diff --git a/package-lock.json b/package-lock.json
index 4ff3c2f2b07d..08a8fa548390 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -15,6 +15,7 @@
         "@azure-tools/typespec-client-generator-cli": "0.14.2",
         "@azure-tools/typespec-client-generator-core": "0.49.0",
         "@azure-tools/typespec-liftr-base": "0.6.0",
+        "@azure-typespec/http-client-csharp": "file:C:/Users/dapzhang/Documents/Workspaces/azure-sdk-for-net/eng/packages/http-client-csharp/azure-typespec-http-client-csharp-1.0.0.tgz",
         "@azure/avocado": "^0.9.1",
         "@typespec/compiler": "0.63.0",
         "@typespec/http": "0.63.0",
@@ -1112,6 +1113,15 @@
       "resolved": "eng/tools/typespec-validation",
       "link": true
     },
+    "node_modules/@azure-typespec/http-client-csharp": {
+      "version": "1.0.0",
+      "resolved": "file:../azure-sdk-for-net/eng/packages/http-client-csharp/azure-typespec-http-client-csharp-1.0.0.tgz",
+      "integrity": "sha512-FOvC5YlSMDC8PtZbw5B2IpAFGQyJ6qwVLU3Ry7i+vZqkwlpVVeeHs+dzLDjuzpwKVxxyCZknLYrFd1MlVuVOQw==",
+      "dev": true,
+      "dependencies": {
+        "@typespec/http-client-csharp": "0.1.9-alpha.20241217.2"
+      }
+    },
     "node_modules/@azure/abort-controller": {
       "version": "2.1.2",
       "resolved": "https://registry.npmjs.org/@azure/abort-controller/-/abort-controller-2.1.2.tgz",
@@ -3710,6 +3720,25 @@
         }
       }
     },
+    "node_modules/@typespec/http-client-csharp": {
+      "version": "0.1.9-alpha.20241217.2",
+      "resolved": "https://registry.npmjs.org/@typespec/http-client-csharp/-/http-client-csharp-0.1.9-alpha.20241217.2.tgz",
+      "integrity": "sha512-kcCSf4tWsGZmdt5EbUFZ5A8hYuLXMK/Tl6XG4IaG5xEvFx92ypV+Oxx7lYfXmKlNbJ9G9Q0cfNhfgKffUav19w==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "json-serialize-refs": "0.1.0-0"
+      },
+      "peerDependencies": {
+        "@azure-tools/typespec-azure-core": ">=0.49.0 <1.0.0 || ~0.50.0-0",
+        "@azure-tools/typespec-client-generator-core": ">=0.49.0 <1.0.0 || ~0.50.0-0",
+        "@typespec/compiler": ">=0.63.0 <1.0.0 || ~0.64.0-0",
+        "@typespec/http": ">=0.63.0 <1.0.0 || ~0.64.0-0",
+        "@typespec/openapi": ">=0.63.0 <1.0.0 || ~0.64.0-0",
+        "@typespec/rest": ">=0.63.0 <1.0.0 || ~0.64.0-0",
+        "@typespec/versioning": ">=0.63.0 <1.0.0 || ~0.64.0-0"
+      }
+    },
     "node_modules/@typespec/openapi": {
       "version": "0.63.0",
       "resolved": "https://registry.npmjs.org/@typespec/openapi/-/openapi-0.63.0.tgz",
@@ -6646,6 +6675,13 @@
       "dev": true,
       "license": "MIT"
     },
+    "node_modules/json-serialize-refs": {
+      "version": "0.1.0-0",
+      "resolved": "https://registry.npmjs.org/json-serialize-refs/-/json-serialize-refs-0.1.0-0.tgz",
+      "integrity": "sha512-SnNMfW2RRPDXIMKa8zdLb59UjMSI1UFZCtIb8ae68GcZ0a6x8b77lIWqqTOdq1azzmkXupD6UWriPLd0JCrFng==",
+      "dev": true,
+      "license": "MIT"
+    },
     "node_modules/json-stable-stringify-without-jsonify": {
       "version": "1.0.1",
       "resolved": "https://registry.npmjs.org/json-stable-stringify-without-jsonify/-/json-stable-stringify-without-jsonify-1.0.1.tgz",
diff --git a/package.json b/package.json
index d40b511e7e4f..77043b20049a 100644
--- a/package.json
+++ b/package.json
@@ -20,6 +20,7 @@
     "@typespec/streams": "0.63.0",
     "@typespec/versioning": "0.63.0",
     "azure-rest-api-specs-eng-tools": "file:eng/tools",
+    "@azure-typespec/http-client-csharp": "file:C:/Users/dapzhang/Documents/Workspaces/azure-sdk-for-net/eng/packages/http-client-csharp/azure-typespec-http-client-csharp-1.0.0.tgz",
     "oav": "^3.5.1",
     "prettier": "~3.3.3",
     "typescript": "~5.6.2"
diff --git a/specification/healthdataaiservices/HealthDataAIServices.DeidServices/tspconfig.yaml b/specification/healthdataaiservices/HealthDataAIServices.DeidServices/tspconfig.yaml
index 479f3e301191..29288b0ea299 100644
--- a/specification/healthdataaiservices/HealthDataAIServices.DeidServices/tspconfig.yaml
+++ b/specification/healthdataaiservices/HealthDataAIServices.DeidServices/tspconfig.yaml
@@ -19,12 +19,13 @@ options:
     flavor: azure
     generate-test: true
     generate-sample: true
-  "@azure-tools/typespec-csharp":
+  "@azure-typespec/http-client-csharp":
     package-dir: "Azure.Health.Deidentification"
     namespace: "{package-dir}"
     clear-output-folder: true
     model-namespace: false
     flavor: azure
+    emitter-output-dir: C:\Users\dapzhang\Documents\Workspaces\azure-sdk-for-net\sdk\healthdataaiservices\Azure.Health.Deidentification
   "@azure-tools/typespec-ts":
     package-dir: "azure-health-deidentification"
     title: DeidentificationClient