Get UK bank holidays.
AI agents call get_bank_holidays to retrieve information from GovUK 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 publicly available UK bank holiday information. It has no side effects, does not modify data, execute code, delete records, or involve financial transactions. It is a straightforward data query against a static or regularly-updated public dataset. The low blast radius reflects that misuse would only result in retrieving public information that is already widely available.
From the tool's definition Tool name 'get_bank_holidays' and description 'Get UK bank holidays' indicate a retrieval operation that queries public UK bank holiday data. The verb 'Get' is a read operation with no modification or execution capability.
Attacks that exploit this kind of access
Get UK bank holidays. It is categorised as a Read tool in the GovUK MCP Server MCP Server, which means it retrieves data without modifying state.
Register the GovUK MCP Server MCP server in PolicyLayer and add a rule for get_bank_holidays: 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 GovUK MCP Server. Nothing to install.
get_bank_holidays 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_bank_holidays 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_bank_holidays. 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_bank_holidays is provided by the GovUK MCP Server MCP server (stealth-labs-ltd/govuk-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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