Read digital input data from the GX device. On Cerbo GX, this reads the primary digital input. Includes state (open/closed/running/stopped), input type (door, bilge, alarm, generator), alarm status, and pulse count. Unit ID is always 100.
AI agents call victron_digital_inputs 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 only retrieves status information from Victron Energy devices (state of digital inputs, alarm status, pulse counts). It has no side effects, cannot modify device configuration or data, and poses minimal risk if misused by an AI agent—at worst providing stale or inaccurate status readings.
From the tool's definition Tool description states 'Read digital input data' and lists only retrieval operations: reads state, input type, alarm status, and pulse count. No modification, deletion, or execution capabilities are mentioned.
Attacks that exploit this kind of access
Read digital input data from the GX device. On Cerbo GX, this reads the primary digital input. Includes state (open/closed/running/stopped), input type (door, bilge, alarm, generator), alarm status, and pulse count. Unit ID is always 100. 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_digital_inputs: 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_digital_inputs 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_digital_inputs 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_digital_inputs. 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_digital_inputs 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.
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