Look up or search the US Harmonized Tariff Schedule (HTS / HS codes). Pass code for an exact HTS number (returns the line + 10-digit stat suffixes with duty rates), or query for free-text → ranked candidate HS codes by hierarchical heading. ~29.6k public-domain USITC lines. The deterministic back...
AI agents call trade.tariff 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 query and retrieval tool with no capability to modify, delete, or execute operations. While it provides tariff information that could inform financial decisions, it does not itself move money, create obligations, or execute trades. The tool is informational only, making it a Read category with low severity - misuse would merely return incorrect lookup results rather than cause harm.
From the tool's definition Tool performs lookup and search operations on US Harmonized Tariff Schedule data. Descriptions indicate 'Look up or search' and 'returns the line + duty rates', with no mention of modification, deletion, or execution capabilities.
Attacks that exploit this kind of access
Look up or search the US Harmonized Tariff Schedule (HTS / HS codes). Pass code for an exact HTS number (returns the line + 10-digit stat suffixes with duty rates), or query for free-text → ranked candidate HS codes by hierarchical heading. ~29.6k public-domain USITC lines. The deterministic backbone for tariff classification. 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 trade.tariff: 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.
trade.tariff 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 trade.tariff 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 trade.tariff. 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.
trade.tariff 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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