AI agents call get_tag to retrieve information from MCP Auth without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves a single tag resource by its identifier. It performs a read-only query operation that does not create, modify, delete, or execute any operations. The action is a simple data retrieval with no destructive, financial, or code execution implications. Severity is low because unauthorized access to tag metadata poses minimal risk in typical systems.
From the tool's definition Tool name 'get_tag' and description 'Get a tag by ID' indicate a retrieval operation with no modification or side effects.
Attacks that exploit this kind of access
Get a tag by ID. It is categorised as a Read tool in the MCP Auth MCP Server, which means it retrieves data without modifying state.
Register the MCP Auth MCP server in PolicyLayer and add a rule for get_tag: 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 Auth. Nothing to install.
get_tag 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_tag 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_tag. 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_tag is provided by the MCP Auth MCP server (rubenpenap/mcp-auth). 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 →