update_task_state · ReliaQuest GreyMatter MCP Server MCP

WHAT IT DOES

What update_task_state does on ReliaQuest GreyMatter MCP Server

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

WHY IT NEEDS A POLICY

Why update_task_state needs a policy

This tool modifies task state, which is a reversible change to existing data. It does not execute arbitrary code (which would be Execute), delete data (which would be Destructive), or move money (Financial). The 'mutation' descriptor and input parameters confirm this is a write operation.

From the tool's definition Tool name includes 'update_task_state' and description indicates it is a 'mutation' that takes 'input' variables, which is characteristic of write operations in GraphQL APIs. The action modifies the state of existing tasks.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

update_task_state Rate-limited

update_task_state 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_task_state": {
      "limits": [
        {
          "counter": "update_task_state_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL →

Instant setup, no code required.

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

FAQ

Questions about update_task_state

What does the update_task_state tool do? +

Tasks \u00b7 mutation updateTaskState. Variables: after, filter, first, order, input. Example variables: {\. It is categorised as a Write tool in the ReliaQuest GreyMatter 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 update_task_state? +

Register the ReliaQuest GreyMatter MCP Server MCP server in PolicyLayer and add a rule for update_task_state: 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 ReliaQuest GreyMatter MCP Server. Nothing to install.

What risk level is update_task_state? +

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

Can I rate-limit update_task_state? +

Yes. Add a rate_limit block to the update_task_state 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_task_state completely? +

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

update_task_state is provided by the ReliaQuest GreyMatter MCP Server MCP server (space-c0wboy/reliaquest-greymatter-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.