diff --git a/packages/x-client/package.json b/packages/x-client/package.json
index 9a5873894b..c9340e6e00 100644
--- a/packages/x-client/package.json
+++ b/packages/x-client/package.json
@@ -12,6 +12,7 @@
     "@ethersproject/strings": "^5.7.0",
     "@ethersproject/wallet": "^5.7.0",
     "@imtbl/config": "0.0.0",
+    "@imtbl/core-sdk": "^2.7.0",
     "@imtbl/generated-clients": "0.0.0",
     "axios": "^1.6.5",
     "bn.js": "^5.2.1",
diff --git a/packages/x-client/src/exportUtils.ts b/packages/x-client/src/exportUtils.ts
index f82c4ee9ca..f50d5465b6 100644
--- a/packages/x-client/src/exportUtils.ts
+++ b/packages/x-client/src/exportUtils.ts
@@ -2,4 +2,4 @@ export {
   generateLegacyStarkPrivateKey,
   generateStarkPrivateKey,
   createStarkSigner,
-} from './utils';
+} from '@imtbl/core-sdk';
diff --git a/packages/x-client/src/utils/index.ts b/packages/x-client/src/utils/index.ts
index d3d802a898..3ef356d579 100644
--- a/packages/x-client/src/utils/index.ts
+++ b/packages/x-client/src/utils/index.ts
@@ -1,5 +1,5 @@
 export * from './convertToSignableToken';
 export * from './formatError';
 export * from './crypto';
-export * from './stark/starkCurve';
-export * from './stark/starkSigner';
+// export * from './stark/starkCurve';
+// export * from './stark/starkSigner';
diff --git a/sdk/package.json b/sdk/package.json
index 42e999a3d3..fb36c0ebd2 100644
--- a/sdk/package.json
+++ b/sdk/package.json
@@ -16,6 +16,7 @@
     "@ethersproject/providers": "^5.7.2",
     "@ethersproject/strings": "^5.7.0",
     "@ethersproject/wallet": "^5.7.0",
+    "@imtbl/core-sdk": "^2.7.0",
     "@imtbl/react-analytics": "0.2.1-alpha",
     "@jest/globals": "^29.5.0",
     "@magic-ext/oidc": "4.2.0",
@@ -86,7 +87,7 @@
     "typescript": "^4.9.5"
   },
   "engines": {
-    "node": ">=20.11.0"
+    "node": ">=20.9.0"
   },
   "exports": {
     "./package.json": "./package.json",
diff --git a/yarn.lock b/yarn.lock
index 9c2bdb4f6b..b6934a1c9c 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -2902,7 +2902,7 @@ __metadata:
   languageName: node
   linkType: hard
 
-"@ethersproject/abi@npm:5.7.0, @ethersproject/abi@npm:^5.0.12, @ethersproject/abi@npm:^5.5.0, @ethersproject/abi@npm:^5.7.0":
+"@ethersproject/abi@npm:5.7.0, @ethersproject/abi@npm:^5.0.0, @ethersproject/abi@npm:^5.0.12, @ethersproject/abi@npm:^5.5.0, @ethersproject/abi@npm:^5.7.0":
   version: 5.7.0
   resolution: "@ethersproject/abi@npm:5.7.0"
   dependencies:
@@ -2990,7 +2990,7 @@ __metadata:
   languageName: node
   linkType: hard
 
-"@ethersproject/bytes@npm:5.7.0, @ethersproject/bytes@npm:^5.7.0":
+"@ethersproject/bytes@npm:5.7.0, @ethersproject/bytes@npm:^5.0.0, @ethersproject/bytes@npm:^5.7.0":
   version: 5.7.0
   resolution: "@ethersproject/bytes@npm:5.7.0"
   dependencies:
@@ -3129,7 +3129,7 @@ __metadata:
   languageName: node
   linkType: hard
 
