diff --git a/api/app/clients/tools/util/handleTools.js b/api/app/clients/tools/util/handleTools.js
index b988d03500..89a79f3cbd 100644
--- a/api/app/clients/tools/util/handleTools.js
+++ b/api/app/clients/tools/util/handleTools.js
@@ -6,6 +6,7 @@ const {
   createSafeUser,
   mcpToolPattern,
   loadWebSearchAuth,
+  getCodeApiAuthHeaders,
   buildImageToolContext,
   buildWebSearchContext,
   buildWebSearchDynamicContext,
@@ -282,7 +283,11 @@ const loadTools = async ({
         if (files?.length) {
           primedCodeFiles = files;
         }
-        return createCodeExecutionTool({ user_id: user, files });
+        return createCodeExecutionTool({
+          user_id: user,
+          files,
+          authHeaders: () => getCodeApiAuthHeaders(options.req),
+        });
       };
       continue;
     } else if (tool === Tools.file_search) {
diff --git a/api/package.json b/api/package.json
index 3c864d1e20..6cbca655b9 100644
--- a/api/package.json
+++ b/api/package.json
@@ -45,7 +45,7 @@
     "@azure/storage-blob": "^12.30.0",
     "@google/genai": "^1.19.0",
     "@keyv/redis": "^4.3.3",
-    "@librechat/agents": "^3.1.83",
+    "@librechat/agents": "^3.1.84",
     "@librechat/api": "*",
     "@librechat/data-schemas": "*",
     "@microsoft/microsoft-graph-client": "^3.0.7",
diff --git a/api/server/middleware/__tests__/requireJwtAuth.spec.js b/api/server/middleware/__tests__/requireJwtAuth.spec.js
index bc288e5dab..a884cb5b3f 100644
--- a/api/server/middleware/__tests__/requireJwtAuth.spec.js
+++ b/api/server/middleware/__tests__/requireJwtAuth.spec.js
@@ -13,17 +13,25 @@ const { getTenantId } = require('@librechat/data-schemas');
 // ── Mocks ──────────────────────────────────────────────────────────────
 
 let mockPassportError = null;
+let mockRegisteredStrategies = new Set(['jwt']);
 
 jest.mock('passport', () => ({
-  authenticate: jest.fn(() => {
-    return (req, _res, done) => {
+  _strategy: jest.fn((strategy) => (mockRegisteredStrategies.has(strategy) ? {} : undefined)),
+  authenticate: jest.fn((strategy, _options, callback) => {
+    return (req, _res, _done) => {
       if (mockPassportError) {
-        return done(mockPassportError);
+        return callback(mockPassportError);
       }
-      if (req._mockUser) {
-        req.user = req._mockUser;
+      const strategyResult = req._mockStrategies?.[strategy];
+      if (strategyResult) {
+        return callback(
+          strategyResult.err ?? null,
+          strategyResult.user ?? false,
+          strategyResult.info,
+          strategyResult.status,
+        );
       }
-      done();
+      return callback(null, req._mockUser ?? false, { message: 'Unauthorized' }, 401);
     };
   }),
 }));
@@ -49,9 +57,11 @@ jest.mock('@librechat/api', () => {
 // ── Helpers ─────────────────────────────────────────────────────────────
 
 const requireJwtAuth = require('../requireJwtAuth');
+const { isEnabled } = require('@librechat/api');
+const passport = require('passport');
 
-function mockReq(user) {
-  return { headers: {}, _mockUser: user };
+function mockReq(user, extra = {}) {
+  return { headers: {}, _mockUser: user, ...extra };
 }
 
 function mockRes() {
@@ -74,6 +84,10 @@ function runAuth(user) {
 describe('requireJwtAuth tenant context chaining', () => {
   afterEach(() => {
     mockPassportError = null;
+    mockRegisteredStrategies = new Set(['jwt']);
+    isEnabled.mockReturnValue(false);
+    passport.authenticate.mockClear();
+    passport._strategy.mockClear();
   });
 
   it('forwards passport errors to next() without entering tenant middleware', async () => {
@@ -98,9 +112,61 @@ describe('requireJwtAuth tenant context chaining', () => {
     expect(tenantId).toBeUndefined();
   });
 
-  it('ALS tenant context is NOT set when user is undefined', async () => {
-    const tenantId = await runAuth(undefined);
-    expect(tenantId).toBeUndefined();
+  it('returns 401 when no strategy authenticates a user', async () => {
+    const req = mockReq(undefined);
+    const res = mockRes();
+    const next = jest.fn();
+
+    requireJwtAuth(req, res, next);
+
+    expect(next).not.toHaveBeenCalled();
+    expect(res.status).toHaveBeenCalledWith(401);
+    expect(getTenantId()).toBeUndefined();
+  });
+
+  it('falls back to OpenID JWT for bearer-only reuse requests', async () => {
+    isEnabled.mockReturnValue(true);
+    mockRegisteredStrategies.add('openidJwt');
+    const req = mockReq(undefined, {
+      _mockStrategies: {
+        jwt: { user: false, info: { message: 'invalid signature' }, status: 401 },
+        openidJwt: { user: { tenantId: 'tenant-openid', role: 'user' } },
+      },
+    });
+    const res = mockRes();
+    const tenantId = await new Promise((resolve) => {
+      requireJwtAuth(req, res, () => {
+        resolve(getTenantId());
+      });
+    });
+
+    expect(tenantId).toBe('tenant-openid');
+    expect(req.authStrategy).toBe('openidJwt');
+    expect(res.status).not.toHaveBeenCalled();
+  });
+
+  it('skips OpenID JWT fallback when the strategy was not registered', async () => {
+    isEnabled.mockReturnValue(true);
+    const req = mockReq(undefined, {
+      _mockStrategies: {
+        jwt: { user: false, info: { message: 'invalid signature' }, status: 401 },
+        openidJwt: { user: { tenantId: 'tenant-openid', role: 'user' } },
+      },
+    });
+    const res = mockRes();
+    const next = jest.fn();
+
+    requireJwtAuth(req, res, next);
+
+    expect(next).not.toHaveBeenCalled();
+    expect(res.status).toHaveBeenCalledWith(401);
+    expect(req.authStrategy).toBeUndefined();
+    expect(passport.authenticate).toHaveBeenCalledTimes(1);
+    expect(passport.authenticate).toHaveBeenCalledWith(
+      'jwt',
+      { session: false },
+      expect.any(Function),
+    );
   });
 
   it('concurrent requests get isolated tenant contexts', async () => {
diff --git a/api/server/middleware/optionalJwtAuth.js b/api/server/middleware/optionalJwtAuth.js
index d46478d36e..853579415e 100644
--- a/api/server/middleware/optionalJwtAuth.js
+++ b/api/server/middleware/optionalJwtAuth.js
@@ -2,23 +2,31 @@ const cookies = require('cookie');
 const passport = require('passport');
 const { isEnabled, tenantContextMiddleware } = require('@librechat/api');
 
