Performs a comprehensive search across all parliamentary data including documents, activities, and cases. Returns results matching the provided keyword or phrase. Use this for general searches when you need information on any topic discussed in parliament, regardless of document type or context. ...
AI agents call search_tk to retrieve information from OpenTK Model Context Protocol Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
The tool retrieves and queries publicly available parliamentary documents and data without any side effects. It searches for information matching keywords but does not create, modify, delete, or execute any operations. This is a classic Read operation.
From the tool's definition Tool performs a 'comprehensive search across all parliamentary data' and 'Returns results matching the provided keyword or phrase.' This is a search/query operation with no modification, deletion, or execution capabilities.
Documented attack patterns abuse exactly the kind of access search_tk gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and OpenTK Model Context Protocol Server, and nothing reaches the server without passing your rules. This is the rule we recommend for search_tk:
{
"version": "1",
"default": "deny",
"tools": {
"search_tk": {}
}
}search_tk is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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Performs a comprehensive search across all parliamentary data including documents, activities, and cases. Returns results matching the provided keyword or phrase. Use this for general searches when you need information on any topic discussed in parliament, regardless of document type or context. Search syntax: Searching for. It is categorised as a Read tool in the OpenTK Model Context Protocol Server MCP Server, which means it retrieves data without modifying state.
Register the OpenTK Model Context Protocol Server MCP server in PolicyLayer and add a rule for search_tk: 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 OpenTK Model Context Protocol Server. Nothing to install.
search_tk 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_tk 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_tk. 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_tk is provided by the OpenTK Model Context Protocol Server MCP server (r-huijts/opentk-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from OpenTK Model Context Protocol Server, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
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17 OpenTK Model Context Protocol Server tools catalogued and risk-classified — across an index of 43,000+ MCP servers.