diff --git a/packages/api/src/__tests__/assistant-tools-project-cover-generate.test.ts b/packages/api/src/__tests__/assistant-tools-project-cover-generate.test.ts
new file mode 100644
index 0000000..7936f59
--- /dev/null
+++ b/packages/api/src/__tests__/assistant-tools-project-cover-generate.test.ts
@@ -0,0 +1,143 @@
+import { beforeEach, describe, expect, it, vi } from "vitest";
+import { PermissionKey, SystemRole } from "@capakraken/shared";
+
+vi.mock("@capakraken/application", async (importOriginal) => {
+  const actual = await importOriginal<typeof import("@capakraken/application")>();
+  return {
+    ...actual,
+    approveEstimateVersion: vi.fn(),
+    cloneEstimate: vi.fn(),
+    commitDispoImportBatch: vi.fn(),
+    countPlanningEntries: vi.fn().mockResolvedValue({ countsByRoleId: new Map() }),
+    createEstimateExport: vi.fn(),
+    createEstimatePlanningHandoff: vi.fn(),
+    createEstimateRevision: vi.fn(),
+    assessDispoImportReadiness: vi.fn(),
+    loadResourceDailyAvailabilityContexts: vi.fn().mockResolvedValue(new Map()),
+    getDashboardDemand: vi.fn().mockResolvedValue([]),
+    getDashboardBudgetForecast: vi.fn().mockResolvedValue([]),
+    getDashboardOverview: vi.fn(),
+    getDashboardSkillGapSummary: vi.fn().mockResolvedValue({
+      roleGaps: [],
+      totalOpenPositions: 0,
+      skillSupplyTop10: [],
+      resourcesByRole: [],
+    }),
+    getDashboardProjectHealth: vi.fn().mockResolvedValue([]),
+    getDashboardPeakTimes: vi.fn().mockResolvedValue([]),
+    getDashboardTopValueResources: vi.fn().mockResolvedValue([]),
+    getEstimateById: vi.fn(),
+    listAssignmentBookings: vi.fn().mockResolvedValue([]),
+    stageDispoImportBatch: vi.fn(),
+    submitEstimateVersion: vi.fn(),
+    updateEstimateDraft: vi.fn(),
+  };
+});
+
+vi.mock("../ai-client.js", async (importOriginal) => {
+  const actual = await importOriginal<typeof import("../ai-client.js")>();
+  return {
+    ...actual,
+    createDalleClient: vi.fn(() => ({
+      images: {
+        generate: vi.fn().mockResolvedValue({
+          data: [{ b64_json: "ZmFrZQ==" }],
+        }),
+      },
+    })),
+    loggedAiCall: vi.fn(async (_provider, _model, _promptLength, fn) => fn()),
+  };
+});
+
+import {
+  createToolContext,
+  executeTool,
+} from "./assistant-tools-project-media-test-helpers.js";
+
+describe("assistant project cover generation tools", () => {
+  beforeEach(() => {
+    vi.clearAllMocks();
+  });
+
+  it("routes project cover generation through the real project router path", async () => {
+    const projectFindUnique = vi.fn()
+      .mockResolvedValueOnce({
+        id: "project_1",
+        name: "Project One",
+        shortCode: "PROJ-1",
+        status: "ACTIVE",
+        orderType: "CHARGEABLE",
+        allocationType: "INT",
+        budgetCents: 0,
+        winProbability: 100,
+        startDate: new Date("2026-05-01T00:00:00.000Z"),
+        endDate: new Date("2026-06-30T00:00:00.000Z"),
+        responsiblePerson: "Peter Parker",
+        client: null,
+        utilizationCategory: null,
+        _count: { assignments: 0, estimates: 0 },
+      })
+      .mockResolvedValueOnce({
+        id: "project_1",
+        name: "Project One",
+        client: { name: "Wayne Enterprises" },
+      });
+    const projectUpdate = vi.fn().mockResolvedValue({
+      id: "project_1",
+      coverImageUrl: "data:image/png;base64,ZmFrZQ==",
+    });
+    const ctx = createToolContext(
+      {
+        project: {
+          findUnique: projectFindUnique,
+          update: projectUpdate,
