{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "urn:orbiplex:schema:sensorium-interface-subscribe-request:v1",
  "title": "Sensorium Interface Subscribe Request v1",
  "description": "Request to create a caller-bound, bounded Sensorium Interface lease.",
  "type": "object",
  "additionalProperties": false,
  "required": [
    "schema",
    "schema/v",
    "interface/id",
    "lease/requested-seconds",
    "batch",
    "deadline/at",
    "causal/context"
  ],
  "properties": {
    "schema": { "const": "sensorium-interface-subscribe-request.v1", "description": "Contract discriminator." },
    "schema/v": { "const": 1, "description": "Contract version." },
    "interface/id": { "type": "string", "pattern": "^sensorium-interface:[^\\s]+$", "maxLength": 512, "description": "Interface resource to subscribe to." },
    "cursor/after": { "type": "string", "minLength": 1, "maxLength": 4096, "description": "Optional resume point bound to this interface and source generation." },
    "lease/requested-seconds": { "type": "integer", "minimum": 1, "maximum": 86400, "description": "Requested lease duration before descriptor, grant, and host narrowing." },
    "batch": {
      "type": "object",
      "additionalProperties": false,
      "required": ["frames/max", "bytes/max", "wait/max-ms"],
      "description": "Default read-next bounds retained by the lease.",
      "properties": {
        "frames/max": { "type": "integer", "minimum": 1, "maximum": 256, "description": "Maximum requested frames per batch." },
        "bytes/max": { "type": "integer", "minimum": 1, "maximum": 1048576, "description": "Maximum serialized bytes per result." },
        "wait/max-ms": { "type": "integer", "minimum": 1, "maximum": 15000, "description": "Maximum long-poll wait before no-change." }
      }
    },
    "deadline/at": { "type": "string", "format": "date-time", "description": "Absolute deadline for subscription admission." },
    "causal/context": { "$ref": "causal-context.v1.schema.json", "description": "P081 context for traceability; never authority." }
  }
}