generate_grid_collage

Tile N screenshot images into a single grid collage PNG for visual inspection.

SERVERNodebench SOURCEnodebench-mcp

Medium RISK CLASS

Category Write

Parameters 00 required

Recommended Rate-limitedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/io-github-homenshum-nodebench/generate-grid-collage.md

WHAT IT DOES

What generate_grid_collage does on Nodebench

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

RISK

Why generate_grid_collage is rated Medium

This tool creates a new output file (PNG image) by combining multiple inputs. It is reversible (the output can be deleted) and has no destructive, financial, or code execution properties. The blast radius is minimal—misuse would only result in unwanted image files being created. Classified as Write rather than Read because it produces new data artifacts.

From the tool's definition Tool description states it creates 'a single grid collage PNG', which is generating and writing a new image file from input screenshots.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs generate_grid_collage safely

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

generate_grid_collage Rate-limited

generate_grid_collage 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": {
    "generate_grid_collage": {
      "limits": [
        {
          "counter": "generate_grid_collage_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL → Instant setup, no code required.

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

FAQ

Questions about generate_grid_collage

What does the generate_grid_collage tool do? +

Tile N screenshot images into a single grid collage PNG for visual inspection. It is categorised as a Write tool in the Nodebench MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on generate_grid_collage? +

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

What risk level is generate_grid_collage? +

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

Can I rate-limit generate_grid_collage? +

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

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

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

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