+const hasPassportStrategy = (strategy) =>
+  typeof passport._strategy === 'function' && passport._strategy(strategy) != null;
+
 // This middleware does not require authentication,
 // but if the user is authenticated, it will set the user object
 // and establish tenant ALS context.
 const optionalJwtAuth = (req, res, next) => {
   const cookieHeader = req.headers.cookie;
   const tokenProvider = cookieHeader ? cookies.parse(cookieHeader).token_provider : null;
+  const useOpenIdJwt =
+    tokenProvider === 'openid' &&
+    isEnabled(process.env.OPENID_REUSE_TOKENS) &&
+    hasPassportStrategy('openidJwt');
   const callback = (err, user) => {
     if (err) {
       return next(err);
     }
     if (user) {
       req.user = user;
+      req.authStrategy = useOpenIdJwt ? 'openidJwt' : 'jwt';
       return tenantContextMiddleware(req, res, next);
     }
     next();
   };
-  if (tokenProvider === 'openid' && isEnabled(process.env.OPENID_REUSE_TOKENS)) {
+  if (useOpenIdJwt) {
     return passport.authenticate('openidJwt', { session: false }, callback)(req, res, next);
   }
   passport.authenticate('jwt', { session: false }, callback)(req, res, next);
diff --git a/api/server/middleware/requireJwtAuth.js b/api/server/middleware/requireJwtAuth.js
index b13e991b23..5a9e21b6d3 100644
--- a/api/server/middleware/requireJwtAuth.js
+++ b/api/server/middleware/requireJwtAuth.js
@@ -2,6 +2,9 @@ const cookies = require('cookie');
 const passport = require('passport');
 const { isEnabled, tenantContextMiddleware } = require('@librechat/api');
 
+const hasPassportStrategy = (strategy) =>
+  typeof passport._strategy === 'function' && passport._strategy(strategy) != null;
+
 /**
  * Custom Middleware to handle JWT authentication, with support for OpenID token reuse.
  * Switches between JWT and OpenID authentication based on cookies and environment settings.
@@ -13,17 +16,35 @@ const { isEnabled, tenantContextMiddleware } = require('@librechat/api');
 const requireJwtAuth = (req, res, next) => {
   const cookieHeader = req.headers.cookie;
   const tokenProvider = cookieHeader ? cookies.parse(cookieHeader).token_provider : null;
+  const openidReuseEnabled = isEnabled(process.env.OPENID_REUSE_TOKENS);
+  const openidJwtAvailable = openidReuseEnabled && hasPassportStrategy('openidJwt');
+  const strategies =
+    tokenProvider === 'openid' && openidJwtAvailable
+      ? ['openidJwt', 'jwt']
+      : ['jwt', ...(openidJwtAvailable ? ['openidJwt'] : [])];
 
-  const strategy =
-    tokenProvider === 'openid' && isEnabled(process.env.OPENID_REUSE_TOKENS) ? 'openidJwt' : 'jwt';
+  const authenticateWithStrategy = (index) => {
+    const strategy = strategies[index];
+    passport.authenticate(strategy, { session: false }, (err, user, info, status) => {
+      if (err) {
+        return next(err);
+      }
+      if (!user) {
+        if (index + 1 < strategies.length) {
+          return authenticateWithStrategy(index + 1);
+        }
+        return res.status(status || 401).json({
+          message: info?.message || 'Unauthorized',
+        });
+      }
+      req.user = user;
+      req.authStrategy = strategy;
+      // req.user is now populated by passport — set up tenant ALS context
+      tenantContextMiddleware(req, res, next);
+    })(req, res, next);
+  };
 
-  passport.authenticate(strategy, { session: false })(req, res, (err) => {
-    if (err) {
-      return next(err);
-    }
-    // req.user is now populated by passport — set up tenant ALS context
-    tenantContextMiddleware(req, res, next);
-  });
+  authenticateWithStrategy(0);
 };
 
 module.exports = requireJwtAuth;
diff --git a/api/server/routes/files/files.js b/api/server/routes/files/files.js
index a43c184e50..b660154975 100644
--- a/api/server/routes/files/files.js
+++ b/api/server/routes/files/files.js
@@ -318,10 +318,14 @@ router.get('/code/download/:session_id/:fileId', async (req, res) => {
      * sessionKey; without these query params it 400s with
      * "kind must be one of: skill, agent, user". */
     /** @type {AxiosResponse<ReadableStream> | undefined} */
-    const response = await getDownloadStream(`${session_id}/${fileId}`, {
-      kind: 'user',
-      id: req.user.id,
-    });
+    const response = await getDownloadStream(
+      `${session_id}/${fileId}`,
+      {
+        kind: 'user',
+        id: req.user.id,
+      },
+      req,
+    );
     res.set(response.headers);
     response.data.pipe(res);
   } catch (error) {
diff --git a/api/server/services/Files/Code/__tests__/process-traversal.spec.js b/api/server/services/Files/Code/__tests__/process-traversal.spec.js
index 751db31bc2..791d6d258c 100644
--- a/api/server/services/Files/Code/__tests__/process-traversal.spec.js
+++ b/api/server/services/Files/Code/__tests__/process-traversal.spec.js
@@ -25,6 +25,7 @@ jest.mock('@librechat/api', () => {
     sanitizeArtifactPath: mockSanitizeArtifactPath,
     flattenArtifactPath: mockFlattenArtifactPath,
     createAxiosInstance: jest.fn(() => mockAxios),
+    getCodeApiAuthHeaders: jest.fn(async () => ({})),
     classifyCodeArtifact: jest.fn(() => 'other'),
     extractCodeArtifactText: jest.fn(async () => null),
     /* `processCodeOutput` calls this to derive the trust flag persisted
diff --git a/api/server/services/Files/Code/crud.js b/api/server/services/Files/Code/crud.js
index cb25f351ec..eec205bb07 100644
--- a/api/server/services/Files/Code/crud.js
+++ b/api/server/services/Files/Code/crud.js
@@ -9,6 +9,7 @@ const {
   codeServerHttpsAgent,
   appendCodeEnvFileIdentity,
   buildCodeEnvDownloadQuery,
+  getCodeApiAuthHeaders,
 } = require('@librechat/api');
 
 const axios = createAxiosInstance();
@@ -26,10 +27,11 @@ const MAX_FILE_SIZE = 150 * 1024 * 1024;
  * @returns {Promise<AxiosResponse>} A promise that resolves to a readable stream of the file content.
  * @throws {Error} If there's an error during the download process.
  */
-async function getCodeOutputDownloadStream(fileIdentifier, identity) {
+async function getCodeOutputDownloadStream(fileIdentifier, identity, req) {
   try {
     const baseURL = getCodeBaseURL();
     const query = buildCodeEnvDownloadQuery(identity);
+    const authHeaders = await getCodeApiAuthHeaders(req);
     /** @type {import('axios').AxiosRequestConfig} */
     const options = {
       method: 'get',
@@ -37,6 +39,7 @@ async function getCodeOutputDownloadStream(fileIdentifier, identity) {
       responseType: 'stream',
       headers: {
         'User-Agent': 'LibreChat/1.0',
+        ...authHeaders,
       },
       httpAgent: codeServerHttpAgent,
       httpsAgent: codeServerHttpsAgent,
@@ -85,6 +88,7 @@ async function uploadCodeEnvFile({ req, stream, filename, kind, id, version }) {
     appendCodeEnvFile(form, stream, filename);
 
     const baseURL = getCodeBaseURL();
+    const authHeaders = await getCodeApiAuthHeaders(req);
     /** @type {import('axios').AxiosRequestConfig} */
     const options = {
       headers: {
@@ -92,6 +96,7 @@ async function uploadCodeEnvFile({ req, stream, filename, kind, id, version }) {
         'Content-Type': 'multipart/form-data',
         'User-Agent': 'LibreChat/1.0',
         'User-Id': req.user.id,
+        ...authHeaders,
       },
       httpAgent: codeServerHttpAgent,
       httpsAgent: codeServerHttpsAgent,
@@ -156,6 +161,7 @@ async function batchUploadCodeEnvFiles({ req, files, kind, id, version, read_onl
     }
 
     const baseURL = getCodeBaseURL();
+    const authHeaders = await getCodeApiAuthHeaders(req);
     /** @type {import('axios').AxiosRequestConfig} */
     const options = {
       headers: {
@@ -163,6 +169,7 @@ async function batchUploadCodeEnvFiles({ req, files, kind, id, version, read_onl
         'Content-Type': 'multipart/form-data',
         'User-Agent': 'LibreChat/1.0',
         'User-Id': req.user.id,
+        ...authHeaders,
       },
       httpAgent: codeServerHttpAgent,
       httpsAgent: codeServerHttpsAgent,
diff --git a/api/server/services/Files/Code/crud.spec.js b/api/server/services/Files/Code/crud.spec.js
index a84689d8bf..e26eb4dbbb 100644
--- a/api/server/services/Files/Code/crud.spec.js
+++ b/api/server/services/Files/Code/crud.spec.js
@@ -49,18 +49,24 @@ jest.mock('@librechat/api', () => {
       return `?${params.toString()}`;
     }),
     logAxiosError: jest.fn(({ message }) => message),
+    getCodeApiAuthHeaders: jest.fn(async () => ({})),
     createAxiosInstance: jest.fn(() => mockAxios),
     codeServerHttpAgent: new http.Agent({ keepAlive: false }),
     codeServerHttpsAgent: new https.Agent({ keepAlive: false }),
   };
 });
 
