# Metadata

Create and update user metadata.

## Get User's Private Metadata Item

 - [GET /metadata/{userId}/private/{fieldName}](https://tidepool.redocly.app/reference/metadata.v1/internal/getuserprivatemetadataitem.md): Returns the named item from the user's private metadata collection.

## Get Metadata Collections

 - [GET /metadata/collections](https://tidepool.redocly.app/reference/metadata.v1/metadata/getmetadatacollections.md): Returns list of valid metadata collections.

## Get User Metadata Collection

 - [GET /metadata/{userId}/{collectionName}](https://tidepool.redocly.app/reference/metadata.v1/metadata/getusermetadatacollection.md): Returns the user's metadata collection corresponding to . Each metadata collection is an unbounded JSON object with client-defined fields.

## Update User Metadata Collection

 - [POST /metadata/{userId}/{collectionName}](https://tidepool.redocly.app/reference/metadata.v1/metadata/updateusermetadatacollectionpost.md): Updates the user's metadata collection corresponding to . Each metadata collection is an unbounded JSON object with client-defined fields.

## Update User Metadata Collection

 - [PUT /metadata/{userId}/{collectionName}](https://tidepool.redocly.app/reference/metadata.v1/metadata/updateusermetadatacollectionput.md): Updates the user's metadata collection corresponding to . Each metadata collection is an unbounded JSON object with client-defined fields.

## Get User's Private Metadata Item

 - [GET /metadata/{userId}/private/{fieldName}](https://tidepool.redocly.app/reference/metadata.v1/metadata/getuserprivatemetadataitem.md): Returns the named item from the user's private metadata collection.

## List Users

 - [GET /metadata/users/{userId}/users](https://tidepool.redocly.app/reference/metadata.v1/metadata/listusers.md): List all users who have trustee or trustor access to the user account identified by .