get_topic_info
AI agents call get_topic_info to retrieve information from ROS 2 MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves metadata about ROS 2 topics, which is an introspection/query operation with no side effects. While the description is empty, the naming convention and context among read-only sibling tools strongly indicate it queries topic information without creating, modifying, or deleting data. The blast radius of misuse is minimal—it returns information about the ROS 2 system topology.
From the tool's definition Tool name 'get_topic_info' follows a read pattern consistent with sibling tools like 'get_node_info', 'get_nodes', 'get_package_manifest', and 'get_parameter', all of which retrieve system information without modification.
Attacks that exploit this kind of access
get_topic_info. It is categorised as a Read tool in the ROS 2 MCP Server MCP Server, which means it retrieves data without modifying state.
Register the ROS 2 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 ROS 2 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 ROS 2 MCP Server MCP server (ranch-hand-robotics/rde-mcp-ros-2). 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 →