Metadata allows you to store and retrieve additional data about any Flatfile resource without exposing it to end users. This key-value object provides a flexible way to attach custom information, track state, store references, or add contextual data to your resources.

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Universal Usage

Metadata can be added during resource creation or updated later using the Flatfile API. The metadata object accepts any valid JSON data and is accessible in all listeners and webhooks. 
await api.spaces.update(spaceId, {
  metadata: {
    userId: "user123",
    companyId: "company456",
    customField: "any value"
  }
});

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Resource Types

Environment - Store deployment details, version info, or environment state
Space - Track user IDs, company information, or session data
Workbook - Add expiration dates, processing flags, or workflow state
Record - Store computed values, external IDs, or transformation flags
Field - Define formatting rules, validation context, or display preferences