AI agents call tiger_get_kline to retrieve information from Tiger MCP without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves candlestick (kline) chart data for market analysis purposes. It queries historical or real-time price data without creating orders, modifying positions, or executing trades. No side effects or irreversible actions are indicated. Consistent with the 'Read' category for data retrieval operations.
From the tool's definition Tool name 'tiger_get_kline' follows the pattern of other data retrieval tools on this server (tiger_get_market_data, tiger_get_account_info, tiger_get_contracts, etc.). 'Kline' is financial terminology for candlestick chart data.
Documented attack patterns abuse exactly the kind of access tiger_get_kline gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Tiger MCP, and nothing reaches the server without passing your rules. This is the rule we recommend for tiger_get_kline:
{
"version": "1",
"default": "deny",
"tools": {
"tiger_get_kline": {}
}
}tiger_get_kline is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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tiger_get_kline. It is categorised as a Read tool in the Tiger MCP MCP Server, which means it retrieves data without modifying state.
Register the Tiger MCP server in PolicyLayer and add a rule for tiger_get_kline: 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 Tiger MCP. Nothing to install.
tiger_get_kline 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 tiger_get_kline 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 tiger_get_kline. 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.
tiger_get_kline is provided by the Tiger MCP server (luxiaolei/tiger-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Tiger MCP, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
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23 Tiger MCP tools catalogued and risk-classified — across an index of 43,000+ MCP servers.