{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://tattvabodha.com/schemas/tattvabodha-phala-effect-v1.0.0.schema.json",
  "title": "Tattvabodha Phala Effect",
  "description": "One nonzero change applied by the trusted Karma service to a canonical entity total; totals may never become negative.",
  "type": "object",
  "required": ["entity", "measure", "amount"],
  "properties": {
    "entity": { "type": "string", "pattern": "^[a-z][a-z0-9_-]*:.+$" },
    "measure": { "type": "string", "minLength": 1 },
    "amount": { "type": "number", "not": { "const": 0 } }
  },
  "additionalProperties": false
}