-const { codeServerHttpAgent, codeServerHttpsAgent } = require('@librechat/api');
+const {
+  codeServerHttpAgent,
+  codeServerHttpsAgent,
+  getCodeApiAuthHeaders,
+} = require('@librechat/api');
 const { getCodeOutputDownloadStream, uploadCodeEnvFile } = require('./crud');
 
 describe('Code CRUD', () => {
   beforeEach(() => {
     jest.clearAllMocks();
+    getCodeApiAuthHeaders.mockResolvedValue({});
   });
 
   describe('getCodeOutputDownloadStream', () => {
@@ -101,6 +107,18 @@ describe('Code CRUD', () => {
       expect(callConfig.timeout).toBe(15000);
     });
 
+    it('forwards Code API auth headers when a request is provided', async () => {
+      const req = { user: { id: 'user-123' } };
+      getCodeApiAuthHeaders.mockResolvedValue({ Authorization: 'Bearer codeapi-token' });
+      mockAxios.mockResolvedValue({ data: Readable.from(['chunk']) });
+
+      await getCodeOutputDownloadStream('session-1/file-1', userIdentity, req);
+
+      const callConfig = mockAxios.mock.calls[0][0];
+      expect(getCodeApiAuthHeaders).toHaveBeenCalledWith(req);
+      expect(callConfig.headers.Authorization).toBe('Bearer codeapi-token');
+    });
+
     it('forwards skill identity (kind/id/version) when re-downloading a primed skill file', async () => {
       mockAxios.mockResolvedValue({ data: Readable.from(['chunk']) });
 
@@ -194,6 +212,23 @@ describe('Code CRUD', () => {
       expect(result).toEqual({ storage_session_id: 'sess-1', file_id: 'fid-1' });
     });
 
+    it('forwards Code API auth headers on upload requests', async () => {
+      getCodeApiAuthHeaders.mockResolvedValue({ Authorization: 'Bearer codeapi-token' });
+      mockAxios.post.mockResolvedValue({
+        data: {
+          message: 'success',
+          storage_session_id: 'sess-1',
+          files: [{ fileId: 'fid-1', filename: 'data.csv' }],
+        },
+      });
+
+      await uploadCodeEnvFile(baseUploadParams);
+
+      const callConfig = mockAxios.post.mock.calls[0][2];
+      expect(getCodeApiAuthHeaders).toHaveBeenCalledWith(baseUploadParams.req);
+      expect(callConfig.headers.Authorization).toBe('Bearer codeapi-token');
+    });
+
     /* Phase C / option α (codeapi #1455): the upload wire carries the
      * resource identity codeapi uses for sessionKey derivation. Without
      * these on the form, codeapi falls back to user bucketing for every
diff --git a/api/server/services/Files/Code/process.js b/api/server/services/Files/Code/process.js
index 62749818cf..adda87b201 100644
--- a/api/server/services/Files/Code/process.js
+++ b/api/server/services/Files/Code/process.js
@@ -10,6 +10,7 @@ const {
   sanitizeArtifactPath,
   flattenArtifactPath,
   createAxiosInstance,
+  getCodeApiAuthHeaders,
   classifyCodeArtifact,
   codeServerHttpAgent,
   codeServerHttpsAgent,
@@ -335,6 +336,7 @@ const processCodeOutput = async ({
 
   try {
     const formattedDate = currentDate.toISOString();
+    const authHeaders = await getCodeApiAuthHeaders(req);
     /* Code-output files are always user-private — no skill execution
      * produces a skill-scoped output bucket. The download URL must
      * carry `?kind=user&id=<userId>` so codeapi's `sessionAuth`
@@ -347,6 +349,7 @@ const processCodeOutput = async ({
       responseType: 'arraybuffer',
       headers: {
         'User-Agent': 'LibreChat/1.0',
+        ...authHeaders,
       },
       httpAgent: codeServerHttpAgent,
       httpsAgent: codeServerHttpsAgent,
@@ -669,14 +672,16 @@ function checkIfActive(dateString) {
  * @param {import('librechat-data-provider').CodeEnvRef} ref - Typed pointer
  *   into codeapi storage. Carries kind/id/storage_session_id/file_id;
  *   codeapi resolves the sessionKey from the request's auth context.
+ * @param {ServerRequest} [req] - Current authenticated request, used to mint Code API auth.
  *
  * @returns {Promise<string|null>}
  *          A promise that resolves to the `lastModified` time string of the file if successful, or null if there is an
  *          error in initialization or fetching the info.
  */
-async function getSessionInfo(ref) {
+async function getSessionInfo(ref, req) {
   try {
     const baseURL = getCodeBaseURL();
+    const authHeaders = await getCodeApiAuthHeaders(req);
     /* `/sessions/.../objects/...` is gated by codeapi's `sessionAuth`
      * middleware (post-Phase C). The middleware reconstructs the
      * sessionKey from the URL query (`kind`/`id`/`version?`) plus the
@@ -693,6 +698,7 @@ async function getSessionInfo(ref) {
       url: `${baseURL}/sessions/${ref.storage_session_id}/objects/${ref.file_id}${query}`,
       headers: {
         'User-Agent': 'LibreChat/1.0',
+        ...authHeaders,
       },
       httpAgent: codeServerHttpAgent,
       httpsAgent: codeServerHttpsAgent,
@@ -925,7 +931,7 @@ const primeFiles = async (options) => {
         );
       }
     };
-    const uploadTime = await getSessionInfo(ref);
+    const uploadTime = await getSessionInfo(ref, req);
     if (!uploadTime) {
       logger.debug(
         `[primeCodeFiles] file=${file.file_id} path=reupload reason=no-uploadtime ` +
@@ -979,9 +985,10 @@ const primeFiles = async (options) => {
  * @param {string} params.file_path - Absolute path inside the sandbox (e.g. `/mnt/data/foo.txt`).
  * @param {string} [params.session_id] - Sandbox session id from the seeded context.
  * @param {Array<{id: string, name: string, session_id?: string}>} [params.files] - File refs to mount.
+ * @param {ServerRequest} [params.req] - Current authenticated request, used to mint Code API auth.
  * @returns {Promise<{content: string} | null>}
  */
-async function readSandboxFile({ file_path, session_id, files }) {
+async function readSandboxFile({ file_path, session_id, files, req }) {
   const baseURL = getCodeBaseURL();
   if (!baseURL) {
     return null;
@@ -1002,6 +1009,7 @@ async function readSandboxFile({ file_path, session_id, files }) {
   }
 
