{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://npmjs.com/schemas/npm/hook-event.json",
  "title": "npm Hook Event Payload",
  "description": "The webhook event payload delivered by npm hooks when registry changes occur. Each payload is signed with HMAC SHA-256 using the shared secret configured on the hook subscription.",
  "type": "object",
  "required": ["event", "name", "type", "time"],
  "properties": {
    "event": {
      "type": "string",
      "description": "The type of registry event that occurred.",
      "enum": [
        "package:change",
        "package:publish",
        "package:unpublish",
        "package:owner",
        "package:dist-tag",
        "package:deprecate",
        "package:star"
      ]
    },
    "name": {
      "type": "string",
      "description": "The name of the package associated with the event."
    },
    "type": {
      "type": "string",
      "description": "The type of entity that triggered the hook subscription.",
      "enum": ["package", "scope", "owner"]
    },
    "version": {
      "type": "string",
      "description": "The version of the package associated with the event, if applicable."
    },
    "hookOwner": {
      "type": "object",
      "description": "The npm user who owns the hook subscription.",
      "properties": {
        "username": {
          "type": "string",
          "description": "The npm username of the hook owner."
        }
      }
    },
    "payload": {
      "type": "object",
      "description": "Event-specific payload data containing details about what changed."
    },
    "change": {
      "type": "object",
      "description": "Details about the specific change that occurred.",
      "properties": {
        "version": {
          "type": "string",
          "description": "The affected version, if applicable."
        },
        "dist-tag": {
          "type": "string",
          "description": "The affected dist-tag, if applicable."
        },
        "maintainer": {
          "type": "string",
          "description": "The affected maintainer username, if applicable."
        }
      }
    },
    "time": {
      "type": "string",
      "format": "date-time",
      "description": "The ISO 8601 timestamp of when the event occurred."
    }
  }
}