update_huly_permission

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-huly-permission.md

WHAT IT DOES

What update_huly_permission does on Huly

AI agents use update_huly_permission 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_huly_permission is rated Medium

This tool modifies permission settings and constraints through reversible updates. While permissions control access (making this security-sensitive), the tool itself performs Write operations—updating labels, descriptions, and constraints on custom permissions. The presence of SECURITY_WRITE_GUARD suggests the server implements protective measures.

From the tool's definition Tool name contains 'update' and description explicitly states 'Update a custom Huly Permission' with operations like 'Label/description changes are allowed'. The description confirms reversible modifications to permission configurations.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs update_huly_permission 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_huly_permission, this is the rule to start with:

update_huly_permission Rate-limited

update_huly_permission 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_huly_permission": {
      "limits": [
        {
          "counter": "update_huly_permission_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_huly_permission call is checked against it from then on.

FAQ

Questions about update_huly_permission

What does the update_huly_permission tool do? +

Update a custom Huly Permission resolved by exact ID or exact label. Namespaced built-in permissions are protected. Label/description changes are allowed on unreferenced custom permissions; semantic changes are refused while referenced by a role or SpaceType descriptor. Null clears optional constraints. ${SECURITY_WRITE_GUARD}. 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_huly_permission? +

Register the Huly MCP server in PolicyLayer and add a rule for update_huly_permission: 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_huly_permission? +

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

Can I rate-limit update_huly_permission? +

Yes. Add a rate_limit block to the update_huly_permission 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_huly_permission completely? +

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

update_huly_permission 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

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