fix(skills): prevent PAT pollution of bundled skills and orphan secrets on delete

Five connected gaps in the original PAT feature, all in company-skills.ts:

1. upsertImportedSkills only protected bundled rows from overwrite when the
   incoming source claimed to be paperclipai/paperclip. A SKILL.md from any
   other org/repo whose key resolves to paperclipai/paperclip/<slug> would
   hijack the bundled row and gain a sourceAuthSecretId. Broadened: any
   non-bundled incoming is rejected when existing is paperclip_bundled.

2. The metadata-build block preserved sourceAuthSecretId from existing
   indiscriminately, so any pollution of a bundled row was kept across every
   ensureBundledSkills re-upsert. Skip preservation when existing is bundled.

3. importFromSource's auth-token loop wrote sourceAuthSecretId for every
   imported skill including any bundled ones that snuck through. Defense in
   depth: skip skills with sourceKind === "paperclip_bundled".

4. updateSkillAuth had no guard, so the PATCH /skills/:id/auth route could
   attach a PAT to a bundled skill via direct API call. Reject explicitly.

5. deleteSkill removed the secret without checking whether any sibling skill
   still referenced it via metadata.sourceAuthSecretId. Re-imports preserve
   that reference, so two skills could share a secret and deleting one would
   orphan the other's reference. Now skip the remove if another skill in the
   same company still references the secret.

packages/shared/src/index.ts

@@ -812,6 +812,7 @@ export {
   companySkillDetailSchema,
   companySkillUpdateStatusSchema,
   companySkillImportSchema,
+  companySkillUpdateAuthSchema,
   companySkillProjectScanRequestSchema,
   companySkillProjectScanSkippedSchema,
   companySkillProjectScanConflictSchema,

packages/shared/src/validators/company-skill.ts

@@ -68,6 +68,11 @@ export const companySkillUpdateStatusSchema = z.object({
 
 export const companySkillImportSchema = z.object({
   source: z.string().min(1),
+  authToken: z.string().min(1).optional(),
+});
+
+export const companySkillUpdateAuthSchema = z.object({
+  authToken: z.string().min(1).nullable(),
 });
 
 export const companySkillProjectScanRequestSchema = z.object({
@@ -135,3 +140,4 @@ export type CompanySkillImport = z.infer<typeof companySkillImportSchema>;
 export type CompanySkillProjectScan = z.infer<typeof companySkillProjectScanRequestSchema>;
 export type CompanySkillCreate = z.infer<typeof companySkillCreateSchema>;
 export type CompanySkillFileUpdate = z.infer<typeof companySkillFileUpdateSchema>;
+export type CompanySkillUpdateAuth = z.infer<typeof companySkillUpdateAuthSchema>;

packages/shared/src/validators/index.ts

@@ -63,6 +63,7 @@ export {
   companySkillDetailSchema,
   companySkillUpdateStatusSchema,
   companySkillImportSchema,
+  companySkillUpdateAuthSchema,
   companySkillProjectScanRequestSchema,
   companySkillProjectScanSkippedSchema,
   companySkillProjectScanConflictSchema,
@@ -74,6 +75,7 @@ export {
   type CompanySkillProjectScan,
   type CompanySkillCreate,
   type CompanySkillFileUpdate,
+  type CompanySkillUpdateAuth,
 } from "./company-skill.js";
 export {
   agentSkillStateSchema,

server/src/__tests__/company-skills-routes.test.ts

@@ -14,6 +14,8 @@ const mockAccessService = vi.hoisted(() => ({
 const mockCompanySkillService = vi.hoisted(() => ({
   importFromSource: vi.fn(),
   deleteSkill: vi.fn(),
+  updateSkillAuth: vi.fn(),
+  scanProjectWorkspaces: vi.fn(),
 }));
 
 const mockLogActivity = vi.hoisted(() => vi.fn());
@@ -97,6 +99,15 @@ describe("company skill mutation permissions", () => {
       slug: "find-skills",
       name: "Find Skills",
     });
+    mockCompanySkillService.scanProjectWorkspaces.mockResolvedValue({
+      scannedProjects: 1,
+      scannedWorkspaces: 2,
+      discovered: [],
+      imported: [],
+      updated: [],
+      conflicts: [],
+      warnings: [],
+    });
     mockLogActivity.mockResolvedValue(undefined);
     mockAccessService.canUser.mockResolvedValue(true);
     mockAccessService.hasPermission.mockResolvedValue(false);
@@ -294,9 +305,120 @@ describe("company skill mutation permissions", () => {
     expect(mockCompanySkillService.importFromSource).toHaveBeenCalledWith(
       "company-1",
       "https://github.com/vercel-labs/agent-browser",
+      undefined,
     );
   });
 
