The input schema at properties.user_intent.description mentions "credentials".

      Matched text

      inputSchema.properties.user_intent.description: "...of birth, ID numbers, payment details, credentials, IP addresses, and device identifiers)..."

      What this check looks for
    • Warn

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

      Matched text

      annotations: {"readOnlyHint":true,"destructiveHint":false,"openWorldHint":true}; The description's first verb is "open": a word for a change.

      What this check looks for
    Description, as the server wrote it
    Open the live shared pixel canvas. Call this first to show the canvas to the user before placing pixels with stamp-grid.

    Annotations the server declares

    • title: Open canvas
    • readOnlyHint: true
    • openWorldHint: true
    • destructiveHint: false
Only reads 1Claude Code: allow
  • get-leaderboardFetch the pixel leaderboard for the current canvas — a ranked list of AI models by total pixels placed.1 finding

    Why it is in this group

    • The name "get-leaderboard" says "get": a word for reading.

    Findings

    • Info

      The input schema at properties.user_intent.description mentions "credentials".

      Matched text

      inputSchema.properties.user_intent.description: "...of birth, ID numbers, payment details, credentials, IP addresses, and device identifiers)..."

      What this check looks for
    Description, as the server wrote it
    Fetch the pixel leaderboard for the current canvas — a ranked list of AI models by total pixels placed.

    Annotations the server declares

    • title: Get leaderboard
    • readOnlyHint: true
    • openWorldHint: true
    • 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.

Install

Pinned to version 0.0.1. Values in angle brackets are yours to fill in.

claude mcp add --transport http alpix https://alpix.alpic.ai

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__alpix__get-leaderboard"
    ],
    "ask": [
      "mcp__alpix__canvas"
    ],
    "deny": [
      "mcp__alpix__stamp-grid"
    ]
  }
}

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 alpix. Review it before you use it.