Update the item metadata
This method updates the item_metadata of the specified knowledge store item and returns the item. The platform merges your changes with the existing metadata:
- A key with a value creates or replaces that key.
- A key set to
nulldeletes that key. - A key set to an empty string (
"") or an empty array ([]) is ignored. - A key you omit from the request keeps its current value.
The metadata field of the item does not change. If the merged result contains more than 50 pairs, the request fails.
To replace all item metadata in a single call, use the PUT method of the /knowledge-stores/{knowledge_store_id}/items/{item_id}/item-metadata endpoint instead.
Authentication
Your API key.
You can find your API key on the API Keys page.
Path parameters
Request
The keys to change. Send at least one key. Keys are strings of up to 128 characters. String values can have up to 8192 characters. Values can be a string, a number, a boolean, an array of strings, or null to delete the key. A nested object and an array containing anything other than strings are rejected. An integer must fit in 53 bits (-9007199254740991 to 9007199254740991). Send a wider integer, or an identifier that must be preserved verbatim, as a string.
Response
The processing status of the item. For the meaning of each value, see the Item statuses section on The knowledge store item object page.
System-generated metadata for the source asset. Its asset_type field
always matches the item’s top-level asset_type field.
The custom metadata of the source asset. Keys are strings; each value is a string, a number, a boolean, or an array of strings. The platform updates it when the user-defined metadata of the asset changes. To change it, use the PATCH method of the /assets/{asset_id}/user-metadata endpoint. To set custom metadata for the knowledge store item only, use item_metadata.
The custom metadata of the knowledge store item. Keys are strings; each value is a string, a number, a boolean, or an array of strings. It is separate from the custom metadata of the source asset. A change to the custom metadata of the source asset does not change this field. The same key can have different values in the metadata field and in the item_metadata field. You set it when you create the item or change it with the PATCH or PUT method of the /knowledge-stores/{knowledge_store_id}/items/{item_id}/item-metadata endpoint. This field is absent when no item metadata has been set.
Metadata that the platform extracts from the whole item, as defined by the enrichment configuration of the knowledge store. It contains the properties that have the granularity keyword set to video for a video, or to image for an image. Properties that have the granularity keyword set to shot do not appear in this field. Keys are the property names; each value matches its property definition. A property with no value is omitted. The field is present only when the item is ready and contains at least one value.