diff --git a/apps/api/prisma/schema.prisma b/apps/api/prisma/schema.prisma
index 62076cd..efe806e 100644
--- a/apps/api/prisma/schema.prisma
+++ b/apps/api/prisma/schema.prisma
@@ -215,6 +215,7 @@ model Workspace {
   cronSchedules    CronSchedule[]
   personalities    Personality[]
   llmSettings      WorkspaceLlmSettings?
+  qualityGates     QualityGate[]
 
   @@index([ownerId])
   @@map("workspaces")
@@ -1003,3 +1004,29 @@ model WorkspaceLlmSettings {
   @@index([defaultPersonalityId])
   @@map("workspace_llm_settings")
 }
+
+// ============================================
+// QUALITY GATE MODULE
+// ============================================
+
+model QualityGate {
+  id             String   @id @default(uuid()) @db.Uuid
+  workspaceId    String   @map("workspace_id") @db.Uuid
+  workspace      Workspace @relation(fields: [workspaceId], references: [id], onDelete: Cascade)
+  name           String
+  description    String?
+  type           String   // 'build' | 'lint' | 'test' | 'coverage' | 'custom'
+  command        String?
+  expectedOutput String?  @map("expected_output")
+  isRegex        Boolean  @default(false) @map("is_regex")
+  required       Boolean  @default(true)
+  order          Int      @default(0)
+  isEnabled      Boolean  @default(true) @map("is_enabled")
+  createdAt      DateTime @default(now()) @map("created_at") @db.Timestamptz
+  updatedAt      DateTime @updatedAt @map("updated_at") @db.Timestamptz
+
+  @@unique([workspaceId, name])
+  @@index([workspaceId])
+  @@index([workspaceId, isEnabled])
+  @@map("quality_gates")
+}
diff --git a/apps/api/src/quality-gate-config/dto/create-quality-gate.dto.ts b/apps/api/src/quality-gate-config/dto/create-quality-gate.dto.ts
new file mode 100644
index 0000000..8dad580
--- /dev/null
+++ b/apps/api/src/quality-gate-config/dto/create-quality-gate.dto.ts
@@ -0,0 +1,37 @@
+import { IsString, IsOptional, IsBoolean, IsIn, IsInt, IsNotEmpty } from "class-validator";
+
+/**
+ * DTO for creating a new quality gate
+ */
+export class CreateQualityGateDto {
+  @IsString()
+  @IsNotEmpty()
+  name!: string;
+
+  @IsOptional()
+  @IsString()
+  description?: string;
+
+  @IsIn(["build", "lint", "test", "coverage", "custom"])
+  type!: string;
+
+  @IsOptional()
+  @IsString()
+  command?: string;
+
+  @IsOptional()
+  @IsString()
+  expectedOutput?: string;
+
+  @IsOptional()
+  @IsBoolean()
+  isRegex?: boolean;
+
+  @IsOptional()
+  @IsBoolean()
+  required?: boolean;
+
+  @IsOptional()
+  @IsInt()
+  order?: number;
+}
diff --git a/apps/api/src/quality-gate-config/dto/index.ts b/apps/api/src/quality-gate-config/dto/index.ts
new file mode 100644
index 0000000..f3caed3
--- /dev/null
+++ b/apps/api/src/quality-gate-config/dto/index.ts
@@ -0,0 +1,2 @@
+export * from "./create-quality-gate.dto";
+export * from "./update-quality-gate.dto";
diff --git a/apps/api/src/quality-gate-config/dto/update-quality-gate.dto.ts b/apps/api/src/quality-gate-config/dto/update-quality-gate.dto.ts
new file mode 100644
index 0000000..e316dc3
--- /dev/null
+++ b/apps/api/src/quality-gate-config/dto/update-quality-gate.dto.ts
@@ -0,0 +1,42 @@
+import { IsString, IsOptional, IsBoolean, IsIn, IsInt } from "class-validator";
+
+/**
+ * DTO for updating an existing quality gate
+ */
+export class UpdateQualityGateDto {
+  @IsOptional()
+  @IsString()
+  name?: string;
+
+  @IsOptional()
+  @IsString()
+  description?: string;
+
+  @IsOptional()
+  @IsIn(["build", "lint", "test", "coverage", "custom"])
+  type?: string;
+
+  @IsOptional()
+  @IsString()
+  command?: string;
+
+  @IsOptional()
+  @IsString()
+  expectedOutput?: string;
+
+  @IsOptional()
+  @IsBoolean()
+  isRegex?: boolean;
+
+  @IsOptional()
+  @IsBoolean()
+  required?: boolean;
+
+  @IsOptional()
+  @IsInt()
+  order?: number;
+
+  @IsOptional()
+  @IsBoolean()
+  isEnabled?: boolean;
+}
diff --git a/apps/api/src/quality-gate-config/index.ts b/apps/api/src/quality-gate-config/index.ts
new file mode 100644
