diff --git a/extensions/mssql/src/constants.ts b/extensions/mssql/src/constants.ts
index 1fe08cf20d..71bba4f78c 100644
--- a/extensions/mssql/src/constants.ts
+++ b/extensions/mssql/src/constants.ts
@@ -16,6 +16,7 @@ export const sqlProviderName = 'MSSQL';
 export const ObjectExplorerService = 'objectexplorer';
 export const CmsService = 'cmsService';
 export const DacFxService = 'dacfxService';
+export const SqlProjectsService = 'sqlProjectsService';
 export const SchemaCompareService = 'schemaCompareService';
 export const LanguageExtensionService = 'languageExtensionService';
 export const objectExplorerPrefix: string = 'objectexplorer://';
diff --git a/extensions/mssql/src/contracts.ts b/extensions/mssql/src/contracts.ts
index f31099f6c3..3874c58999 100644
--- a/extensions/mssql/src/contracts.ts
+++ b/extensions/mssql/src/contracts.ts
@@ -601,6 +601,22 @@ export namespace SavePublishProfileRequest {
 
 // ------------------------------- </ DacFx > ------------------------------------
 
+// ------------------------------- < Sql Projects > ------------------------------------
+
+export namespace OpenSqlProjectRequest {
+	export const type = new RequestType<SqlProjectParams, azdata.ResultStatus, void, void>('sqlProjects/openProject');
+}
+
+export namespace GetCrossPlatformCompatiblityRequest {
+	export const type = new RequestType<SqlProjectParams, mssql.GetCrossPlatformCompatiblityResult, void, void>('sqlProjects/getCrossPlatformCompatibility');
+}
+
+export interface SqlProjectParams {
+	projectUri: string;
+}
+
+// ------------------------------- </ Sql Projects > -----------------------------------
+
 // ------------------------------- <CMS> ----------------------------------------
 
 
diff --git a/extensions/mssql/src/mssql.d.ts b/extensions/mssql/src/mssql.d.ts
index c2be549dba..6e4900fd3b 100644
--- a/extensions/mssql/src/mssql.d.ts
+++ b/extensions/mssql/src/mssql.d.ts
@@ -40,6 +40,8 @@ declare module 'mssql' {
 
 		readonly dacFx: IDacFxService;
 
+		readonly sqlProjects: ISqlProjectsService;
+
 		readonly sqlAssessment: ISqlAssessmentService;
 
 		readonly sqlMigration: ISqlMigrationService;
@@ -314,6 +316,19 @@ declare module 'mssql' {
 
 	//#endregion
 
+	//#region --- Sql Projects
+
+	export interface ISqlProjectsService {
+		openProject(projectUri: string): Promise<azdata.ResultStatus>;
+		getCrossPlatformCompatiblityRequest(projectUri: string): Promise<GetCrossPlatformCompatiblityResult>;
+	}
+
+	export interface GetCrossPlatformCompatiblityResult extends azdata.ResultStatus {
+		isCrossPlatformCompatible: boolean;
+	}
+
+	//#endregion
+
 	//#region --- Language Extensibility
 	export interface ExternalLanguageContent {
 		pathToExtension: string;
diff --git a/extensions/mssql/src/mssqlApiFactory.ts b/extensions/mssql/src/mssqlApiFactory.ts
index ad678e85ab..f78878429a 100644
--- a/extensions/mssql/src/mssqlApiFactory.ts
+++ b/extensions/mssql/src/mssqlApiFactory.ts
@@ -4,7 +4,7 @@
  *--------------------------------------------------------------------------------------------*/
 
 import { AppContext } from './appContext';
-import { IExtension, ICmsService, IDacFxService, ISchemaCompareService, ILanguageExtensionService, ISqlAssessmentService, ISqlMigrationService, IAzureBlobService, ITdeMigrationService } from 'mssql';
+import { IExtension, ICmsService, IDacFxService, ISqlProjectsService, ISchemaCompareService, ILanguageExtensionService, ISqlAssessmentService, ISqlMigrationService, IAzureBlobService, ITdeMigrationService } from 'mssql';
 import * as constants from './constants';
 import { SqlToolsServer } from './sqlToolsServer';
 
