Get quote data for a single symbol through yahoo-finance2
AI agents call quoteCombine to retrieve information from Yahoo Finance2 without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves financial quote data (price, volume, etc.) for a specified stock symbol from Yahoo Finance. It performs no mutations, creates no obligations, and executes no external actions—it simply queries and returns data. Therefore it is classified as Read with low severity, as misuse would only expose publicly available financial information without causing operational harm.
From the tool's definition Tool name 'quoteCombine' and description 'Get quote data for a single symbol through yahoo-finance2' indicate data retrieval only. The verb 'Get' and lack of any modification language confirm read-only behavior.
Attacks that exploit this kind of access
Get quote data for a single symbol through yahoo-finance2. It is categorised as a Read tool in the Yahoo Finance2 MCP Server, which means it retrieves data without modifying state.
Register the Yahoo Finance2 MCP server in PolicyLayer and add a rule for quoteCombine: 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 Yahoo Finance2. Nothing to install.
quoteCombine 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 quoteCombine 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 quoteCombine. 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.
quoteCombine is provided by the Yahoo Finance2 MCP server (gadicc/yahoo-finance2). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
quoteCombine is one line of Yahoo Finance2's registry record.
The record carries the whole server: verified identity, auth posture, risk grade, every tool classified, recommended policy — re-checked continuously.
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