From f08c94e2a8d314100593c5f1140735607a0b2287 Mon Sep 17 00:00:00 2001
From: Philipp Spiess <hello@philippspiess.com>
Date: Thu, 8 Jan 2026 16:14:51 +0100
Subject: [PATCH 1/2] fix: add post_ctas_fetch_enabled feature flag

Twitter API now requires this flag, otherwise returns HTTP 400.
---
 src/lib/twitter-client-features.ts | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/lib/twitter-client-features.ts b/src/lib/twitter-client-features.ts
index 18581e9..27be137 100644
--- a/src/lib/twitter-client-features.ts
+++ b/src/lib/twitter-client-features.ts
@@ -17,6 +17,7 @@ export function buildArticleFeatures(): Record<string, boolean> {
     responsive_web_grok_analyze_post_followups_enabled: false,
     responsive_web_grok_annotations_enabled: false,
     responsive_web_jetfuel_frame: true,
+    post_ctas_fetch_enabled: true,
     responsive_web_grok_share_attachment_enabled: true,
     articles_preview_enabled: true,
     responsive_web_edit_tweet_api_enabled: true,
@@ -86,6 +87,7 @@ export function buildSearchFeatures(): Record<string, boolean> {
     responsive_web_grok_analyze_post_followups_enabled: false,
     responsive_web_grok_annotations_enabled: false,
     responsive_web_jetfuel_frame: true,
+    post_ctas_fetch_enabled: true,
     responsive_web_grok_share_attachment_enabled: true,
     responsive_web_edit_tweet_api_enabled: true,
     graphql_is_translatable_rweb_tweet_is_translatable_enabled: true,
@@ -121,6 +123,7 @@ export function buildTweetCreateFeatures(): Record<string, boolean> {
     responsive_web_grok_analyze_post_followups_enabled: false,
     responsive_web_grok_annotations_enabled: false,
     responsive_web_jetfuel_frame: true,
+    post_ctas_fetch_enabled: true,
     responsive_web_grok_share_attachment_enabled: true,
     responsive_web_edit_tweet_api_enabled: true,
     graphql_is_translatable_rweb_tweet_is_translatable_enabled: true,
@@ -192,6 +195,7 @@ export function buildListsFeatures(): Record<string, boolean> {
     responsive_web_grok_analyze_post_followups_enabled: false,
     responsive_web_grok_annotations_enabled: false,
     responsive_web_jetfuel_frame: true,
+    post_ctas_fetch_enabled: true,
     responsive_web_grok_share_attachment_enabled: true,
     articles_preview_enabled: true,
     responsive_web_edit_tweet_api_enabled: true,
@@ -232,6 +236,7 @@ export function buildFollowingFeatures(): Record<string, boolean> {
     responsive_web_grok_analyze_post_followups_enabled: false,
     responsive_web_grok_annotations_enabled: false,
     responsive_web_jetfuel_frame: false,
+    post_ctas_fetch_enabled: true,
     responsive_web_grok_share_attachment_enabled: false,
     articles_preview_enabled: true,
     responsive_web_edit_tweet_api_enabled: true,

From b8009939a2e026acdb3ecc0683959d1e5062516b Mon Sep 17 00:00:00 2001
From: Peter Steinberger <steipete@gmail.com>
Date: Sun, 11 Jan 2026 03:20:53 +0100
Subject: [PATCH 2/2] fix: add post_ctas_fetch_enabled flag (#38) (thanks
 @philipp-spiess)

---
 CHANGELOG.md | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 6e65489..f3485a5 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -12,6 +12,9 @@
 ### Changed
 - Feature flags can be overridden at runtime via `features.json` (refreshable via `query-ids`).
 
+### Fixed
+- GraphQL feature flags now include `post_ctas_fetch_enabled` to avoid 400s (#38) — thanks @philipp-spiess.
+
 ## 0.5.1 — 2026-01-01
 
 ### Changed