update_chat · Unipile MCP: Risk & Policy

WHAT IT DOES

What update_chat does on Unipile

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

WHY IT NEEDS A POLICY

Why update_chat needs a policy

An AI agent can call update_chat faster than any human can review — one bad instruction and it creates or modifies resources in Unipile by the hundred, each call as confident as the last.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

update_chat Rate-limited

update_chat 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_chat": {
      "limits": [
        {
          "counter": "update_chat_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 Unipile, so you can run agents against it safely.

FAQ

Questions about update_chat

What does the update_chat tool do? +

Update chat settings (archive, mute, mark read/unread). It is categorised as a Write tool in the Unipile 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_chat? +

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

What risk level is update_chat? +

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

Can I rate-limit update_chat? +

Yes. Add a rate_limit block to the update_chat 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_chat completely? +

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

update_chat is provided by the Unipile MCP server (sundeepg98/mcp-server-unipile). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.