{ "$schema": "https://json-schema.org/draft/2020-12/schema", "title": "Envelope", "type": "object", "required": ["kind", "fromNodeId", "toNodeId", "payload"], "properties": { "kind": { "type": "string", "enum": ["handoff", "signal"] }, "fromNodeId": { "type": "string" }, "toNodeId": { "type": "string" }, "payload": { "type": "object", "properties": { "message": { "type": "string" }, "structured": { "type": "object", "additionalProperties": true }, "artifacts": { "type": "array", "items": { "$ref": "#/definitions/ArtifactRef" } }, "status": { "type": "object", "properties": { "ok": { "type": "boolean" }, "reason": { "type": "string" } }, "required": ["ok"], "additionalProperties": false } }, "additionalProperties": false } }, "additionalProperties": false, "definitions": { "ArtifactRef": { "type": "object", "required": ["type", "ref"], "properties": { "type": { "type": "string" }, "ref": { "type": "string" } }, "additionalProperties": false } } }