index 0000000..41e4c86
--- /dev/null
+++ b/apps/api/src/quality-gate-config/index.ts
@@ -0,0 +1,4 @@
+export * from "./quality-gate-config.module";
+export * from "./quality-gate-config.service";
+export * from "./quality-gate-config.controller";
+export * from "./dto";
diff --git a/apps/api/src/quality-gate-config/quality-gate-config.controller.spec.ts b/apps/api/src/quality-gate-config/quality-gate-config.controller.spec.ts
new file mode 100644
index 0000000..11502f0
--- /dev/null
+++ b/apps/api/src/quality-gate-config/quality-gate-config.controller.spec.ts
@@ -0,0 +1,164 @@
+import { describe, it, expect, beforeEach, vi } from "vitest";
+import { Test, TestingModule } from "@nestjs/testing";
+import { QualityGateConfigController } from "./quality-gate-config.controller";
+import { QualityGateConfigService } from "./quality-gate-config.service";
+
+describe("QualityGateConfigController", () => {
+  let controller: QualityGateConfigController;
+  let service: QualityGateConfigService;
+
+  const mockService = {
+    create: vi.fn(),
+    findAll: vi.fn(),
+    findEnabled: vi.fn(),
+    findOne: vi.fn(),
+    update: vi.fn(),
+    delete: vi.fn(),
+    reorder: vi.fn(),
+    seedDefaults: vi.fn(),
+  };
+
+  const mockWorkspaceId = "550e8400-e29b-41d4-a716-446655440001";
+  const mockGateId = "550e8400-e29b-41d4-a716-446655440002";
+
+  const mockQualityGate = {
+    id: mockGateId,
+    workspaceId: mockWorkspaceId,
+    name: "Build Check",
+    description: "Verify code compiles without errors",
+    type: "build",
+    command: "pnpm build",
+    expectedOutput: null,
+    isRegex: false,
+    required: true,
+    order: 1,
+    isEnabled: true,
+    createdAt: new Date(),
+    updatedAt: new Date(),
+  };
+
+  beforeEach(async () => {
+    const module: TestingModule = await Test.createTestingModule({
+      controllers: [QualityGateConfigController],
+      providers: [
+        {
+          provide: QualityGateConfigService,
+          useValue: mockService,
+        },
+      ],
+    }).compile();
+
+    controller = module.get<QualityGateConfigController>(QualityGateConfigController);
+    service = module.get<QualityGateConfigService>(QualityGateConfigService);
+
+    vi.clearAllMocks();
+  });
+
+  it("should be defined", () => {
+    expect(controller).toBeDefined();
+  });
+
+  describe("findAll", () => {
+    it("should return all quality gates for a workspace", async () => {
+      const mockGates = [mockQualityGate];
+      mockService.findAll.mockResolvedValue(mockGates);
+
+      const result = await controller.findAll(mockWorkspaceId);
+
+      expect(result).toEqual(mockGates);
+      expect(service.findAll).toHaveBeenCalledWith(mockWorkspaceId);
+    });
+  });
+
+  describe("findOne", () => {
+    it("should return a single quality gate", async () => {
+      mockService.findOne.mockResolvedValue(mockQualityGate);
+
+      const result = await controller.findOne(mockWorkspaceId, mockGateId);
+
+      expect(result).toEqual(mockQualityGate);
+      expect(service.findOne).toHaveBeenCalledWith(mockWorkspaceId, mockGateId);
+    });
+  });
+
+  describe("create", () => {
+    it("should create a new quality gate", async () => {
+      const createDto = {
+        name: "Build Check",
+        description: "Verify code compiles without errors",
+        type: "build" as const,
+        command: "pnpm build",
+        required: true,
+        order: 1,
+      };
+
+      mockService.create.mockResolvedValue(mockQualityGate);
+
+      const result = await controller.create(mockWorkspaceId, createDto);
+
+      expect(result).toEqual(mockQualityGate);
+      expect(service.create).toHaveBeenCalledWith(mockWorkspaceId, createDto);
+    });
+  });
+
+  describe("update", () => {
+    it("should update a quality gate", async () => {
+      const updateDto = {
+        name: "Updated Build Check",
+        required: false,
+      };
+
+      const updatedGate = {
+        ...mockQualityGate,