   try {
+    const authHeaders = await getCodeApiAuthHeaders(req);
     const response = await axios({
       method: 'post',
       url: `${baseURL}/exec`,
@@ -1009,6 +1017,7 @@ async function readSandboxFile({ file_path, session_id, files }) {
       headers: {
         'Content-Type': 'application/json',
         'User-Agent': 'LibreChat/1.0',
+        ...authHeaders,
       },
       httpAgent: codeServerHttpAgent,
       httpsAgent: codeServerHttpsAgent,
diff --git a/api/server/services/Files/Code/process.spec.js b/api/server/services/Files/Code/process.spec.js
index cd2778f80d..6ade00b1f7 100644
--- a/api/server/services/Files/Code/process.spec.js
+++ b/api/server/services/Files/Code/process.spec.js
@@ -62,6 +62,7 @@ jest.mock('@librechat/api', () => {
     sanitizeArtifactPath: jest.fn((name) => name),
     flattenArtifactPath: jest.fn((name) => name.replace(/\//g, '__')),
     createAxiosInstance: jest.fn(() => mockAxios),
+    getCodeApiAuthHeaders: jest.fn(async () => ({})),
     withTimeout: (...args) => passthroughWithTimeout(...args),
     hasOfficeHtmlPath: (...args) => mockHasOfficeHtmlPath(...args),
     /**
@@ -148,7 +149,12 @@ const { getStrategyFunctions } = require('~/server/services/Files/strategies');
 const { convertImage } = require('~/server/services/Files/images/convert');
 const { determineFileType } = require('~/server/utils');
 const { logger } = require('@librechat/data-schemas');
-const { codeServerHttpAgent, codeServerHttpsAgent, getStorageMetadata } = require('@librechat/api');
+const {
+  codeServerHttpAgent,
+  codeServerHttpsAgent,
+  getCodeApiAuthHeaders,
+  getStorageMetadata,
+} = require('@librechat/api');
 
 const { processCodeOutput, getSessionInfo, readSandboxFile, primeFiles } = require('./process');
 
@@ -231,6 +237,24 @@ describe('Code Process', () => {
   });
 
   describe('processCodeOutput', () => {
+    it('forwards Code API auth headers when downloading generated output', async () => {
+      getCodeApiAuthHeaders.mockResolvedValueOnce({ Authorization: 'Bearer codeapi-token' });
+      mockAxios.mockResolvedValue({ data: Buffer.alloc(100) });
+
+      await processCodeOutput(baseParams);
+
+      expect(getCodeApiAuthHeaders).toHaveBeenCalledWith(mockReq);
+      expect(mockAxios).toHaveBeenCalledWith(
+        expect.objectContaining({
+          method: 'get',
+          headers: expect.objectContaining({
+            Authorization: 'Bearer codeapi-token',
+            'User-Agent': 'LibreChat/1.0',
+          }),
+        }),
+      );
+    });
+
     describe('image file processing', () => {
       it('should process image files using convertImage', async () => {
         const imageParams = { ...baseParams, name: 'chart.png' };
@@ -1008,6 +1032,34 @@ describe('Code Process', () => {
         expect(callConfig.httpAgent.keepAlive).toBe(false);
         expect(callConfig.httpsAgent.keepAlive).toBe(false);
       });
+
+      it('forwards Code API auth headers when checking session object freshness', async () => {
+        getCodeApiAuthHeaders.mockResolvedValueOnce({ Authorization: 'Bearer freshness-token' });
+        mockAxios.mockResolvedValue({
+          data: { lastModified: '2024-01-01T00:00:00Z' },
+        });
+
+        await getSessionInfo(
+          {
+            kind: 'user',
+            id: 'user-123',
+            storage_session_id: 'session-123',
+            file_id: 'file-123',
+          },
+          mockReq,
+        );
+
+        expect(getCodeApiAuthHeaders).toHaveBeenCalledWith(mockReq);
+        expect(mockAxios).toHaveBeenCalledWith(
+          expect.objectContaining({
+            method: 'get',
+            headers: expect.objectContaining({
+              Authorization: 'Bearer freshness-token',
+              'User-Agent': 'LibreChat/1.0',
+            }),
+          }),
+        );
+      });
     });
 
     describe('deferred-preview flow (office-bucket files)', () => {
@@ -1465,6 +1517,24 @@ describe('Code Process', () => {
         expect(call.httpAgent).toBe(codeServerHttpAgent);
         expect(call.httpsAgent).toBe(codeServerHttpsAgent);
       });
+
+      it('forwards Code API auth headers when reading from the sandbox', async () => {
+        getCodeApiAuthHeaders.mockResolvedValueOnce({ Authorization: 'Bearer sandbox-token' });
+        mockAxios.mockResolvedValueOnce({ data: { stdout: 'x', stderr: '' } });
+
+        await readSandboxFile({ file_path: '/mnt/data/x.txt', req: mockReq });
+
+        expect(getCodeApiAuthHeaders).toHaveBeenCalledWith(mockReq);
+        expect(mockAxios).toHaveBeenCalledWith(
+          expect.objectContaining({
+            method: 'post',
+            headers: expect.objectContaining({
+              Authorization: 'Bearer sandbox-token',
+              'User-Agent': 'LibreChat/1.0',
+            }),
+          }),
+        );
+      });
     });
 
     describe('response handling', () => {
diff --git a/api/server/services/ToolService.js b/api/server/services/ToolService.js
index e15d802973..2e4d533441 100644
--- a/api/server/services/ToolService.js
+++ b/api/server/services/ToolService.js
@@ -21,6 +21,7 @@ const {
   buildOAuthToolCallName,
   buildToolClassification,
   buildWebSearchDynamicContext,
+  getCodeApiAuthHeaders,
 } = require('@librechat/api');
 const {
   Time,
@@ -1009,6 +1010,7 @@ async function loadAgentTools({
       agentId: agent.id,
       agentToolOptions: agent.tool_options,
       deferredToolsEnabled,
+      authHeaders: () => getCodeApiAuthHeaders(req),
     });
 
