AI agents call search_real_estate_data to retrieve information from Mcp Swiss without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
The tool searches open public datasets for real estate and housing information. No data is created, modified, deleted, or executed. It returns query results from publicly available data sources, making it a read-only operation with minimal risk even if misused by an AI agent.
From the tool's definition Tool name and description indicate searching/querying datasets: 'search opendata.swiss for Swiss real estate and housing datasets'. This is retrieval without modification.
Attacks that exploit this kind of access
Search opendata.swiss for Swiss real estate and housing datasets. It is categorised as a Read tool in the Mcp Swiss MCP Server, which means it retrieves data without modifying state.
Register the Mcp Swiss MCP server in PolicyLayer and add a rule for search_real_estate_data: 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 Swiss. Nothing to install.
search_real_estate_data 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_real_estate_data 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_real_estate_data. 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_real_estate_data is provided by the Mcp Swiss MCP server (mcp-swiss). 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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