AI agents call get_splits to retrieve information from Tiingo 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 information from the Tiingo API. It performs a read-only query operation with no ability to modify, delete, or execute external commands. The data returned is factual historical information about corporate actions. There is no financial transaction, code execution, or destructive capability.
From the tool's definition Tool name 'get_splits' and description 'Get historical stock split data' indicate data retrieval with no modification or side effects.
Attacks that exploit this kind of access
Get historical stock split data. It is categorised as a Read tool in the Tiingo MCP Server, which means it retrieves data without modifying state.
Register the Tiingo MCP server in PolicyLayer and add a rule for get_splits: 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 Tiingo. Nothing to install.
get_splits 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 get_splits 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 get_splits. 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.
get_splits is provided by the Tiingo MCP server (major7apps/tiingo-mcp). 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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