+        ...updateDto,
+      };
+
+      mockService.update.mockResolvedValue(updatedGate);
+
+      const result = await controller.update(mockWorkspaceId, mockGateId, updateDto);
+
+      expect(result).toEqual(updatedGate);
+      expect(service.update).toHaveBeenCalledWith(mockWorkspaceId, mockGateId, updateDto);
+    });
+  });
+
+  describe("delete", () => {
+    it("should delete a quality gate", async () => {
+      mockService.delete.mockResolvedValue(undefined);
+
+      await controller.delete(mockWorkspaceId, mockGateId);
+
+      expect(service.delete).toHaveBeenCalledWith(mockWorkspaceId, mockGateId);
+    });
+  });
+
+  describe("reorder", () => {
+    it("should reorder quality gates", async () => {
+      const gateIds = ["gate1", "gate2", "gate3"];
+      const mockGates = gateIds.map((id, index) => ({
+        ...mockQualityGate,
+        id,
+        order: index,
+      }));
+
+      mockService.reorder.mockResolvedValue(mockGates);
+
+      const result = await controller.reorder(mockWorkspaceId, { gateIds });
+
+      expect(result).toEqual(mockGates);
+      expect(service.reorder).toHaveBeenCalledWith(mockWorkspaceId, gateIds);
+    });
+  });
+
+  describe("seedDefaults", () => {
+    it("should seed default quality gates", async () => {
+      const mockGates = [mockQualityGate];
+      mockService.seedDefaults.mockResolvedValue(mockGates);
+
+      const result = await controller.seedDefaults(mockWorkspaceId);
+
+      expect(result).toEqual(mockGates);
+      expect(service.seedDefaults).toHaveBeenCalledWith(mockWorkspaceId);
+    });
+  });
+});
diff --git a/apps/api/src/quality-gate-config/quality-gate-config.controller.ts b/apps/api/src/quality-gate-config/quality-gate-config.controller.ts
new file mode 100644
index 0000000..ce093e1
--- /dev/null
+++ b/apps/api/src/quality-gate-config/quality-gate-config.controller.ts
@@ -0,0 +1,90 @@
+import { Controller, Get, Post, Patch, Delete, Body, Param, Logger } from "@nestjs/common";
+import { QualityGateConfigService } from "./quality-gate-config.service";
+import { CreateQualityGateDto, UpdateQualityGateDto } from "./dto";
+import type { QualityGate } from "@prisma/client";
+
+/**
+ * Controller for managing quality gate configurations per workspace
+ */
+@Controller("workspaces/:workspaceId/quality-gates")
+export class QualityGateConfigController {
+  private readonly logger = new Logger(QualityGateConfigController.name);
+
+  constructor(private readonly qualityGateConfigService: QualityGateConfigService) {}
+
+  /**
+   * Get all quality gates for a workspace
+   */
+  @Get()
+  async findAll(@Param("workspaceId") workspaceId: string): Promise<QualityGate[]> {
+    this.logger.debug(`GET /workspaces/${workspaceId}/quality-gates`);
+    return this.qualityGateConfigService.findAll(workspaceId);
+  }
+
+  /**
+   * Get a specific quality gate
+   */
+  @Get(":id")
+  async findOne(
+    @Param("workspaceId") workspaceId: string,
+    @Param("id") id: string
+  ): Promise<QualityGate> {
+    this.logger.debug(`GET /workspaces/${workspaceId}/quality-gates/${id}`);
+    return this.qualityGateConfigService.findOne(workspaceId, id);
+  }
+
+  /**
+   * Create a new quality gate
+   */
+  @Post()
+  async create(
+    @Param("workspaceId") workspaceId: string,
+    @Body() createDto: CreateQualityGateDto
+  ): Promise<QualityGate> {
+    this.logger.log(`POST /workspaces/${workspaceId}/quality-gates`);
+    return this.qualityGateConfigService.create(workspaceId, createDto);
+  }
+
+  /**
+   * Update a quality gate
+   */
+  @Patch(":id")
+  async update(
+    @Param("workspaceId") workspaceId: string,
+    @Param("id") id: string,
+    @Body() updateDto: UpdateQualityGateDto
+  ): Promise<QualityGate> {
+    this.logger.log(`PATCH /workspaces/${workspaceId}/quality-gates/${id}`);
+    return this.qualityGateConfigService.update(workspaceId, id, updateDto);
+  }
+
+  /**
+   * Delete a quality gate
+   */
+  @Delete(":id")
