diff --git a/packages/http-client-csharp/CONTRIBUTING.md b/packages/http-client-csharp/CONTRIBUTING.md
new file mode 100644
index 00000000000..cf5ac90f700
--- /dev/null
+++ b/packages/http-client-csharp/CONTRIBUTING.md
@@ -0,0 +1,32 @@
+# Contributing
+
+## PR Process
+
+When making changes to `@typespec/http-client-csharp`, the downstream effects on the Azure SDK for .NET need to be considered.
+
+### Automated PR Creation
+
+The publishing pipeline for `@typespec/http-client-csharp` includes automated steps to create a PR in the [azure-sdk-for-net](https://github.com/Azure/azure-sdk-for-net) repository to update the dependency on `Microsoft.TypeSpec.Generator.ClientModel`.
+
+The process works as follows:
+
+1. Create your PR to the [microsoft/typespec](https://github.com/microsoft/typespec) repository for `@typespec/http-client-csharp`
+2. After your PR is merged and a release happens, the publishing pipeline will:
+   a. Publish the NuGet packages
+   b. Automatically create a PR in [azure-sdk-for-net](https://github.com/Azure/azure-sdk-for-net) to update the dependency
+
+3. The automated PR in azure-sdk-for-net will:
+   - Update the package references in Directory.Packages.props
+   - Include a reference to the original TypeSpec PR
+   - Include details about the changes
+
+4. Once the PR in azure-sdk-for-net is merged, the update is complete
+
+### Manual Process (if automation fails)
+
+If the automated PR creation fails, you can manually create the PR following these steps:
+
+1. Clone the azure-sdk-for-net repository
+2. Create a new branch
+3. Update the package references in Directory.Packages.props
+4. Create a PR with a description referencing the TypeSpec PR
\ No newline at end of file
diff --git a/packages/http-client-csharp/eng/pipeline/publish.yml b/packages/http-client-csharp/eng/pipeline/publish.yml
index dc8f5201eee..c3ac1cb0108 100644
--- a/packages/http-client-csharp/eng/pipeline/publish.yml
+++ b/packages/http-client-csharp/eng/pipeline/publish.yml
@@ -47,3 +47,28 @@ extends:
               inputs:
                 useGlobalJson: true
                 workingDirectory: $(Build.SourcesDirectory)/packages/http-client-csharp
+
+      - stage: CreateAzureSdkForNetPR
+        displayName: Create PR for azure-sdk-for-net
+        dependsOn: CSharp_Publish
+        condition: and(succeeded(), ne(variables['Build.Reason'], 'PullRequest'), eq(variables['Build.SourceBranchName'], 'main'))
+        pool:
+          name: $(LINUXPOOL)
+          image: $(LINUXVMIMAGE)
+          os: linux
+        jobs:
+          - job: CreatePR
+            steps:
+              - checkout: self
+
+              - template: /eng/tsp-core/pipelines/templates/install.yml
+              
+              - script: |
+                  node ./packages/internal-build-utils/cmd/cli.js create-azure-sdk-for-net-pr \
+                  --packagePath $(Build.SourcesDirectory)/packages/http-client-csharp \
+                  --pullRequestUrl "https://github.com/microsoft/typespec/pull/$(System.PullRequest.PullRequestNumber)" \
+                  --packageUrl "https://pkgs.dev.azure.com/azure-sdk/public/_packaging/azure-sdk-for-js-test-autorest/nuget/v3/flat2/Microsoft.TypeSpec.Generator.ClientModel/$(packageVersion)" \
+                  --githubToken $(azure-sdk-build-github-token)
+                displayName: Create PR in azure-sdk-for-net
+                env:
+                  packageVersion: $(Build.BuildNumber)
diff --git a/packages/internal-build-utils/src/cli.ts b/packages/internal-build-utils/src/cli.ts
index 430d5647f1f..9b0b25da102 100644
--- a/packages/internal-build-utils/src/cli.ts
+++ b/packages/internal-build-utils/src/cli.ts
@@ -1,6 +1,7 @@
 import yargs from "yargs";
 import { generateThirdPartyNotice } from "./generate-third-party-notice.js";
 import { bumpVersionsForPR, bumpVersionsForPrerelease } from "./prerelease.js";
+import { createAzureSdkForNetPr } from "./create-azure-sdk-for-net-pr.js";
 
