create_project_update · Linear MCP Server MCP: Risk & Policy

WHAT IT DOES

What create_project_update does on Linear MCP Server

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

WHY IT NEEDS A POLICY

Why create_project_update needs a policy

Creating a project update modifies project state by adding new content, but this is reversible—updates can be edited, deleted, or superseded. It does not execute arbitrary code, delete data irreversibly, or move money.

From the tool's definition Tool name 'create_project_update' and description 'Create a new update for a Linear project' indicate creation of new data. This is a write operation that creates reversible content (project updates can be edited or deleted).

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

create_project_update Rate-limited

create_project_update 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": {
    "create_project_update": {
      "limits": [
        {
          "counter": "create_project_update_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

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PolicyLayer is an MCP gateway: every tool call is checked against your rule before it reaches Linear MCP Server, so you can run agents against it safely.

FAQ

Questions about create_project_update

What does the create_project_update tool do? +

Create a new update for a Linear project. It is categorised as a Write tool in the Linear MCP Server MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on create_project_update? +

Register the Linear MCP Server MCP server in PolicyLayer and add a rule for create_project_update: 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 Linear MCP Server. Nothing to install.

What risk level is create_project_update? +

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

Can I rate-limit create_project_update? +

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

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

create_project_update is provided by the Linear MCP Server MCP server (packetnomad/linear-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.