updateLastSeenMessageId · Intervals Icu Api MCP

WHAT IT DOES

What updateLastSeenMessageId does on Intervals Icu Api

AI agents use updateLastSeenMessageId 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`	number	Yes
`msgId`	number	Yes

Parameters from the server's own tool schema.

WHY IT NEEDS A POLICY

Why updateLastSeenMessageId needs a policy

This tool modifies application state (a message tracking field) but the change is reversible and has limited blast radius. It does not execute arbitrary code, delete data permanently, or move money. The operation is a typical Write action that updates a user's chat state. Severity is medium because misuse could obscure chat history visibility for the user, but causes no irreversible damage or data loss.

From the tool's definition Tool name 'updateLastSeenMessageId' and description 'Update last seen message for the chat' indicate a state modification operation that records/updates a message read status or pointer.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

updateLastSeenMessageId Rate-limited

updateLastSeenMessageId 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": {
    "updateLastSeenMessageId": {
      "limits": [
        {
          "counter": "updatelastseenmessageid_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 updateLastSeenMessageId

What does the updateLastSeenMessageId tool do? +

Update last seen message for the chat. 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 updateLastSeenMessageId accept? +

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

How do I enforce a policy on updateLastSeenMessageId? +

Register the Intervals Icu Api MCP server in PolicyLayer and add a rule for updateLastSeenMessageId: 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 updateLastSeenMessageId? +

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

Can I rate-limit updateLastSeenMessageId? +

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

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

updateLastSeenMessageId 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.