   const agentTools = [];
@@ -1279,10 +1281,12 @@ async function loadToolsForExecution({
     configurable.toolRegistry = toolRegistry;
     try {
       /**
-       * PTC auth is handled by the agents library / sandbox service
-       * directly; LibreChat no longer threads a per-run credential.
+       * LibreChat threads per-request Code API auth through the agents
+       * library so PTC calls share the same managed auth context.
        */
-      const ptcTool = createProgrammaticToolCallingTool({});
+      const ptcTool = createProgrammaticToolCallingTool({
+        authHeaders: () => getCodeApiAuthHeaders(req),
+      });
       allLoadedTools.push(ptcTool);
     } catch (error) {
       logger.error('[loadToolsForExecution] Error creating PTC tool:', error);
@@ -1292,7 +1296,9 @@ async function loadToolsForExecution({
   const isBashTool = toolNames.includes(AgentConstants.BASH_TOOL);
   if (isBashTool) {
     try {
-      const bashTool = createBashExecutionTool({});
+      const bashTool = createBashExecutionTool({
+        authHeaders: () => getCodeApiAuthHeaders(req),
+      });
       allLoadedTools.push(bashTool);
     } catch (error) {
       logger.error('[loadToolsForExecution] Failed to create bash_tool', error);
diff --git a/package-lock.json b/package-lock.json
index 93452126a7..e49a553123 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -60,7 +60,7 @@
         "@azure/storage-blob": "^12.30.0",
         "@google/genai": "^1.19.0",
         "@keyv/redis": "^4.3.3",
-        "@librechat/agents": "^3.1.83",
+        "@librechat/agents": "^3.1.84",
         "@librechat/api": "*",
         "@librechat/data-schemas": "*",
         "@microsoft/microsoft-graph-client": "^3.0.7",
@@ -12088,9 +12088,9 @@
       }
     },
     "node_modules/@librechat/agents": {
-      "version": "3.1.83",
-      "resolved": "https://registry.npmjs.org/@librechat/agents/-/agents-3.1.83.tgz",
-      "integrity": "sha512-6d+GOrR9ORe0a+ofwcJLWXbEP5VIurKxu4bWnOPpLMj5+rPDeTPgfGrmGwPrREQPTkFWpMb8VkEb7iP2ve3XzA==",
+      "version": "3.1.84",
+      "resolved": "https://registry.npmjs.org/@librechat/agents/-/agents-3.1.84.tgz",
+      "integrity": "sha512-scAAdh11aHJlvVVACl6FaiGdz+UZDVkSUb99PZjNAql6BQ//I/pgzBrZ10Q4VNp65cMRYPI6GqAAGQb2MFCA/Q==",
       "license": "MIT",
       "dependencies": {
         "@anthropic-ai/sdk": "^0.92.0",
@@ -44658,7 +44658,7 @@
         "@azure/storage-blob": "^12.30.0",
         "@google/genai": "^1.19.0",
         "@keyv/redis": "^4.3.3",
-        "@librechat/agents": "^3.1.83",
+        "@librechat/agents": "^3.1.84",
         "@librechat/data-schemas": "*",
         "@modelcontextprotocol/sdk": "^1.29.0",
         "@smithy/node-http-handler": "^4.4.5",
diff --git a/packages/api/package.json b/packages/api/package.json
index ab0c76608f..43eedb53f7 100644
--- a/packages/api/package.json
+++ b/packages/api/package.json
@@ -98,7 +98,7 @@
     "@azure/storage-blob": "^12.30.0",
     "@google/genai": "^1.19.0",
     "@keyv/redis": "^4.3.3",
-    "@librechat/agents": "^3.1.83",
+    "@librechat/agents": "^3.1.84",
     "@librechat/data-schemas": "*",
     "@modelcontextprotocol/sdk": "^1.29.0",
     "@smithy/node-http-handler": "^4.4.5",
diff --git a/packages/api/src/agents/handlers.ts b/packages/api/src/agents/handlers.ts
index 05f892eff8..c8153ba277 100644
--- a/packages/api/src/agents/handlers.ts
+++ b/packages/api/src/agents/handlers.ts
@@ -104,7 +104,7 @@ export interface ToolExecuteOptions {
     files: Array<{ fileId: string; filename: string }>;
   }>;
   /** Checks if a code env file is still active. Returns lastModified or null. */
-  getSessionInfo?: (ref: CodeEnvRef) => Promise<string | null>;
+  getSessionInfo?: (ref: CodeEnvRef, req?: ServerRequest) => Promise<string | null>;
   /** 23-hour freshness check */
   checkIfActive?: (dateString: string) => boolean;
   /** Persists `codeEnvRef` on skill files after upload */
@@ -147,6 +147,7 @@ export interface ToolExecuteOptions {
     file_path: string;
     session_id?: string;
     files?: Array<{ id: string; name: string; session_id?: string }>;
+    req?: ServerRequest;
   }) => Promise<{ content: string } | null>;
 }
 
@@ -332,6 +333,7 @@ async function handleSandboxFileFallback(
   tc: ToolCallRequest,
   filePath: string,
   options: ToolExecuteOptions,
+  req?: ServerRequest,
 ): Promise<ToolExecuteResult> {
   const ext = lowercaseExtension(filePath);
   if (BINARY_EXTENSIONS_NEVER_READABLE.has(ext)) {
@@ -361,6 +363,7 @@ async function handleSandboxFileFallback(
       file_path: filePath,
       session_id: ctx?.session_id,
       files: ctx?.files,
+      ...(req ? { req } : {}),
     });
     if (!result || result.content == null) {
       return {
@@ -450,7 +453,7 @@ async function handleReadFileCall(
    */
   if (args.file_path.startsWith('/mnt/data/')) {
     if (codeEnvAvailable) {
-      return handleSandboxFileFallback(tc, args.file_path, options);
+      return handleSandboxFileFallback(tc, args.file_path, options, req);
     }
     return {
       toolCallId: tc.id,
@@ -463,7 +466,7 @@ async function handleReadFileCall(
   const slashIdx = args.file_path.indexOf('/');
   if (slashIdx < 1) {
     if (codeEnvAvailable) {
-      return handleSandboxFileFallback(tc, args.file_path, options);
+      return handleSandboxFileFallback(tc, args.file_path, options, req);
     }
     return {
       toolCallId: tc.id,
@@ -483,7 +486,7 @@ async function handleReadFileCall(
      * dead-ending with a skill-centric error message.
      */
     if (codeEnvAvailable) {
-      return handleSandboxFileFallback(tc, args.file_path, options);
+      return handleSandboxFileFallback(tc, args.file_path, options, req);
     }
     return {
       toolCallId: tc.id,
@@ -502,7 +505,7 @@ async function handleReadFileCall(
    */
   if (!skillsEffectivelyEnabled) {
     if (codeEnvAvailable) {
-      return handleSandboxFileFallback(tc, args.file_path, options);
+      return handleSandboxFileFallback(tc, args.file_path, options, req);
     }
     return {
       toolCallId: tc.id,
@@ -544,7 +547,7 @@ async function handleReadFileCall(
   const activeSkillNames = mergedConfigurable?.activeSkillNames as Set<string> | undefined;
   if (activeSkillNames && !activeSkillNames.has(skillName) && !isPrimedThisTurn) {
     if (codeEnvAvailable) {
-      return handleSandboxFileFallback(tc, args.file_path, options);
+      return handleSandboxFileFallback(tc, args.file_path, options, req);
     }
     return {
       toolCallId: tc.id,
diff --git a/packages/api/src/agents/skillFiles.spec.ts b/packages/api/src/agents/skillFiles.spec.ts
index 4338b34e4e..a571e9a0af 100644
--- a/packages/api/src/agents/skillFiles.spec.ts
+++ b/packages/api/src/agents/skillFiles.spec.ts
@@ -274,17 +274,28 @@ describe('primeInvokedSkills — execute_code capability gate', () => {
       },
     ]);
     const batchUploadCodeEnvFiles = jest.fn();
+    const getSessionInfo = jest.fn().mockResolvedValue('2026-05-06T00:00:00Z');
     const deps = makeDeps({
       codeEnvAvailable: true,
       listSkillFiles,
       batchUploadCodeEnvFiles,
-      getSessionInfo: jest.fn().mockResolvedValue('2026-05-06T00:00:00Z'),
+      getSessionInfo,
       checkIfActive: jest.fn().mockReturnValue(true),
     });
 
     const result = await primeInvokedSkills(deps);
 