+        },
+        assignment: {
+          findMany: vi.fn().mockResolvedValue([]),
+        },
+        systemSettings: {
+          findUnique: vi.fn().mockResolvedValue({
+            id: "singleton",
+            imageProvider: "dalle",
+            aiProvider: "openai",
+            azureOpenAiApiKey: "sk-test",
+            azureOpenAiDeployment: "gpt-4o-mini",
+          }),
+        },
+      },
+      {
+        userRole: SystemRole.ADMIN,
+        permissions: [PermissionKey.MANAGE_PROJECTS],
+      },
+    );
+
+    const result = await executeTool(
+      "generate_project_cover",
+      JSON.stringify({ projectId: "project_1", prompt: "Blue studio lighting" }),
+      ctx,
+    );
+
+    expect(projectUpdate).toHaveBeenCalledWith({
+      where: { id: "project_1" },
+      data: { coverImageUrl: "data:image/png;base64,ZmFrZQ==" },
+    });
+    expect(projectFindUnique).toHaveBeenCalledWith({
+      where: { id: "project_1" },
+      select: expect.objectContaining({
+        id: true,
+        shortCode: true,
+        name: true,
+        status: true,
+        responsiblePerson: true,
+        startDate: true,
+        endDate: true,
+      }),
+    });
+    expect(JSON.parse(result.content)).toEqual(
+      expect.objectContaining({
+        success: true,
+        message: 'Generated cover art for project "Project One"',
+      }),
+    );
+  });
+});
diff --git a/packages/api/src/__tests__/assistant-tools-project-cover-remove.test.ts b/packages/api/src/__tests__/assistant-tools-project-cover-remove.test.ts
new file mode 100644
index 0000000..617ec58
--- /dev/null
+++ b/packages/api/src/__tests__/assistant-tools-project-cover-remove.test.ts
@@ -0,0 +1,133 @@
+import { beforeEach, describe, expect, it, vi } from "vitest";
+import { PermissionKey, SystemRole } from "@capakraken/shared";
+
+vi.mock("@capakraken/application", async (importOriginal) => {
+  const actual = await importOriginal<typeof import("@capakraken/application")>();
+  return {
+    ...actual,
+    approveEstimateVersion: vi.fn(),
+    cloneEstimate: vi.fn(),
+    commitDispoImportBatch: vi.fn(),
+    countPlanningEntries: vi.fn().mockResolvedValue({ countsByRoleId: new Map() }),
+    createEstimateExport: vi.fn(),
+    createEstimatePlanningHandoff: vi.fn(),
+    createEstimateRevision: vi.fn(),
+    assessDispoImportReadiness: vi.fn(),
+    loadResourceDailyAvailabilityContexts: vi.fn().mockResolvedValue(new Map()),
+    getDashboardDemand: vi.fn().mockResolvedValue([]),
+    getDashboardBudgetForecast: vi.fn().mockResolvedValue([]),
+    getDashboardOverview: vi.fn(),
+    getDashboardSkillGapSummary: vi.fn().mockResolvedValue({
+      roleGaps: [],
+      totalOpenPositions: 0,
+      skillSupplyTop10: [],
+      resourcesByRole: [],
+    }),
+    getDashboardProjectHealth: vi.fn().mockResolvedValue([]),
+    getDashboardPeakTimes: vi.fn().mockResolvedValue([]),
+    getDashboardTopValueResources: vi.fn().mockResolvedValue([]),
+    getEstimateById: vi.fn(),
+    listAssignmentBookings: vi.fn().mockResolvedValue([]),
+    stageDispoImportBatch: vi.fn(),
+    submitEstimateVersion: vi.fn(),
+    updateEstimateDraft: vi.fn(),
+  };
+});
+
+vi.mock("../ai-client.js", async (importOriginal) => {
+  const actual = await importOriginal<typeof import("../ai-client.js")>();
+  return {
+    ...actual,
+    createDalleClient: vi.fn(() => ({
+      images: {
+        generate: vi.fn().mockResolvedValue({
+          data: [{ b64_json: "ZmFrZQ==" }],
+        }),
+      },
+    })),