+  async delete(@Param("workspaceId") workspaceId: string, @Param("id") id: string): Promise<void> {
+    this.logger.log(`DELETE /workspaces/${workspaceId}/quality-gates/${id}`);
+    return this.qualityGateConfigService.delete(workspaceId, id);
+  }
+
+  /**
+   * Reorder quality gates
+   */
+  @Post("reorder")
+  async reorder(
+    @Param("workspaceId") workspaceId: string,
+    @Body() body: { gateIds: string[] }
+  ): Promise<QualityGate[]> {
+    this.logger.log(`POST /workspaces/${workspaceId}/quality-gates/reorder`);
+    return this.qualityGateConfigService.reorder(workspaceId, body.gateIds);
+  }
+
+  /**
+   * Seed default quality gates for a workspace
+   */
+  @Post("seed-defaults")
+  async seedDefaults(@Param("workspaceId") workspaceId: string): Promise<QualityGate[]> {
+    this.logger.log(`POST /workspaces/${workspaceId}/quality-gates/seed-defaults`);
+    return this.qualityGateConfigService.seedDefaults(workspaceId);
+  }
+}
diff --git a/apps/api/src/quality-gate-config/quality-gate-config.module.ts b/apps/api/src/quality-gate-config/quality-gate-config.module.ts
new file mode 100644
index 0000000..9dbe9ea
--- /dev/null
+++ b/apps/api/src/quality-gate-config/quality-gate-config.module.ts
@@ -0,0 +1,15 @@
+import { Module } from "@nestjs/common";
+import { QualityGateConfigController } from "./quality-gate-config.controller";
+import { QualityGateConfigService } from "./quality-gate-config.service";
+import { PrismaModule } from "../prisma/prisma.module";
+
+/**
+ * Module for managing quality gate configurations
+ */
+@Module({
+  imports: [PrismaModule],
+  controllers: [QualityGateConfigController],
+  providers: [QualityGateConfigService],
+  exports: [QualityGateConfigService],
+})
+export class QualityGateConfigModule {}
diff --git a/apps/api/src/quality-gate-config/quality-gate-config.service.spec.ts b/apps/api/src/quality-gate-config/quality-gate-config.service.spec.ts
new file mode 100644
index 0000000..2b35df4
--- /dev/null
+++ b/apps/api/src/quality-gate-config/quality-gate-config.service.spec.ts
@@ -0,0 +1,362 @@
+import { describe, it, expect, beforeEach, vi } from "vitest";
+import { Test, TestingModule } from "@nestjs/testing";
+import { QualityGateConfigService } from "./quality-gate-config.service";
+import { PrismaService } from "../prisma/prisma.service";
+import { NotFoundException, ConflictException } from "@nestjs/common";
+
+describe("QualityGateConfigService", () => {
+  let service: QualityGateConfigService;
+  let prisma: PrismaService;
+
+  const mockPrismaService = {
+    qualityGate: {
+      create: vi.fn(),
+      findMany: vi.fn(),
+      findUnique: vi.fn(),
+      update: vi.fn(),
+      delete: vi.fn(),
+      count: vi.fn(),
+    },
+    $transaction: vi.fn(),
+  };
+
+  const mockWorkspaceId = "550e8400-e29b-41d4-a716-446655440001";
+  const mockGateId = "550e8400-e29b-41d4-a716-446655440002";
+
+  const mockQualityGate = {
+    id: mockGateId,
+    workspaceId: mockWorkspaceId,
+    name: "Build Check",
+    description: "Verify code compiles without errors",
+    type: "build",
+    command: "pnpm build",
+    expectedOutput: null,
+    isRegex: false,
+    required: true,
+    order: 1,
+    isEnabled: true,
+    createdAt: new Date(),
+    updatedAt: new Date(),
+  };
+
+  beforeEach(async () => {
+    const module: TestingModule = await Test.createTestingModule({
+      providers: [
+        QualityGateConfigService,
+        {
+          provide: PrismaService,
+          useValue: mockPrismaService,
+        },
+      ],
+    }).compile();
+
+    service = module.get<QualityGateConfigService>(QualityGateConfigService);
+    prisma = module.get<PrismaService>(PrismaService);
+
+    vi.clearAllMocks();
+  });
+
+  it("should be defined", () => {
+    expect(service).toBeDefined();
+  });
+
+  describe("create", () => {
+    it("should create a quality gate successfully", async () => {
+      const createDto = {
+        name: "Build Check",
