Search NZX-listed companies by name or ticker. Returns company list with sector, market cap. Use this to find a company ticker before calling other tools.
AI agents call search_companies 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 |
|---|---|---|---|
limit | number | — | Max results (default 10) |
search | string | — | Company name or ticker to search for (e.g. "air new zealand" or "AIR") |
sector | string | — | Filter by sector (e.g. "Energy", "Healthcare") |
Parameters from the server's own tool schema.
This is a straightforward search and retrieval operation that queries existing data without creating, modifying, deleting, or executing anything. It has minimal blast radius if misused by an AI agent—returning public market data poses no financial or operational risk. Classified as Read with low severity.
From the tool's definition The tool 'search_companies' retrieves and returns company data (name, ticker, sector, market cap) from a stock market database.
Attacks that exploit this kind of access
Search NZX-listed companies by name or ticker. Returns company list with sector, market cap. Use this to find a company ticker before calling other tools. It is categorised as a Read tool in the NZXplorer MCP Server MCP Server, which means it retrieves data without modifying state.
search_companies accepts 3 parameters: limit, search, sector. 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 search_companies: 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.
search_companies 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 search_companies 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 search_companies. 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.
search_companies 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.
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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