List available destinations from the Unstructured API.
AI agents call list_destinations to retrieve information from Unstructured API MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool queries and retrieves a list of existing destinations from the API without creating, modifying, deleting, or executing any operations. It is purely informational and read-only, making it a Read category tool with low severity.
From the tool's definition Tool name is 'list_destinations' and description states it 'List available destinations'. The verb 'list' is a retrieval operation with no side effects.
Documented attack patterns abuse exactly the kind of access list_destinations gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Unstructured API MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for list_destinations:
{
"version": "1",
"default": "deny",
"tools": {
"list_destinations": {}
}
}list_destinations is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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List available destinations from the Unstructured API. It is categorised as a Read tool in the Unstructured API MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Unstructured API MCP Server MCP server in PolicyLayer and add a rule for list_destinations: 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 Unstructured API MCP Server. Nothing to install.
list_destinations 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_destinations 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_destinations. 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_destinations is provided by the Unstructured API MCP Server MCP server (unstructured-io/uns-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 12 Unstructured API MCP Server tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
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12 Unstructured API MCP Server tools catalogued and risk-classified — across an index of 42,500+ MCP servers.