screen_kr_momentum
AI agents call screen_kr_momentum to retrieve information from Stock MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
Based on sibling tool naming patterns (screen_*) and the server's core function of providing technical analysis and stock screening without data modification capabilities, this tool retrieves or queries momentum screening results for Korean stocks. No side effects, no data creation/modification, and no code execution—purely informational Read access.
From the tool's definition Tool name 'screen_kr_momentum' and sibling tools like 'screen_kr_breakout', 'screen_us_breakout', 'screen_us_momentum' all follow a screening/analysis pattern.
Attacks that exploit this kind of access
screen_kr_momentum. It is categorised as a Read tool in the Stock MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Stock MCP Server MCP server in PolicyLayer and add a rule for screen_kr_momentum: 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 Stock MCP Server. Nothing to install.
screen_kr_momentum 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 screen_kr_momentum 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 screen_kr_momentum. 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.
screen_kr_momentum is provided by the Stock MCP Server MCP server (juuuuuuni/stock-mcp-server). 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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