+  it("passes a PAT through skill import requests", async () => {
+    const res = await request(await createApp({
+      type: "board",
+      userId: "local-board",
+      companyIds: ["company-1"],
+      source: "local_implicit",
+      isInstanceAdmin: false,
+    }))
+      .post("/api/companies/company-1/skills/import")
+      .send({
+        source: "https://github.com/vercel-labs/agent-browser",
+        authToken: "ghp_private_token",
+      });
+
+    expect(res.status, JSON.stringify(res.body)).toBe(201);
+    expect(mockCompanySkillService.importFromSource).toHaveBeenCalledWith(
+      "company-1",
+      "https://github.com/vercel-labs/agent-browser",
+      "ghp_private_token",
+    );
+  });
+
+  it("updates a skill auth token", async () => {
+    mockCompanySkillService.updateSkillAuth.mockResolvedValue({
+      id: "skill-1",
+      slug: "find-skills",
+    });
+
+    const res = await request(await createApp({
+      type: "board",
+      userId: "local-board",
+      companyIds: ["company-1"],
+      source: "local_implicit",
+      isInstanceAdmin: false,
+    }))
+      .patch("/api/companies/company-1/skills/skill-1/auth")
+      .send({ authToken: "ghp_private_token" });
+
+    expect(res.status, JSON.stringify(res.body)).toBe(200);
+    expect(mockCompanySkillService.updateSkillAuth).toHaveBeenCalledWith(
+      "company-1",
+      "skill-1",
+      "ghp_private_token",
+    );
+    expect(mockLogActivity).toHaveBeenCalledWith(
+      expect.anything(),
+      expect.objectContaining({
+        companyId: "company-1",
+        action: "company.skill_auth_updated",
+        entityType: "company_skill",
+        entityId: "skill-1",
+        details: { slug: "find-skills" },
+      }),
+    );
+  });
+
+  it("clears a skill auth token", async () => {
+    mockCompanySkillService.updateSkillAuth.mockResolvedValue({
+      id: "skill-1",
+      slug: "find-skills",
+    });
+
+    const res = await request(await createApp({
+      type: "board",
+      userId: "local-board",
+      companyIds: ["company-1"],
+      source: "local_implicit",
+      isInstanceAdmin: false,
+    }))
+      .patch("/api/companies/company-1/skills/skill-1/auth")
+      .send({ authToken: null });
+
+    expect(res.status, JSON.stringify(res.body)).toBe(200);
+    expect(mockCompanySkillService.updateSkillAuth).toHaveBeenCalledWith(
+      "company-1",
+      "skill-1",
+      null,
+    );
+    expect(mockLogActivity).toHaveBeenCalledWith(
+      expect.anything(),
+      expect.objectContaining({
+        companyId: "company-1",
+        action: "company.skill_auth_removed",
+        entityType: "company_skill",
+        entityId: "skill-1",
+        details: { slug: "find-skills" },
+      }),
+    );
+  });
+
+  it("allows agents with canCreateAgents to scan project workspaces", async () => {
+    mockAgentService.getById.mockResolvedValue({
+      id: "agent-1",
+      companyId: "company-1",
+      permissions: { canCreateAgents: true },
+    });
+
+    const res = await request(await createApp({
+      type: "agent",
+      agentId: "agent-1",
+      companyId: "company-1",
+      runId: "run-1",
+    }))
+      .post("/api/companies/company-1/skills/scan-projects")
+      .send({});
+
+    expect(res.status, JSON.stringify(res.body)).toBe(200);
+    expect(mockCompanySkillService.scanProjectWorkspaces).toHaveBeenCalledWith("company-1", {});
+  });
+
   it("returns a blocking error when attempting to delete a skill still used by agents", async () => {
     const { unprocessable } = await import("../errors.js");
     mockCompanySkillService.deleteSkill.mockImplementationOnce(async () => {

server/src/routes/company-skills.ts

@@ -4,6 +4,7 @@ import {
   companySkillCreateSchema,
   companySkillFileUpdateSchema,
   companySkillImportSchema,
+  companySkillUpdateAuthSchema,
   companySkillProjectScanRequestSchema,
 } from "@paperclipai/shared";
 import { trackSkillImported } from "@paperclipai/shared/telemetry";
@@ -194,7 +195,8 @@ export function companySkillRoutes(db: Db) {
       const companyId = req.params.companyId as string;
       await assertCanMutateCompanySkills(req, companyId);
       const source = String(req.body.source ?? "");
-      const result = await svc.importFromSource(companyId, source);
+      const authToken = typeof req.body.authToken === "string" ? req.body.authToken.trim() : undefined;
+      const result = await svc.importFromSource(companyId, source, authToken || undefined);
 
       const actor = getActorInfo(req);
       await logActivity(db, {
@@ -318,5 +320,38 @@ export function companySkillRoutes(db: Db) {
     res.json(result);
   });
 
