AI agents call find_unmapped_tags to retrieve information from Bridge without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
Despite the empty description reducing confidence, the name indicates a query/discovery operation typical of a Read action—locating unmapped tags without modifying systems. However, the medium severity reflects that exposing unmapped tags could reveal system gaps that could be exploited to cause operational disruptions in a SCADA environment.
From the tool's definition Tool name 'find_unmapped_tags' suggests identifying or discovering unmapped tags in SCADA/PLC systems; the server context indicates it performs analysis and tracing rather than modification or deletion.
Attacks that exploit this kind of access
find_unmapped_tags. It is categorised as a Read tool in the Bridge MCP Server, which means it retrieves data without modifying state.
Register the Bridge MCP server in PolicyLayer and add a rule for find_unmapped_tags: 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 Bridge. Nothing to install.
find_unmapped_tags 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 find_unmapped_tags 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 find_unmapped_tags. 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.
find_unmapped_tags is provided by the Bridge MCP server (nodeblue-ai/bridge-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.
Teams ship this data inside their own products. See what a licence covers →