-"@ethersproject/providers@npm:5.7.2, @ethersproject/providers@npm:^5.7.2":
+"@ethersproject/providers@npm:5.7.2, @ethersproject/providers@npm:^5.0.0, @ethersproject/providers@npm:^5.7.2":
   version: 5.7.2
   resolution: "@ethersproject/providers@npm:5.7.2"
   dependencies:
@@ -3575,6 +3575,24 @@ __metadata:
   languageName: unknown
   linkType: soft
 
+"@imtbl/core-sdk@npm:^2.7.0":
+  version: 2.7.0
+  resolution: "@imtbl/core-sdk@npm:2.7.0"
+  dependencies:
+    "@ethersproject/abi": ^5.0.0
+    "@ethersproject/bytes": ^5.0.0
+    "@ethersproject/providers": ^5.0.0
+    axios: ^0.26.1
+    bn.js: ^5.2.0
+    elliptic: ^6.5.4
+    enc-utils: ^3.0.0
+    ethereumjs-wallet: ^1.0.2
+    ethers: ^5.7.1
+    hash.js: ^1.1.7
+  checksum: ea9bed1eceda1563d9ba50db29935ad0b4131cce3f1bf8e50f6bad28f3f301969b399319e8d6417e7546098c77850aa70c316ea48ecbfa7d28e85a27a206f234
+  languageName: node
+  linkType: hard
+
 "@imtbl/cryptofiat@0.0.0, @imtbl/cryptofiat@workspace:packages/internal/cryptofiat":
   version: 0.0.0-use.local
   resolution: "@imtbl/cryptofiat@workspace:packages/internal/cryptofiat"
@@ -3844,6 +3862,7 @@ __metadata:
     "@imtbl/checkout-sdk": 0.0.0
     "@imtbl/checkout-widgets": 0.0.0
     "@imtbl/config": 0.0.0
+    "@imtbl/core-sdk": ^2.7.0
     "@imtbl/cryptofiat": 0.0.0
     "@imtbl/generated-clients": 0.0.0
     "@imtbl/guardian": 0.0.0
@@ -3973,6 +3992,7 @@ __metadata:
     "@ethersproject/strings": ^5.7.0
     "@ethersproject/wallet": ^5.7.0
     "@imtbl/config": 0.0.0
+    "@imtbl/core-sdk": ^2.7.0
     "@imtbl/generated-clients": 0.0.0
     "@rollup/plugin-typescript": ^11.0.0
     "@swc/jest": ^0.2.24
@@ -11768,6 +11788,15 @@ __metadata:
   languageName: node
   linkType: hard
 
+"axios@npm:^0.26.1":
+  version: 0.26.1
+  resolution: "axios@npm:0.26.1"
+  dependencies:
+    follow-redirects: ^1.14.8
+  checksum: d9eb58ff4bc0b36a04783fc9ff760e9245c829a5a1052ee7ca6013410d427036b1d10d04e7380c02f3508c5eaf3485b1ae67bd2adbfec3683704745c8d7a6e1a
+  languageName: node
+  linkType: hard
+
 "axios@npm:^1.6.5":
   version: 1.6.5
   resolution: "axios@npm:1.6.5"
@@ -16038,7 +16067,7 @@ __metadata:
   languageName: node
   linkType: hard
 
-"ethers@npm:^5.7.2":
+"ethers@npm:^5.7.1, ethers@npm:^5.7.2":
   version: 5.7.2
   resolution: "ethers@npm:5.7.2"
   dependencies:
@@ -16651,6 +16680,16 @@ __metadata:
   languageName: node
   linkType: hard
 
+"follow-redirects@npm:^1.14.8":
+  version: 1.15.6
+  resolution: "follow-redirects@npm:1.15.6"
+  peerDependenciesMeta:
+    debug:
+      optional: true
+  checksum: a62c378dfc8c00f60b9c80cab158ba54e99ba0239a5dd7c81245e5a5b39d10f0c35e249c3379eae719ff0285fff88c365dd446fab19dee771f1d76252df1bbf5
+  languageName: node
+  linkType: hard
+
 "follow-redirects@npm:^1.15.4":
   version: 1.15.4
   resolution: "follow-redirects@npm:1.15.4"