+  router.patch(
+    "/companies/:companyId/skills/:skillId/auth",
+    validate(companySkillUpdateAuthSchema),
+    async (req, res) => {
+      const companyId = req.params.companyId as string;
+      const skillId = req.params.skillId as string;
+      await assertCanMutateCompanySkills(req, companyId);
+      const authToken = req.body.authToken as string | null;
+      const result = await svc.updateSkillAuth(companyId, skillId, authToken);
+      if (!result) {
+        res.status(404).json({ error: "Skill not found" });
+        return;
+      }
+
+      const actor = getActorInfo(req);
+      await logActivity(db, {
+        companyId,
+        actorType: actor.actorType,
+        actorId: actor.actorId,
+        agentId: actor.agentId,
+        runId: actor.runId,
+        action: authToken ? "company.skill_auth_updated" : "company.skill_auth_removed",
+        entityType: "company_skill",
+        entityId: result.id,
+        details: {
+          slug: result.slug,
+        },
+      });
+
+      res.json(result);
+    },
+  );
+
   return router;
 }

server/src/services/company-skills.ts

@@ -2,7 +2,7 @@ import { createHash } from "node:crypto";
 import { promises as fs } from "node:fs";
 import path from "node:path";
 import { fileURLToPath } from "node:url";
-import { and, asc, eq } from "drizzle-orm";
+import { and, asc, eq, sql } from "drizzle-orm";
 import type { Db } from "@paperclipai/db";
 import { companies, companySkills } from "@paperclipai/db";
 import { readPaperclipSkillSyncPreference } from "@paperclipai/adapter-utils/server-utils";
@@ -32,6 +32,7 @@ import { notFound, unprocessable } from "../errors.js";
 import { ghFetch, gitHubApiBase, resolveRawGitHubUrl } from "./github-fetch.js";
 import { agentService } from "./agents.js";
 import { projectService } from "./projects.js";
+import { secretService } from "./secrets.js";
 
 type CompanySkillRow = typeof companySkills.$inferSelect;
 type CompanySkillListDbRow = Pick<
@@ -540,20 +541,20 @@ function parseFrontmatterMarkdown(raw: string): { frontmatter: Record<string, un
   };
 }
 
-async function fetchText(url: string) {
-  const response = await ghFetch(url);
+async function fetchText(url: string, authToken?: string) {
+  const response = await ghFetch(url, undefined, authToken);
   if (!response.ok) {
     throw unprocessable(`Failed to fetch ${url}: ${response.status}`);
   }
   return response.text();
 }
 
-async function fetchJson<T>(url: string): Promise<T> {
+async function fetchJson<T>(url: string, authToken?: string): Promise<T> {
   const response = await ghFetch(url, {
     headers: {
       accept: "application/vnd.github+json",
     },
-  });
+  }, authToken);
   if (!response.ok) {
     throw unprocessable(`Failed to fetch ${url}: ${response.status}`);
   }
@@ -561,16 +562,18 @@ async function fetchJson<T>(url: string): Promise<T> {
 }
 
 
-async function resolveGitHubDefaultBranch(owner: string, repo: string, apiBase: string) {
+async function resolveGitHubDefaultBranch(owner: string, repo: string, apiBase: string, authToken?: string) {
   const response = await fetchJson<{ default_branch?: string }>(
     `${apiBase}/repos/${owner}/${repo}`,
+    authToken,
   );
   return asString(response.default_branch) ?? "main";
 }
 
-async function resolveGitHubCommitSha(owner: string, repo: string, ref: string, apiBase: string) {
+async function resolveGitHubCommitSha(owner: string, repo: string, ref: string, apiBase: string, authToken?: string) {
   const response = await fetchJson<{ sha?: string }>(
     `${apiBase}/repos/${owner}/${repo}/commits/${encodeURIComponent(ref)}`,
+    authToken,
   );
   const sha = asString(response.sha);
   if (!sha) {
@@ -607,7 +610,7 @@ function parseGitHubSourceUrl(rawUrl: string) {
   return { hostname: url.hostname, owner, repo, ref, basePath, filePath, explicitRef };
 }
 