@@ -19,6 +19,9 @@ export function createMssqlApi(context: AppContext, sqlToolsServer: SqlToolsServ
 		get dacFx() {
 			return context.getService<IDacFxService>(constants.DacFxService);
 		},
+		get sqlProjects() {
+			return context.getService<ISqlProjectsService>(constants.SqlProjectsService);
+		},
 		get schemaCompare() {
 			return context.getService<ISchemaCompareService>(constants.SchemaCompareService);
 		},
diff --git a/extensions/mssql/src/sqlProjects/sqlProjectsService.ts b/extensions/mssql/src/sqlProjects/sqlProjectsService.ts
new file mode 100644
index 0000000000..a920da8588
--- /dev/null
+++ b/extensions/mssql/src/sqlProjects/sqlProjectsService.ts
@@ -0,0 +1,57 @@
+/*---------------------------------------------------------------------------------------------
+ *  Copyright (c) Microsoft Corporation. All rights reserved.
+ *  Licensed under the Source EULA. See License.txt in the project root for license information.
+ *--------------------------------------------------------------------------------------------*/
+
+import * as mssql from 'mssql';
+import * as constants from '../constants';
+import * as Utils from '../utils';
+import * as azdata from 'azdata';
+import * as contracts from '../contracts';
+import { AppContext } from '../appContext';
+import { ISqlOpsFeature, SqlOpsDataClient } from 'dataprotocol-client';
+import { ClientCapabilities } from 'vscode-languageclient';
+
+export class SqlProjectsService implements mssql.ISqlProjectsService {
+	public static asFeature(context: AppContext): ISqlOpsFeature {
+		return class extends SqlProjectsService {
+			constructor(client: SqlOpsDataClient) {
+				super(context, client);
+			}
+
+			fillClientCapabilities(capabilities: ClientCapabilities): void {
+				Utils.ensure(capabilities, 'sqlProjects')!.sqlProjects = true;
+			}
+
+			initialize(): void {
+			}
+		};
+	}
+
+	private constructor(context: AppContext, protected readonly client: SqlOpsDataClient) {
+		context.registerService(constants.SqlProjectsService, this);
+	}
+
+
+	public async openProject(projectUri: string): Promise<azdata.ResultStatus> {
+		const params: contracts.SqlProjectParams = { projectUri };
+		try {
+			const result = await this.client.sendRequest(contracts.OpenSqlProjectRequest.type, params);
+			return result;
+		} catch (e) {
+			this.client.logFailedRequest(contracts.OpenSqlProjectRequest.type, e);
+			throw e;
+		}
+	}
+
+	public async getCrossPlatformCompatiblityRequest(projectUri: string): Promise<mssql.GetCrossPlatformCompatiblityResult> {
+		const params: contracts.SqlProjectParams = { projectUri };
+		try {
+			const result = await this.client.sendRequest(contracts.GetCrossPlatformCompatiblityRequest.type, params);
+			return result;
+		} catch (e) {
+			this.client.logFailedRequest(contracts.GetCrossPlatformCompatiblityRequest.type, e);
+			throw e;
+		}
+	}
+}
diff --git a/extensions/mssql/src/sqlToolsServer.ts b/extensions/mssql/src/sqlToolsServer.ts
index 7136aced2c..3139020e79 100644
--- a/extensions/mssql/src/sqlToolsServer.ts
+++ b/extensions/mssql/src/sqlToolsServer.ts
@@ -30,6 +30,7 @@ import { SqlCredentialService } from './credentialstore/sqlCredentialService';
 import { AzureBlobService } from './azureBlob/azureBlobService';
 import { ErrorDiagnosticsProvider } from './errorDiagnostics/errorDiagnosticsProvider';
 import { TdeMigrationService } from './tdeMigration/tdeMigrationService';
+import { SqlProjectsService } from './sqlProjects/sqlProjectsService';
 
 const localize = nls.loadMessageBundle();
 const outputChannel = vscode.window.createOutputChannel(Constants.serviceName);
@@ -188,6 +189,7 @@ function getClientOptions(context: AppContext): ClientOptions {
 			SchemaCompareService.asFeature(context),
 			LanguageExtensionService.asFeature(context),
 			DacFxService.asFeature(context),
+			SqlProjectsService.asFeature(context),
 			CmsService.asFeature(context),
 			SqlAssessmentService.asFeature(context),
 			NotebookConvertService.asFeature(context),
diff --git a/extensions/sql-database-projects/src/common/utils.ts b/extensions/sql-database-projects/src/common/utils.ts
index f52c4472de..dc9341d863 100644
--- a/extensions/sql-database-projects/src/common/utils.ts
+++ b/extensions/sql-database-projects/src/common/utils.ts
@@ -302,6 +302,14 @@ export async function getSchemaCompareService(): Promise<ISchemaCompareService>
 	}
 }
 
+export async function getSqlProjectsService(): Promise<mssql.ISqlProjectsService> {
+	const ext = vscode.extensions.getExtension(mssql.extension.name) as vscode.Extension<mssql.IExtension>;
+	const api = await ext.activate();
+	return api.sqlProjects;
+
+	// TODO: add vscode-mssql support
+}
+
 export async function getVscodeMssqlApi(): Promise<vscodeMssql.IExtension> {
 	const ext = vscode.extensions.getExtension(vscodeMssql.extension.name) as vscode.Extension<vscodeMssql.IExtension>;
 	return ext.activate();