paint_tile

Paint a single tile. THIS SPENDS REAL USDC on Base -- $0.005 per tile;

SERVER21millionpixels SOURCE21millionpixels-mcp

Low RISK CLASS

Category Read

Parameters 00 required

Recommended Allowedsee the rule below

Registry record Grade A, identity unverified Pull the record →

This record as markdown: /tools/21millionpixels-mcp/paint-tile.md

WHAT IT DOES

What paint_tile does on 21millionpixels

AI agents call paint_tile to retrieve information from 21millionpixels without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.

RISK

Why paint_tile is rated Low

Even though paint_tile only reads data, uncontrolled read access leaks sensitive information and racks up API costs: an agent caught in a retry loop can make thousands of calls a minute without anyone noticing.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs paint_tile safely

PolicyLayer is an MCP gateway: it sits between your AI agents and 21millionpixels, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For paint_tile, this is the rule to start with:

paint_tile Allowed

paint_tile is read-only, so it stays allowed. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "paint_tile": {}
  }
}

ALLOW ONLY THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect 21millionpixels, apply this rule, and every paint_tile call is checked against it from then on.

FAQ

Questions about paint_tile

What does the paint_tile tool do? +

Paint a single tile. THIS SPENDS REAL USDC on Base -- $0.005 per tile;. It is categorised as a Read tool in the 21millionpixels MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on paint_tile? +

Register the 21millionpixels MCP server in PolicyLayer and add a rule for paint_tile: 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 21millionpixels. Nothing to install.

What risk level is paint_tile? +

paint_tile is a Read tool with low risk. Read-only tools are generally safe to allow by default.

Can I rate-limit paint_tile? +

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

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

paint_tile is provided by the 21millionpixels MCP server (21millionpixels-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

KEEP EXPLORING

More on 21millionpixels, and thousands of servers like it.

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All 6 21millionpixels tools →

Across the catalogue

The MCP Attack Database →

Guides

Roll out MCP under one policy →Data exfiltration →MCP token cost →