{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://zaroz.cloud/contract/units/v1/signal-response.schema.json",
  "title": "Response of POST /<signal>",
  "type": "object",
  "required": ["ok", "signal", "changed"],
  "properties": {
    "ok": { "const": true },
    "signal": { "enum": ["ready", "accepting", "idle", "busy", "shutdown"] },
    "changed": { "type": "boolean", "description": "false when the signal repeated the current state and was coalesced." }
  }
}