+    loggedAiCall: vi.fn(async (_provider, _model, _promptLength, fn) => fn()),
+  };
+});
+
+import {
+  createToolContext,
+  executeTool,
+} from "./assistant-tools-project-media-test-helpers.js";
+
+describe("assistant project cover removal tools", () => {
+  beforeEach(() => {
+    vi.clearAllMocks();
+  });
+
+  it("routes project cover removal through the real project router path", async () => {
+    const projectFindUnique = vi.fn()
+      .mockResolvedValueOnce({
+        id: "project_1",
+        name: "Project One",
+        shortCode: "PROJ-1",
+        status: "ACTIVE",
+        orderType: "CHARGEABLE",
+        allocationType: "INT",
+        budgetCents: 0,
+        winProbability: 100,
+        startDate: new Date("2026-05-01T00:00:00.000Z"),
+        endDate: new Date("2026-06-30T00:00:00.000Z"),
+        responsiblePerson: "Peter Parker",
+        client: null,
+        utilizationCategory: null,
+        _count: { assignments: 0, estimates: 0 },
+      })
+      .mockResolvedValueOnce({
+        id: "project_1",
+        name: "Project One",
+      });
+    const projectUpdate = vi.fn().mockResolvedValue({
+      id: "project_1",
+      coverImageUrl: null,
+    });
+    const ctx = createToolContext(
+      {
+        project: {
+          findUnique: projectFindUnique,
+          update: projectUpdate,
+        },
+        assignment: {
+          findMany: vi.fn().mockResolvedValue([]),
+        },
+      },
+      {
+        userRole: SystemRole.ADMIN,
+        permissions: [PermissionKey.MANAGE_PROJECTS],
+      },
+    );
+
+    const result = await executeTool(
+      "remove_project_cover",
+      JSON.stringify({ projectId: "project_1" }),
+      ctx,
+    );
+
+    expect(projectUpdate).toHaveBeenCalledWith({
+      where: { id: "project_1" },
+      data: { coverImageUrl: null },
+    });
+    expect(projectFindUnique).toHaveBeenCalledWith({
+      where: { id: "project_1" },
+      select: expect.objectContaining({
+        id: true,
+        shortCode: true,
+        name: true,
+        status: true,
+        responsiblePerson: true,
+        startDate: true,
+        endDate: true,
+      }),
+    });
+    expect(JSON.parse(result.content)).toEqual(
+      expect.objectContaining({
+        success: true,
+        message: 'Removed cover art from project "Project One"',
+      }),
+    );
+  });
+});
diff --git a/packages/api/src/__tests__/assistant-tools-project-media-test-helpers.ts b/packages/api/src/__tests__/assistant-tools-project-media-test-helpers.ts
new file mode 100644
index 0000000..c7e9745
--- /dev/null
+++ b/packages/api/src/__tests__/assistant-tools-project-media-test-helpers.ts
@@ -0,0 +1,34 @@
+import { PermissionKey, SystemRole } from "@capakraken/shared";
+
+import {
+  executeTool as executeAssistantTool,
+  type ToolContext,
+} from "../router/assistant-tools.js";
+
+export function createToolContext(
+  db: Record<string, unknown>,
+  options?: {
+    permissions?: PermissionKey[];
+    userRole?: SystemRole;
+  },
+): ToolContext {
+  const userRole = options?.userRole ?? SystemRole.ADMIN;
+  return {
+    db: db as ToolContext["db"],
+    userId: "user_1",
+    userRole,
+    permissions: new Set(options?.permissions ?? []),
+    session: {
+      user: { email: "assistant@example.com", name: "Assistant User", image: null },
+      expires: "2026-03-29T00:00:00.000Z",
+    },
+    dbUser: {
+      id: "user_1",
+      systemRole: userRole,
+      permissionOverrides: null,
+    },
+    roleDefaults: null,
+  };
+}
+
+export const executeTool = executeAssistantTool;