AI agents call check_token_status to retrieve information from Smart Financial without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool performs a read-only status check on an API token. It retrieves information about token validity/status but produces no side effects, does not execute code or commands, does not modify data, and does not involve financial transactions. It is a simple diagnostic query operation, making it a Read category tool with low severity.
From the tool's definition Tool name 'check_token_status' and description '检查Tushare token状态' (Check Tushare token status) indicate a query operation that retrieves the current status of an API authentication token without modifying, executing, or deleting anything.
Documented attack patterns abuse exactly the kind of access check_token_status gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Smart Financial, and nothing reaches the server without passing your rules. This is the rule we recommend for check_token_status:
{
"version": "1",
"default": "deny",
"tools": {
"check_token_status": {}
}
}check_token_status is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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检查Tushare token状态. It is categorised as a Read tool in the Smart Financial MCP Server, which means it retrieves data without modifying state.
Register the Smart Financial MCP server in PolicyLayer and add a rule for check_token_status: 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 Smart Financial. Nothing to install.
check_token_status 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 check_token_status 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 check_token_status. 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.
check_token_status is provided by the Smart Financial MCP server (yuhai0/smart-financial-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Smart Financial, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
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12 Smart Financial tools catalogued and risk-classified — across an index of 43,000+ MCP servers.