add_card_label · Scrumdo MCP: Risk & Policy

WHAT IT DOES

What add_card_label does on Scrumdo

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

WHY IT NEEDS A POLICY

Why add_card_label needs a policy

Adding a label is a reversible modification of card metadata. It doesn't delete or permanently alter data (Destructive), execute arbitrary operations (Execute), move money (Financial), or merely read data (Read). It fits Write category as it modifies state on the ScrumDo board.

From the tool's definition Tool description states 'Add a single label to a card' - this creates/modifies metadata on a card by adding a new label while preserving existing ones.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

add_card_label Rate-limited

add_card_label 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": {
    "add_card_label": {
      "limits": [
        {
          "counter": "add_card_label_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

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Instant setup, no code required.

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

FAQ

Questions about add_card_label

What does the add_card_label tool do? +

Add a single label to a card, preserving existing labels. It is categorised as a Write tool in the Scrumdo MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on add_card_label? +

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

What risk level is add_card_label? +

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

Can I rate-limit add_card_label? +

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

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

add_card_label is provided by the Scrumdo MCP server (scrumdollc/scrumdo-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.