{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "urn:orbiplex:schema:service-offer:v1",
  "title": "ServiceOffer v1",
  "description": "Machine-readable schema for one standing exchange-facing service offer published by a provider-side subject. This artifact is catalog-facing and distinct from transport-facing node advertisements. Host-side pricing remains computable through explicit unit semantics rather than through parsing human-readable labels.",
  "type": "object",
  "additionalProperties": true,
  "x-dia-workflow": "project",
  "x-dia-status": "accepted",
  "x-dia-basis": [
    "doc/project/30-stories/story-006.md",
    "doc/project/30-stories/story-006-buyer-node-components.md",
    "doc/project/40-proposals/021-service-offers-orders-and-procurement-bridge.md",
    "doc/project/50-requirements/requirements-012.md"
  ],
  "required": [
    "schema/v",
    "offer/id",
    "created-at",
    "published-at",
    "expires-at",
    "sequence/no",
    "provider/node-id",
    "provider/participant-id",
    "service/type",
    "service/description",
    "pricing/amount",
    "pricing/currency",
    "pricing/unit",
    "pricing/unit-kind",
    "delivery/max-duration-sec",
    "queue/auto-accept",
    "queue/max-depth",
    "hybrid",
    "signature"
  ],
  "properties": {
    "schema/v": {
      "const": 1,
      "description": "Schema version."
    },
    "offer/id": {
      "type": "string",
      "minLength": 1,
      "pattern": "^offer:[A-Za-z0-9][A-Za-z0-9:-]*$",
      "description": "Stable identifier of this standing service offer."
    },
    "created-at": {
      "type": "string",
      "format": "date-time",
      "description": "Timestamp when the offer record became auditable."
    },
    "published-at": {
      "type": "string",
      "format": "date-time",
      "description": "Timestamp when the offer was last published to the exchange-visible channel."
    },
    "expires-at": {
      "type": "string",
      "format": "date-time",
      "description": "Timestamp after which the offer should be treated as stale."
    },
    "sequence/no": {
      "type": "integer",
      "minimum": 0,
      "description": "Monotonic per-offer sequence number. Higher values supersede lower ones for the same standing offer identity."
    },
    "provider/node-id": {
      "type": "string",
      "minLength": 1,
      "description": "Serving node hosting this offer."
    },
    "provider/participant-id": {
      "type": "string",
      "minLength": 1,
      "description": "Provider-side accountable subject publishing this offer."
    },
    "service/type": {
      "type": "string",
      "minLength": 1,
      "description": "Marketplace-visible service category such as `text/redaction`, `research/topical`, or `image/generation`."
    },
    "service/description": {
      "type": "string",
      "minLength": 1,
      "description": "Human-readable summary of the offered service."
    },
    "pricing/amount": {
      "type": "integer",
      "minimum": 0,
      "description": "Price in minor units for one billable unit of service. When `pricing/currency = ORC`, the value uses ORC minor units with fixed scale `2`."
    },
    "pricing/currency": {
      "type": "string",
      "minLength": 2,
      "maxLength": 16,
      "description": "Settlement unit or currency symbol, with `ORC` as the current hard-MVP marketplace unit."
    },
    "pricing/unit": {
      "type": "string",
      "minLength": 1,
      "description": "Human-readable billable unit label, for example `1 summary item`, `1800 input characters`, or `1 illustration`."
    },
    "pricing/unit-kind": {
      "type": "string",
      "enum": [
        "per-item",
        "per-character-block",
        "per-request",
        "flat"
      ],
      "description": "Host-computable pricing kind. The host computes total price and hold from explicit order units multiplied by `pricing/amount`; `pricing/unit` remains descriptive only."
    },
    "delivery/max-duration-sec": {
      "type": "integer",
      "minimum": 1,
      "description": "Maximum provider-side promised duration for one accepted order under this standing offer."
    },
    "queue/auto-accept": {
      "type": "boolean",
      "description": "Whether the provider declares automatic acceptance up to the published queue posture."
    },
    "queue/max-depth": {
      "type": "integer",
      "minimum": 0,
      "description": "Maximum queue depth at which the provider still considers the service admissible."
    },
    "queue/current-depth": {
      "type": "integer",
      "minimum": 0,
      "description": "Current queue depth when the offer was published or refreshed."
    },
    "constraints/input": {
      "type": "object",
      "additionalProperties": true,
      "description": "Optional input-side bounded constraints declared by the provider."
    },
    "constraints/output": {
      "type": "object",
      "additionalProperties": true,
      "description": "Optional output-side bounded constraints declared by the provider."
    },
    "hybrid": {
      "type": "boolean",
      "description": "Whether this service involves human intervention beyond pure automated model execution."
    },
    "model-first": {
      "type": "boolean",
      "description": "Whether model-backed processing is intended to happen before human intervention when `hybrid` is true."
    },
    "confirmation/mode": {
      "type": "string",
      "enum": [
        "arbiter-confirmed",
        "self-confirmed",
        "manual-review-only"
      ],
      "description": "Provider-declared preferred confirmation mode intended to map directly into procurement contract confirmation semantics."
    },
    "policy_annotations": {
      "type": "object",
      "additionalProperties": true,
      "description": "Optional marketplace-local or federation-local annotations that do not redefine the core standing-offer semantics."
    },
    "signature": {
      "$ref": "#/$defs/signature"
    }
  },
  "allOf": [
    {
      "if": {
        "properties": {
          "hybrid": {
            "const": false
          }
        },
        "required": [
          "hybrid"
        ]
      },
      "then": {
        "properties": {
          "model-first": {
            "const": false
          }
        }
      }
    }
  ],
  "$defs": {
    "signature": {
      "type": "object",
      "additionalProperties": true,
      "required": [
        "alg",
        "value"
      ],
      "properties": {
        "alg": {
          "type": "string",
          "enum": [
            "ed25519"
          ],
          "description": "Signature algorithm used by the provider-side accountable subject."
        },
        "value": {
          "type": "string",
          "minLength": 1,
          "description": "Serialized signature value."
        }
      }
    }
  }
}