Provides stock information, including news titles for sentiment analysis (price, name, percent change, news) for one or more stocks. Ticker names must be provided in all caps, with no special characters.
AI agents call get-stock to retrieve information from Subspace Api without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves and queries real-time stock data and news sentiment without creating, modifying, deleting, or executing any operations. It is a read-only data retrieval operation with minimal blast radius if misused by an AI agent.
From the tool's definition Tool provides stock information including price, name, percent change, and news titles. The description uses "Provides" and "information" indicating data retrieval with no modification or execution capabilities. No side effects are mentioned.
Attacks that exploit this kind of access
Provides stock information, including news titles for sentiment analysis (price, name, percent change, news) for one or more stocks. Ticker names must be provided in all caps, with no special characters. It is categorised as a Read tool in the Subspace Api MCP Server, which means it retrieves data without modifying state.
Register the Subspace Api MCP server in PolicyLayer and add a rule for get-stock: 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 Subspace Api. Nothing to install.
get-stock 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-stock 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-stock. 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-stock is provided by the Subspace Api MCP server (subtype-space/subspace-api). 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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