-async function resolveGitHubPinnedRef(parsed: ReturnType<typeof parseGitHubSourceUrl>) {
+async function resolveGitHubPinnedRef(parsed: ReturnType<typeof parseGitHubSourceUrl>, authToken?: string) {
   const apiBase = gitHubApiBase(parsed.hostname);
   if (/^[0-9a-f]{40}$/i.test(parsed.ref.trim())) {
     return {
@@ -618,8 +621,8 @@ async function resolveGitHubPinnedRef(parsed: ReturnType<typeof parseGitHubSourc
 
   const trackingRef = parsed.explicitRef
     ? parsed.ref
-    : await resolveGitHubDefaultBranch(parsed.owner, parsed.repo, apiBase);
-  const pinnedRef = await resolveGitHubCommitSha(parsed.owner, parsed.repo, trackingRef, apiBase);
+    : await resolveGitHubDefaultBranch(parsed.owner, parsed.repo, apiBase, authToken);
+  const pinnedRef = await resolveGitHubCommitSha(parsed.owner, parsed.repo, trackingRef, apiBase, authToken);
   return { pinnedRef, trackingRef };
 }
 
@@ -1050,6 +1053,7 @@ async function readUrlSkillImports(
   companyId: string,
   sourceUrl: string,
   requestedSkillSlug: string | null = null,
+  authToken?: string,
 ): Promise<{ skills: ImportedSkill[]; warnings: string[] }> {
   const url = sourceUrl.trim();
   const warnings: string[] = [];
@@ -1064,10 +1068,11 @@ async function readUrlSkillImports(
   if (looksLikeRepoUrl) {
     const parsed = parseGitHubSourceUrl(url);
     const apiBase = gitHubApiBase(parsed.hostname);
-    const { pinnedRef, trackingRef } = await resolveGitHubPinnedRef(parsed);
+    const { pinnedRef, trackingRef } = await resolveGitHubPinnedRef(parsed, authToken);
     let ref = pinnedRef;
     const tree = await fetchJson<{ tree?: Array<{ path: string; type: string }> }>(
       `${apiBase}/repos/${parsed.owner}/${parsed.repo}/git/trees/${ref}?recursive=1`,
+      authToken,
     ).catch(() => {
       throw unprocessable(`Failed to read GitHub tree for ${url}`);
     });
@@ -1094,7 +1099,7 @@ async function readUrlSkillImports(
     const skills: ImportedSkill[] = [];
     for (const relativeSkillPath of skillPaths) {
       const repoSkillPath = basePrefix ? `${basePrefix}${relativeSkillPath}` : relativeSkillPath;
-      const markdown = await fetchText(resolveRawGitHubUrl(parsed.hostname, parsed.owner, parsed.repo, ref, repoSkillPath));
+      const markdown = await fetchText(resolveRawGitHubUrl(parsed.hostname, parsed.owner, parsed.repo, ref, repoSkillPath), authToken);
       const parsedMarkdown = parseFrontmatterMarkdown(markdown);
       const skillDir = path.posix.dirname(relativeSkillPath);
       const slug = deriveImportedSkillSlug(parsedMarkdown.frontmatter, path.posix.basename(skillDir));
@@ -1156,7 +1161,7 @@ async function readUrlSkillImports(
   }
 
   if (url.startsWith("http://") || url.startsWith("https://")) {
-    const markdown = await fetchText(url);
+    const markdown = await fetchText(url, authToken);
     const parsedMarkdown = parseFrontmatterMarkdown(markdown);
     const urlObj = new URL(url);
     const fileName = path.posix.basename(urlObj.pathname);
@@ -1548,6 +1553,22 @@ function toCompanySkillListItem(skill: CompanySkillListRow, attachedAgentCount:
 export function companySkillService(db: Db) {
   const agents = agentService(db);
   const projects = projectService(db);
+  const secretsSvc = secretService(db);
+
+  async function resolveSkillAuthToken(
+    companyId: string,
+    skill: { metadata: Record<string, unknown> | null },
+  ): Promise<string | undefined> {
+    const meta = skill.metadata;
+    if (!meta) return undefined;
+    const secretId = typeof meta.sourceAuthSecretId === "string" ? meta.sourceAuthSecretId.trim() : "";
+    if (!secretId) return undefined;
+    try {
+      return await secretsSvc.resolveSecretValue(companyId, secretId, "latest");
+    } catch {
+      return undefined;
+    }
+  }
 
   async function ensureBundledSkills(companyId: string) {
     for (const skillsRoot of resolveBundledSkillsRoot()) {
@@ -1766,7 +1787,8 @@ export function companySkillService(db: Db) {
 
