mist_upsert_user_mac

A write tool on the API-Central MCP server.

SERVERAPI-Central SOURCEsecure-ssid/centralmcp

Medium RISK CLASS

Category Write

Parameters 00 required

Recommended Rate-limitedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/secure-ssid-centralmcp/mist-upsert-user-mac.md

WHAT IT DOES

What mist_upsert_user_mac does on API-Central

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

RISK

Why mist_upsert_user_mac is rated Medium

The 'upsert' operation semantically means 'update if exists, insert if not'—a reversible write operation. In network management context, upserting MAC addresses affects user/device association policies but is not destructive (data can be corrected) or irreversible.

From the tool's definition Tool name 'mist_upsert_user_mac' contains 'upsert' (update/insert), indicating a write operation that creates or modifies data.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs mist_upsert_user_mac safely

PolicyLayer is an MCP gateway: it sits between your AI agents and API-Central, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For mist_upsert_user_mac, this is the rule to start with:

mist_upsert_user_mac Rate-limited

mist_upsert_user_mac 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": {
    "mist_upsert_user_mac": {
      "limits": [
        {
          "counter": "mist_upsert_user_mac_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect API-Central, apply this rule, and every mist_upsert_user_mac call is checked against it from then on.

FAQ

Questions about mist_upsert_user_mac

What does the mist_upsert_user_mac tool do? +

mist_upsert_user_mac is a write tool on the API-Central MCP server. It is categorised as a Write tool in the API-Central MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on mist_upsert_user_mac? +

Register the API-Central MCP server in PolicyLayer and add a rule for mist_upsert_user_mac: 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 API-Central. Nothing to install.

What risk level is mist_upsert_user_mac? +

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

Can I rate-limit mist_upsert_user_mac? +

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

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

mist_upsert_user_mac is provided by the API-Central MCP server (secure-ssid/centralmcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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