Writing Rules (JsonLogic)

We use a subset of JsonLogic to match events to workflows.

Supported Operators

Comparison

• ==, !=: Equality
• >, >=: Numeric comparison
• <, <=: Numeric comparison

Logic

• and: All must be true
• or: At least one true
• !: Not

Data Access

Use var to access event data. * {"var": "type"} -> event.type * {"var": "data.user.id"} -> event.payload['data']['user']['id']

Examples

Match specific event type AND high value:

{
  "and": [
    { "==": [{ "var": "type" }, "order.created"] },
    { ">": [{ "var": "data.amount" }, 1000] }
  ]
}

Match one of a list:

{
  "in": [{ "var": "data.status" }, ["failed", "error"]]
}