{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "urn:orbiplex:schema:package-capability-contract:v1",
  "title": "Package Capability Contract v1",
  "x-dia-status": "draft",
  "x-dia-basis": [
    "doc/project/40-proposals/093-package-scoped-private-capabilities.md"
  ],
  "description": "The input and output contract of one package capability (P093 §6). It names its schemas as immutable package members by path and digest; the host keeps the members it verified at import and conformance and compiles the schemas offline at activation. `contract/digest` is `sha256:` over the base64url-no-pad JCS v1 bytes of this document. A schema `$ref` resolves only within its document, to a member listed in `refs`, or to a canonical Node schema id; nothing is fetched.",
  "type": "object",
  "additionalProperties": false,
  "required": [
    "schema",
    "schema/v",
    "schema/dialect",
    "input/schema",
    "output/schema"
  ],
  "properties": {
    "schema": {
      "const": "package-capability-contract.v1"
    },
    "schema/v": {
      "const": 1
    },
    "schema/dialect": {
      "const": "https://json-schema.org/draft/2020-12/schema"
    },
    "input/schema": {
      "$ref": "#/$defs/member",
      "description": "The schema every invocation input must satisfy before the admission point."
    },
    "output/schema": {
      "$ref": "#/$defs/member",
      "description": "The schema every provider output must satisfy before it is recorded completed or released."
    },
    "refs": {
      "type": "object",
      "maxProperties": 32,
      "propertyNames": {
        "$ref": "#/$defs/path"
      },
      "additionalProperties": {
        "$ref": "#/$defs/digest"
      },
      "description": "Further package members the two schemas may `$ref`, by path and digest."
    }
  },
  "$defs": {
    "path": {
      "type": "string",
      "minLength": 6,
      "maxLength": 256,
      "pattern": "^(?:[a-z0-9][a-z0-9._-]*/){0,8}[a-z0-9][a-z0-9._-]*\\.json$",
      "description": "A relative package member path: lowercase segments that never start with `.`, so `..` and absolute paths are unrepresentable."
    },
    "digest": {
      "type": "string",
      "pattern": "^sha256:[A-Za-z0-9_-]{43}$",
      "description": "`sha256:` over the base64url-no-pad JCS v1 bytes of the member document."
    },
    "member": {
      "type": "object",
      "additionalProperties": false,
      "required": [
        "path",
        "digest"
      ],
      "properties": {
        "path": {
          "$ref": "#/$defs/path"
        },
        "digest": {
          "$ref": "#/$defs/digest"
        }
      }
    }
  }
}