List all active serial connections.
AI agents call serial_list_connections to retrieve information from MCP Remote Access without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool only queries and returns information about existing serial connections without creating, modifying, deleting, executing commands, or triggering any external effects. It is a read-only enumeration operation analogous to 'list' or 'get' operations.
From the tool's definition Tool description states 'List all active serial connections' which is purely informational retrieval with no side effects or modifications.
Attacks that exploit this kind of access
List all active serial connections. It is categorised as a Read tool in the MCP Remote Access MCP Server, which means it retrieves data without modifying state.
Register the MCP Remote Access MCP server in PolicyLayer and add a rule for serial_list_connections: 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 MCP Remote Access. Nothing to install.
serial_list_connections 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 serial_list_connections 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 serial_list_connections. 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.
serial_list_connections is provided by the MCP Remote Access MCP server (rfingadam/mcp-remote-access). 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 →