Slice a spritesheet PNG into frames and produce an animated GIF or WebP. Provide columns+rows (grid mode) or cell_width+cell_height (cell mode).
AI agents call spritesheet_to_animation as a supporting operation in Mcp Spritesheet Forge workflows.
Without any rule in front of it, every call an agent makes to spritesheet_to_animation happens silently — no trail, no cap, no way to know it misbehaved until something breaks downstream.
Attacks that exploit this kind of access
Slice a spritesheet PNG into frames and produce an animated GIF or WebP. Provide columns+rows (grid mode) or cell_width+cell_height (cell mode). It is categorised as a Other tool in the Mcp Spritesheet Forge MCP Server, which means it performs auxiliary operations.
Register the Mcp Spritesheet Forge MCP server in PolicyLayer and add a rule for spritesheet_to_animation: 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.
spritesheet_to_animation is a Other tool with low risk. Read-only tools are generally safe to allow by default.
Yes. Add a rate_limit block to the spritesheet_to_animation 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.
Set action: deny in the PolicyLayer policy for spritesheet_to_animation. 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.
spritesheet_to_animation 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.
Every MCP server has a record like this.
Type a name, get the same breakdown: verified identity, auth posture, risk grade, capabilities, recommended policy.
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