{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://solid-apps.github.io/schema/app.schema.json",
  "title": "solid-apps catalog manifest",
  "description": "One app.json per application directory. Used to populate the catalog landing page and let LLMs/agents discover what apps exist and which urn:solid types each handles.",
  "type": "object",
  "required": ["name", "description", "entry", "types", "status", "added"],
  "additionalProperties": false,
  "properties": {
    "name": {
      "description": "Display name shown in the catalog.",
      "type": "string",
      "minLength": 1,
      "maxLength": 80
    },
    "description": {
      "description": "One-sentence summary of what the app does.",
      "type": "string",
      "minLength": 1,
      "maxLength": 280
    },
    "entry": {
      "description": "Relative path to the app's HTML entry point (typically ./index.html).",
      "type": "string"
    },
    "types": {
      "description": "urn:solid: types this app reads, writes, or otherwise handles.",
      "type": "array",
      "minItems": 1,
      "items": { "type": "string", "pattern": "^urn:solid:[A-Za-z][A-Za-z0-9_-]*$" },
      "uniqueItems": true
    },
    "screenshot": {
      "description": "Relative or absolute URL of a screenshot for the catalog.",
      "type": "string"
    },
    "icon": {
      "description": "Single-character icon (typically emoji).",
      "type": "string"
    },
    "author": {
      "type": "string"
    },
    "status": {
      "type": "string",
      "enum": ["stable", "experimental", "deprecated"]
    },
    "added": {
      "type": "string",
      "format": "date"
    },
    "updated": {
      "type": "string",
      "format": "date"
    },
    "source": {
      "description": "URL of the app's source repository, if separate.",
      "type": "string",
      "format": "uri"
    }
  }
}