update_decision · RoadBoard MCP: Risk & Policy

WHAT IT DOES

What update_decision does on RoadBoard

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

WHY IT NEEDS A POLICY

Why update_decision needs a policy

This tool modifies project decision records reversibly by updating their state and metadata. It does not delete, execute code, move money, or trigger external operations—it only changes decision attributes within the RoadBoard platform. This is a classic Write operation.

From the tool's definition Tool name 'update_decision' and description 'Update an existing decision: change status, record outcome, add rationale, or mark as resolved' indicate modification of existing data (status, outcome, rationale, resolution state).

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

update_decision Rate-limited

update_decision 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_decision": {
      "limits": [
        {
          "counter": "update_decision_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 RoadBoard, so you can run agents against it safely.

FAQ

Questions about update_decision

What does the update_decision tool do? +

Update an existing decision: change status, record outcome, add rationale, or mark as resolved. It is categorised as a Write tool in the RoadBoard 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_decision? +

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

What risk level is update_decision? +

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

Can I rate-limit update_decision? +

Yes. Add a rate_limit block to the update_decision 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_decision completely? +

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

update_decision is provided by the RoadBoard MCP server (maless88/roadboard). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.