{
  "$id": "https://schemas.mapi.dev/v1/api-MediaKeySummary.json",
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "description": "One media series (key + labels) of a run: how many items and which steps.",
  "examples": [
    {
      "count": 5,
      "first_step": 0,
      "key": "samples",
      "kind": "image",
      "labels": {
        "split": "val"
      },
      "last_created_at": "2026-10-15T09:30:00Z",
      "last_step": 4
    }
  ],
  "properties": {
    "count": {
      "minimum": 0,
      "title": "Count",
      "type": "integer"
    },
    "first_step": {
      "anyOf": [
        {
          "type": "integer"
        },
        {
          "type": "null"
        }
      ],
      "default": null,
      "title": "First Step"
    },
    "key": {
      "pattern": "^[a-z][a-z0-9_]{0,63}$",
      "title": "Key",
      "type": "string"
    },
    "kind": {
      "enum": [
        "image",
        "table"
      ],
      "title": "Kind",
      "type": "string"
    },
    "labels": {
      "additionalProperties": {
        "type": "string"
      },
      "title": "Labels",
      "type": "object"
    },
    "last_created_at": {
      "format": "date-time",
      "title": "Last Created At",
      "type": "string"
    },
    "last_step": {
      "anyOf": [
        {
          "type": "integer"
        },
        {
          "type": "null"
        }
      ],
      "default": null,
      "title": "Last Step"
    }
  },
  "required": [
    "key",
    "kind",
    "count",
    "last_created_at"
  ],
  "title": "MediaKeySummary",
  "type": "object",
  "x-mapi-contract-version": "0.2"
}