objInfo.Expires = t.UTC()
		}
	}

	// Extract etag from metadata.
	objInfo.ETag = extractETag(fi.Metadata)

	// Add user tags to the object info
	tags := fi.Metadata[xhttp.AmzObjectTagging]
	if len(tags) != 0 {
		objInfo.UserTags = tags
	}

	// Add replication status to the object info
	objInfo.ReplicationStatusInternal = fi.ReplicationState.ReplicationStatusInternal

	}

	otags := &objectTagging{
		TagSet: &ObjectTagSet{},
	}

	var list []tags.Tag
	for k, v := range ot.ToMap() {
		list = append(list, tags.Tag{
			Key:   k,
			Value: v,
		})
	}
	// Always return in sorted order for tags.
	sort.Slice(list, func(i, j int) bool {
		return list[i].Key < list[j].Key
	})
	otags.TagSet.Tags = list

/// tip

You don't have to add metadata for all the tags that you use.

///

### Use your tags { #use-your-tags }

Use the `tags` parameter with your *path operations* (and `APIRouter`s) to assign them to different tags:

{* ../../docs_src/metadata/tutorial004.py hl[21,26] *}

/// info

Read more about tags in [Path Operation Configuration](path-operation-configuration.md#tags){.internal-link target=_blank}.

///

## Documentation Tags - OpenAPI { #documentation-tags-openapi }

To add tags to your *path operations*, and group them in the docs UI, read the docs for [Tutorial - Path Operation Configurations - Tags](../tutorial/path-operation-configuration.md#tags){.internal-link target=_blank}.

**FastAPI** provides the same `starlette.status` as `fastapi.status` just as a convenience for you, the developer. But it comes directly from Starlette.

///

## Tags { #tags }

You can add tags to your *path operation*, pass the parameter `tags` with a `list` of `str` (commonly just one `str`):

{* ../../docs_src/path_operation_configuration/tutorial002_py310.py hl[15,20,25] *}

	}

	// Set tag count if object has tags
	if len(objInfo.UserTags) > 0 {
		tags, _ := tags.ParseObjectTags(objInfo.UserTags)
		if tags != nil && tags.Count() > 0 {
			w.Header()[xhttp.AmzTagCount] = []string{strconv.Itoa(tags.Count())}
			if opts.Tagging {
				// This is MinIO only extension to return back tags along with the count.
				w.Header()[xhttp.AmzObjectTagging] = []string{objInfo.UserTags}

      tag: T?,
    ): Builder =
      apply {
        if (tag == null) {
          if (tags.isNotEmpty()) {
            (tags as MutableMap).remove(type)
          }
        } else {
          val mutableTags =
            when {
              tags.isEmpty() -> mutableMapOf<KClass<*>, Any>().also { tags = it }
              else -> tags as MutableMap<KClass<*>, Any>
            }
          mutableTags[type] = type.cast(tag)

		}

		if len(r.Flags.Filter.Tags) > 0 {
			// Only parse object tags if tags filter is specified.
			tagMap := map[string]string{}
			tagStr := info.Metadata[xhttp.AmzObjectTagging]
			if len(tagStr) != 0 {
				t, err := tags.ParseObjectTags(tagStr)
				if err != nil {
					return false
				}
				tagMap = t.ToMap()
			}

			for _, kv := range r.Flags.Filter.Tags {
				for t, v := range tagMap {

### Add some custom `tags`, `responses`, and `dependencies` { #add-some-custom-tags-responses-and-dependencies }

We are not adding the prefix `/items` nor the `tags=["items"]` to each *path operation* because we added them to the `APIRouter`.

<img src="/img/tutorial/generate-clients/image05.png">

## FastAPI App with Tags { #fastapi-app-with-tags }

In many cases, your FastAPI app will be bigger, and you will probably use tags to separate different groups of *path operations*.

For example, you could have a section for **items** and another section for **users**, and they could be separated by tags:

{* ../../docs_src/generate_clients/tutorial002_py39.py hl[21,26,34] *}