png_to_spritesheet · Mcp Spritesheet Forge MCP

WHAT IT DOES

What png_to_spritesheet does on Mcp Spritesheet Forge

AI agents use png_to_spritesheet to create or update resources in Mcp Spritesheet Forge — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Mcp Spritesheet Forge environment.

WHY IT NEEDS A POLICY

Why png_to_spritesheet needs a policy

This tool creates a new asset (spritesheet) by combining existing PNG files and uploads it, returning a download URL. It is a Write operation — creating/uploading data reversibly — with no destructive, financial, or code-execution implications. Medium severity because it produces and uploads files to an external service, but the blast radius is limited to asset generation.

From the tool's definition Merge multiple PNG files into a single spritesheet... Returns a download URL

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

png_to_spritesheet Rate-limited

png_to_spritesheet stays usable, but capped — an agent stuck in a loop can't make hundreds of changes a minute. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "png_to_spritesheet": {
      "limits": [
        {
          "counter": "png_to_spritesheet_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL →

Instant setup, no code required.

PolicyLayer is an MCP gateway: every tool call is checked against your rule before it reaches Mcp Spritesheet Forge, so you can run agents against it safely.

FAQ

Questions about png_to_spritesheet

What does the png_to_spritesheet tool do? +

Merge multiple PNG files into a single spritesheet. Supports grid, horizontal, vertical, and packed (bin-packed) layouts with optional TexturePacker-compatible JSON metadata. Returns a download URL. It is categorised as a Write tool in the Mcp Spritesheet Forge MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on png_to_spritesheet? +

Register the Mcp Spritesheet Forge MCP server in PolicyLayer and add a rule for png_to_spritesheet: allow, deny, rate-limit, or require approval. Point your MCP client at the PolicyLayer proxy URL and the rule is enforced on every call, before it reaches Mcp Spritesheet Forge. Nothing to install.

What risk level is png_to_spritesheet? +

png_to_spritesheet is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.

Can I rate-limit png_to_spritesheet? +

Yes. Add a rate_limit block to the png_to_spritesheet rule in your PolicyLayer policy. For example, setting max: 10 and window: 60 limits the tool to 10 calls per minute. Rate limits are tracked per agent session and reset automatically.

How do I block png_to_spritesheet completely? +

Set action: deny in the PolicyLayer policy for png_to_spritesheet. The AI agent will receive a policy violation error and cannot call the tool. You can also include a reason field to explain why the tool is blocked.

What MCP server provides png_to_spritesheet? +

png_to_spritesheet is provided by the Mcp Spritesheet Forge MCP server (laxy9887/game-dev.-spritesheet-forge). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.