Find registry items

Find registries, collections, and artifact versions interactively with the W&B Registry or programmatically with the W&B Python SDK. Only items that you have permission to view appear in the search results.

The syntax and available operators you can use to query W&B Registry are similar, but not identical, to MongoDB queries.

Search for registry items

Use the search bar on the W&B Registry homepage to find collections and registries by name. Use the advanced search to find registries, collections, or artifact versions with specific attributes such as name, tag, description, creation date, and more.

Basic search

Search for registries and collections from the W&B Registry homepage:

Navigate to the W&B Registry.
Enter a search term in the search bar at the top of the page.
Press Enter to search.

Advanced search

Use the advanced search to search for registries, collections, or artifact versions. Use filters to search for specific registry items based on attributes such as name, tag, description, creation date, and more.

Navigate to the W&B Registry.
Click Advanced at the top of the homepage.
Select Registries, Collections, or Versions button.
Click Filters.
From left to right, select the attribute you want to filter by, the operator, and the value. You can add multiple filters to narrow down your search results.
Press Enter to apply the filter.

Query registry items

Use wandb.Api().registries() and query predicates to filter registries, collections, and artifact versions. A query predicate is a condition that specifies the criteria that returned items must meet. To create a query predicate, use a JSON-like dictionary that consists of query name, one or more operators, and values. The following code snippet shows the general structure of a query predicate:

{
    "query_name": {
        "operator": value
    }
}

The following sections describe the available registry query names, supported operators, and example queries.

Filterable fields

The following table lists query names you can use based on the type of item you want to filter:

Item type	Query name
Registries	`name`, `description`, `created_at`, `updated_at`
Collections	`name`, `tag`, `description`, `created_at`, `updated_at`
Versions	`tag`, `alias`, `created_at`, `updated_at`, `metadata`

Supported operators

Use operators within a query predicate to express the comparison or logical relationship between a field and its value. W&B supports the following comparison and logical operators for filtering registry items.

Comparison operators

Operator	Description
`$eq`	Equal to
`$ne`	Not equal to
`$gt`	Greater than
`$gte`	Greater than or equal to
`$lt`	Less than
`$lte`	Less than or equal to

Logical operators

Operator	Description
`$and`	Performs AND logic to one or more conditions
`$or`	Performs OR logic to one or more conditions
`$nor`	Performs NOR logic to one or more conditions
`$not`	Performs NOT logic to a condition

Other operators

Operator	Description
`$regex`	Regular expression pattern matching
`$exists`	Field exists or doesn’t exist
`$contains`	String contains value

Example queries

The following code examples demonstrate some common search scenarios. To use the wandb.Api().registries() method, first import the W&B Python SDK (wandb) library so that the API client is available in your environment:

import wandb

# (Optional) Create an instance of the wandb.Api() class for readability
api = wandb.Api()

Filter all registries that contain the string model:

# Filter all registries that contain the string `model`
registry_filters = {
    "name": {"$regex": "model"}
}

# Returns an iterable of all registries that match the filters
registries = api.registries(filter=registry_filters)

Filter all collections, independent of registry, that contain the string yolo in the collection name:

# Filter all collections, independent of registry, that 
# contain the string `yolo` in the collection name
collection_filters = {
    "name": {"$regex": "yolo"}
}

# Returns an iterable of all collections that match the filters
collections = api.registries().collections(filter=collection_filters)

Filter all collections, independent of registry, that contain the string yolo in the collection name and have cnn as a tag:

# Filter all collections, independent of registry, that contain the
# string `yolo` in the collection name and have `cnn` as a tag
collection_filters = {
    "name": {"$regex": "yolo"},
    "tag": "cnn"
}

# Returns an iterable of all collections that match the filters
collections = api.registries().collections(filter=collection_filters)

Find all artifact versions that contain the string model and have either the tag image-classification or the production alias:

# Find all artifact versions that contain the string `model` and 
# have either the tag `image-classification` or the `production` alias
registry_filters = {
    "name": {"$regex": "model"}
}

# Use logical $or operator to filter artifact versions
version_filters = {
    "$or": [
        {"tag": "image-classification"},
        {"alias": "production"}
    ]
}

# Returns an iterable of all artifact versions that match the filters
artifacts = api.registries(filter=registry_filters).collections().versions(filter=version_filters)

Each item in the artifacts iterable is an instance of the Artifact class. This means that you can access each artifact’s attributes, such as name, collection, aliases, tags, and created_at:

for art in artifacts:
    print(f"artifact name: {art.name}")
    print(f"collection artifact belongs to: {art.collection.name}")
    print(f"artifact aliases: {art.aliases}")
    print(f"tags attached to artifact: {art.tags}")
    print(f"artifact created at: {art.created_at}\n")

For more information about an artifact object’s attributes, see Artifact. Filter all artifact versions, independent of registry or collection, created between 2024-01-08 and 2025-03-04 at 13:10 UTC:

# Find all artifact versions created between 2024-01-08 and 2025-03-04 at 13:10 UTC.

artifact_filters = {
    "alias": "latest",
    "created_at": {"$gte": "2024-01-08", "$lte": "2025-03-04 13:10:00"},
}

# Returns an iterable of all artifact versions that match the filters
artifacts = api.registries().collections().versions(filter=artifact_filters)

Specify the date and time in YYYY-MM-DD HH:MM:SS format for created_at and updated_at queries. You can omit the hours, minutes, and seconds if you want to filter by date only.

Guides

Integrations

Reference

Search for registry items

Basic search

Advanced search

Query registry items

Filterable fields

Supported operators

Comparison operators

Logical operators

Other operators

Example queries

​Search for registry items

​Basic search

​Advanced search

​Query registry items

​Filterable fields

​Supported operators

​Comparison operators

​Logical operators

​Other operators

​Example queries

Search for registry items

Basic search

Advanced search

Query registry items

Filterable fields

Supported operators

Comparison operators

Logical operators

Other operators

Example queries