Previous value: -"YouTube overrides. title sets the video title; thumbnail applies to long-form videos only."New value: +"YouTube overrides. title sets the video title; thumbnail sets a custom thumbnail (Shorts and long-form)."

Previous value: -"Media ID of an uploaded image to use as the video thumbnail. Upload the image first (upload_media), then pass its ID here. Regular/long-form videos only — YouTube ignores custom thumbnails on Shorts. The channel must be verified; image should be JPEG/PNG, 1280x720, under 2MB. A thumbnail that fails to apply won't fail the post."New value: +"Media ID of an uploaded image to use as the video thumbnail. Upload the image first (upload_media), then pass its ID here. Works on Shorts and long-form videos. The channel must be verified; image should be JPEG/PNG, 1280x720, under 2MB. A thumbnail that fails to apply won't fail the post."

Previous value: -"Turns the post into a multi-post thread: each string is published as a reply to the one before it, in order, under the main post. Text only, up to 25 entries, each trimmed to 500 chars. Links are allowed in thread entries. If an entry fails the chain stops there; the main post still publishes."New value: +"Turns the post into a multi-post thread: each entry is published as a reply to the one before it, in order, under the main post. An entry is a string, or { text, media } to attach media IDs (up to 20 images or videos) to that post. Up to 25 entries, each trimmed to 500 chars. Links are allowed in thread entries. If an entry fails the chain stops there; the main post still publishes."

Added value: +[
+  {
+    "type": "string"
+  },
+  {
+    "additionalProperties": false,
+    "properties": {
+      "media": {
+        "description": "Media IDs for this post: up to 20 images or videos (2+ post as a carousel).",
+        "items": {
+          "type": "string"
+        },
+        "maxItems": 20,
+        "type": "array"
+      },
+      "text": {
+        "type": "string"
+      }
+    },
+    "type": "object"
+  }
+]

Removed value: -"string"

Previous value: -"Turns the post into a multi-post thread: each string is published as a reply to the one before it, in order, under the main post. Text only, up to 25 entries, each trimmed to 280 chars (25,000 for X Premium accounts). Links are allowed in thread entries. If an entry fails the chain stops there; the main post still publishes."New value: +"Turns the post into a multi-post thread: each entry is published as a reply to the one before it, in order, under the main post. An entry is a string, or { text, media } to attach media IDs (up to 4 images or 1 video) to that tweet. Up to 25 entries, each trimmed to 280 chars (25,000 for X Premium accounts). Links are allowed in thread entries. If an entry fails the chain stops there; the main post still publishes."

Added value: +[
+  {
+    "type": "string"
+  },
+  {
+    "additionalProperties": false,
+    "properties": {
+      "media": {
+        "description": "Media IDs for this tweet: up to 4 images, or 1 video.",
+        "items": {
+          "type": "string"
+        },
+        "maxItems": 4,
+        "type": "array"
+      },
+      "text": {
+        "type": "string"
+      }
+    },
+    "type": "object"
+  }
+]

Removed value: -"string"

Previous value: -"Reels only. Attach a track from Instagram's music library (or an original sound) to the reel: an audio_id from search_instagram_audio. ONLY works for Instagram accounts connected through Facebook login (supports_instagram_music: true in list_social_accounts); accounts connected with Instagram login are rejected with a clear error, because Meta only offers music on the Facebook-login API. Ignored for photos, carousels and stories. Reels with music cannot be previewed before they publish."New value: +"Reels only. Attach a track from Instagram's music library (or an original sound) to the reel: an audio_id from search_instagram_audio. ONLY works for Instagram accounts connected through Facebook login (supports_instagram_music: true in list_social_accounts); accounts connected with Instagram login are rejected with a clear error, because Meta only offers music on the Facebook-login API. Reels only (exactly one video): photos and carousels/slideshows are rejected, because Meta does not allow music on them through the API. For a slideshow with music, turn the slides into one video and post it as a reel. Ignored for stories. Reels with music cannot be previewed before they publish."

