// SCAN REPORT

MQTTX SSE Server

4 tools. 4 can modify or destroy data without limits.

3 write tools that can modify data. Rate limits recommended.

Last updated: 12 Jun 2026

4 can modify or destroy data

0 read-only

4 tools total

Community server · catalogue entry verified 12/06/2026

How to control MQTTX SSE Server ↓

TOOL MAP

What MQTTX SSE Server exposes to your agents

Read (0) Write / Execute (3) Destructive / Financial (0)

Running more than one server? Check your whole stack →

MOST DANGEROUS TOOLS

High Risk

The most dangerous MQTTX SSE Server tools

Execute · High mqttConnect Establishing a connection to an external MQTT broker is an external operation that creates persistent state (an active network session), analogous to executing a connection command. Execute · Medium mqttSubscribe While subscribing doesn't modify data directly, it executes an operation on an external broker that registers a listener and triggers future message deliveries. Write · Medium mqttPublish mqttPublish sends a message to an MQTT topic, which is a write/create operation.

4 of MQTTX SSE Server's 4 tools can modify, destroy, or commit something on every call — and an agent calls them with no built-in limits.

POLICY

How to control MQTTX SSE Server

PolicyLayer is an MCP gateway — it sits between your AI agents and MQTTX SSE Server, and nothing reaches the server without passing your rules. These are the rules we recommend:

Rate limit write operations

{
  "mqttPublish": {
    "limits": [
      {
        "counter": "mqttpublish_per_hour",
        "window": "hour",
        "max": 30,
        "scope": "grant"
      }
    ]
  }
}

Prevents bulk unintended modifications from agents caught in loops.

Create a free account and register MQTTX SSE Server — nothing to install.
Add these rules — paste them, or build them visually. Tune the limits to your setup.
Point your MCP client (Claude, Cursor, anything) at your gateway URL.

ENFORCE POLICY ON MQTTX SSE →

Free to start. No card required.

FULL CATALOGUE

All 4 MQTTX SSE Server tools

EXECUTE 2 tools

Execute mqttConnect Connects to an MQTT broker with the specified parameters. Execute mqttSubscribe Subscribes to the specified MQTT topic.

WRITE 1 tools

Write mqttPublish Publishes a message to the specified MQTT topic.

OTHER 1 tools

Other mqttDisconnect Disconnects from the currently connected MQTT broker.

FAQ

Questions about MQTTX SSE Server

How do I prevent bulk modifications through MQTTX SSE Server? +

The MQTTX SSE Server server has 1 write tools including mqttPublish. Set a rate limit in your policy -- for example, 10 calls per hour prevents an agent from making more than 10 modifications per hour. PolicyLayer enforces this at the gateway, before calls reach MQTTX SSE Server.

How many tools does the MQTTX SSE Server MCP server expose? +

4 tools across 1 categories: Write. 0 are read-only. 4 can modify, create, or delete data.

How do I enforce a policy on MQTTX SSE Server? +

Register the MQTTX SSE Server MCP server in PolicyLayer, apply the suggested rules above (adjust the limits to your use case), and point your AI client at the PolicyLayer proxy URL instead of the server directly. Your agents keep the same tools; PolicyLayer evaluates every call against policy before it executes. Nothing to install, live in minutes.

Enforce policy on every MQTTX SSE Server tool call.

Deterministic rules across all 4 MQTTX SSE Server tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.

ENFORCE POLICY ON MQTTX SSE →

Free to start. No card required.

4 MQTTX SSE Server tools catalogued and risk-classified — across an index of 43,000+ MCP servers.