{
  "$schema": "http://json-schema.org/draft-07/schema#",
  "type": "object",
  "properties": {
    "categories": {
      "type": "array",
      "items": {
        "type": "object",
        "properties": {
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          "sections": {
            "type": "array",
            "items": {
              "type": "object",
              "properties": {
                "name": { "type": "string", "minLength": 1, "maxLength": 100 },
                "services": {
                  "type": "array",
                  "items": {
                    "type": "object",
                    "properties": {
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                      "description": { "type": "string", "minLength": 10, "maxLength": 1500 },
                      "url": {
                        "type": "string",
                        "anyOf": [
                          { "pattern": "^https?://" },
                          { "maxLength": 0 }
                        ]
                      },
                      "github": {
                        "type": ["string", "null"],
                        "pattern": "^([a-zA-Z0-9._-]+/[a-zA-Z0-9._-]+|https://github\\.com/.+)$"
                      },
                      "icon": {
                        "type": ["string", "null"],
                        "pattern": "^https?://.+"
                      },
                      "followWith": { "type": ["string", "null"], "minLength": 1, "maxLength": 100 },
                      "securityAudited": { "type": ["boolean", "null"] },
                      "openSource": { "type": ["boolean", "null"] },
                      "acceptsCrypto": { "type": ["boolean", "null"] },
                      "tosdrId": { "type": ["integer", "null"], "minimum": 1 },
                      "iosApp": {
                        "type": ["string", "null"],
                        "pattern": "^https://apps\\.apple\\.com/"
                      },
                      "androidApp": {
                        "type": ["string", "null"],
                        "pattern": "^[a-zA-Z][a-zA-Z0-9_]*(\\.[a-zA-Z][a-zA-Z0-9_]*)+$"
                      },
                      "discordInvite": {
                        "type": ["string", "null"],
                        "pattern": "^(https://discord\\.gg/[a-zA-Z0-9]+|[a-zA-Z0-9]+|)$"
                      },
                      "subreddit": {
                        "type": ["string", "null"],
                        "pattern": "^[a-zA-Z0-9_]+$",
                        "minLength": 1,
                        "maxLength": 50
                      }
                    },
                    "required": ["name", "description", "url"],
                    "additionalProperties": false
                  }
                },
                "intro": { "type": ["string", "null"], "minLength": 1 },
                "notableMentions": {
                  "oneOf": [
                    {
                      "type": "array",
                      "items": {
                        "type": "object",
                        "properties": {
                          "name": { "type": "string", "minLength": 1, "maxLength": 100 },
                          "description": { "type": "string", "minLength": 1 },
                          "url": { "type": "string", "pattern": "^https?://" }
                        },
                        "required": ["name", "url"],
                        "additionalProperties": false
                      }
                    },
                    { "type": "string", "minLength": 1 },
                    { "type": "null" }
                  ]
                },
                "furtherInfo": { "type": ["string", "null"], "minLength": 1 },
                "wordOfWarning": { "type": ["string", "null"], "minLength": 1 },
                "alternativeTo": {
                  "oneOf": [
                    {
                      "type": "array",
                      "items": { "type": "string", "minLength": 1, "maxLength": 100 },
                      "minItems": 1
                    },
                    { "type": "null" }
                  ]
                }
              },
              "required": ["name", "services"],
              "additionalProperties": false
            }
          }
        },
        "required": ["name", "sections"],
        "additionalProperties": false
      }
    }
  },
  "required": ["categories"],
  "additionalProperties": false
}