aseprite_create_sprite · Aseprite MCP: Risk & Policy

WHAT IT DOES

What aseprite_create_sprite does on Aseprite

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

WHY IT NEEDS A POLICY

Why aseprite_create_sprite needs a policy

The tool creates a new sprite file using drawing operations, which is a reversible write action (new file creation). It does not delete or overwrite existing data, execute arbitrary shell commands, or involve financial transactions. The dryRun option further confirms the primary action is writing/generating a sprite artifact.

From the tool's definition "Create a sprite from structured drawing operations" — creates new sprite data; dryRun option confirms it writes/generates artifacts

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

aseprite_create_sprite Rate-limited

aseprite_create_sprite 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": {
    "aseprite_create_sprite": {
      "limits": [
        {
          "counter": "aseprite_create_sprite_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 Aseprite, so you can run agents against it safely.

FAQ

Questions about aseprite_create_sprite

What does the aseprite_create_sprite tool do? +

Create a sprite from structured drawing operations. Supports dryRun to inspect generated Lua. It is categorised as a Write tool in the Aseprite MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on aseprite_create_sprite? +

Register the Aseprite MCP server in PolicyLayer and add a rule for aseprite_create_sprite: 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 Aseprite. Nothing to install.

What risk level is aseprite_create_sprite? +

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

Can I rate-limit aseprite_create_sprite? +

Yes. Add a rate_limit block to the aseprite_create_sprite 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 aseprite_create_sprite completely? +

Set action: deny in the PolicyLayer policy for aseprite_create_sprite. 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 aseprite_create_sprite? +

aseprite_create_sprite is provided by the Aseprite MCP server (ryan3719/asprite-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.