diff --git a/packages/shared/src/index.ts b/packages/shared/src/index.ts
index 83e5ff79..72a522f4 100644
--- a/packages/shared/src/index.ts
+++ b/packages/shared/src/index.ts
@@ -176,6 +176,7 @@ export type {
   CompanySkillProjectScanRequest,
   CompanySkillProjectScanSkipped,
   CompanySkillProjectScanConflict,
+  CompanySkillProjectScanPruned,
   CompanySkillProjectScanResult,
   CompanySkillCreateRequest,
   CompanySkillFileDetail,
@@ -561,6 +562,7 @@ export {
   companySkillProjectScanRequestSchema,
   companySkillProjectScanSkippedSchema,
   companySkillProjectScanConflictSchema,
+  companySkillProjectScanPrunedSchema,
   companySkillProjectScanResultSchema,
   companySkillCreateSchema,
   companySkillFileDetailSchema,
diff --git a/packages/shared/src/types/company-skill.ts b/packages/shared/src/types/company-skill.ts
index 12834083..69edaa1f 100644
--- a/packages/shared/src/types/company-skill.ts
+++ b/packages/shared/src/types/company-skill.ts
@@ -93,6 +93,7 @@ export interface CompanySkillImportResult {
 export interface CompanySkillProjectScanRequest {
   projectIds?: string[];
   workspaceIds?: string[];
+  dryRun?: boolean;
 }
 
 export interface CompanySkillProjectScanSkipped {
@@ -118,6 +119,14 @@ export interface CompanySkillProjectScanConflict {
   reason: string;
 }
 
+export interface CompanySkillProjectScanPruned {
+  skillId: string;
+  slug: string;
+  key: string;
+  sourceLocator: string | null;
+  affectedAgents: string[];
+}
+
 export interface CompanySkillProjectScanResult {
   scannedProjects: number;
   scannedWorkspaces: number;
@@ -126,7 +135,9 @@ export interface CompanySkillProjectScanResult {
   updated: CompanySkill[];
   skipped: CompanySkillProjectScanSkipped[];
   conflicts: CompanySkillProjectScanConflict[];
+  pruned: CompanySkillProjectScanPruned[];
   warnings: string[];
+  dryRun: boolean;
 }
 
 export interface CompanySkillCreateRequest {
diff --git a/packages/shared/src/types/index.ts b/packages/shared/src/types/index.ts
index 888740d3..d1c56aca 100644
--- a/packages/shared/src/types/index.ts
+++ b/packages/shared/src/types/index.ts
@@ -28,6 +28,7 @@ export type {
   CompanySkillProjectScanRequest,
   CompanySkillProjectScanSkipped,
   CompanySkillProjectScanConflict,
+  CompanySkillProjectScanPruned,
   CompanySkillProjectScanResult,
   CompanySkillCreateRequest,
   CompanySkillFileDetail,
diff --git a/packages/shared/src/validators/company-skill.ts b/packages/shared/src/validators/company-skill.ts
index 58b9165d..8739ccf4 100644
--- a/packages/shared/src/validators/company-skill.ts
+++ b/packages/shared/src/validators/company-skill.ts
@@ -76,6 +76,7 @@ export const companySkillUpdateAuthSchema = z.object({
 export const companySkillProjectScanRequestSchema = z.object({
   projectIds: z.array(z.string().uuid()).optional(),
   workspaceIds: z.array(z.string().uuid()).optional(),
+  dryRun: z.boolean().optional(),
 });
 
 export const companySkillProjectScanSkippedSchema = z.object({
@@ -101,6 +102,14 @@ export const companySkillProjectScanConflictSchema = z.object({
   reason: z.string().min(1),
 });
 
+export const companySkillProjectScanPrunedSchema = z.object({
+  skillId: z.string().uuid(),
+  slug: z.string().min(1),
+  key: z.string().min(1),
+  sourceLocator: z.string().nullable(),
+  affectedAgents: z.array(z.string()),
+});
+
 export const companySkillProjectScanResultSchema = z.object({
   scannedProjects: z.number().int().nonnegative(),
   scannedWorkspaces: z.number().int().nonnegative(),
@@ -109,7 +118,9 @@ export const companySkillProjectScanResultSchema = z.object({
   updated: z.array(companySkillSchema),
   skipped: z.array(companySkillProjectScanSkippedSchema),
   conflicts: z.array(companySkillProjectScanConflictSchema),
+  pruned: z.array(companySkillProjectScanPrunedSchema),
   warnings: z.array(z.string()),
+  dryRun: z.boolean(),
 });
 
