This API request returns a list of mutual funds available at Twelve Data. Sorting is in descending order by total assets value. The list is updated daily.
AI agents call GetMutualFundsList to retrieve information from Twelve Data MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
GetMutualFundsList retrieves metadata about available mutual funds from Twelve Data's catalog. It performs a query operation that returns static reference data (a daily-updated list), sorted by a field. There is no ability to modify, delete, execute code, or commit financial obligations. The tool is read-only and has minimal blast radius if called unexpectedly—it merely returns informational data.
From the tool's definition Tool 'returns a list' of mutual funds with 'sorting' by assets—a pure retrieval operation with no modification, deletion, execution, or financial transaction capability.
Documented attack patterns abuse exactly the kind of access GetMutualFundsList gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Twelve Data MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for GetMutualFundsList:
{
"version": "1",
"default": "deny",
"tools": {
"GetMutualFundsList": {}
}
}GetMutualFundsList is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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This API request returns a list of mutual funds available at Twelve Data. Sorting is in descending order by total assets value. The list is updated daily. It is categorised as a Read tool in the Twelve Data MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Twelve Data MCP Server MCP server in PolicyLayer and add a rule for GetMutualFundsList: 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 Twelve Data MCP Server. Nothing to install.
GetMutualFundsList 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 GetMutualFundsList 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 GetMutualFundsList. 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.
GetMutualFundsList is provided by the Twelve Data MCP Server MCP server (twelvedata/mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 186 Twelve Data MCP Server tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
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186 Twelve Data MCP Server tools catalogued and risk-classified — across an index of 42,500+ MCP servers.