Added value: +{
+  "description": "Reels only. Attach a track from Instagram's music library (or an original sound) to the reel: an audio_id from search_instagram_audio. ONLY works for Instagram accounts connected through Facebook login (supports_instagram_music: true in list_social_accounts); accounts connected with Instagram login are rejected with a clear error, because Meta only offers music on the Facebook-login API. Ignored for photos, carousels and stories. Reels with music cannot be previewed before they publish.",
+  "type": "string"
+}

Added value: +{
+  "description": "Volume of the audio_id track, 0-100 (default 100). Only with audio_id.",
+  "maximum": 100,
+  "minimum": 0,
+  "type": "integer"
+}

Added value: +{
+  "description": "Volume of the video's own sound under the track, 0-100 (default 100). 0 = music only. Only with audio_id.",
+  "maximum": 100,
+  "minimum": 0,
+  "type": "integer"
+}

Previous value: -"Facebook overrides. Supports feed posts, Page Stories (placement), and first_comment."New value: +"Facebook overrides. Supports feed posts, Page Stories (placement), first_comment and a custom video thumbnail."

Added value: +{
+  "description": "Media ID of an uploaded image to use as the video thumbnail. Upload the image first (upload_media), then pass its ID here. Single-video feed posts only (ignored for stories). JPEG or PNG. A thumbnail that fails to apply won't fail the post.",
+  "type": "string"
+}

Previous value: -"Threads overrides. Supports location and first_comment."New value: +"Threads overrides. Supports location, first_comment and thread (multi-post thread chains)."

Added value: +{
+  "description": "Turns the post into a multi-post thread: each string is published as a reply to the one before it, in order, under the main post. Text only, up to 25 entries, each trimmed to 500 chars. Links are allowed in thread entries. If an entry fails the chain stops there; the main post still publishes.",
+  "items": {
+    "type": "string"
+  },
+  "maxItems": 25,
+  "type": "array"
+}

Previous value: -"Twitter/X overrides. Put links in first_comment (they are stripped from the main tweet)."New value: +"Twitter/X overrides. Put links in first_comment or thread (they are stripped from the main tweet). thread posts a multi-tweet thread."

Added value: +{
+  "description": "Turns the post into a multi-post thread: each string is published as a reply to the one before it, in order, under the main post. Text only, up to 25 entries, each trimmed to 280 chars (25,000 for X Premium accounts). Links are allowed in thread entries. If an entry fails the chain stops there; the main post still publishes.",
+  "items": {
+    "type": "string"
+  },
+  "maxItems": 25,
+  "type": "array"
+}

Added value: +{
+  "description": "Reels only. false keeps the reel off the profile grid: it still publishes and shows in the Reels tab, just not in the main grid. Omit for Instagram's default (grid and Reels tab). Ignored for photos, carousels and stories.",
+  "type": "boolean"
+}

Previous value: -"LinkedIn overrides. document_title only matters for PDF (document) posts."New value: +"LinkedIn overrides. Supports first_comment; document_title only matters for PDF (document) posts."

Added value: +{
+  "description": "Optional comment posted on the LinkedIn post immediately after it publishes (a 'first comment'), as the same person or page. A good spot for a link. Trimmed to 1,250 characters. A failed comment won't fail the post.",
+  "type": "string"
+}

Previous value: -"LinkedIn overrides. Supports first_comment; document_title only matters for PDF (document) posts."New value: +"LinkedIn overrides. document_title only matters for PDF (document) posts."

Removed value: -{
-  "description": "Optional comment posted on the LinkedIn post immediately after it publishes (a 'first comment'), as the same person or page. A good spot for a link. Trimmed to 1,250 characters. A failed comment won't fail the post.",
-  "type": "string"
-}

Previous value: -"LinkedIn overrides. document_title only matters for PDF (document) posts."New value: +"LinkedIn overrides. Supports first_comment; document_title only matters for PDF (document) posts."

Added value: +{
+  "description": "Optional comment posted on the LinkedIn post immediately after it publishes (a 'first comment'), as the same person or page. A good spot for a link. Trimmed to 1,250 characters. A failed comment won't fail the post.",
+  "type": "string"
+}

Added value: +{
+  "description": "Set true when the video includes paid product placement, a sponsorship or an endorsement. YouTube shows viewers an \"Includes paid promotion\" label. Maps to the YouTube Data API paidProductPlacementDetails.hasPaidProductPlacement field.",
+  "type": "boolean"
+}

Previous value: -"Platform-specific caption. Overrides the top-level caption for this platform only. Omit to use the shared caption."New value: +"Platform-specific caption. Overrides the top-level caption for this platform only. Omit to use the shared caption. Write one whenever the shared caption is longer than this platform allows (Bluesky 300, Threads 500, Pinterest 800, Google Business 1,500 characters; X 280 unless has_x_premium is true on the account) so nothing gets cut."

