diff --git a/.github/workflows/ci-cd.yml b/.github/workflows/ci-cd.yml
index c258e505..f9ff78ab 100644
--- a/.github/workflows/ci-cd.yml
+++ b/.github/workflows/ci-cd.yml
@@ -54,4 +54,4 @@ jobs:
           workspaces: "contract"
       - name: Build contract
         run: cargo build --target wasm32-unknown-unknown --release
-        working-directory: contract
+        working-directory: contract
\ No newline at end of file
diff --git a/middleware/src/orcher/orcher.controller.ts b/middleware/src/orcher/orcher.controller.ts
new file mode 100644
index 00000000..8945ca07
--- /dev/null
+++ b/middleware/src/orcher/orcher.controller.ts
@@ -0,0 +1,281 @@
+import {
+  Controller,
+  Post,
+  Get,
+  Body,
+  Query,
+  HttpCode,
+  HttpStatus,
+} from '@nestjs/common';
+import { ApiTags, ApiOperation, ApiResponse } from '@nestjs/swagger';
+import { MultiProviderOrchestrationService } from './multi-provider-orchestration.service';
+import { AuditService } from './audit.service';
+import { ConsensusService } from './consensus.service';
+import {
+  OrchestrationStrategy,
+  OrchestratedRequestConfig,
+  OrchestratedResponse,
+  ProviderExecutionMode,
+  ConsensusAlgorithm,
+} from './orchestration.interface';
+import { AIProviderType } from '../provider.interface';
+import { CompletionRequestDto } from '../base.dto';
+
+/**
+ * Orchestration DTOs
+ */
+class OrchestratedCompletionRequestDto extends CompletionRequestDto {
+  strategy: OrchestrationStrategy;
+  targetProviders?: AIProviderType[];
+  timeoutMs?: number;
+  consensusConfig?: {
+    algorithm: ConsensusAlgorithm;
+    minAgreementPercentage: number;
+    similarityThreshold?: number;
+  };
+  bestOfNConfig?: {
+    n: number;
+    criteria: 'fastest' | 'cheapest' | 'highest_quality' | 'most_tokens';
+  };
+}
+
+class ProviderModeUpdateDto {
+  provider: AIProviderType;
+  mode: ProviderExecutionMode;
+}
+
+@ApiTags('orchestration')
+@Controller('orchestration')
+export class OrchestrationController {
+  constructor(
+    private readonly orchestrationService: MultiProviderOrchestrationService,
+    private readonly auditService: AuditService,
+    private readonly consensusService: ConsensusService,
+  ) {}
+
+  /**
+   * Execute a completion with multi-provider orchestration
+   */
+  @Post('complete')
+  @HttpCode(HttpStatus.OK)
+  @ApiOperation({ summary: 'Execute completion with multi-provider orchestration' })
+  @ApiResponse({ status: 200, description: 'Completion successful' })
+  @ApiResponse({ status: 500, description: 'All providers failed' })
+  async orchestratedComplete(
+    @Body() request: OrchestratedCompletionRequestDto,
+  ): Promise<OrchestratedResponse> {
+    const config: OrchestratedRequestConfig = {
+      strategy: request.strategy,
+      targetProviders: request.targetProviders,
+      timeoutMs: request.timeoutMs,
+      consensusConfig: request.consensusConfig,
+      bestOfNConfig: request.bestOfNConfig,
+    };
+
+    // Remove orchestration-specific fields from the request
+    const completionRequest: CompletionRequestDto = {
+      provider: request.provider,
+      model: request.model,
+      messages: request.messages,
+      temperature: request.temperature,
+      maxTokens: request.maxTokens,
+      topP: request.topP,
+      stream: false,
+      stop: request.stop,
+      timeout: request.timeout,
+    };
+
+    return this.orchestrationService.orchestrate(completionRequest, config);
+  }
+
+  /**
+   * Execute with consensus strategy
+   */
+  @Post('consensus')
+  @HttpCode(HttpStatus.OK)
+  @ApiOperation({ summary: 'Execute with consensus across multiple providers' })
+  async consensusComplete(
+    @Body() request: CompletionRequestDto,
+    @Query('providers') providers?: AIProviderType[],
+    @Query('algorithm') algorithm: ConsensusAlgorithm = ConsensusAlgorithm.MAJORITY_VOTE,
+    @Query('minAgreement') minAgreement: number = 0.5,
+  ): Promise<OrchestratedResponse> {
+    const config: OrchestratedRequestConfig = {
+      strategy: OrchestrationStrategy.CONSENSUS,
+      targetProviders: providers,
+      consensusConfig: {
+        algorithm,
+        minAgreementPercentage: minAgreement,
+      },
+    };
+
+    return this.orchestrationService.orchestrate(request, config);
+  }
+
+  /**
+   * Execute in parallel to all providers
+   */
+  @Post('parallel')
+  @HttpCode(HttpStatus.OK)
