Get detailed information about a specific ROS topic
AI agents call get_topic_info to retrieve information from Rosbridge MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool queries and retrieves information about ROS topics without side effects. It performs a read-only operation on topic metadata, consistent with the Read category definition (retrieves or queries data; no side effects). The low severity reflects minimal risk even if misused, as it only exposes topic structure and properties rather than enabling control of robot behavior or data modification.
From the tool's definition Tool name 'get_topic_info' and description 'Get detailed information about a specific ROS topic' indicate retrieval of metadata about a topic with no modification or execution of commands.
Attacks that exploit this kind of access
Get detailed information about a specific ROS topic. It is categorised as a Read tool in the Rosbridge MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Rosbridge MCP Server MCP server in PolicyLayer and add a rule for get_topic_info: 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 Rosbridge MCP Server. Nothing to install.
get_topic_info 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 get_topic_info 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 get_topic_info. 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.
get_topic_info is provided by the Rosbridge MCP Server MCP server (takanarishimbo/rosbridge-mcp-server). 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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