update_tenant · Lanten MCP Server MCP: Risk & Policy

WHAT IT DOES

What update_tenant does on Lanten MCP Server

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

WHY IT NEEDS A POLICY

Why update_tenant needs a policy

The tool modifies existing tenant records (Write category) rather than deleting or destructively overwriting them. The update is reversible—fields can be changed back to previous values. Severity is medium because tenant record modifications could impact property management operations and tenant relationships, but the effect is bounded to a single tenant record and reversible.

From the tool's definition Tool name is 'update_tenant' and description states 'Update an existing tenant. Only supplied fields are changed.' This performs reversible modification of tenant data.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

update_tenant Rate-limited

update_tenant 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_tenant": {
      "limits": [
        {
          "counter": "update_tenant_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 Lanten MCP Server, so you can run agents against it safely.

FAQ

Questions about update_tenant

What does the update_tenant tool do? +

Update an existing tenant. Only supplied fields are changed. It is categorised as a Write tool in the Lanten MCP Server 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_tenant? +

Register the Lanten MCP Server MCP server in PolicyLayer and add a rule for update_tenant: 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 Lanten MCP Server. Nothing to install.

What risk level is update_tenant? +

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

Can I rate-limit update_tenant? +

Yes. Add a rate_limit block to the update_tenant 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_tenant completely? +

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

update_tenant is provided by the Lanten MCP Server MCP server (lanten-ai/mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.