diff --git a/app/controllers/ai_tags_controller.rb b/app/controllers/ai_tags_controller.rb
index ed028dcdb..b29c0460c 100644
--- a/app/controllers/ai_tags_controller.rb
+++ b/app/controllers/ai_tags_controller.rb
@@ -12,4 +12,26 @@ class AITagsController < ApplicationController
 
     respond_with(@ai_tags)
   end
+
+  # Add the tag to the post, or remove the tag from the post.
+  def tag
+    @ai_tag = authorize AITag.find_by!(media_asset_id: params[:media_asset_id], tag_id: params[:tag_id])
+    @post = @ai_tag.post
+
+    if params[:mode] == "remove"
+      @post.remove_tag(@ai_tag.tag.name)
+      flash.now[:notice] = DText.format_text("Post ##{@post.id}: Removed [[#{@ai_tag.tag.pretty_name}]].", inline: true).html_safe
+    else
+      @post.add_tag(@ai_tag.tag.name)
+      flash.now[:notice] = DText.format_text("Post ##{@post.id}: Added [[#{@ai_tag.tag.pretty_name}]].", inline: true).html_safe
+    end
+
+    @post.save
+    if @post.invalid?
+      flash.now[:notice] = DText.format_text("Couldn't update post ##{@post.id}: #{@post.errors.full_messages.join("; ")}", inline: true).html_safe
+    end
+
+    @preview_size = params[:size].presence || cookies[:post_preview_size].presence || PostGalleryComponent::DEFAULT_SIZE
+    respond_with(@ai_tag)
+  end
 end
diff --git a/app/javascript/src/styles/base/040_colors.scss b/app/javascript/src/styles/base/040_colors.scss
index 23e5c9b30..5e474c343 100644
--- a/app/javascript/src/styles/base/040_colors.scss
+++ b/app/javascript/src/styles/base/040_colors.scss
@@ -142,7 +142,9 @@ html, body[data-current-user-theme="light"] {
   --button-primary-background-color: var(--link-color);
   --button-primary-hover-background-color: var(--link-hover-color);
   --button-primary-disabled-color: var(--grey-5);
+
   --button-outline-primary-color: var(--link-color);
+  --button-outline-danger-color: var(--red-5);
 
   --quick-search-form-background: var(--body-background-color);
 
@@ -360,7 +362,9 @@ html, body[data-current-user-theme="light"] {
   --button-primary-background-color: var(--link-color);
   --button-primary-hover-background-color: var(--link-hover-color);
   --button-primary-disabled-color: var(--grey-4);
+
   --button-outline-primary-color: var(--azure-4);
+  --button-outline-danger-color: var(--red-4);
 
   --quick-search-form-background: var(--grey-9);
 
diff --git a/app/javascript/src/styles/common/buttons.scss b/app/javascript/src/styles/common/buttons.scss
index 4850815ab..8d6348683 100644
--- a/app/javascript/src/styles/common/buttons.scss
+++ b/app/javascript/src/styles/common/buttons.scss
@@ -84,6 +84,27 @@ a, button, input[type="submit"] {
     }
   }
 
+  /* An outlined red button. */
+  &.button-outline-danger {
+    @extend %button;
+
+    color: var(--button-outline-danger-color);
+    background-color: transparent;
+    border: 1px solid var(--button-outline-danger-color);
+
+    transition: background-color 250ms cubic-bezier(0.4, 0, 0.2, 1) 0ms, border 250ms cubic-bezier(0.4, 0, 0.2, 1) 0ms;
+
+    &:hover:not([disabled]) {
+      color: var(--inverse-text-color);
+      background-color: var(--button-outline-danger-color);
+    }
+
+    &[disabled] {
+      color: var(--button-primary-disabled-color);
+      border: 1px solid var(--button-primary-disabled-color);
+    }
+  }
+
   /* A small button. */
   &.button-sm {
     padding: 0.25em 1em;
diff --git a/app/javascript/src/styles/common/utilities.scss b/app/javascript/src/styles/common/utilities.scss
index 79686c1b5..3be0ac551 100644
--- a/app/javascript/src/styles/common/utilities.scss
+++ b/app/javascript/src/styles/common/utilities.scss
@@ -152,6 +152,8 @@ $spacer: 0.25rem; /* 4px */
 .h-8    { height: 8  * $spacer; }
 .h-10   { height: 10 * $spacer; }
 .h-12   { height: 12 * $spacer; }
+.h-16   { height: 16 * $spacer; }
+.h-full { height: 100%; }
 .h-150px { height: 150px; }
 .h-180px { height: 180px; }
 .h-225px { height: 225px; }
@@ -194,6 +196,10 @@ $spacer: 0.25rem; /* 4px */
 
 .justify-items-center { justify-items: center; }
 .justify-center { justify-content: center; }
+.justify-between { justify-content: space-between; }
+.justify-end { justify-content: flex-end; }
+
+.self-start { align-self: flex-start; }
 
 .float-right { float: right; }
 
diff --git a/app/models/ai_tag.rb b/app/models/ai_tag.rb
index 90ad4ea97..ccf487704 100644
--- a/app/models/ai_tag.rb
+++ b/app/models/ai_tag.rb
@@ -40,7 +40,8 @@ class AITag < ApplicationRecord
     order(media_asset_id: :desc, tag_id: :asc)
   end
 
