splitInterval · Intervals Icu Api MCP: Risk & Policy

WHAT IT DOES

What splitInterval does on Intervals Icu Api

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

PARAMETERS

Parameter	Type	Required	Description
`id`	string	Yes
`splitAt`	number	Yes	Index to split interval at

Parameters from the server's own tool schema.

WHY IT NEEDS A POLICY

Why splitInterval needs a policy

Splitting an interval modifies existing interval data by dividing it into parts. This is a reversible write operation (the intervals could potentially be merged back), but it does alter the data structure. No indication of deletion or financial impact.

From the tool's definition 'Split an interval' — splitting modifies/restructures existing data

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

splitInterval Rate-limited

splitInterval 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": {
    "splitInterval": {
      "limits": [
        {
          "counter": "splitinterval_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 Intervals Icu Api, so you can run agents against it safely.

FAQ

Questions about splitInterval

What does the splitInterval tool do? +

Split an interval. It is categorised as a Write tool in the Intervals Icu Api MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

What parameters does splitInterval accept? +

splitInterval accepts 2 parameters: id, splitAt. Required: id, splitAt. The full parameter table on this page comes from the server's own tool schema.

How do I enforce a policy on splitInterval? +

Register the Intervals Icu Api MCP server in PolicyLayer and add a rule for splitInterval: 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 Intervals Icu Api. Nothing to install.

What risk level is splitInterval? +

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

Can I rate-limit splitInterval? +

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

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

splitInterval is provided by the Intervals Icu Api MCP server (intervals-icu-api-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.