AI agents call law.sanctions-check to retrieve information from Mcp without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This is a lookup/search tool that reads from a sanctions database to check names against regulatory lists. While the output (sanctions status) has regulatory and compliance implications, the tool itself performs only read operations.
From the tool's definition Tool performs a 'fuzzy-match' query against OFAC SDN list and 'returns ranked matches' — it retrieves and queries data with no modification, deletion, or execution of external operations.
Attacks that exploit this kind of access
Fuzzy-match a name (person, company, vessel, aircraft) against the US Treasury OFAC SDN list. Returns ranked matches with similarity scores and sanctions program metadata. List refreshed daily. It is categorised as a Read tool in the Mcp MCP Server, which means it retrieves data without modifying state.
Register the MCP server in PolicyLayer and add a rule for law.sanctions-check: 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. Nothing to install.
law.sanctions-check 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 law.sanctions-check 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 law.sanctions-check. 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.
law.sanctions-check is provided by the MCP server (@2sio/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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