AI agents call who_mentions to retrieve information from Ris without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves information from a searchable database of Austrian federal law without modifying, deleting, or executing any operations. It is a query/search function that returns matching results. The search scope is limited to finding citation mentions in existing legal documents. There is no data modification, destruction, financial impact, or code execution involved.
From the tool's definition Tool performs 'full-text search' on a 'local RIS index' to find laws that mention a citation. The verb 'search' and the read-only nature of querying an index indicate data retrieval with no side effects.
Attacks that exploit this kind of access
Full-text search the local RIS index for laws that mention a given citation. It is categorised as a Read tool in the Ris MCP Server, which means it retrieves data without modifying state.
Register the Ris MCP server in PolicyLayer and add a rule for who_mentions: 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 Ris. Nothing to install.
who_mentions 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 who_mentions 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 who_mentions. 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.
who_mentions is provided by the Ris MCP server (noahpfi/ris-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
who_mentions is one line of Ris's registry record.
The record carries the whole server: verified identity, auth posture, risk grade, every tool classified, recommended policy — re-checked continuously.
Teams ship this data inside their own products. See what a licence covers →