Read raw Modbus register(s). Modbus TCP only — not available via MQTT. Advanced tool for reading specific register addresses with explicit data type and scale factor. Use victron_search_docs or victron_list_registers first to find the correct address, data type, and scale factor for the register ...
AI agents call victron_read_register to retrieve information from Victron Tcp without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool performs a pure data retrieval operation from a networked Victron Energy system via Modbus TCP protocol. It queries register values without side effects or state changes. While Modbus can theoretically be used to write registers on some systems, this tool is explicitly scoped to reading only.
From the tool's definition Tool name explicitly contains 'read' and description states 'Read raw Modbus register(s)'. The tool 'read[s] specific register addresses' from Victron Energy systems.
Attacks that exploit this kind of access
Read raw Modbus register(s). Modbus TCP only — not available via MQTT. Advanced tool for reading specific register addresses with explicit data type and scale factor. Use victron_search_docs or victron_list_registers first to find the correct address, data type, and scale factor for the register you want to read. It is categorised as a Read tool in the Victron Tcp MCP Server, which means it retrieves data without modifying state.
Register the Victron Tcp MCP server in PolicyLayer and add a rule for victron_read_register: 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 Victron Tcp. Nothing to install.
victron_read_register is a Read tool with low risk. Read-only tools are generally safe to allow by default.
Yes. Add a rate_limit block to the victron_read_register 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.
Set action: deny in the PolicyLayer policy for victron_read_register. 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.
victron_read_register is provided by the Victron Tcp MCP server (lubosstrejcek/victron-tcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Every MCP server has a record like this.
Type a name, get the same breakdown: verified identity, auth posture, risk grade, capabilities, recommended policy.
Teams ship this data inside their own products. See what a licence covers →