Method - open

Creates a new instrument set in the current workspace (same path as the watchlist / “open” flow) for a single exchange, market type, and symbol. This is separate from assign: assign only updates the linked symbol for an existing set that already uses that link color. To open a new set, use open (or open_aggregated); optional linking_type controls which color slot the new set is tied to, similar to the watchlist.

Request

Field	Type	Required	Description
method	string	Yes	Must be "open".
exchange	number	Yes	Exchange id. See Reference.
market_type	number	Yes	0 = Spot, 1 = Futures.
symbol	string	Yes	Display symbol, e.g. TRXUSDT. See Reference.
linking_type	number or string	No	If omitted or null, behavior matches the watchlist: an available link slot is chosen when a new set is created. 0 = None (unlinked), 1 = LinkAuto (treated like "pick available" for opening). 2+ = a specific link color. You may also send a string, e.g. "Link1". See Reference.

Example (linked to Red, Link1)

{
  "method": "open",
  "exchange": 0,
  "market_type": 1,
  "symbol": "TRXUSDT",
  "linking_type": 2
}

Response

Success:

{
  "status": "ok"
}

Error (missing fields):

{
  "status": "error",
  "error_code": 1003,
  "message": "Missing 'exchange', 'market_type', or 'symbol'."
}

Error (unknown symbol / pair):

{
  "status": "error",
  "error_code": 1005,
  "message": "Unknown symbol or exchange for the given market type."
}

Error (no window):

{
  "status": "error",
  "error_code": 1007,
  "message": "No workspace window available."
}

Error (cannot create set):

{
  "status": "error",
  "error_code": 1008,
  "message": "Unable to create instrument set (check workspace chart/order book options)."
}

Other generic errors (invalid JSON, unknown method) follow the same pattern as on Method - assign.