{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://spica.unil.ch/schemas/project.json",
  "title": "SPICA Project",
  "description": "A SPICA atlas project and its experimental metadata.",
  "type": "object",
  "properties": {
    "id": {
      "type": "integer",
      "description": "Internal project identifier."
    },
    "public_id": {
      "type": "integer",
      "description": "Public-facing project identifier."
    },
    "key": {
      "type": "string",
      "description": "Short alphanumeric project key."
    },
    "name": {
      "type": "string",
      "description": "Human-readable project name."
    },
    "description": {
      "type": "string",
      "description": "Description of the project / experiment."
    },
    "ref_id": {
      "type": "integer",
      "description": "Reference atlas identifier the project belongs to."
    },
    "project_attrs": {
      "type": "object",
      "description": "Variable key-value experimental attributes.",
      "additionalProperties": {
        "type": "string"
      }
    },
    "nber_samples": {
      "type": "integer",
      "description": "Number of samples in the project."
    },
    "created_at": {
      "type": "string",
      "format": "date-time",
      "description": "Creation timestamp (ISO 8601)."
    },
    "updated_at": {
      "type": "string",
      "format": "date-time",
      "description": "Last update timestamp (ISO 8601)."
    },
    "url": {
      "type": "string",
      "format": "uri",
      "description": "Canonical URL to the project JSON resource."
    }
  },
  "required": ["id", "name", "ref_id", "url"]
}