Get daily stock price history (OHLCV) for an NZX company. Use for price trends, returns, and technical context.
AI agents call get_stock_prices to retrieve information from NZXplorer MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
| Parameter | Type | Required | Description |
|---|---|---|---|
to | string | — | End date (YYYY-MM-DD) |
days | number | — | Number of recent trading days (default 30) |
from | string | — | Start date (YYYY-MM-DD) |
ticker | string | Yes | NZX ticker symbol |
Parameters from the server's own tool schema.
This tool queries and retrieves historical stock price data (Open, High, Low, Close, Volume). It performs no writes, deletes, executions, or financial transactions—merely fetches pre-existing market data accessible to the public. Even if an AI agent calls it excessively, the worst outcome is API rate-limiting or redundant queries, not data loss or financial harm.
From the tool's definition Tool retrieves 'daily stock price history (OHLCV)' for NZX-listed companies. Description explicitly indicates data retrieval with no modification or side effects: 'Use for price trends, returns, and technical context.'
Attacks that exploit this kind of access
Get daily stock price history (OHLCV) for an NZX company. Use for price trends, returns, and technical context. It is categorised as a Read tool in the NZXplorer MCP Server MCP Server, which means it retrieves data without modifying state.
get_stock_prices accepts 4 parameters: to, days, from, ticker. Required: ticker. The full parameter table on this page comes from the server's own tool schema.
Register the NZXplorer MCP Server MCP server in PolicyLayer and add a rule for get_stock_prices: 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 NZXplorer MCP Server. Nothing to install.
get_stock_prices 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_prices 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_prices. 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_prices is provided by the NZXplorer MCP Server MCP server (mambaventures/nzxplorer-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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