diff --git a/src/server/NeynarClient.ts b/src/server/NeynarClient.ts
index b786f94..7c99f5e 100644
--- a/src/server/NeynarClient.ts
+++ b/src/server/NeynarClient.ts
@@ -2,6 +2,7 @@ import { Hash } from 'viem'
 import { mnemonicToAccount } from 'viem/accounts'
 import {
   Cast,
+  CastWithViewerContext,
   GeneratedSigner,
   PendingSigner,
   Signer,
@@ -130,6 +131,22 @@ export default class NeynarClient {
     return this.get<{ cast: Cast }>('cast', params)
   }
 
+  getCastsInThread(
+    threadHash: string,
+    viewer?: null,
+  ): Promise<{ result: { casts: Cast[] } }>
+  getCastsInThread(
+    threadHash: string,
+    viewer: number,
+  ): Promise<{ result: { casts: CastWithViewerContext[] } }>
+  getCastsInThread(threadHash: string, viewer?: number | null) {
+    const params = new URLSearchParams({ threadHash })
+    if (viewer) params.set('viewerFid', viewer.toString())
+    return this.get<{
+      result: { casts: Cast[] | CastWithViewerContext[] }
+    }>('all-casts-in-thread', params, 1)
+  }
+
   postCast(
     signerUuid: string,
     text: string,
diff --git a/src/server/types/Cast.ts b/src/server/types/Cast.ts
index ff8888c..64586d5 100644
--- a/src/server/types/Cast.ts
+++ b/src/server/types/Cast.ts
@@ -35,6 +35,13 @@ export type Cast = {
   }
 }
 
+export type CastWithViewerContext = Cast & {
+  viewerContext: {
+    liked: boolean
+    recasted: boolean
+  }
+}
+
 type Embed = {
   url: string
 }