     const hostname = asString(metadata.hostname) || "github.com";
     const apiBase = gitHubApiBase(hostname);
-    const latestRef = await resolveGitHubCommitSha(owner, repo, trackingRef, apiBase);
+    const authToken = await resolveSkillAuthToken(companyId, skill);
+    const latestRef = await resolveGitHubCommitSha(owner, repo, trackingRef, apiBase, authToken);
     return {
       supported: true,
       reason: null,
@@ -1810,8 +1832,9 @@ export function companySkillService(db: Db) {
       if (!owner || !repo) {
         throw unprocessable("Skill source metadata is incomplete.");
       }
+      const authToken = await resolveSkillAuthToken(companyId, skill);
       const repoPath = normalizePortablePath(path.posix.join(repoSkillDir, normalizedPath));
-      content = await fetchText(resolveRawGitHubUrl(hostname, owner, repo, ref, repoPath));
+      content = await fetchText(resolveRawGitHubUrl(hostname, owner, repo, ref, repoPath), authToken);
     } else if (skill.sourceType === "url") {
       if (normalizedPath !== "SKILL.md") {
         throw notFound("This skill source only exposes SKILL.md");
@@ -1928,7 +1951,8 @@ export function companySkillService(db: Db) {
       throw unprocessable("Skill source locator is missing.");
     }
 
-    const result = await readUrlSkillImports(companyId, skill.sourceLocator, skill.slug);
+    const authToken = await resolveSkillAuthToken(companyId, skill);
+    const result = await readUrlSkillImports(companyId, skill.sourceLocator, skill.slug, authToken);
     const matching = result.skills.find((entry) => entry.key === skill.key) ?? result.skills[0] ?? null;
     if (!matching) {
       throw unprocessable(`Skill ${skill.key} could not be re-imported from its source.`);
@@ -2103,6 +2127,28 @@ export function companySkillService(db: Db) {
       }
     }
 
+    const sourceLocators = new Set<string>();
+    for (const skill of acceptedSkills) {
+      if (skill.sourceType !== "github" && skill.sourceType !== "skills_sh") continue;
+      const locator = skill.sourceLocator ?? "";
+      if (locator) sourceLocators.add(locator);
+    }
+    for (const sourceLocator of sourceLocators) {
+      try {
+        const result = await readUrlSkillImports(companyId, sourceLocator, null);
+        for (const nextSkill of result.skills) {
+          if (acceptedSkills.some((s) => s.slug === nextSkill.slug)) continue;
+          const persisted = (await upsertImportedSkills(companyId, [nextSkill]))[0];
+          if (persisted) {
+            imported.push(persisted);
+            upsertAcceptedSkill(persisted);
+          }
+        }
+      } catch {
+        warnings.push(`Could not re-scan source ${sourceLocator} — skipping.`);
+      }
+    }
+
     return {
       scannedProjects: scannedProjectIds.size,
       scannedWorkspaces: scanTargets.length,
@@ -2326,20 +2372,29 @@ export function companySkillService(db: Db) {
       const incomingOwner = asString(incomingMeta.owner);
       const incomingRepo = asString(incomingMeta.repo);
       const incomingKind = asString(incomingMeta.sourceKind);
+      // Bundled skills are sourced from the server image and re-upserted by
+      // ensureBundledSkills only. Never let a non-bundled import overwrite a
+      // bundled row, regardless of which org/repo it claims to be from.
       if (
         existing
         && existingMeta.sourceKind === "paperclip_bundled"
-        && incomingKind === "github"
-        && incomingOwner === "paperclipai"
-        && incomingRepo === "paperclip"
+        && incomingKind !== "paperclip_bundled"
       ) {
         out.push(existing);
         continue;
       }
 
+      // Preserve sourceAuthSecretId across re-imports of the same skill. Skip
+      // bundled rows: they should never carry a PAT reference, and preserving
+      // one across a bundled re-upsert would re-attach stale data.
       const metadata = {
         ...(skill.metadata ?? {}),
         skillKey: skill.key,
+        ...(existing?.metadata
+          && existingMeta.sourceKind !== "paperclip_bundled"
+          && typeof (existing.metadata as Record<string, unknown>).sourceAuthSecretId === "string"
+          ? { sourceAuthSecretId: (existing.metadata as Record<string, unknown>).sourceAuthSecretId }
+          : {}),
       };
       const values = {
         companyId,
@@ -2375,7 +2430,7 @@ export function companySkillService(db: Db) {
     return out;
   }
 
