diff --git a/examples/research-server/package.json b/examples/research-server/package.json
index d9f047b..4cd80be 100644
--- a/examples/research-server/package.json
+++ b/examples/research-server/package.json
@@ -9,7 +9,7 @@
     "typecheck": "tsc -p tsconfig.json --noEmit"
   },
   "dependencies": {
-    "@anthropic-ai/sdk": "^0.127.0",
+    "@anthropic-ai/sdk": "^0.128.0",
     "@x402/core": "^2.26.0",
     "@x402/express": "^2.26.0",
     "@x402/svm": "^2.26.0",
diff --git a/examples/two-agent-demo/package.json b/examples/two-agent-demo/package.json
index c0786a0..4907b39 100644
--- a/examples/two-agent-demo/package.json
+++ b/examples/two-agent-demo/package.json
@@ -11,7 +11,7 @@
   },
   "dependencies": {
     "@agenticpay/sdk": "workspace:*",
-    "@anthropic-ai/sdk": "^0.127.0",
+    "@anthropic-ai/sdk": "^0.128.0",
     "@solana/kit": "^8.3.0",
     "@x402/core": "^2.26.0",
     "@x402/fetch": "^2.26.0",
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index 199e5cc..ac21b0a 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -24,8 +24,8 @@ importers:
   examples/research-server:
     dependencies:
       '@anthropic-ai/sdk':
-        specifier: ^0.127.0
-        version: 0.127.0(zod@3.25.76)
+        specifier: ^0.128.0
+        version: 0.128.0(zod@3.25.76)
       '@x402/core':
         specifier: ^2.26.0
         version: 2.26.0
@@ -52,8 +52,8 @@ importers:
         specifier: workspace:*
         version: link:../../packages/sdk
       '@anthropic-ai/sdk':
-        specifier: ^0.127.0
-        version: 0.127.0(zod@4.6.5)
+        specifier: ^0.128.0
+        version: 0.128.0(zod@4.6.5)
       '@solana/kit':
         specifier: ^8.3.0
         version: 8.3.0(bufferutil@4.1.0)(fastestsmallesttextencoderdecoder@1.0.22)(typescript@7.0.2)(utf-8-validate@6.0.6)
@@ -264,8 +264,8 @@ packages:
     resolution: {integrity: sha512-Q3BZ27qfpYqnCYGvE3vt+Qi6LGOF9R5Nmzn+9JoM1lCRsD9mYaIhfJLkSunN48nfGXJ6n+XNV0J/XVpqGQl7Dw==}
     engines: {node: '>=18'}
 
-  '@anthropic-ai/sdk@0.127.0':
-    resolution: {integrity: sha512-OKiVbG9LHCxjn4fBJZJFy/Bz3hqE1RYpwaeSEDNheQnvz0XNKmGT/Lhkz2Sf1a27Ldt3vVv+BkU81I0U/8EpoQ==}
+  '@anthropic-ai/sdk@0.128.0':
+    resolution: {integrity: sha512-tl5cBFZC1jVFrTuQyvQObA4WmuNgcYVeXfriqOumgtLAHUm4gPUj18YnszBW60v0PrjDB8nBDOC6wd9CmHQFlA==}
     hasBin: true
     peerDependencies:
       zod: ^3.25.0 || ^4.0.0
@@ -2314,14 +2314,14 @@ snapshots:
     dependencies:
       json-schema: 0.4.0
 
-  '@anthropic-ai/sdk@0.127.0(zod@3.25.76)':
+  '@anthropic-ai/sdk@0.128.0(zod@3.25.76)':
     dependencies:
       json-schema-to-ts: 3.1.1
       standardwebhooks: 1.1.1
     optionalDependencies:
       zod: 3.25.76
 
-  '@anthropic-ai/sdk@0.127.0(zod@4.6.5)':
+  '@anthropic-ai/sdk@0.128.0(zod@4.6.5)':
     dependencies:
       json-schema-to-ts: 3.1.1
       standardwebhooks: 1.1.1