Meta abilities let you get and set WordPress metadata for any object type — posts (and custom post types), taxonomy terms, and users. Permission checks are enforced per object, so the abilities respect the same access rules as native WordPress.
maxi/bulk-update-meta is a Pro plan ability. It is not available on the Lite plan.
Object types
All meta abilities accept an object_type parameter:
post — applies to posts, pages, and any custom post typeterm — applies to taxonomy terms (categories, tags, and custom taxonomies)user — applies to WordPress users
Key ability examples
Retrieve a single meta value by key, or retrieve all meta for an object by omitting meta_key.
Add a new meta value or update an existing one. If the key does not exist, WordPress creates it. If it already exists, WordPress updates it.
Pro only. Set multiple meta keys across many objects at once. Pass an object_ids array and a meta object with all the keys and values to apply.
maxi/bulk-update-meta also accepts a parent_id input shape for WooCommerce variable products. When you pass parent_id, the ability expands the operation to all variations of that product automatically.
Always pass plain, unserialized values to meta abilities. WordPress handles serialization automatically when it stores the value.Correct:Incorrect — do not pre-serialize:Pre-serializing values causes double serialization, which corrupts the stored data and produces broken reads. Permission model
Meta abilities enforce object-level permission checks in addition to the capability listed in the table above:
- Post reads require the
read_post capability for that specific post.
- Post writes require the
edit_post capability for that specific post.
- User meta reads require
list_users. User meta writes require edit_user.
- Term meta writes require the
manage_terms capability for that taxonomy.
- Term meta reads are open — terms are public taxonomy objects and do not require additional capability.
If the connected WordPress user does not have the required capability for a specific object, the ability returns an error for that object rather than silently skipping it. 