-  async function importFromSource(companyId: string, source: string): Promise<CompanySkillImportResult> {
+  async function importFromSource(companyId: string, source: string, authToken?: string): Promise<CompanySkillImportResult> {
     await ensureSkillInventoryCurrent(companyId);
     const parsed = parseSkillImportSourceInput(source);
     const local = !/^https?:\/\//i.test(parsed.resolvedSource);
@@ -2385,7 +2440,7 @@ export function companySkillService(db: Db) {
           .filter((skill) => !parsed.requestedSkillSlug || skill.slug === parsed.requestedSkillSlug),
         warnings: parsed.warnings,
       }
-      : await readUrlSkillImports(companyId, parsed.resolvedSource, parsed.requestedSkillSlug)
+      : await readUrlSkillImports(companyId, parsed.resolvedSource, parsed.requestedSkillSlug, authToken)
         .then((result) => ({
           skills: result.skills,
           warnings: [...parsed.warnings, ...result.warnings],
@@ -2412,6 +2467,35 @@ export function companySkillService(db: Db) {
       }
     }
     const imported = await upsertImportedSkills(companyId, filteredSkills);
+
+    if (authToken && imported.length > 0) {
+      for (const skill of imported) {
+        const skillMeta = skill.metadata as Record<string, unknown> | null;
+        if (skillMeta?.sourceKind === "paperclip_bundled") continue;
+        const secretName = `skill-pat:${skill.id}`;
+        let secretId: string;
+        const existing = await secretsSvc.getByName(companyId, secretName);
+        if (existing) {
+          await secretsSvc.rotate(existing.id, { value: authToken });
+          secretId = existing.id;
+        } else {
+          const created = await secretsSvc.create(companyId, {
+            name: secretName,
+            provider: "local_encrypted",
+            value: authToken,
+            description: `GitHub PAT for skill ${skill.slug}`,
+          });
+          secretId = created.id;
+        }
+        const meta = (skill.metadata ?? {}) as Record<string, unknown>;
+        meta.sourceAuthSecretId = secretId;
+        await db
+          .update(companySkills)
+          .set({ metadata: meta, updatedAt: new Date() })
+          .where(and(eq(companySkills.id, skill.id), eq(companySkills.companyId, companyId)));
+      }
+    }
+
     return { imported, warnings };
   }
 
@@ -2451,9 +2535,85 @@ export function companySkillService(db: Db) {
     // Clean up materialized runtime files
     await fs.rm(resolveRuntimeSkillMaterializedPath(companyId, skill), { recursive: true, force: true });
 
+    const meta = skill.metadata as Record<string, unknown> | null;
+    const secretId = typeof meta?.sourceAuthSecretId === "string" ? meta.sourceAuthSecretId : null;
+    if (secretId) {
+      // Skip cleanup if another skill in the same company still references this
+      // secret. The deleted row is already gone from the table, so any result
+      // here is a sibling skill we shouldn't orphan.
+      const otherSkillRefs = await db
+        .select({ id: companySkills.id })
+        .from(companySkills)
+        .where(and(
+          eq(companySkills.companyId, companyId),
+          sql`${companySkills.metadata} ->> 'sourceAuthSecretId' = ${secretId}`,
+        ))
+        .limit(1);
+      if (otherSkillRefs.length === 0) {
+        try {
+          await secretsSvc.remove(secretId);
+        } catch {
+          // Best-effort: don't fail the skill deletion if secret cleanup fails
+          // (typically blocked by an agent env binding still referencing it).
+        }
+      }
+    }
+
     return skill;
   }
 
+  async function updateSkillAuth(
+    companyId: string,
+    skillId: string,
+    authToken: string | null,
+  ): Promise<CompanySkill | null> {
+    const skill = await getById(companyId, skillId);
+    if (!skill) return null;
+
+    const meta = (skill.metadata ?? {}) as Record<string, unknown>;
+    if (meta.sourceKind === "paperclip_bundled") {
+      throw unprocessable("Cannot configure auth for bundled paperclip skills");
+    }
+    const existingSecretId = typeof meta.sourceAuthSecretId === "string" ? meta.sourceAuthSecretId : null;
+
+    if (authToken) {
+      const secretName = `skill-pat:${skill.id}`;
+      let secretId: string;
+      const existingSecret = existingSecretId
+        ? await secretsSvc.getById(existingSecretId)
+        : await secretsSvc.getByName(companyId, secretName);
+      if (existingSecret) {
+        await secretsSvc.rotate(existingSecret.id, { value: authToken });
+        secretId = existingSecret.id;
+      } else {
+        const created = await secretsSvc.create(companyId, {
+          name: secretName,
+          provider: "local_encrypted",
+          value: authToken,
+          description: `GitHub PAT for skill ${skill.slug}`,
+        });
+        secretId = created.id;
+      }
+      meta.sourceAuthSecretId = secretId;
+    } else {
+      if (existingSecretId) {
+        try {
+          await secretsSvc.remove(existingSecretId);
+        } catch {
+          // Best-effort: don't fail the metadata update if secret deletion fails
+        }
+      }
+      delete meta.sourceAuthSecretId;
+    }
+
+    const [updated] = await db
+      .update(companySkills)
+      .set({ metadata: meta, updatedAt: new Date() })
+      .where(and(eq(companySkills.id, skillId), eq(companySkills.companyId, companyId)))
+      .returning();
+    return updated ? toCompanySkill(updated) : null;
+  }
+
   return {
     list,
     listFull,
@@ -2470,6 +2630,7 @@ export function companySkillService(db: Db) {
     createLocalSkill,
     deleteSkill,
     importFromSource,
+    updateSkillAuth,
     scanProjectWorkspaces,
     importPackageFiles,
     installUpdate,

