# normalize_index_code

Normalize common index codes to Baostock format.

Agent View of the PolicyLayer registry record for `normalize_index_code`. HTML page: https://policylayer.com/tools/24mlight-a-share-mcp-is-just-i-need/normalize-index-code

## Facts

- Tool: `normalize_index_code`
- 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": "normalize_index_code",
    "arguments": {}
  }
}
```

## Why normalize_index_code is rated Low

This is a utility function that converts or maps index code formats without retrieving, modifying, deleting, or executing operations. It performs a stateless transformation on input parameters. The blast radius of misuse is negligible—incorrect normalization might cause failed lookups or return no results, but cannot corrupt data, execute code, or trigger financial transactions.

From the tool's own definition: "Tool normalizes index codes to a standard format; the description indicates data transformation/lookup with no modification of underlying data ('Normalize common index codes to Baostock format')."

## Use case

AI agents call normalize_index_code 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": {
    "normalize_index_code": {}
  }
}
```

## 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