Get real-time stock price with day high/low, volume, 52-week range, and market state. Costs $0.02 USDC per request via x402 on Base. Supports all major US stocks, ETFs, and indices.
AI agents call finance_stock_price to retrieve information from Data Apis without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves public market data (stock prices, volumes, ranges) without side effects. It does not create, modify, or delete data; it does not execute code or commands; it does not move money or create financial obligations. The micropayment mechanism is infrastructure for tool access, not a financial action the tool performs.
From the tool's definition Tool description states it 'Get[s] real-time stock price with day high/low, volume, 52-week range, and market state' — purely a data retrieval operation with no modification, deletion, or financial transaction capability.
Attacks that exploit this kind of access
Get real-time stock price with day high/low, volume, 52-week range, and market state. Costs $0.02 USDC per request via x402 on Base. Supports all major US stocks, ETFs, and indices. It is categorised as a Read tool in the Data Apis MCP Server, which means it retrieves data without modifying state.
Register the Data Apis MCP server in PolicyLayer and add a rule for finance_stock_price: 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 Data Apis. Nothing to install.
finance_stock_price 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 finance_stock_price 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 finance_stock_price. 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.
finance_stock_price is provided by the Data Apis MCP server (yantrix-ai/x402-apis-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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