     expect(batchUploadCodeEnvFiles).not.toHaveBeenCalled();
+    expect(getSessionInfo).toHaveBeenCalledWith(
+      {
+        kind: 'skill',
+        id: SKILL_ID.toString(),
+        storage_session_id: 'session-cached',
+        file_id: 'file-cached',
+        version: SKILL_VERSION,
+      },
+      deps.req,
+    );
     const codeSession = result.initialSessions?.get('execute_code');
     expect(codeSession?.files).toEqual([
       {
diff --git a/packages/api/src/agents/skillFiles.ts b/packages/api/src/agents/skillFiles.ts
index dc48914b83..3081d4b332 100644
--- a/packages/api/src/agents/skillFiles.ts
+++ b/packages/api/src/agents/skillFiles.ts
@@ -51,7 +51,7 @@ export interface PrimeSkillFilesParams {
     files: Array<{ fileId: string; filename: string }>;
   }>;
   /** Checks if a code env file is still active. Returns lastModified timestamp or null. */
-  getSessionInfo?: (ref: CodeEnvRef) => Promise<string | null>;
+  getSessionInfo?: (ref: CodeEnvRef, req?: ServerRequest) => Promise<string | null>;
   /** 23-hour freshness check */
   checkIfActive?: (dateString: string) => boolean;
   /** Persists `codeEnvRef` on skill files after upload. Implementations
@@ -128,7 +128,7 @@ export async function primeSkillFiles(
       try {
         const checkResults = await Promise.all(
           Array.from(refsBySession.values()).map(async (ref) => {
-            const lastModified = await getSessionInfo(ref);
+            const lastModified = await getSessionInfo(ref, req);
             return !!(lastModified && checkIfActive(lastModified));
           }),
         );
@@ -421,7 +421,7 @@ export async function primeInvokedSkills(
         const checkResults = await Promise.all(
           Array.from(refsBySession.values()).map(async (ref) => {
             try {
-              const lastModified = await deps.getSessionInfo?.(ref);
+              const lastModified = await deps.getSessionInfo?.(ref, deps.req);
               return !!(lastModified && deps.checkIfActive?.(lastModified));
             } catch {
               return false;
@@ -470,7 +470,7 @@ export async function primeInvokedSkills(
     // Per-skill upload: each skill gets its own storage session keyed
     // by `(kind: 'skill', id: skillId, version: skill.version)`.
     // primeSkillFiles handles freshness caching per-skill, so only
-    // expired skills re-upload. CodeAPI handles mixed
+    // expired skills re-upload. Code API handles mixed
     // storage_session_ids natively.
     const allPrimedFiles: Array<{
       id: string;
diff --git a/packages/api/src/auth/codeapi.spec.ts b/packages/api/src/auth/codeapi.spec.ts
new file mode 100644
index 0000000000..4e678ac048
--- /dev/null
+++ b/packages/api/src/auth/codeapi.spec.ts
@@ -0,0 +1,281 @@
+import { createHash, generateKeyPairSync, verify as cryptoVerify } from 'crypto';
+import type { KeyObject } from 'crypto';
+import type { ServerRequest } from '~/types';
+import { getCodeApiAuthHeaders, mintCodeApiToken } from './codeapi';
+
+jest.mock(
+  '@librechat/data-schemas',
+  () => ({
+    getTenantId: jest.fn(),
+  }),
+  { virtual: true },
+);
+
+jest.mock('~/utils', () => ({
+  isEnabled: (value?: string) => value === 'true' || value === '1',
+}));
+
+const mockGetTenantId = jest.requireMock('@librechat/data-schemas').getTenantId as jest.Mock;
+
+const ENV_KEYS = [
+  'CODEAPI_AUTH_PROVIDER',
+  'CODEAPI_JWT_ENABLED',
+  'CODEAPI_JWT_PRIVATE_KEY',
+  'CODEAPI_JWT_PRIVATE_KEY_BASE64',
+  'CODEAPI_JWT_PRIVATE_JWK_JSON',
+  'CODEAPI_JWT_ALGORITHM',
+  'CODEAPI_JWT_KID',
+  'CODEAPI_JWT_KEY_ID',
+  'CODEAPI_JWT_ISSUER',
+  'CODEAPI_JWT_AUDIENCE',
+  'CODEAPI_JWT_TTL_SECONDS',
+  'CODEAPI_JWT_MINT_CACHE_SECONDS',
+  'CODEAPI_JWT_SINGLE_TENANT_ID',
+  'TENANT_ISOLATION_STRICT',
+  'OPENID_REUSE_TOKENS',
+] as const;
+
+type Claims = Record<string, unknown>;
+
+function baseRequest(overrides: Record<string, unknown> = {}): ServerRequest {
+  return {
+    user: {
+      _id: { toString: () => 'user_123' },
+      tenantId: 'tenant_abc',
+      role: 'USER',
+      provider: 'local',
+      ...overrides,
+    },
+    body: { tenant_id: 'spoofed_tenant' },
+    headers: { 'x-tenant-id': 'spoofed_header_tenant' },
+  } as unknown as ServerRequest;
+}
+
+function decodeToken(token: string): {
+  header: Claims;
+  claims: Claims;
+  signingInput: string;
+  signature: Buffer;
+} {
+  const [header, payload, signature] = token.split('.') as [string, string, string];
+  return {
+    header: JSON.parse(Buffer.from(header, 'base64url').toString('utf8')) as Claims,
+    claims: JSON.parse(Buffer.from(payload, 'base64url').toString('utf8')) as Claims,
+    signingInput: `${header}.${payload}`,
+    signature: Buffer.from(signature, 'base64url'),
+  };
+}
+
+function expectedContextHash(input: {
+  userId: string;
+  tenantId: string;
+  role: string;
+  principalSource: string;
+  orgId?: string;
+  serviceId?: string;
+  chcUserId?: string;
+}): string {
+  return createHash('sha256')
+    .update(
+      JSON.stringify({
+        chc_user_id: input.chcUserId ?? '',
+        org_id: input.orgId ?? '',
+        principal_source: input.principalSource,
+        role: input.role,
+        service_id: input.serviceId ?? '',
+        sub: input.userId,
+        tenant_id: input.tenantId,
+      }),
+    )
+    .digest('hex');
+}
+
+describe('Code API JWT minting', () => {
+  const originalEnv = new Map<string, string | undefined>();
+  let publicKey: KeyObject;
+
+  beforeAll(() => {
+    for (const key of ENV_KEYS) {
+      originalEnv.set(key, process.env[key]);
+    }
+  });
+
+  beforeEach(() => {
+    const keyPair = generateKeyPairSync('ed25519');
+    publicKey = keyPair.publicKey;
+    process.env.CODEAPI_AUTH_PROVIDER = 'librechat-jwt';
+    process.env.CODEAPI_JWT_PRIVATE_JWK_JSON = JSON.stringify(
+      keyPair.privateKey.export({ format: 'jwk' }),
+    );
+    process.env.CODEAPI_JWT_ALGORITHM = 'EdDSA';
+    process.env.CODEAPI_JWT_KID = 'test-kid';
+    process.env.CODEAPI_JWT_ISSUER = 'librechat';
+    process.env.CODEAPI_JWT_AUDIENCE = 'codeapi';
+    process.env.CODEAPI_JWT_TTL_SECONDS = '300';
+    process.env.CODEAPI_JWT_MINT_CACHE_SECONDS = '30';
+    delete process.env.CODEAPI_JWT_PRIVATE_KEY;
+    delete process.env.CODEAPI_JWT_PRIVATE_KEY_BASE64;
+    delete process.env.CODEAPI_JWT_SINGLE_TENANT_ID;
+    delete process.env.TENANT_ISOLATION_STRICT;
+    delete process.env.OPENID_REUSE_TOKENS;
+    mockGetTenantId.mockReset();
+  });
+
+  afterAll(() => {
+    for (const key of ENV_KEYS) {
+      const value = originalEnv.get(key);
+      if (value === undefined) {
+        delete process.env[key];
+      } else {
+        process.env[key] = value;
+      }
+    }
+  });
+
+  it('mints a Code API-scoped token from canonical LibreChat JWT context', async () => {