 main().catch((e) => {
   // eslint-disable-next-line no-console
@@ -48,5 +49,36 @@ async function main() {
             demandOption: true,
           }),
       (args) => bumpVersionsForPR(args.workspaceRoot, args.pr, args.buildNumber),
+    )
+    .command(
+      "create-azure-sdk-for-net-pr",
+      "Create PR in azure-sdk-for-net to update http-client-csharp dependency",
+      (cmd) =>
+        cmd
+          .option("packagePath", {
+            type: "string",
+            description: "Path to the http-client-csharp package",
+            demandOption: true,
+          })
+          .option("pullRequestUrl", {
+            type: "string",
+            description: "URL of the PR in typespec repository",
+            demandOption: true,
+          })
+          .option("packageUrl", {
+            type: "string",
+            description: "URL to the published NuGet package",
+            demandOption: true,
+          })
+          .option("githubToken", {
+            type: "string",
+            description: "GitHub token for authentication",
+            demandOption: true,
+          })
+          .option("branchName", {
+            type: "string",
+            description: "Branch name to create in azure-sdk-for-net",
+          }),
+      (args) => createAzureSdkForNetPr(args),
     ).argv;
 }
diff --git a/packages/internal-build-utils/src/create-azure-sdk-for-net-pr.ts b/packages/internal-build-utils/src/create-azure-sdk-for-net-pr.ts
new file mode 100644
index 00000000000..70149d30111
--- /dev/null
+++ b/packages/internal-build-utils/src/create-azure-sdk-for-net-pr.ts
@@ -0,0 +1,148 @@
+/* eslint-disable no-console */
+import { execSync } from "child_process";
+import { mkdirSync, writeFileSync, readFileSync } from "fs";
+import { join, resolve } from "path";
+import { DefaultHttpClientFetch } from "./http-client.js";
+
+interface Options {
+  /**
+   * Path to the http-client-csharp package
+   */
+  packagePath: string;
+
+  /**
+   * Pull request URL of the PR in typespec repository
+   */
+  pullRequestUrl: string;
+
+  /**
+   * Direct URL to the published NuGet package
+   */
+  packageUrl: string;
+
+  /**
+   * GitHub token for authentication
+   */
+  githubToken: string;
+
+  /**
+   * Branch name to create in azure-sdk-for-net
+   */
+  branchName?: string;
+}
+
+/**
+ * Creates a PR in the azure-sdk-for-net repository to update the http-client-csharp dependency
+ */
+export async function createAzureSdkForNetPr(options: Options): Promise<void> {
+  const { packagePath, pullRequestUrl, packageUrl, githubToken } = options;
+  console.log(`Creating PR for azure-sdk-for-net to update dependency on http-client-csharp`);
+
+  // Create temp folder for repo
+  const tempDir = join(process.cwd(), "temp", "azure-sdk-for-net");
+  mkdirSync(tempDir, { recursive: true });
+  console.log(`Created temp directory at ${tempDir}`);
+
+  try {
+    // Clone the repository
+    console.log(`Cloning azure-sdk-for-net repository...`);
+    execSync(`git clone https://github.com/Azure/azure-sdk-for-net.git ${tempDir}`, {
+      stdio: "inherit",
+    });
+
+    // Read package info
+    const packageJsonPath = resolve(packagePath, "package.json");
+    const packageJsonContent = JSON.parse(readFileSync(packageJsonPath, "utf8"));
+    const packageVersion = packageJsonContent.version;
+    console.log(`Using package version: ${packageVersion}`);
+
+    // Generate branch name if not provided
+    const branchName = options.branchName || `typespec/update-http-client-${packageVersion}`;
+    console.log(`Using branch name: ${branchName}`);
+
+    // Create a new branch
+    console.log(`Creating branch ${branchName}...`);
+    execSync(`git checkout -b ${branchName}`, {
+      stdio: "inherit",
+      cwd: tempDir,
+    });
+
+    // Update the dependency in Directory.Packages.props (this is the file that usually contains dependency versions in Azure SDK)