server/src/services/github-fetch.ts

@@ -16,9 +16,13 @@ export function resolveRawGitHubUrl(hostname: string, owner: string, repo: strin
     : `https://${hostname}/raw/${owner}/${repo}/${ref}/${p}`;
 }
 
-export async function ghFetch(url: string, init?: RequestInit): Promise<Response> {
+export async function ghFetch(url: string, init?: RequestInit, authToken?: string): Promise<Response> {
+  const headers = new Headers(init?.headers);
+  if (authToken) {
+    headers.set("Authorization", `Bearer ${authToken}`);
+  }
   try {
-    return await fetch(url, init);
+    return await fetch(url, { ...init, headers, redirect: authToken ? "manual" : "follow" });
   } catch {
     throw unprocessable(`Could not connect to ${new URL(url).hostname} — ensure the URL points to a GitHub or GitHub Enterprise instance`);
   }

ui/src/api/companySkills.ts

@@ -36,10 +36,15 @@ export const companySkillsApi = {
       `/companies/${encodeURIComponent(companyId)}/skills`,
       payload,
     ),
-  importFromSource: (companyId: string, source: string) =>
+  importFromSource: (companyId: string, source: string, authToken?: string) =>
     api.post<CompanySkillImportResult>(
       `/companies/${encodeURIComponent(companyId)}/skills/import`,
-      { source },
+      { source, ...(authToken ? { authToken } : {}) },
+    ),
+  updateAuth: (companyId: string, skillId: string, authToken: string | null) =>
+    api.patch<CompanySkill>(
+      `/companies/${encodeURIComponent(companyId)}/skills/${encodeURIComponent(skillId)}/auth`,
+      { authToken },
     ),
   scanProjects: (companyId: string, payload: CompanySkillProjectScanRequest = {}) =>
     api.post<CompanySkillProjectScanResult>(

ui/src/pages/CompanySkills.tsx

@@ -52,6 +52,7 @@ import {
   RefreshCw,
   Save,
   Search,
+  ShieldCheck,
   Trash2,
 } from "lucide-react";
 
