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Operators table ​

Reference of all operators accepted in entry_conditions and exit_conditions of declarative mode.

Crossover operators ​

Fire once, on the exact bar of the transition:

OperatorAliasFires when
crosses_above--source[t-1] <= target[t-1] AND source[t] > target[t]
crosses_below--source[t-1] >= target[t-1] AND source[t] < target[t]
crosses--crosses_above OR crosses_below

Comparison operators ​

Fire on every bar on which the condition holds:

OperatorSymbolic aliasMeans
greater_than>source[t] > target[t]
greater_or_equal>=source[t] >= target[t]
less_than<source[t] < target[t]
less_or_equal<=source[t] <= target[t]
equals==source[t] == target[t]
not_equals!=source[t] != target[t]

The engine accepts both the textual name and the symbol. Prefer the textual form for readability.

Condition shape ​

python
{
    "name": "Readable name",         # optional
    "description": "Explanation",    # optional - tooltip
    "source": "series_name",         # key in series - required
    "operator": "crosses_above",     # required
    "target": "other_series",        # key in series, OR
    "value": 30,                     # numeric constant
    "action": "buy_to_open",         # required
    "enabled": True,                 # false = ignores the condition
    "message": "Log message",        # optional
}

Provide target OR value, not both. If both are provided, target prevails.

Examples ​

Crossover between two series ​

python
{
    "source": "ma_fast",
    "operator": "crosses_above",
    "target": "ma_slow",
    "action": "buy_to_open",
    "enabled": True,
}

Crossover of a fixed value ​

python
{
    "source": "rsi",
    "operator": "crosses_above",
    "value": 30,
    "action": "buy_to_open",
    "enabled": True,
}

Absolute comparison ​

python
{
    "source": "rsi",
    "operator": "less_than",
    "value": 30,
    "action": "buy_to_open",
    "enabled": True,
}

Caution: this condition fires on every bar on which RSI < 30 and the position is zero. If RSI remains oversold for 5 consecutive bars, the script attempts to open 5 times. Prefer crosses_above to avoid repetition.

Operator selection ​

GoalUse
Buy when X crosses Y upwardcrosses_above
Sell when X is below Y (any bar)less_than
Act when X crosses Y in either directioncrosses
Filter entries by RSI > 50greater_than (combined with imperative)

Combined conditions (AND/OR) do not exist in declarative mode. For "enter only if ma_fast > ma_slow AND rsi < 30", use imperative mode.

Common errors ​

Unknown operator ​

Use exactly the name from the table above. greaterThan (camelCase) does not work; it is greater_than (snake_case).

source does not exist ​

The key must match the return of _build_chart in the df= branch. If the script does not return the referenced series, the engine evaluates it as absent and the condition does not fire.

target pointing at itself ​

python
{"source": "ma_fast", "operator": "crosses_above", "target": "ma_fast", ...}  # invalid

Logically impossible; a series does not cross itself. The engine silently ignores it.

equals comparison on floats ​

python
{"source": "rsi", "operator": "equals", "value": 50.0}  # rarely fires

RSI is a float and is rarely exactly 50.0. Use less_than 51 and greater_than 49 for an approximation, or redesign the logic.

Details on other pages ​