Check if dangerous goods qualify for ADR Limited Quantity (LQ) or Excepted Quantity (EQ) exemptions. ADR 3.4 (Limited Quantities) allows reduced requirements for small quantities packed in inner packagings below a per-substance maximum. ADR 3.5 (Excepted Quantities, codes E1–E5) applies to very s...
Part of the FreightUtils MCP Server server.
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AI agents call adr_lq_eq_check to retrieve information from FreightUtils MCP Server without modifying any data. This is common in research, monitoring, and reporting workflows where the agent needs context before taking action. Because read operations don't change state, they are generally safe to allow without restrictions -- but you may still want rate limits to control API costs.
Even though adr_lq_eq_check only reads data, uncontrolled read access can leak sensitive information or rack up API costs. An agent caught in a retry loop could make thousands of calls per minute. A rate limit gives you a safety net without blocking legitimate use.
Read-only tools are safe to allow by default. No rate limit needed unless you want to control costs.
{
"version": "1",
"default": "deny",
"tools": {
"adr_lq_eq_check": {}
}
}See the full FreightUtils MCP Server policy for all 19 tools.
These attack patterns abuse exactly the kind of access adr_lq_eq_check gives an agent. Each links to the full case and the policy that stops it:
Other read tools across the catalogue. The same approach applies to each: allow, with a rate cap to control cost.
Check if dangerous goods qualify for ADR Limited Quantity (LQ) or Excepted Quantity (EQ) exemptions. ADR 3.4 (Limited Quantities) allows reduced requirements for small quantities packed in inner packagings below a per-substance maximum. ADR 3.5 (Excepted Quantities, codes E1–E5) applies to very small quantities with even stricter per-inner limits. Use this tool when you need to: - Check whether one or more items qualify for LQ transport (ADR 3.4) - Check whether one or more items qualify for EQ transport (ADR 3.5) - Work out the per-item LQ maximum or EQ code/limit for a UN number - Batch-check up to 20 items in a single call Provide the mode ('lq' or 'eq') and an array of items with un_number, quantity, and unit. For EQ mode, optionally include inner_packaging_qty to validate the packaging arrangement.. It is categorised as a Read tool in the FreightUtils MCP Server MCP Server, which means it retrieves data without modifying state.
Register the FreightUtils MCP Server MCP server in PolicyLayer and add a rule for adr_lq_eq_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 FreightUtils MCP Server. Nothing to install.
adr_lq_eq_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 adr_lq_eq_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 adr_lq_eq_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.
adr_lq_eq_check is provided by the FreightUtils MCP Server MCP server (freightutils-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 19 FreightUtils MCP Server tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
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