Supported Metadata Types

Metadata is structured information about your files that enables powerful filtering, organization, and search capabilities. This page covers what types of metadata you can store and how to structure them effectively.

Looking for filtering syntax? This page covers metadata types and structure. For filtering operations and syntax, see Metadata Filtering.

Understanding Metadata

File-Level: Metadata attached to entire files
Inheritance: Chunks inherit metadata from their parent file
Filtering: Use metadata to narrow search results (learn more)
Content Organization: Structure content for easier discovery

Metadata Types

String Values

Best For: Categories, names, tags, status values

Filtering: Equality, inequality, pattern match (like, not like)

Numeric Values

Best For: Scores, versions, counts, measurements

Filtering: Comparisons (>, <, >=, <=)

Boolean Values

Best For: Flags, permissions, feature toggles

Filtering: True/false conditions

Date/Time Values

Best For: Timestamps, deadlines, publishing dates

Filtering: Comparisons (>, <, >=, <=)

Format: ISO 8601 recommended

Array/List Values

Best For: Multiple values, collections

Supported File Types

File formats supported by Mixedbread Vector Stores for ingestion and search.

Learn how to search your Vector Store with semantic queries, configuration options, and advanced filtering capabilities.

Last updated: August 29, 2025