+    jest.spyOn(Date, 'now').mockReturnValue(1_778_250_000_000);
+
+    const token = await mintCodeApiToken(baseRequest());
+    const decoded = decodeToken(token);
+
+    expect(decoded.header).toEqual({
+      alg: 'EdDSA',
+      typ: 'JWT',
+      kid: 'test-kid',
+    });
+    expect(
+      cryptoVerify(null, Buffer.from(decoded.signingInput), publicKey, decoded.signature),
+    ).toBe(true);
+    expect(decoded.claims).toMatchObject({
+      iss: 'librechat',
+      aud: 'codeapi',
+      sub: 'user_123',
+      iat: 1_778_250_000,
+      nbf: 1_778_250_000,
+      exp: 1_778_250_300,
+      tenant_id: 'tenant_abc',
+      role: 'USER',
+      principal_source: 'librechat_jwt',
+    });
+    expect(decoded.claims.auth_context_hash).toBe(
+      expectedContextHash({
+        userId: 'user_123',
+        tenantId: 'tenant_abc',
+        role: 'USER',
+        principalSource: 'librechat_jwt',
+      }),
+    );
+    expect(decoded.claims).not.toHaveProperty('refresh_token');
+    expect(decoded.claims).not.toHaveProperty('openid_token');
+  });
+
+  it('marks OpenID reuse callers without forwarding upstream credentials', async () => {
+    process.env.OPENID_REUSE_TOKENS = 'true';
+    const req = baseRequest({
+      provider: 'openid',
+      idOnTheSource: 'chc_user_123',
+      refreshToken: 'do-not-forward',
+      accessToken: 'do-not-forward',
+    });
+    req.authStrategy = 'openidJwt';
+
+    const token = await mintCodeApiToken(req);
+    const { claims } = decodeToken(token);
+
+    expect(claims).toMatchObject({
+      principal_source: 'openid_reuse',
+      chc_user_id: 'chc_user_123',
+    });
+    expect(JSON.stringify(claims)).not.toContain('do-not-forward');
+  });
+
+  it('marks OpenID users authenticated by LibreChat JWT as LibreChat JWT callers', async () => {
+    process.env.OPENID_REUSE_TOKENS = 'true';
+
+    const token = await mintCodeApiToken(baseRequest({ provider: 'openid' }));
+    const { claims } = decodeToken(token);
+
+    expect(claims.principal_source).toBe('librechat_jwt');
+  });
+
+  it('includes optional plan context when present without trusting caller input', async () => {
+    const token = await mintCodeApiToken(
+      baseRequest({
+        subscription: { planId: 'prod_plan_123' },
+      }),
+    );
+    const { claims } = decodeToken(token);
+
+    expect(claims.plan_id).toBe('prod_plan_123');
+    expect(claims).not.toHaveProperty('planId');
+  });
+
+  it('uses the single-tenant namespace when tenant context is absent outside strict mode', async () => {
+    mockGetTenantId.mockReturnValue(undefined);
+
+    const token = await mintCodeApiToken(baseRequest({ tenantId: undefined }));
+    const { claims } = decodeToken(token);
+
+    expect(claims.tenant_id).toBe('legacy');
+    expect(claims.auth_context_hash).toBe(
+      expectedContextHash({
+        userId: 'user_123',
+        tenantId: 'legacy',
+        role: 'USER',
+        principalSource: 'librechat_jwt',
+      }),
+    );
+  });
+
+  it('supports overriding the single-tenant namespace for local deployments', async () => {
+    process.env.CODEAPI_JWT_SINGLE_TENANT_ID = 'local-single-tenant';
+    mockGetTenantId.mockReturnValue(undefined);
+
+    const token = await mintCodeApiToken(baseRequest({ tenantId: undefined }));
+    const { claims } = decodeToken(token);
+
+    expect(claims.tenant_id).toBe('local-single-tenant');
+  });
+
+  it('rejects minting without tenant context in strict tenant mode', async () => {
+    process.env.TENANT_ISOLATION_STRICT = 'true';
+    mockGetTenantId.mockReturnValue(undefined);
+
+    await expect(mintCodeApiToken(baseRequest({ tenantId: undefined }))).rejects.toThrow(
+      'Code API JWT auth requires tenant context',
+    );
+  });
+
+  it('ignores caller-supplied tenant spoofing fields', async () => {
+    const token = await mintCodeApiToken(baseRequest({ tenantId: 'tenant_canonical' }));
+    const { claims } = decodeToken(token);
+
+    expect(claims.tenant_id).toBe('tenant_canonical');
+    expect(JSON.stringify(claims)).not.toContain('spoofed_tenant');
+    expect(JSON.stringify(claims)).not.toContain('spoofed_header_tenant');
+  });
+
+  it('caches minted tokens for at most the configured 30 second window', async () => {
+    const now = jest.spyOn(Date, 'now').mockReturnValue(1_778_250_000_000);
+    const req = baseRequest();
+
+    const first = await mintCodeApiToken(req);
+    const second = await mintCodeApiToken(req);
+    now.mockReturnValue(1_778_250_031_000);
+    const afterCacheWindow = await mintCodeApiToken(req);
+
+    expect(second).toBe(first);
+    expect(afterCacheWindow).not.toBe(first);
+  });
+
+  it('returns Authorization headers only when a request and managed auth are present', async () => {
+    await expect(getCodeApiAuthHeaders()).resolves.toEqual({});
+    await expect(getCodeApiAuthHeaders(baseRequest())).resolves.toEqual({
+      Authorization: expect.stringMatching(/^Bearer /),
+    });
+
+    process.env.CODEAPI_AUTH_PROVIDER = 'legacy-api-key';
+    delete process.env.CODEAPI_JWT_ENABLED;
+    await expect(getCodeApiAuthHeaders(baseRequest())).resolves.toEqual({});
+  });
+});
diff --git a/packages/api/src/auth/codeapi.ts b/packages/api/src/auth/codeapi.ts
new file mode 100644
index 0000000000..ab017bb9e4
--- /dev/null
+++ b/packages/api/src/auth/codeapi.ts
@@ -0,0 +1,380 @@
+import { getTenantId } from '@librechat/data-schemas';
+import { createHash, createPrivateKey, randomUUID, sign as cryptoSign } from 'crypto';
+import type { KeyObject, JsonWebKey } from 'crypto';
+import type { ServerRequest } from '~/types';
+import { isEnabled } from '~/utils';
+
+type CodeApiJwtAlg = 'EdDSA' | 'RS256';
+type PrincipalSource = 'librechat_jwt' | 'openid_reuse';
+
+interface CodeApiUserContext {
+  id?: string;
+  _id?: { toString(): string };
+  role?: string;
+  tenantId?: string | { toString(): string };
+  provider?: string;
+  orgId?: string;
+  serviceId?: string;
+  chcUserId?: string;
+  idOnTheSource?: string;
+  planId?: string;
+  subscription?: {
+    planId?: string;
+  };
+}
+
+interface CodeApiClaims {
+  iss: string;
+  aud: string;
+  sub: string;
+  iat: number;
+  nbf: number;
+  exp: number;
+  jti: string;
+  tenant_id: string;
+  role: string;
+  principal_source: PrincipalSource;
+  org_id?: string;
+  service_id?: string;
+  chc_user_id?: string;
+  plan_id?: string;
+  auth_context_hash: string;
+}
+
+interface SigningConfig {
+  alg: CodeApiJwtAlg;
+  kid: string;
+  issuer: string;
+  audience: string;
+  ttlSeconds: number;
+  cacheSeconds: number;
+  key: KeyObject;
+  rawKey: string;
+}
+
+interface CachedToken {
+  token: string;
+  expiresAt: number;
+  cachedUntil: number;
+}
+
+const DEFAULT_ISSUER = 'librechat';
+const DEFAULT_AUDIENCE = 'codeapi';