Previous value: -"Platform-specific caption. Overrides the top-level caption for this platform only. Omit to use the shared caption."New value: +"Platform-specific caption. Overrides the top-level caption for this platform only. Omit to use the shared caption. Write one whenever the shared caption is longer than this platform allows (Bluesky 300, Threads 500, Pinterest 800, Google Business 1,500 characters; X 280 unless has_x_premium is true on the account) so nothing gets cut."

Previous value: -"Platform-specific caption. Overrides the top-level caption for this platform only. Omit to use the shared caption."New value: +"Platform-specific caption. Overrides the top-level caption for this platform only. Omit to use the shared caption. Write one whenever the shared caption is longer than this platform allows (Bluesky 300, Threads 500, Pinterest 800, Google Business 1,500 characters; X 280 unless has_x_premium is true on the account) so nothing gets cut."

Previous value: -"Platform-specific caption. Overrides the top-level caption for this platform only. Omit to use the shared caption."New value: +"Platform-specific caption. Overrides the top-level caption for this platform only. Omit to use the shared caption. Write one whenever the shared caption is longer than this platform allows (Bluesky 300, Threads 500, Pinterest 800, Google Business 1,500 characters; X 280 unless has_x_premium is true on the account) so nothing gets cut."

Previous value: -"Platform-specific caption. Overrides the top-level caption for this platform only. Omit to use the shared caption."New value: +"Platform-specific caption. Overrides the top-level caption for this platform only. Omit to use the shared caption. Write one whenever the shared caption is longer than this platform allows (Bluesky 300, Threads 500, Pinterest 800, Google Business 1,500 characters; X 280 unless has_x_premium is true on the account) so nothing gets cut."

Previous value: -"Platform-specific caption. Overrides the top-level caption for this platform only. Omit to use the shared caption."New value: +"Platform-specific caption. Overrides the top-level caption for this platform only. Omit to use the shared caption. Write one whenever the shared caption is longer than this platform allows (Bluesky 300, Threads 500, Pinterest 800, Google Business 1,500 characters; X 280 unless has_x_premium is true on the account) so nothing gets cut."

Previous value: -"Platform-specific caption. Overrides the top-level caption for this platform only. Omit to use the shared caption."New value: +"Platform-specific caption. Overrides the top-level caption for this platform only. Omit to use the shared caption. Write one whenever the shared caption is longer than this platform allows (Bluesky 300, Threads 500, Pinterest 800, Google Business 1,500 characters; X 280 unless has_x_premium is true on the account) so nothing gets cut."

Previous value: -"Platform-specific caption. Overrides the top-level caption for this platform only. Omit to use the shared caption."New value: +"Platform-specific caption. Overrides the top-level caption for this platform only. Omit to use the shared caption. Write one whenever the shared caption is longer than this platform allows (Bluesky 300, Threads 500, Pinterest 800, Google Business 1,500 characters; X 280 unless has_x_premium is true on the account) so nothing gets cut."

Previous value: -"Platform-specific caption. Overrides the top-level caption for this platform only. Omit to use the shared caption."New value: +"Platform-specific caption. Overrides the top-level caption for this platform only. Omit to use the shared caption. Write one whenever the shared caption is longer than this platform allows (Bluesky 300, Threads 500, Pinterest 800, Google Business 1,500 characters; X 280 unless has_x_premium is true on the account) so nothing gets cut."

Previous value: -"Platform-specific caption. Overrides the top-level caption for this platform only. Omit to use the shared caption."New value: +"Platform-specific caption. Overrides the top-level caption for this platform only. Omit to use the shared caption. Write one whenever the shared caption is longer than this platform allows (Bluesky 300, Threads 500, Pinterest 800, Google Business 1,500 characters; X 280 unless has_x_premium is true on the account) so nothing gets cut."