Search for registered charities by name.
AI agents call search_charities 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 performs a read-only search against a public registry of UK charities. It retrieves data without side effects, matches the 'search' pattern explicitly listed as Read category, and poses minimal risk if misused by an agent (worst case: repeated queries or information disclosure of already-public data).
From the tool's definition Tool is described as 'Search for registered charities by name' — a straightforward query operation that retrieves public information without modifying, deleting, or executing code.
Attacks that exploit this kind of access
Search for registered charities by name. 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 search_charities: 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.
search_charities 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 search_charities 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 search_charities. 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.
search_charities 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.
Every MCP server has a record like this.
Type a name, get the same breakdown: verified identity, auth posture, risk grade, capabilities, recommended policy.
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