Get social media sentiment metrics from Finnhub (Reddit/Twitter).
AI agents call get_social_sentiment to retrieve information from IB Portfolio Tracker 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 sentiment metrics from external sources (Reddit/Twitter via Finnhub) without creating, modifying, deleting, or executing any operations. It is purely informational and has no side effects on accounts, positions, or financial systems. The blast radius of misuse is minimal—an attacker could only access sentiment data, not manipulate portfolios or execute trades.
From the tool's definition Tool name 'get_social_sentiment' and description 'Get social media sentiment metrics from Finnhub (Reddit/Twitter)' indicate data retrieval with no modification or execution capability.
Attacks that exploit this kind of access
Get social media sentiment metrics from Finnhub (Reddit/Twitter). It is categorised as a Read tool in the IB Portfolio Tracker MCP Server MCP Server, which means it retrieves data without modifying state.
Register the IB Portfolio Tracker MCP Server MCP server in PolicyLayer and add a rule for get_social_sentiment: 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 IB Portfolio Tracker MCP Server. Nothing to install.
get_social_sentiment 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_social_sentiment 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_social_sentiment. 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_social_sentiment is provided by the IB Portfolio Tracker MCP Server MCP server (vinbg/ib-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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