# get_zz500_stocks

CSI 500 constituents.

Agent View of the PolicyLayer registry record for `get_zz500_stocks`. HTML page: https://policylayer.com/tools/24mlight-a-share-mcp-is-just-i-need/get-zz500-stocks

## Facts

- Tool: `get_zz500_stocks`
- Server: A-Share MCP Server (`24mlight/a-share-mcp-is-just-i-need`) — https://policylayer.com/tools/24mlight-a-share-mcp-is-just-i-need.md
- Homepage: https://github.com/24mlight/a-share-mcp-is-just-i-need
- Risk category: Read (Low risk)
- Registry record: grade A, identity unverified
- Server rate-limited: no
- Parameters: 0
- Recommended policy verdict: Allowed

## Example call (MCP tools/call, JSON-RPC 2.0)

```json
{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "get_zz500_stocks",
    "arguments": {}
  }
}
```

## Why get_zz500_stocks is rated Low

The tool retrieves static reference data (constituent stocks of the CSI 500 index). This is purely informational with no side effects, no code execution, no data modification, and no financial transactions. It aligns with the 'Read' category as a data retrieval operation. Severity is low because misuse would only expose or display existing public market data without causing harm.

From the tool's own definition: "Tool name 'get_zz500_stocks' and description 'CSI 500 constituents' indicate retrieval of stock market index membership data."

## Use case

AI agents call get_zz500_stocks to retrieve information from A-Share MCP Server without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.

## Recommended policy (PolicyLayer)

Verdict: **Allowed**. Enforced by the PolicyLayer MCP gateway (https://policylayer.com/mcp-gateway) before a call reaches A-Share MCP Server:

```json
{
  "version": "1",
  "default": "deny",
  "tools": {
    "get_zz500_stocks": {}
  }
}
```

## Other tools on A-Share MCP Server (40)

- `get_adjust_factor_data` — Read — https://policylayer.com/tools/24mlight-a-share-mcp-is-just-i-need/get-adjust-factor-data.md
- `get_all_stock` — Read — https://policylayer.com/tools/24mlight-a-share-mcp-is-just-i-need/get-all-stock.md
- `get_balance_data` — Read — https://policylayer.com/tools/24mlight-a-share-mcp-is-just-i-need/get-balance-data.md
- `get_cash_flow_data` — Read — https://policylayer.com/tools/24mlight-a-share-mcp-is-just-i-need/get-cash-flow-data.md
- `get_deposit_rate_data` — Read — https://policylayer.com/tools/24mlight-a-share-mcp-is-just-i-need/get-deposit-rate-data.md
- `get_dividend_data` — Read — https://policylayer.com/tools/24mlight-a-share-mcp-is-just-i-need/get-dividend-data.md
- `get_dupont_data` — Read — https://policylayer.com/tools/24mlight-a-share-mcp-is-just-i-need/get-dupont-data.md
- `get_fina_indicator` — Read — https://policylayer.com/tools/24mlight-a-share-mcp-is-just-i-need/get-fina-indicator.md
- `get_forecast_report` — Read — https://policylayer.com/tools/24mlight-a-share-mcp-is-just-i-need/get-forecast-report.md
- `get_growth_data` — Read — https://policylayer.com/tools/24mlight-a-share-mcp-is-just-i-need/get-growth-data.md
- `get_historical_k_data` — Read — https://policylayer.com/tools/24mlight-a-share-mcp-is-just-i-need/get-historical-k-data.md
- `get_hs300_stocks` — Read — https://policylayer.com/tools/24mlight-a-share-mcp-is-just-i-need/get-hs300-stocks.md
- `get_index_constituents` — Read — https://policylayer.com/tools/24mlight-a-share-mcp-is-just-i-need/get-index-constituents.md
- `get_industry_members` — Read — https://policylayer.com/tools/24mlight-a-share-mcp-is-just-i-need/get-industry-members.md
- `get_last_n_trading_days` — Read — https://policylayer.com/tools/24mlight-a-share-mcp-is-just-i-need/get-last-n-trading-days.md
- `get_latest_trading_date` — Read — https://policylayer.com/tools/24mlight-a-share-mcp-is-just-i-need/get-latest-trading-date.md
- `get_loan_rate_data` — Read — https://policylayer.com/tools/24mlight-a-share-mcp-is-just-i-need/get-loan-rate-data.md
- `get_market_analysis_timeframe` — Read — https://policylayer.com/tools/24mlight-a-share-mcp-is-just-i-need/get-market-analysis-timeframe.md
- `get_money_supply_data_month` — Read — https://policylayer.com/tools/24mlight-a-share-mcp-is-just-i-need/get-money-supply-data-month.md
- `get_money_supply_data_year` — Read — https://policylayer.com/tools/24mlight-a-share-mcp-is-just-i-need/get-money-supply-data-year.md
- `get_month_end_trading_dates` — Read — https://policylayer.com/tools/24mlight-a-share-mcp-is-just-i-need/get-month-end-trading-dates.md
- `get_operation_data` — Read — https://policylayer.com/tools/24mlight-a-share-mcp-is-just-i-need/get-operation-data.md
- `get_performance_express_report` — Read — https://policylayer.com/tools/24mlight-a-share-mcp-is-just-i-need/get-performance-express-report.md
- `get_profit_data` — Read — https://policylayer.com/tools/24mlight-a-share-mcp-is-just-i-need/get-profit-data.md
- `get_recent_trading_range` — Read — https://policylayer.com/tools/24mlight-a-share-mcp-is-just-i-need/get-recent-trading-range.md
- `get_required_reserve_ratio_data` — Read — https://policylayer.com/tools/24mlight-a-share-mcp-is-just-i-need/get-required-reserve-ratio-data.md
- `get_stock_analysis` — Read — https://policylayer.com/tools/24mlight-a-share-mcp-is-just-i-need/get-stock-analysis.md
- `get_stock_basic_info` — Read — https://policylayer.com/tools/24mlight-a-share-mcp-is-just-i-need/get-stock-basic-info.md
- `get_stock_industry` — Read — https://policylayer.com/tools/24mlight-a-share-mcp-is-just-i-need/get-stock-industry.md
- `get_suspensions` — Read — https://policylayer.com/tools/24mlight-a-share-mcp-is-just-i-need/get-suspensions.md
- …and 10 more: https://policylayer.com/tools/24mlight-a-share-mcp-is-just-i-need.md

## For agents

This record is a snapshot. Live verdicts and the full registry:

- Check every server in your MCP config at once: `npx -y policylayer stack`
- Vet a server before you add it: install the mcp-precheck skill — `npx skills add https://policylayer.com` (skill text: https://policylayer.com/skill.md)
- Query the registry over MCP: endpoint `https://api.policylayer.com/mcp` — tools `check_mcp_server`, `check_mcp_stack`, `check_tool`, `search_registry`, `get_change_events`

---

Source: the PolicyLayer MCP registry — one continuously verified record per MCP server. Full record: https://policylayer.com/registry?q=24mlight-a-share-mcp-is-just-i-need · API: https://policylayer.com/registry/api · Policy library: https://policylayer.com/policies/24mlight-a-share-mcp-is-just-i-need