-  def correct?
+  # True if the AI tag is present on the post; false if the AI tag is not on the post, or the asset isn't a post yet.
+  def post_tagged?
     if post.nil?
       false
     elsif tag.name =~ /\Arating:(.)\z/
diff --git a/app/policies/ai_tag_policy.rb b/app/policies/ai_tag_policy.rb
index debd7d4fd..6995e93d4 100644
--- a/app/policies/ai_tag_policy.rb
+++ b/app/policies/ai_tag_policy.rb
@@ -4,4 +4,8 @@ class AITagPolicy < ApplicationPolicy
   def index?
     true
   end
+
+  def tag?
+    unbanned? && record.post.present? && policy(record.post).update?
+  end
 end
diff --git a/app/views/ai_tags/_preview.html.erb b/app/views/ai_tags/_preview.html.erb
index b4f08cdeb..b55eee7e4 100644
--- a/app/views/ai_tags/_preview.html.erb
+++ b/app/views/ai_tags/_preview.html.erb
@@ -1,14 +1,27 @@
-<%= render(MediaAssetPreviewComponent.new(media_asset: media_asset, size: size, link_target: media_asset.post || media_asset, html: { **data_attributes_for(media_asset) })) do |preview| %>
+<%= render(MediaAssetPreviewComponent.new(media_asset: media_asset, size: size, link_target: media_asset.post || media_asset, classes: "flex flex-col items-center w-full h-full border rounded pb-2", html: { "data-tag-id": ai_tag.tag_id, **data_attributes_for(media_asset) })) do |preview| %>
   <% preview.footer do %>
-    <div class="text-center text-xs h-8">
-      <% if media_asset.post.present? %>
-        <%= link_to "post ##{media_asset.post.id}", media_asset.post %>
-      <% end %>
+    <div class="text-center text-xs flex flex-col px-2 h-full justify-end">
+      <div class="mb-2">
+        <% if media_asset.post.present? %>
+          <div>
+            <%= link_to "post ##{media_asset.post.id}", media_asset.post %>
+            <%= link_to "»", ai_tags_path(search: search_params.merge(media_asset_id: ai_tag.media_asset_id)) %>
+          </div>
+        <% end %>
 
-      <div>
-        <%= link_to ai_tag.tag.pretty_name, ai_tags_path(search: { tag_name: ai_tag.tag.name, **params[:search].except(:tag_name) }), class: "tag-type-#{ai_tag.tag.category}", "data-tag-name": ai_tag.tag.name %>
-        <%= link_to "#{ai_tag.score}%", ai_tags_path(search: { tag_name: ai_tag.tag.name, score: ">=#{ai_tag.score}", **params[:search].except(:tag_name, :score) }), class: "tag-type-#{ai_tag.tag.category}", "data-tag-name": ai_tag.tag.name %>
+        <div class="leading-none">
+          <%= link_to ai_tag.tag.pretty_name, ai_tags_path(search: search_params.merge(tag_name: ai_tag.tag.name)), class: "tag-type-#{ai_tag.tag.category}", "data-tag-name": ai_tag.tag.name %>
+          <%= link_to "#{ai_tag.score}%", ai_tags_path(search: search_params.merge(tag_name: ai_tag.tag.name, score: ">=#{ai_tag.score}")), class: "tag-type-#{ai_tag.tag.category}", "data-tag-name": ai_tag.tag.name %>
+        </div>
       </div>
+
+      <% if ai_tag.post.nil? %>
+        <%= button_to "Add", nil, class: "button-primary button-sm", disabled: true %>
+      <% elsif ai_tag.post_tagged? %>
+        <%= button_to "Remove", tag_ai_tag_path(media_asset_id: ai_tag.media_asset, tag_id: ai_tag.tag), remote: true, method: :put, params: { mode: "remove" }, class: "button-outline-danger button-sm" %>
+      <% else %>
+        <%= button_to "Add", tag_ai_tag_path(media_asset_id: ai_tag.media_asset, tag_id: ai_tag.tag), remote: true, method: :put, params: { mode: "add" }, class: "button-primary button-sm" %>
+      <% end %>
     </div>
   <% end %>
 <% end %>
diff --git a/app/views/ai_tags/_table.html.erb b/app/views/ai_tags/_table.html.erb
index 42e33e0ce..e13b8d146 100644
--- a/app/views/ai_tags/_table.html.erb
+++ b/app/views/ai_tags/_table.html.erb
@@ -18,7 +18,7 @@
     <%= ai_tag.score %>%
   <% end %>
 
-  <% t.column "Present?" do |ai_tag| %>
-    <%= "Yes" if ai_tag.correct? %>
+  <% t.column "Tagged?" do |ai_tag| %>
+    <%= "Yes" if ai_tag.post_tagged? %>
   <% end %>
 <% end %>
diff --git a/app/views/ai_tags/tag.js.erb b/app/views/ai_tags/tag.js.erb
new file mode 100644
index 000000000..bb6bdc63c
--- /dev/null
+++ b/app/views/ai_tags/tag.js.erb
@@ -0,0 +1,7 @@
+$(function() {
+  let $el = $(".media-asset-preview[data-id=<%= @ai_tag.media_asset_id %>][data-tag-id=<%= @ai_tag.tag_id %>]").get(0);
+  let html = "<%= j render("ai_tags/preview", ai_tag: @ai_tag, media_asset: @ai_tag.media_asset, size: @preview_size) %>";
+  morphdom($el, html);
+
+  Danbooru.Utility.notice("<%= j flash[:notice] %>");
+});
diff --git a/config/routes.rb b/config/routes.rb
index 0699f57d2..4a352a6fb 100644
--- a/config/routes.rb
+++ b/config/routes.rb
@@ -158,7 +158,10 @@ Rails.application.routes.draw do
   end
   resources :media_assets, only: [:index, :show]
   resources :media_metadata, only: [:index]
+
   resources :ai_tags, only: [:index]
+  put "/ai_tags/:media_asset_id/:tag_id/tag", to: "ai_tags#tag", as: "tag_ai_tag"
+
   resources :mod_actions
   resources :moderation_reports, only: [:new, :create, :index, :show, :update]
   resources :modqueue, only: [:index]