stock_board_change_em
A read tool on the China Stock MCP server.
This record as markdown: /tools/peikuo-china-stock-mcp-server/stock-board-change-em.md
What stock_board_change_em does on China Stock MCP Server
AI agents call stock_board_change_em to retrieve information from China Stock MCP Server without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
Why stock_board_change_em is rated Low
Given the context of a Chinese stock market data server and the naming convention matching sibling tools that are read-only queries, this tool most likely retrieves stock board change information without modifying or executing operations. The empty description lowers confidence slightly, but the pattern of sibling tools and server purpose strongly indicate this is a Read operation.
From the tool's definition Tool name 'stock_board_change_em' suggests it retrieves or fetches data about stock board changes from EM (East Money) data source. The server description indicates it provides 'access to Chinese stock market data' with 'fetch real-time and historical data'.
Attacks that exploit this kind of access
The rule that runs stock_board_change_em safely
PolicyLayer is an MCP gateway: it sits between your AI agents and China Stock MCP Server, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For stock_board_change_em, this is the rule to start with:
stock_board_change_em is read-only, so it stays allowed. Everything else on the server is denied unless you say otherwise.
The button opens the PolicyLayer dashboard: create your workspace, connect China Stock MCP Server, apply this rule, and every stock_board_change_em call is checked against it from then on.
Questions about stock_board_change_em
stock_board_change_em is a read tool on the China Stock MCP Server MCP server. It is categorised as a Read tool in the China Stock MCP Server MCP Server, which means it retrieves data without modifying state.
Register the China Stock MCP Server MCP server in PolicyLayer and add a rule for stock_board_change_em: 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 China Stock MCP Server. Nothing to install.
stock_board_change_em 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 stock_board_change_em 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 stock_board_change_em. 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.
stock_board_change_em is provided by the China Stock MCP Server MCP server (peikuo/china-stock-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
More on China Stock MCP Server, and thousands of servers like it.
This server
Across the catalogue