Screen companies by price range, volume, cash runway, float, shares outstanding,
AI agents call screen_companies to retrieve information from Signal8 MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves and filters financial data about companies based on specified criteria. It is a search/query operation with no side effects, data modification, code execution, or financial movement. Categorized as Read with low severity since misuse would only retrieve information relevant to financial research, not cause direct harm.
From the tool's definition Tool name 'screen_companies' and description indicate querying/filtering companies by financial metrics (price range, volume, cash runway, float, shares outstanding). No modification, deletion, execution, or financial transaction occurs.
Attacks that exploit this kind of access
Screen companies by price range, volume, cash runway, float, shares outstanding,. It is categorised as a Read tool in the Signal8 MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Signal8 MCP Server MCP server in PolicyLayer and add a rule for screen_companies: 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 Signal8 MCP Server. Nothing to install.
screen_companies 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_companies 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_companies. 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_companies is provided by the Signal8 MCP Server MCP server (signal8ai/signal8-mcp). 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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