@@ -487,6 +488,103 @@ function SkillList({
   );
 }
 
+function SkillAuthSection({
+  companyId,
+  skillId,
+  hasAuth,
+}: {
+  companyId: string;
+  skillId: string;
+  hasAuth: boolean;
+}) {
+  const queryClient = useQueryClient();
+  const { pushToast } = useToastActions();
+  const [editing, setEditing] = useState(false);
+  const [token, setToken] = useState("");
+
+  const updateAuth = useMutation({
+    mutationFn: (authToken: string | null) =>
+      companySkillsApi.updateAuth(companyId, skillId, authToken),
+    onSuccess: async () => {
+      await queryClient.invalidateQueries({ queryKey: queryKeys.companySkills.detail(companyId, skillId) });
+      setEditing(false);
+      setToken("");
+      pushToast({ tone: "success", title: "Auth updated" });
+    },
+    onError: (error) => {
+      pushToast({
+        tone: "error",
+        title: "Failed to update auth",
+        body: error instanceof Error ? error.message : "Unknown error",
+      });
+    },
+  });
+
+  return (
+    <div className="flex flex-wrap items-center gap-2">
+      <span className="text-[11px] uppercase tracking-[0.18em] text-muted-foreground">Auth</span>
+      {!editing ? (
+        <>
+          {hasAuth ? (
+            <>
+              <Button
+                variant="ghost"
+                size="sm"
+                onClick={() => setEditing(true)}
+              >
+                <ShieldCheck className="mr-1.5 h-3.5 w-3.5" />
+                PAT configured
+              </Button>
+              <button
+                className="inline-flex items-center text-muted-foreground/50 hover:text-destructive transition-colors"
+                onClick={() => updateAuth.mutate(null)}
+                disabled={updateAuth.isPending}
+                title="Remove PAT"
+              >
+                <Trash2 className="h-3.5 w-3.5" />
+              </button>
+            </>
+          ) : (
+            <Button
+              variant="ghost"
+              size="sm"
+              onClick={() => setEditing(true)}
+            >
+              Add PAT
+            </Button>
+          )}
+        </>
+      ) : (
+        <>
+          <input
+            type="password"
+            value={token}
+            onChange={(e) => setToken(e.target.value)}
+            placeholder="GitHub Personal Access Token"
+            className="flex-1 min-w-[200px] rounded-md border border-border px-2 py-1 bg-transparent text-xs outline-none placeholder:text-muted-foreground/50"
+            autoComplete="off"
+            autoFocus
+          />
+          <Button
+            size="sm"
+            onClick={() => updateAuth.mutate(token.trim())}
+            disabled={!token.trim() || updateAuth.isPending}
+          >
+            {updateAuth.isPending ? "Saving..." : "Save"}
+          </Button>
+          <Button
+            variant="ghost"
+            size="sm"
+            onClick={() => { setEditing(false); setToken(""); }}
+          >
+            Cancel
+          </Button>
+        </>
+      )}
+    </div>
+  );
+}
+
 function SkillPane({
   loading,
   detail,
@@ -614,6 +712,13 @@ function SkillPane({
                 )}
               </span>
             </div>
+            {(detail.sourceType === "github" || detail.sourceType === "skills_sh") && (
+              <SkillAuthSection
+                companyId={detail.companyId}
+                skillId={detail.id}
+                hasAuth={Boolean((detail.metadata as Record<string, unknown> | null)?.sourceAuthSecretId)}
+              />
+            )}
             {detail.sourceType === "github" && (
               <div className="flex flex-wrap items-center gap-2">
                 <span className="text-[11px] uppercase tracking-[0.18em] text-muted-foreground">Pin</span>
@@ -762,6 +867,7 @@ export function CompanySkills() {
   const { pushToast } = useToastActions();
   const [skillFilter, setSkillFilter] = useState("");
   const [source, setSource] = useState("");
+  const [importAuthToken, setImportAuthToken] = useState("");
   const [createOpen, setCreateOpen] = useState(false);
   const [emptySourceHelpOpen, setEmptySourceHelpOpen] = useState(false);
   const [expandedSkillId, setExpandedSkillId] = useState<string | null>(null);
@@ -887,7 +993,8 @@ export function CompanySkills() {
   }
 
   const importSkill = useMutation({
-    mutationFn: (importSource: string) => companySkillsApi.importFromSource(selectedCompanyId!, importSource),
+    mutationFn: ({ importSource, authToken }: { importSource: string; authToken?: string }) =>
+      companySkillsApi.importFromSource(selectedCompanyId!, importSource, authToken),
     onSuccess: async (result) => {
       await queryClient.invalidateQueries({ queryKey: queryKeys.companySkills.list(selectedCompanyId!) });
       if (result.imported[0]) navigate(skillRoute(result.imported[0].id));
@@ -900,6 +1007,7 @@ export function CompanySkills() {
         pushToast({ tone: "warn", title: "Import warnings", body: result.warnings[0] });
       }
       setSource("");
+      setImportAuthToken("");
     },
     onError: (error) => {
       pushToast({
@@ -1073,7 +1181,8 @@ export function CompanySkills() {
       setEmptySourceHelpOpen(true);
       return;
     }
-    importSkill.mutate(trimmedSource);
+    const token = importAuthToken.trim() || undefined;
+    importSkill.mutate({ importSource: trimmedSource, authToken: token });
   }
 
   return (
@@ -1220,6 +1329,18 @@ export function CompanySkills() {
                 {importSkill.isPending ? <RefreshCw className="h-4 w-4 animate-spin" /> : "Add"}
               </Button>
             </div>
+            {source.trim().length > 0 && /github\.com|^[a-zA-Z0-9_-]+\/[a-zA-Z0-9_.-]+/.test(source.trim()) && (
+              <div className="mt-1 flex items-center gap-2 border-b border-border pb-2">
+                <input
+                  type="password"
+                  value={importAuthToken}
+                  onChange={(event) => setImportAuthToken(event.target.value)}
+                  placeholder="GitHub PAT (optional, for private repos)"
+                  className="w-full bg-transparent text-sm outline-none placeholder:text-muted-foreground"
+                  autoComplete="off"
+                />
+              </div>
+            )}
             {scanStatusMessage && (
               <p className="mt-3 text-xs text-muted-foreground">
                 {scanStatusMessage}