AI agents call getCategories to retrieve information from Mcp Upbank without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves category data from Up Bank without any side effects, creation, modification, or deletion. It is a simple query operation returning financial categorization metadata. The read-only mode of the entire server and the absence of any write, execute, or destructive capabilities confirm this classification. Severity is low as unauthorized access to category lists poses minimal risk.
From the tool's definition Tool name 'getCategories' and description 'List categories' indicate a retrieval operation with no modification. Server explicitly operates in 'read-only mode' via the Up Bank API.
Documented attack patterns abuse exactly the kind of access getCategories gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Mcp Upbank, and nothing reaches the server without passing your rules. This is the rule we recommend for getCategories:
{
"version": "1",
"default": "deny",
"tools": {
"getCategories": {}
}
}getCategories is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
Free to start. No card required.
List categories. It is categorised as a Read tool in the Mcp Upbank MCP Server, which means it retrieves data without modifying state.
Register the Mcp Upbank MCP server in PolicyLayer and add a rule for getCategories: 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 Upbank. Nothing to install.
getCategories 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 getCategories 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 getCategories. 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.
getCategories is provided by the Mcp Upbank MCP server (sirmews/mcp-upbank). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Mcp Upbank, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
Free to start. No card required.
13 Mcp Upbank tools catalogued and risk-classified — across an index of 43,000+ MCP servers.