set_delivery · Ebb Ai MCP: Risk & Policy

WHAT IT DOES

What set_delivery does on Ebb Ai

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

WHY IT NEEDS A POLICY

Why set_delivery needs a policy

This is a reversible Write operation that modifies task properties (delivery method, deadline, or schedule parameters) rather than executing the task itself or destructively deleting it. The ability to change delivery settings is metadata-level modification. Given the limited blast radius (affecting only queued task properties, not external systems or financial transactions), severity is low.

From the tool's definition Tool allows to 'Set or change' configuration of a scheduled task, indicating modification of task metadata/parameters in the scheduler.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

set_delivery Rate-limited

set_delivery 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": {
    "set_delivery": {
      "limits": [
        {
          "counter": "set_delivery_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 Ebb Ai, so you can run agents against it safely.

FAQ

Questions about set_delivery

What does the set_delivery tool do? +

Set or change how a scheduled task. It is categorised as a Write tool in the Ebb Ai MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on set_delivery? +

Register the Ebb Ai MCP server in PolicyLayer and add a rule for set_delivery: 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 Ebb Ai. Nothing to install.

What risk level is set_delivery? +

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

Can I rate-limit set_delivery? +

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

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

set_delivery is provided by the Ebb Ai MCP server (vitalini/ebb-ai). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.