List available carriers
AI agents call list_carriers to retrieve information from Trackmage MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool performs a simple listing/query operation to retrieve carrier information. It has no side effects, does not execute code or external operations, does not modify data, and does not involve financial transactions. It is a straightforward read operation with minimal blast radius if misused by an AI agent.
From the tool's definition Tool name 'list_carriers' and description 'List available carriers' indicate a data retrieval operation that queries available shipping carriers without modifying, executing against external systems, or causing irreversible changes.
Attacks that exploit this kind of access
List available carriers. It is categorised as a Read tool in the Trackmage MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Trackmage MCP Server MCP server in PolicyLayer and add a rule for list_carriers: 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 Trackmage MCP Server. Nothing to install.
list_carriers 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 list_carriers 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 list_carriers. 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.
list_carriers is provided by the Trackmage MCP Server MCP server (trackmage/trackmage-mcp-server). 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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