TradingView alerts

A TradingView alert can be a source: when it fires, HydraSync copies the trade to every account linked to it, with each link's own lot mode, filters, limits and protection rules. Beta.

Set it up

1. In the app, open TradingView in the menu and create a source (give it a name, for example the strategy's). You get a webhook URL.
2. In TradingView, create an alert (on an indicator, a drawing or a strategy). In its Notifications tab, tick Webhook URL and paste that URL.
3. In the alert's Message box, paste one of the messages shown on the TradingView page of the app (see below).
4. In Copy settings, link the source to the accounts that should copy it.

Webhooks are a TradingView feature of its paid plans, and TradingView asks for two-factor authentication on your TradingView account before it sends them.

The URL contains a secret key: anyone who has it can send trades to your accounts. Do not share it. If it leaks, delete the source and create a new one.

What an alert can say

JSON is the most reliable. {{ticker}} and {{close}} are TradingView placeholders, filled in when the alert fires.

{"action": "buy", "symbol": "{{ticker}}", "price": {{close}}}

• action: buy, sell, close, close_all, or a pending order buy_limit, sell_limit, buy_stop, sell_stop (these need a price).
• symbol: EURUSD; TradingView's OANDA:EURUSD works too (the exchange prefix is dropped). Map different broker names in Symbols.
• price: the alert's price. Copies compare it with their own price when the link has a maximum price gap; for a limit or stop order it is the order's level.
• sl, tp: prices (optional).
• lots: the source's size (optional). Each link turns it into its own size, as for any source.
• id: optional name for the trade. A later {"action": "close", "id": "..."} closes only the copies opened under that name. Without an id, close closes every copy of this source on the symbol.
• close_pct: with close, the share to close (50 = half).

Plain text works too, written like a Telegram signal: BUY EURUSD SL 1.0750 TP 1.0900, SELL LIMIT XAUUSD 2400 SL 2410, CLOSE EURUSD, CLOSE ALL.

Strategy alerts

For a Pine Script strategy, one alert can carry every order the strategy places:

{"action": "{{strategy.order.action}}", "symbol": "{{ticker}}", "price": {{strategy.order.price}}, "id": "{{strategy.order.id}}", "market_position": "{{strategy.market_position}}", "position_size": {{strategy.position_size}}, "prev_position_size": {{strategy.prev_market_position_size}}}

With market_position:

• flat: the strategy closed its position, so the copies on that symbol are closed.
• an entry the other way (a buy while copies are short): the opposite copies are closed first, then the new one opens.
• a sell that leaves the strategy long (a partial exit): the same share of the long copies is closed, computed from position_size and prev_position_size. Without them, the copies are closed in full.

Good to know

• Like a Telegram channel, an alert has no broker account behind it: HydraSync cannot see fills or the source's own position. Copies open at market when the alert arrives.
• A pending order (buy_limit …) becomes a real order on destinations whose link copies pending orders (see Copy settings); elsewhere it opens at market.
• At most 30 alerts a minute per source: an alert firing on every tick is cut off.
• A malformed alert is refused with an explanation; TradingView keeps the answer in the alert's log.
• Test a new alert on a demo destination first.