update_drawing

Update drawing content. Pass null content to clear it.

SERVERHuly SOURCE@firfi/huly-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-dearlordylord-huly-mcp/update-drawing.md

WHAT IT DOES

What update_drawing does on Huly

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

RISK

Why update_drawing is rated Medium

This tool modifies drawing content but does not irreversibly delete data (clearing content can be reverted by re-uploading). It performs a reversible state change on a drawing resource, fitting the Write category. Severity is medium because unintended drawing modifications could cause data loss from a user perspective, but the operation remains reversible and is scoped to a single drawing object.

From the tool's definition Tool name 'update_drawing' and description 'Update drawing content' indicate modification of existing data. The ability to 'Pass null content to clear it' suggests reversible operations on drawing objects.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs update_drawing safely

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

update_drawing Rate-limited

update_drawing 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": {
    "update_drawing": {
      "limits": [
        {
          "counter": "update_drawing_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 Huly, apply this rule, and every update_drawing call is checked against it from then on.

FAQ

Questions about update_drawing

What does the update_drawing tool do? +

Update drawing content. Pass null content to clear it. It is categorised as a Write tool in the Huly MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on update_drawing? +

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

What risk level is update_drawing? +

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

Can I rate-limit update_drawing? +

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

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

update_drawing is provided by the Huly MCP server (@firfi/huly-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

KEEP EXPLORING

More on Huly, and thousands of servers like it.

This server

All 518 Huly tools →

Across the catalogue

aroflo_create_or_update_record on AroFlo MCP →team_manager_update_budget on Team Manager MCP → The MCP Attack Database →

Guides

Govern customer-ops agents →Argument validation →Scoped token →