+        description: "Verify code compiles without errors",
+        type: "build" as const,
+        command: "pnpm build",
+        required: true,
+        order: 1,
+      };
+
+      mockPrismaService.qualityGate.create.mockResolvedValue(mockQualityGate);
+
+      const result = await service.create(mockWorkspaceId, createDto);
+
+      expect(result).toEqual(mockQualityGate);
+      expect(prisma.qualityGate.create).toHaveBeenCalledWith({
+        data: {
+          workspaceId: mockWorkspaceId,
+          name: createDto.name,
+          description: createDto.description,
+          type: createDto.type,
+          command: createDto.command,
+          expectedOutput: null,
+          isRegex: false,
+          required: true,
+          order: 1,
+          isEnabled: true,
+        },
+      });
+    });
+
+    it("should use default values when optional fields are not provided", async () => {
+      const createDto = {
+        name: "Test Gate",
+        type: "test" as const,
+      };
+
+      mockPrismaService.qualityGate.create.mockResolvedValue({
+        ...mockQualityGate,
+        name: createDto.name,
+        type: createDto.type,
+      });
+
+      await service.create(mockWorkspaceId, createDto);
+
+      expect(prisma.qualityGate.create).toHaveBeenCalledWith({
+        data: {
+          workspaceId: mockWorkspaceId,
+          name: createDto.name,
+          description: null,
+          type: createDto.type,
+          command: null,
+          expectedOutput: null,
+          isRegex: false,
+          required: true,
+          order: 0,
+          isEnabled: true,
+        },
+      });
+    });
+  });
+
+  describe("findAll", () => {
+    it("should return all quality gates for a workspace", async () => {
+      const mockGates = [mockQualityGate];
+      mockPrismaService.qualityGate.findMany.mockResolvedValue(mockGates);
+
+      const result = await service.findAll(mockWorkspaceId);
+
+      expect(result).toEqual(mockGates);
+      expect(prisma.qualityGate.findMany).toHaveBeenCalledWith({
+        where: { workspaceId: mockWorkspaceId },
+        orderBy: { order: "asc" },
+      });
+    });
+
+    it("should return empty array when no gates exist", async () => {
+      mockPrismaService.qualityGate.findMany.mockResolvedValue([]);
+
+      const result = await service.findAll(mockWorkspaceId);
+
+      expect(result).toEqual([]);
+    });
+  });
+
+  describe("findEnabled", () => {
+    it("should return only enabled quality gates ordered by priority", async () => {
+      const mockGates = [mockQualityGate];
+      mockPrismaService.qualityGate.findMany.mockResolvedValue(mockGates);
+
+      const result = await service.findEnabled(mockWorkspaceId);
+
+      expect(result).toEqual(mockGates);
+      expect(prisma.qualityGate.findMany).toHaveBeenCalledWith({
+        where: {
+          workspaceId: mockWorkspaceId,
+          isEnabled: true,
+        },
+        orderBy: { order: "asc" },
+      });
+    });
+  });
+
+  describe("findOne", () => {
+    it("should return a quality gate by id", async () => {
+      mockPrismaService.qualityGate.findUnique.mockResolvedValue(mockQualityGate);
+
+      const result = await service.findOne(mockWorkspaceId, mockGateId);
+
+      expect(result).toEqual(mockQualityGate);
+      expect(prisma.qualityGate.findUnique).toHaveBeenCalledWith({
+        where: {
+          id: mockGateId,
+          workspaceId: mockWorkspaceId,
+        },
+      });
+    });
+
+    it("should throw NotFoundException when gate does not exist", async () => {
+      mockPrismaService.qualityGate.findUnique.mockResolvedValue(null);
+
+      await expect(service.findOne(mockWorkspaceId, mockGateId)).rejects.toThrow(NotFoundException);
+    });
+  });
+
+  describe("update", () => {
+    it("should update a quality gate successfully", async () => {
+      const updateDto = {
+        name: "Updated Build Check",
+        required: false,
+      };
+
+      const updatedGate = {
