get_realtime_kline
AI agents call get_realtime_kline to retrieve information from A Share without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves financial market data (K-line/candlestick charts) without modifying, deleting, or executing operations. It is a read-only query function consistent with the server's purpose of providing data access to Chinese stock market information. No destructive, financial transactions, or code execution capabilities are involved.
From the tool's definition Tool name 'get_realtime_kline' indicates retrieval of real-time K-line (candlestick) data. The server description confirms it 'provides real-time quotes, historical K-lines, financial statements, and technical indicators' with 'support for intraday real-time…
Documented attack patterns abuse exactly the kind of access get_realtime_kline gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and A Share, and nothing reaches the server without passing your rules. This is the rule we recommend for get_realtime_kline:
{
"version": "1",
"default": "deny",
"tools": {
"get_realtime_kline": {}
}
}get_realtime_kline is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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get_realtime_kline. It is categorised as a Read tool in the A Share MCP Server, which means it retrieves data without modifying state.
Register the A Share MCP server in PolicyLayer and add a rule for get_realtime_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 A Share. Nothing to install.
get_realtime_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 get_realtime_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 get_realtime_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.
get_realtime_kline is provided by the A Share MCP server (shouldnotappearcalm/a-share-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from A Share, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
Free to start. No card required.
55 A Share tools catalogued and risk-classified — across an index of 43,000+ MCP servers.