Look up a Finnish company by Business ID (Y-tunnus). Returns detailed information including registers, addresses, and history.
AI agents call company_lookup to retrieve information from Mcp Finnish Companies without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool only queries and retrieves publicly available company registry data from the Finnish PRH/YTJ database. No data is created, modified, deleted, or executed. It is a straightforward read operation against official open government data. The blast radius of misuse is minimal—worst case an attacker gains access to publicly available business information that is already open data.
From the tool's definition Tool performs lookup and returns information without modifying or deleting data. The description states it 'Look up' and 'Returns detailed information' - purely retrieval operations.
Attacks that exploit this kind of access
Look up a Finnish company by Business ID (Y-tunnus). Returns detailed information including registers, addresses, and history. It is categorised as a Read tool in the Mcp Finnish Companies MCP Server, which means it retrieves data without modifying state.
Register the Mcp Finnish Companies MCP server in PolicyLayer and add a rule for company_lookup: 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 Finnish Companies. Nothing to install.
company_lookup 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 company_lookup 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 company_lookup. 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.
company_lookup is provided by the Mcp Finnish Companies MCP server (robobobby/mcp-finnish-companies). 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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