+    console.log(`Updating dependency version in Directory.Packages.props...`);
+    const propsFilePath = join(tempDir, "Directory.Packages.props");
+    const propsFileContent = readFileSync(propsFilePath, "utf8");
+
+    // Update the appropriate package reference in the file
+    const updatedContent = propsFileContent.replace(
+      /<PackageVersion Include="Microsoft\.TypeSpec\.Generator\.ClientModel".*?>(.*?)<\/PackageVersion>/g,
+      `<PackageVersion Include="Microsoft.TypeSpec.Generator.ClientModel">${packageVersion}</PackageVersion>`
+    );
+    
+    // Write the updated file back
+    writeFileSync(propsFilePath, updatedContent);
+    
+    // Commit the changes
+    console.log(`Committing changes...`);
+    execSync(`git add Directory.Packages.props`, {
+      stdio: "inherit",
+      cwd: tempDir,
+    });
+    execSync(`git commit -m "Update Microsoft.TypeSpec.Generator.ClientModel to ${packageVersion}"`, {
+      stdio: "inherit",
+      cwd: tempDir,
+    });
+
+    // Push the branch
+    console.log(`Pushing branch to remote...`);
+    // Using HTTPS with token for auth
+    const remoteUrl = `https://${githubToken}@github.com/Azure/azure-sdk-for-net.git`;
+    execSync(`git push ${remoteUrl} ${branchName}`, {
+      stdio: "inherit",
+      cwd: tempDir,
+    });
+
+    // Create PR using GitHub API
+    console.log(`Creating PR in Azure/azure-sdk-for-net...`);
+    const client = new DefaultHttpClientFetch();
+
+    const prBody = `
+This PR updates the dependency on Microsoft.TypeSpec.Generator.ClientModel to version ${packageVersion}.
+
+## Details
+
+- Original TypeSpec PR: ${pullRequestUrl}
+- Package URL: ${packageUrl}
+
+This is an automated PR created by the TypeSpec publish pipeline.
+    `.trim();
+
+    const prTitle = `Update Microsoft.TypeSpec.Generator.ClientModel to ${packageVersion}`;
+
+    const response = await client.fetch(`https://api.github.com/repos/Azure/azure-sdk-for-net/pulls`, {
+      method: "POST",
+      headers: {
+        "Accept": "application/vnd.github.v3+json",
+        "Authorization": `token ${githubToken}`,
+        "User-Agent": "Microsoft-TypeSpec",
+      },
+      body: JSON.stringify({
+        title: prTitle,
+        body: prBody,
+        head: branchName,
+        base: "master", // Assuming the main branch is called 'master'
+      }),
+    });
+
+    if (response.status >= 400) {
+      const responseBody = await response.text();
+      console.error(`Failed to create PR: ${responseBody}`);
+      throw new Error(`Failed to create PR: ${response.status}`);
+    }
+
+    const responseJson = await response.json();
+    console.log(`Successfully created PR: ${responseJson.html_url}`);
+  } catch (error) {
+    console.error(`Error creating PR:`, error);
+    throw error;
+  }
+}
\ No newline at end of file
diff --git a/packages/internal-build-utils/src/http-client.ts b/packages/internal-build-utils/src/http-client.ts
new file mode 100644
index 00000000000..45f72e5d2e8
--- /dev/null
+++ b/packages/internal-build-utils/src/http-client.ts
@@ -0,0 +1,16 @@
+/**
+ * Simple HTTP client for making requests to external APIs
+ */
+
+export interface HttpClient {
+  fetch(url: string, init?: RequestInit): Promise<Response>;
+}
+
+/**
+ * Default implementation of HttpClient using fetch
+ */
+export class DefaultHttpClientFetch implements HttpClient {
+  async fetch(url: string, init?: RequestInit): Promise<Response> {
+    return fetch(url, init);
+  }
+}
\ No newline at end of file
diff --git a/packages/internal-build-utils/src/index.ts b/packages/internal-build-utils/src/index.ts
index d8dbe480a83..1413f15d41e 100644
--- a/packages/internal-build-utils/src/index.ts
+++ b/packages/internal-build-utils/src/index.ts
@@ -2,3 +2,5 @@ export * from "./common.js";
 export * from "./dotnet.js";
 export * from "./visualstudio.js";
 export * from "./watch.js";
+export * from "./create-azure-sdk-for-net-pr.js";
+export * from "./http-client.js";