longbridge-ah-premium

A/H premium ratio for dual-listed Mainland-Chinese companies — historical kline or today's intraday curve.

Response language: match the user's input language — Simplified Chinese / Traditional Chinese / English.

When to use

Trigger when the user asks about the price gap between an HK listing and its A-share twin:

• "工行 A/H 溢价", "工行 AH 比价" → 1398.HK
• "建行 AH 折价" → 939.HK
• "中国平安港股比 A 股贵多少" → 2318.HK
• "AH premium for ICBC over the last year" → 1398.HK --kline-type day --count 250
• "今天 939 的 AH 溢价走势" → intraday 939.HK

For single-symbol quote, use longbridge-quote. For comparison of unrelated tickers, use longbridge-peer-comparison.

Symbol format

Always pass the HK side (<CODE>.HK) of the dual-listed pair. The Longbridge API maps internally to the A-share counterpart. Common pairs:

If the user gives an A-share symbol, translate to the HK side. If the stock is not dual-listed (e.g. 700.HK), the API returns no data — report that, don't retry.

Subcommands

Run longbridge ah-premium --help (and longbridge ah-premium intraday --help) if unsure of current flags.

--kline-type: 1m / 5m / 15m / 30m / 60m / day (default) / week / month / year. --count defaults to 100.

Workflow

1. Identify the dual-listed pair; pass the HK symbol.
2. Decide mode:
   • "近一年 / last year走势" → kline --kline-type day --count 250
   • "近一月 / past month" → kline --kline-type day --count 22
   • "今天 / 当日 / intraday" → intraday subcommand
3. Run the command, render the time series (table or summary: latest premium %, range, trend).
4. Cite source as Longbridge Securities / 数据来源:长桥证券 / 數據來源:長橋證券.

CLI examples

# Default daily kline (100 days)
longbridge ah-premium 939.HK                                       --format json

# Last year of daily premium
longbridge ah-premium 1398.HK --kline-type day --count 250         --format json

# Last 12 weeks
longbridge ah-premium 2318.HK --kline-type week --count 12         --format json

# Today's intraday premium curve
longbridge ah-premium intraday 939.HK                              --format json

Output

Each row carries a timestamp and a premium ratio (typically expressed as (H_price * fx) / A_price - 1, in %). Negative = HK trades at a discount to A-share. Surface latest value + recent range.

Error handling

MCP fallback

When the CLI is unavailable, fall back to the MCP server. Discover available tools from the MCP server's tool list at runtime — do not rely on hardcoded tool names.

Related skills

File layout

longbridge-ah-premium/
└── SKILL.md          # prompt-only, no scripts/