+        ...mockQualityGate,
+        ...updateDto,
+      };
+
+      mockPrismaService.qualityGate.findUnique.mockResolvedValue(mockQualityGate);
+      mockPrismaService.qualityGate.update.mockResolvedValue(updatedGate);
+
+      const result = await service.update(mockWorkspaceId, mockGateId, updateDto);
+
+      expect(result).toEqual(updatedGate);
+      expect(prisma.qualityGate.update).toHaveBeenCalledWith({
+        where: { id: mockGateId },
+        data: updateDto,
+      });
+    });
+
+    it("should throw NotFoundException when gate does not exist", async () => {
+      const updateDto = { name: "Updated" };
+      mockPrismaService.qualityGate.findUnique.mockResolvedValue(null);
+
+      await expect(service.update(mockWorkspaceId, mockGateId, updateDto)).rejects.toThrow(
+        NotFoundException
+      );
+    });
+  });
+
+  describe("delete", () => {
+    it("should delete a quality gate successfully", async () => {
+      mockPrismaService.qualityGate.findUnique.mockResolvedValue(mockQualityGate);
+      mockPrismaService.qualityGate.delete.mockResolvedValue(mockQualityGate);
+
+      await service.delete(mockWorkspaceId, mockGateId);
+
+      expect(prisma.qualityGate.delete).toHaveBeenCalledWith({
+        where: { id: mockGateId },
+      });
+    });
+
+    it("should throw NotFoundException when gate does not exist", async () => {
+      mockPrismaService.qualityGate.findUnique.mockResolvedValue(null);
+
+      await expect(service.delete(mockWorkspaceId, mockGateId)).rejects.toThrow(NotFoundException);
+    });
+  });
+
+  describe("reorder", () => {
+    it("should reorder gates successfully", async () => {
+      const gateIds = ["gate1", "gate2", "gate3"];
+      const mockGates = gateIds.map((id, index) => ({
+        ...mockQualityGate,
+        id,
+        order: index,
+      }));
+
+      mockPrismaService.$transaction.mockImplementation((callback) => {
+        return callback(mockPrismaService);
+      });
+
+      mockPrismaService.qualityGate.update.mockResolvedValue(mockGates[0]);
+      mockPrismaService.qualityGate.findMany.mockResolvedValue(mockGates);
+
+      const result = await service.reorder(mockWorkspaceId, gateIds);
+
+      expect(result).toEqual(mockGates);
+      expect(prisma.$transaction).toHaveBeenCalled();
+    });
+  });
+
+  describe("seedDefaults", () => {
+    it("should seed default quality gates for a workspace", async () => {
+      const mockDefaultGates = [
+        {
+          id: "1",
+          workspaceId: mockWorkspaceId,
+          name: "Build Check",
+          description: null,
+          type: "build",
+          command: "pnpm build",
+          expectedOutput: null,
+          isRegex: false,
+          required: true,
+          order: 1,
+          isEnabled: true,
+          createdAt: new Date(),
+          updatedAt: new Date(),
+        },
+        {
+          id: "2",
+          workspaceId: mockWorkspaceId,
+          name: "Lint Check",
+          description: null,
+          type: "lint",
+          command: "pnpm lint",
+          expectedOutput: null,
+          isRegex: false,
+          required: true,
+          order: 2,
+          isEnabled: true,
+          createdAt: new Date(),
+          updatedAt: new Date(),
+        },
+      ];
+
+      mockPrismaService.$transaction.mockImplementation((callback) => {
+        return callback(mockPrismaService);
+      });
+
+      mockPrismaService.qualityGate.create.mockImplementation((args) =>
+        Promise.resolve({
+          ...mockDefaultGates[0],
+          ...args.data,
+        })
+      );
+
+      mockPrismaService.qualityGate.findMany.mockResolvedValue(mockDefaultGates);
+
+      const result = await service.seedDefaults(mockWorkspaceId);
+
+      expect(result.length).toBeGreaterThan(0);
+      expect(prisma.$transaction).toHaveBeenCalled();
+    });
+  });
+
+  describe("toOrchestratorFormat", () => {
