This API method returns split data as a calendar for a given date range. To call custom period, use start_date and end_date parameters.
AI agents call GetSplitsCalendar 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.
This tool retrieves historical stock split calendar data within a specified date range. It performs no write operations, does not execute code or commands, does not delete data, and does not process financial transactions. The misuse risk is minimal; an AI agent could only retrieve market data that is typically public. This is a standard Read operation.
From the tool's definition Tool name 'GetSplitsCalendar' and description states it 'returns split data as a calendar' - purely a retrieval operation with no modification, deletion, or financial transaction capability.
Documented attack patterns abuse exactly the kind of access GetSplitsCalendar 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 GetSplitsCalendar:
{
"version": "1",
"default": "deny",
"tools": {
"GetSplitsCalendar": {}
}
}GetSplitsCalendar 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 method returns split data as a calendar for a given date range. To call custom period, use start_date and end_date parameters. 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 GetSplitsCalendar: 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.
GetSplitsCalendar 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 GetSplitsCalendar 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 GetSplitsCalendar. 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.
GetSplitsCalendar 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.