 export const companySkillCreateSchema = z.object({
diff --git a/packages/shared/src/validators/index.ts b/packages/shared/src/validators/index.ts
index d1bc3929..7e72c9fb 100644
--- a/packages/shared/src/validators/index.ts
+++ b/packages/shared/src/validators/index.ts
@@ -48,6 +48,7 @@ export {
   companySkillProjectScanRequestSchema,
   companySkillProjectScanSkippedSchema,
   companySkillProjectScanConflictSchema,
+  companySkillProjectScanPrunedSchema,
   companySkillProjectScanResultSchema,
   companySkillCreateSchema,
   companySkillFileDetailSchema,
diff --git a/server/src/__tests__/company-skills-prune.test.ts b/server/src/__tests__/company-skills-prune.test.ts
index a75ab072..3ccc8612 100644
--- a/server/src/__tests__/company-skills-prune.test.ts
+++ b/server/src/__tests__/company-skills-prune.test.ts
@@ -282,4 +282,46 @@ describeEmbeddedPostgres("scanProjectWorkspaces prune path", () => {
       ]),
     );
   });
+
+  it("reports pruned skills without deleting when dryRun is true", async () => {
+    stubGitHubSource(["keep-skill"]);
+
+    const { companySkillService } = await import("../services/company-skills.js");
+    const svc = companySkillService(db);
+    const result = await svc.scanProjectWorkspaces(companyId, { dryRun: true });
+
+    // The result should flag dryRun and list what would be pruned
+    expect(result.dryRun).toBe(true);
+    expect(result.pruned).toEqual(
+      expect.arrayContaining([
+        expect.objectContaining({
+          slug: "prune-skill",
+          affectedAgents: expect.arrayContaining(["Builder"]),
+        }),
+      ]),
+    );
+
+    // No warnings emitted (nothing was actually deleted)
+    const pruneWarnings = result.warnings.filter((w) => w.includes("prune-skill"));
+    expect(pruneWarnings).toHaveLength(0);
+
+    // Both skills should still exist in the database
+    const remaining = await db
+      .select()
+      .from(companySkills)
+      .where(eq(companySkills.companyId, companyId));
+    const remainingSlugs = remaining.map((r) => r.slug);
+    expect(remainingSlugs).toContain("keep-skill");
+    expect(remainingSlugs).toContain("prune-skill");
+
+    // Agent config should be unchanged
+    const [agentRow] = await db
+      .select()
+      .from(agents)
+      .where(eq(agents.id, agentId));
+    const config = agentRow!.adapterConfig as Record<string, unknown>;
+    const syncConfig = config.paperclipSkillSync as Record<string, unknown>;
+    const desiredSkills = syncConfig.desiredSkills as string[];
+    expect(desiredSkills).toContain("test-org/test-skills/prune-skill");
+  });
 });
diff --git a/server/src/__tests__/company-skills-routes.test.ts b/server/src/__tests__/company-skills-routes.test.ts
index 32656226..a7a8766e 100644
--- a/server/src/__tests__/company-skills-routes.test.ts
+++ b/server/src/__tests__/company-skills-routes.test.ts
@@ -78,7 +78,9 @@ describe("company skill mutation permissions", () => {
       updated: [],
       skipped: [],
       conflicts: [],
+      pruned: [],
       warnings: [],
+      dryRun: false,
     });
     mockLogActivity.mockResolvedValue(undefined);
     mockAccessService.canUser.mockResolvedValue(true);
@@ -293,9 +295,13 @@ describe("company skill mutation permissions", () => {
       updated: [],
       skipped: [],
       conflicts: [],
+      pruned: [
+        { skillId: "skill-1", slug: "ghost-skill", key: "vercel-labs/agent-browser/ghost-skill", sourceLocator: "https://github.com/vercel-labs/agent-browser", affectedAgents: ["Builder"] },
+      ],
       warnings: [
         'Skill "ghost-skill" was removed from https://github.com/vercel-labs/agent-browser and detached from Builder.',
       ],
+      dryRun: false,
     });
 
     const res = await request(await createApp({
diff --git a/server/src/services/company-skills.ts b/server/src/services/company-skills.ts
index d1fea3d9..adeb537a 100644
--- a/server/src/services/company-skills.ts
+++ b/server/src/services/company-skills.ts
@@ -17,6 +17,7 @@ import type {
   CompanySkillImportResult,
   CompanySkillListItem,
   CompanySkillProjectScanConflict,
+  CompanySkillProjectScanPruned,
   CompanySkillProjectScanRequest,
   CompanySkillProjectScanResult,
   CompanySkillProjectScanSkipped,
@@ -1860,8 +1861,10 @@ export function companySkillService(db: Db) {
       ? await projects.listByIds(companyId, input.projectIds)
       : await projects.list(companyId);
     const workspaceFilter = new Set(input.workspaceIds ?? []);
+    const dryRun = input.dryRun === true;
     const skipped: CompanySkillProjectScanSkipped[] = [];
     const conflicts: CompanySkillProjectScanConflict[] = [];
+    const pruned: CompanySkillProjectScanPruned[] = [];
     const warnings: string[] = [];
     const imported: CompanySkill[] = [];
     const updated: CompanySkill[] = [];
@@ -2043,6 +2046,18 @@ export function companySkillService(db: Db) {
         for (const skill of skillsAtSource) {
           if (currentSlugs.has(skill.slug)) continue;
           const usedByAgents = await usage(companyId, skill.key);
+          const affectedAgentNames = usedByAgents.map((a) => a.name);
+
+          pruned.push({
+            skillId: skill.id,
+            slug: skill.slug,
+            key: skill.key,
+            sourceLocator: skill.sourceLocator,
+            affectedAgents: affectedAgentNames,
+          });
+
+          if (dryRun) continue;
+
           if (usedByAgents.length > 0) {
             // Detach the skill from all agents that have it, then delete
             for (const agent of usedByAgents) {
@@ -2059,7 +2074,7 @@ export function companySkillService(db: Db) {
               }
             }
             warnings.push(
-              `Skill "${skill.slug}" was removed from ${sourceLocator} and detached from ${usedByAgents.map((a) => a.name).join(", ")}.`,
+              `Skill "${skill.slug}" was removed from ${sourceLocator} and detached from ${affectedAgentNames.join(", ")}.`,
             );
           } else {
             warnings.push(
@@ -2082,7 +2097,9 @@ export function companySkillService(db: Db) {
       updated,
       skipped,
       conflicts,
+      pruned,
       warnings,
+      dryRun,
     };
   }