+    it("should convert database gates to orchestrator format", () => {
+      const gates = [mockQualityGate];
+
+      const result = service.toOrchestratorFormat(gates);
+
+      expect(result).toHaveLength(1);
+      expect(result[0]).toMatchObject({
+        id: mockQualityGate.id,
+        name: mockQualityGate.name,
+        description: mockQualityGate.description,
+        type: mockQualityGate.type,
+        command: mockQualityGate.command,
+        required: mockQualityGate.required,
+        order: mockQualityGate.order,
+      });
+    });
+
+    it("should handle regex patterns correctly", () => {
+      const gateWithRegex = {
+        ...mockQualityGate,
+        expectedOutput: "Coverage: (\\d+)%",
+        isRegex: true,
+      };
+
+      const result = service.toOrchestratorFormat([gateWithRegex]);
+
+      expect(result[0]?.expectedOutput).toBeInstanceOf(RegExp);
+    });
+
+    it("should handle string patterns correctly", () => {
+      const gateWithString = {
+        ...mockQualityGate,
+        expectedOutput: "All tests passed",
+        isRegex: false,
+      };
+
+      const result = service.toOrchestratorFormat([gateWithString]);
+
+      expect(typeof result[0]?.expectedOutput).toBe("string");
+    });
+  });
+});
diff --git a/apps/api/src/quality-gate-config/quality-gate-config.service.ts b/apps/api/src/quality-gate-config/quality-gate-config.service.ts
new file mode 100644
index 0000000..5ec7ad2
--- /dev/null
+++ b/apps/api/src/quality-gate-config/quality-gate-config.service.ts
@@ -0,0 +1,237 @@
+import { Injectable, Logger, NotFoundException } from "@nestjs/common";
+import { PrismaService } from "../prisma/prisma.service";
+import { CreateQualityGateDto, UpdateQualityGateDto } from "./dto";
+import type { QualityGate as PrismaQualityGate } from "@prisma/client";
+import type { QualityGate } from "../quality-orchestrator/interfaces";
+
+/**
+ * Default quality gates to seed for new workspaces
+ */
+const DEFAULT_GATES = [
+  {
+    name: "Build Check",
+    type: "build",
+    command: "pnpm build",
+    required: true,
+    order: 1,
+  },
+  {
+    name: "Lint Check",
+    type: "lint",
+    command: "pnpm lint",
+    required: true,
+    order: 2,
+  },
+  {
+    name: "Test Suite",
+    type: "test",
+    command: "pnpm test",
+    required: true,
+    order: 3,
+  },
+  {
+    name: "Coverage Check",
+    type: "coverage",
+    command: "pnpm test:coverage",
+    expectedOutput: "85",
+    required: false,
+    order: 4,
+  },
+];
+
+/**
+ * Service for managing quality gate configurations per workspace
+ */
+@Injectable()
+export class QualityGateConfigService {
+  private readonly logger = new Logger(QualityGateConfigService.name);
+
+  constructor(private readonly prisma: PrismaService) {}
+
+  /**
+   * Create a quality gate for a workspace
+   */
+  async create(workspaceId: string, dto: CreateQualityGateDto): Promise<PrismaQualityGate> {
+    this.logger.log(`Creating quality gate "${dto.name}" for workspace ${workspaceId}`);
+
+    return this.prisma.qualityGate.create({
+      data: {
+        workspaceId,
+        name: dto.name,
+        description: dto.description ?? null,
+        type: dto.type,
+        command: dto.command ?? null,
+        expectedOutput: dto.expectedOutput ?? null,
+        isRegex: dto.isRegex ?? false,
+        required: dto.required ?? true,
+        order: dto.order ?? 0,
+        isEnabled: true,
+      },
+    });
+  }
+
+  /**
+   * Get all gates for a workspace
+   */
+  async findAll(workspaceId: string): Promise<PrismaQualityGate[]> {
+    this.logger.debug(`Finding all quality gates for workspace ${workspaceId}`);
+
+    return this.prisma.qualityGate.findMany({
+      where: { workspaceId },
+      orderBy: { order: "asc" },
+    });
+  }
+
+  /**
+   * Get enabled gates ordered by priority
+   */
+  async findEnabled(workspaceId: string): Promise<PrismaQualityGate[]> {
+    this.logger.debug(`Finding enabled quality gates for workspace ${workspaceId}`);
