diff --git a/src/lib/client/server.js b/src/lib/client/server.js
index 292ed5d..91dcd48 100644
--- a/src/lib/client/server.js
+++ b/src/lib/client/server.js
@@ -16,8 +16,9 @@ const server_types = {
 };
 
 export const capabilities = {
-    MARKDOWN_CONTENT: "mdcontent",
+    MARKDOWN_CONTENT: "markdown_content",
     REACTIONS: "reactions",
+    FOREIGN_REACTIONS: "foreign_reactions",
 };
 
 // if server is falsy, assume user has not begun the login process.
@@ -118,6 +119,7 @@ function getCapabilities(type) {
             break;
         case server_types.CHUCKYA:
             c.push(capabilities.REACTIONS);
+            c.push(capabilities.FOREIGN_REACTIONS);
             break;
         case server_types.FIREFISH:
             c.push(capabilities.REACTIONS);
diff --git a/src/lib/ui/post/ActionBar.svelte b/src/lib/ui/post/ActionBar.svelte
index 096cd1d..8f3e490 100644
--- a/src/lib/ui/post/ActionBar.svelte
+++ b/src/lib/ui/post/ActionBar.svelte
@@ -11,7 +11,6 @@
     import RepostIcon from '../../../img/icons/repost.svg';
     import FavouriteIcon from '../../../img/icons/like.svg';
     import FavouriteIconFill from '../../../img/icons/like_fill.svg';
-    import ReactIcon from '../../../img/icons/react.svg';
     import QuoteIcon from '../../../img/icons/quote.svg';
     import MoreIcon from '../../../img/icons/more.svg';
 
@@ -45,23 +44,6 @@
         post.favourite_count = data.favourites_count;
         if (data.reactions) post.reactions = parseReactions(data.reactions);
     }
-
-    async function toggleReaction(reaction) {
-        if (reaction.name.includes('@')) return;
-
-        let data;
-        if (reaction.me)
-            data = await api.unreactPost(get(server).host, get(app).token, post.id, reaction.name);
-        else
-            data = await api.reactPost(get(server).host, get(app).token, post.id, reaction.name);
-        if (!data) {
-            console.error(`Failed to favourite post ${post.id}`);
-            return;
-        }
-        post.favourited = data.favourited;
-        post.favourite_count = data.favourites_count;
-        if (data.reactions) post.reactions = parseReactions(data.reactions);
-    }
 </script>
 
 <div class="post-actions" aria-label="Post actions" on:mouseup|stopPropagation on:keydown|stopPropagation>
diff --git a/src/lib/ui/post/ReactionBar.svelte b/src/lib/ui/post/ReactionBar.svelte
index 0e7e4aa..9e907e6 100644
--- a/src/lib/ui/post/ReactionBar.svelte
+++ b/src/lib/ui/post/ReactionBar.svelte
@@ -1,8 +1,35 @@
 <script>
+    import * as api from '$lib/api.js';
+    import { server, capabilities } from '$lib/client/server.js';
+    import { app } from '$lib/client/app.js';
+    import { get } from 'svelte/store';
+    import { parseReactions } from '$lib/post.js';
+
     import ReactionButton from './ReactionButton.svelte';
     import ReactIcon from '../../../img/icons/react.svg';
 
     export let post;
+
+    async function toggleReaction(reaction) {
+        if (
+            reaction.name.includes('@') &&
+            !$server.capabilities.includes(capabilities.FOREIGN_REACTIONS)
+        ) return;
+
+        let data;
+        if (reaction.me)
+            data = await api.unreactPost(get(server).host, get(app).token, post.id, reaction.name);
+        else
+            data = await api.reactPost(get(server).host, get(app).token, post.id, reaction.name);
+        if (!data) {
+            console.error(`Failed to favourite post ${post.id}`);
+            return;
+        }
+
+        post.favourited = data.favourited;
+        post.favourite_count = data.favourites_count;
+        if (data.reactions) post.reactions = parseReactions(data.reactions);
+    }
 </script>
 
 <div class="post-reactions" aria-label="Reactions" on:mouseup|stopPropagation on:keydown|stopPropagation>
@@ -12,7 +39,7 @@
                 on:click={() => toggleReaction(reaction)}
                 bind:active={reaction.me}
                 bind:count={reaction.count}
-                disabled={reaction.name.includes('@')}
+                disabled={reaction.name.includes('@') && !$server.capabilities.includes(capabilities.FOREIGN_REACTIONS)}
                 title={reaction.name}
                 label="">
                 {#if reaction.url}