+  @ApiOperation({ summary: 'Execute in parallel to all enabled providers' })
+  async parallelComplete(
+    @Body() request: CompletionRequestDto,
+    @Query('providers') providers?: AIProviderType[],
+  ): Promise<OrchestratedResponse> {
+    const config: OrchestratedRequestConfig = {
+      strategy: OrchestrationStrategy.PARALLEL,
+      targetProviders: providers,
+    };
+
+    return this.orchestrationService.orchestrate(request, config);
+  }
+
+  /**
+   * Execute with best-of-N selection
+   */
+  @Post('best-of-n')
+  @HttpCode(HttpStatus.OK)
+  @ApiOperation({ summary: 'Execute with best-of-N provider selection' })
+  async bestOfNComplete(
+    @Body() request: CompletionRequestDto,
+    @Query('n') n: number = 3,
+    @Query('criteria') criteria: 'fastest' | 'cheapest' | 'highest_quality' | 'most_tokens' = 'fastest',
+  ): Promise<OrchestratedResponse> {
+    const config: OrchestratedRequestConfig = {
+      strategy: OrchestrationStrategy.BEST_OF_N,
+      bestOfNConfig: {
+        n,
+        criteria,
+      },
+    };
+
+    return this.orchestrationService.orchestrate(request, config);
+  }
+
+  /**
+   * Get orchestration health status
+   */
+  @Get('health')
+  @ApiOperation({ summary: 'Get orchestration health status' })
+  async getHealthStatus() {
+    return this.orchestrationService.getHealthStatus();
+  }
+
+  /**
+   * Get provider execution mode
+   */
+  @Get('providers/:provider/mode')
+  @ApiOperation({ summary: 'Get provider execution mode' })
+  getProviderMode(@Query('provider') provider: AIProviderType) {
+    return {
+      provider,
+      mode: this.orchestrationService.getProviderMode(provider),
+    };
+  }
+
+  /**
+   * Set provider execution mode
+   */
+  @Post('providers/mode')
+  @HttpCode(HttpStatus.OK)
+  @ApiOperation({ summary: 'Set provider execution mode at runtime' })
+  setProviderMode(@Body() update: ProviderModeUpdateDto) {
+    this.orchestrationService.setProviderMode(update.provider, update.mode);
+    return {
+      message: `Provider ${update.provider} mode set to ${update.mode}`,
+      provider: update.provider,
+      mode: update.mode,
+    };
+  }
+
+  /**
+   * Enable a provider
+   */
+  @Post('providers/:provider/enable')
+  @HttpCode(HttpStatus.OK)
+  @ApiOperation({ summary: 'Enable a provider' })
+  enableProvider(@Query('provider') provider: AIProviderType) {
+    this.orchestrationService.setProviderMode(provider, ProviderExecutionMode.ENABLED);
+    return {
+      message: `Provider ${provider} enabled`,
+      provider,
+      mode: ProviderExecutionMode.ENABLED,
+    };
+  }
+
+  /**
+   * Disable a provider
+   */
+  @Post('providers/:provider/disable')
+  @HttpCode(HttpStatus.OK)
+  @ApiOperation({ summary: 'Disable a provider' })
+  disableProvider(@Query('provider') provider: AIProviderType) {
+    this.orchestrationService.setProviderMode(provider, ProviderExecutionMode.DISABLED);
+    return {
+      message: `Provider ${provider} disabled`,
+      provider,
+      mode: ProviderExecutionMode.DISABLED,
+    };
+  }
+
+  /**
+   * Get audit log
+   */
+  @Get('audit-log')
+  @ApiOperation({ summary: 'Get provider audit log' })
+  async getAuditLog(
+    @Query('requestId') requestId?: string,
+    @Query('provider') provider?: AIProviderType,
+    @Query('limit') limit?: number,
+    @Query('offset') offset?: number,
+  ) {
+    const entries = this.auditService.getAuditLog({
+      requestId,
+      provider,
+      limit,
+      offset,
+    });
+
+    return {
+      entries,
+      count: entries.length,
+    };
+  }
+
+  /**
+   * Export audit log
+   */
+  @Get('audit-log/export')
+  @ApiOperation({ summary: 'Export audit log' })
+  async exportAuditLog(
+    @Query('format') format: 'json' | 'csv' = 'json',
+  ) {
+    const data = this.auditService.exportAuditLog({ format });
+    return {
+      data,
+      format,
+    };
+  }
+
+  /**
+   * Get audit statistics
+   */
+  @Get('audit-log/statistics')
+  @ApiOperation({ summary: 'Get audit statistics' })
+  async getAuditStatistics() {
+    return this.auditService.getStatistics();
+  }
+
+  /**
+   * Verify audit entry integrity
+   */
+  @Get('audit-log/:auditId/verify')
+  @ApiOperation({ summary: 'Verify audit entry integrity' })
+  verifyAuditEntry(@Query('auditId') auditId: string) {
+    const isValid = this.auditService.verifyIntegrity(auditId);
+    return {
+      auditId,
+      isValid,
+    };
+  }
+}