+
+    return this.prisma.qualityGate.findMany({
+      where: {
+        workspaceId,
+        isEnabled: true,
+      },
+      orderBy: { order: "asc" },
+    });
+  }
+
+  /**
+   * Get a specific gate
+   */
+  async findOne(workspaceId: string, id: string): Promise<PrismaQualityGate> {
+    this.logger.debug(`Finding quality gate ${id} for workspace ${workspaceId}`);
+
+    const gate = await this.prisma.qualityGate.findUnique({
+      where: {
+        id,
+        workspaceId,
+      },
+    });
+
+    if (!gate) {
+      throw new NotFoundException(`Quality gate with ID ${id} not found`);
+    }
+
+    return gate;
+  }
+
+  /**
+   * Update a gate
+   */
+  async update(
+    workspaceId: string,
+    id: string,
+    dto: UpdateQualityGateDto
+  ): Promise<PrismaQualityGate> {
+    this.logger.log(`Updating quality gate ${id} for workspace ${workspaceId}`);
+
+    // Verify gate exists and belongs to workspace
+    await this.findOne(workspaceId, id);
+
+    return this.prisma.qualityGate.update({
+      where: { id },
+      data: dto,
+    });
+  }
+
+  /**
+   * Delete a gate
+   */
+  async delete(workspaceId: string, id: string): Promise<void> {
+    this.logger.log(`Deleting quality gate ${id} for workspace ${workspaceId}`);
+
+    // Verify gate exists and belongs to workspace
+    await this.findOne(workspaceId, id);
+
+    await this.prisma.qualityGate.delete({
+      where: { id },
+    });
+  }
+
+  /**
+   * Reorder gates
+   */
+  async reorder(workspaceId: string, gateIds: string[]): Promise<PrismaQualityGate[]> {
+    this.logger.log(`Reordering quality gates for workspace ${workspaceId}`);
+
+    await this.prisma.$transaction(async (tx) => {
+      for (let i = 0; i < gateIds.length; i++) {
+        const gateId = gateIds[i];
+        if (!gateId) continue;
+
+        await tx.qualityGate.update({
+          where: { id: gateId },
+          data: { order: i },
+        });
+      }
+    });
+
+    return this.findAll(workspaceId);
+  }
+
+  /**
+   * Seed default gates for a workspace
+   */
+  async seedDefaults(workspaceId: string): Promise<PrismaQualityGate[]> {
+    this.logger.log(`Seeding default quality gates for workspace ${workspaceId}`);
+
+    await this.prisma.$transaction(async (tx) => {
+      for (const gate of DEFAULT_GATES) {
+        await tx.qualityGate.create({
+          data: {
+            workspaceId,
+            name: gate.name,
+            type: gate.type,
+            command: gate.command,
+            expectedOutput: gate.expectedOutput ?? null,
+            required: gate.required,
+            order: gate.order,
+            isEnabled: true,
+          },
+        });
+      }
+    });
+
+    return this.findAll(workspaceId);
+  }
+
+  /**
+   * Convert database gates to orchestrator format
+   */
+  toOrchestratorFormat(gates: PrismaQualityGate[]): QualityGate[] {
+    return gates.map((gate) => {
+      const result: QualityGate = {
+        id: gate.id,
+        name: gate.name,
+        description: gate.description ?? "",
+        type: gate.type as "test" | "lint" | "build" | "coverage" | "custom",
+        required: gate.required,
+        order: gate.order,
+      };
+
+      // Only add optional properties if they exist
+      if (gate.command) {
+        result.command = gate.command;
+      }
+
+      if (gate.expectedOutput) {
+        if (gate.isRegex) {
+          // Safe regex construction with try-catch - pattern is from trusted database source
+          try {
+            // eslint-disable-next-line security/detect-non-literal-regexp
+            result.expectedOutput = new RegExp(gate.expectedOutput);
+          } catch {
+            this.logger.warn(`Invalid regex pattern for gate ${gate.id}: ${gate.expectedOutput}`);
+            result.expectedOutput = gate.expectedOutput;
+          }
+        } else {
+          result.expectedOutput = gate.expectedOutput;
+        }
+      }
+
+      return result;
+    });
+  }
+}