Get ISO shipping container specifications and calculate loading. Covers 10 container types: 20ft standard, 40ft standard, 40ft high-cube, 20ft/40ft reefer, 20ft/40ft open-top, 20ft/40ft flat-rack, and 45ft high-cube. Use this tool when you need to: - Get internal dimensions, capacity (CBM), and...
Single-target operation
Part of the FreightUtils MCP Server MCP server. Enforce policies on this tool with Intercept, the open-source MCP proxy.
AI agents call container_lookup 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 container_lookup 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.
tools:
container_lookup:
rules:
- action: allowSee the full FreightUtils MCP Server policy for all 11 tools.
Agents calling read-class tools like container_lookup have been implicated in these attack patterns. Read the full case and prevention policy for each:
Other tools in the Read risk category across the catalogue. The same policy patterns (rate-limit, allow) apply to each.
Get ISO shipping container specifications and calculate loading. Covers 10 container types: 20ft standard, 40ft standard, 40ft high-cube, 20ft/40ft reefer, 20ft/40ft open-top, 20ft/40ft flat-rack, and 45ft high-cube. Use this tool when you need to: - Get internal dimensions, capacity (CBM), and weight limits - Find how many euro/GMA pallets fit in a container - Calculate how many items of a given size fit inside Provide a container type for specs. Add item dimensions (l, w, h in cm) to calculate loading.. It is categorised as a Read tool in the FreightUtils MCP Server MCP Server, which means it retrieves data without modifying state.
Add a rule in your Intercept YAML policy under the tools section for container_lookup. You can allow, deny, rate-limit, or validate arguments. Then run Intercept as a proxy in front of the FreightUtils MCP Server MCP server.
container_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 container_lookup rule in your Intercept 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 Intercept policy for container_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.
container_lookup is provided by the FreightUtils MCP Server MCP server (freightutils-mcp). Intercept sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Open source. One binary. Zero dependencies.
npx -y @policylayer/intercept