+const DEFAULT_KID = 'lc-codeapi-2026-05';
+const DEFAULT_SINGLE_TENANT_ID = 'legacy';
+const DEFAULT_TTL_SECONDS = 300;
+const DEFAULT_CACHE_SECONDS = 30;
+const MAX_TTL_SECONDS = 300;
+const MAX_CACHE_SECONDS = 30;
+const TOKEN_REUSE_SAFETY_WINDOW_SECONDS = 30;
+const TOKEN_CACHE_PRUNE_INTERVAL_SECONDS = 30;
+
+let signingConfigCache: SigningConfig | null = null;
+const tokenCache = new Map<string, CachedToken>();
+let tokenCacheLastPrunedAt = 0;
+
+function base64Url(value: Buffer | string): string {
+  return Buffer.from(value).toString('base64url');
+}
+
+function normalizePem(value: string): string {
+  return value.replace(/\\n/g, '\n').trim();
+}
+
+function getPrivateKeyRaw(): string {
+  const inlineKey = process.env.CODEAPI_JWT_PRIVATE_KEY;
+  if (inlineKey != null && inlineKey.trim() !== '') {
+    return normalizePem(inlineKey);
+  }
+  const base64Key = process.env.CODEAPI_JWT_PRIVATE_KEY_BASE64;
+  if (base64Key != null && base64Key.trim() !== '') {
+    return normalizePem(Buffer.from(base64Key, 'base64').toString('utf8'));
+  }
+  const jwkJson = process.env.CODEAPI_JWT_PRIVATE_JWK_JSON;
+  if (jwkJson != null && jwkJson.trim() !== '') {
+    return jwkJson.trim();
+  }
+  throw new Error('Code API JWT signing key is not configured');
+}
+
+function parseAlg(value: string | undefined): CodeApiJwtAlg {
+  if (value === 'RS256') {
+    return 'RS256';
+  }
+  if (value === undefined || value === '' || value === 'EdDSA') {
+    return 'EdDSA';
+  }
+  throw new Error(`Unsupported Code API JWT algorithm: ${value}`);
+}
+
+function parseCappedSeconds(value: string | undefined, fallback: number, max: number): number {
+  const parsed = Number(value);
+  if (!Number.isFinite(parsed) || parsed <= 0) {
+    return fallback;
+  }
+  return Math.min(Math.floor(parsed), max);
+}
+
+function createSigningKey(rawKey: string): KeyObject {
+  if (rawKey.startsWith('{')) {
+    return createPrivateKey({ key: JSON.parse(rawKey) as JsonWebKey, format: 'jwk' });
+  }
+  return createPrivateKey(rawKey);
+}
+
+function getSigningConfig(): SigningConfig {
+  const rawKey = getPrivateKeyRaw();
+  const alg = parseAlg(process.env.CODEAPI_JWT_ALGORITHM);
+  const kid = process.env.CODEAPI_JWT_KID ?? process.env.CODEAPI_JWT_KEY_ID ?? DEFAULT_KID;
+  const issuer = process.env.CODEAPI_JWT_ISSUER ?? DEFAULT_ISSUER;
+  const audience = process.env.CODEAPI_JWT_AUDIENCE ?? DEFAULT_AUDIENCE;
+  const ttlSeconds = parseCappedSeconds(
+    process.env.CODEAPI_JWT_TTL_SECONDS,
+    DEFAULT_TTL_SECONDS,
+    MAX_TTL_SECONDS,
+  );
+  const cacheSeconds = parseCappedSeconds(
+    process.env.CODEAPI_JWT_MINT_CACHE_SECONDS,
+    DEFAULT_CACHE_SECONDS,
+    MAX_CACHE_SECONDS,
+  );
+
+  if (
+    signingConfigCache &&
+    signingConfigCache.rawKey === rawKey &&
+    signingConfigCache.alg === alg &&
+    signingConfigCache.kid === kid &&
+    signingConfigCache.issuer === issuer &&
+    signingConfigCache.audience === audience &&
+    signingConfigCache.ttlSeconds === ttlSeconds &&
+    signingConfigCache.cacheSeconds === cacheSeconds
+  ) {
+    return signingConfigCache;
+  }
+
+  signingConfigCache = {
+    alg,
+    kid,
+    issuer,
+    audience,
+    ttlSeconds,
+    cacheSeconds,
+    rawKey,
+    key: createSigningKey(rawKey),
+  };
+  tokenCache.clear();
+  tokenCacheLastPrunedAt = 0;
+  return signingConfigCache;
+}
+
+function stringifyClaimValue(value: unknown): string | undefined {
+  if (typeof value === 'string' && value.trim() !== '') {
+    return value;
+  }
+  if (value && typeof value === 'object' && 'toString' in value) {
+    const stringValue = value.toString();
+    return stringValue.trim() === '' ? undefined : stringValue;
+  }
+  return undefined;
+}
+
+function resolveUser(req: ServerRequest): CodeApiUserContext {
+  const user = req.user as CodeApiUserContext | undefined;
+  if (!user) {
+    throw new Error('Code API token minting requires an authenticated user');
+  }
+  return user;
+}
+
+function resolveUserId(user: CodeApiUserContext): string {
+  const userId = stringifyClaimValue(user.id) ?? stringifyClaimValue(user._id);
+  if (!userId) {
+    throw new Error('Code API token minting requires a canonical user id');
+  }
+  return userId;
+}
+
+function resolveSingleTenantId(): string {
+  const configured = process.env.CODEAPI_JWT_SINGLE_TENANT_ID;
+  if (configured != null && configured.trim() !== '') {
+    return configured.trim();
+  }
+  return DEFAULT_SINGLE_TENANT_ID;
+}
+
+function resolveTenantId(user: CodeApiUserContext): string | undefined {
+  const tenantId = stringifyClaimValue(user.tenantId) ?? getTenantId();
+  if (tenantId) {
+    return tenantId;
+  }
+  if (isEnabled(process.env.TENANT_ISOLATION_STRICT)) {
+    return undefined;
+  }
+  return resolveSingleTenantId();
+}
+
+function isManagedCodeApiJwtMode(): boolean {
+  const provider = process.env.CODEAPI_AUTH_PROVIDER;
+  return provider === 'librechat-jwt' || provider === 'both';
+}
+
+export function isCodeApiJwtAuthEnabled(): boolean {
+  return isManagedCodeApiJwtMode() || isEnabled(process.env.CODEAPI_JWT_ENABLED);
+}
+
+function resolvePrincipalSource(req: ServerRequest): PrincipalSource {
+  if (req.authStrategy === 'openidJwt') {
+    return 'openid_reuse';
+  }
+  return 'librechat_jwt';
+}
+
+function canonicalContextHash(input: {
+  userId: string;
+  tenantId: string;
+  role: string;
+  principalSource: PrincipalSource;
+  orgId?: string;
+  serviceId?: string;
+  chcUserId?: string;
+}): string {
+  const canonical = {
+    chc_user_id: input.chcUserId ?? '',
+    org_id: input.orgId ?? '',
+    principal_source: input.principalSource,
+    role: input.role,
+    service_id: input.serviceId ?? '',
+    sub: input.userId,
+    tenant_id: input.tenantId,
+  };
+  return createHash('sha256').update(JSON.stringify(canonical)).digest('hex');
+}
+
+function buildClaims(req: ServerRequest, config: SigningConfig, now: number): CodeApiClaims {
+  const user = resolveUser(req);
+  const userId = resolveUserId(user);
+  const tenantId = resolveTenantId(user);
+  if (!tenantId) {
+    throw new Error('Code API JWT auth requires tenant context');
+  }
+
+  const role = user.role ?? 'USER';
+  const principalSource = resolvePrincipalSource(req);
+  const orgId = stringifyClaimValue(user.orgId);
+  const serviceId = stringifyClaimValue(user.serviceId);
+  const chcUserId = stringifyClaimValue(user.chcUserId) ?? stringifyClaimValue(user.idOnTheSource);
+  const planId = stringifyClaimValue(user.planId) ?? stringifyClaimValue(user.subscription?.planId);
+  const authContextHash = canonicalContextHash({
+    userId,
+    tenantId,
+    role,
+    principalSource,
+    orgId,
+    serviceId,
+    chcUserId,
+  });
+
+  return {
+    iss: config.issuer,
+    aud: config.audience,
+    sub: userId,
+    iat: now,
+    nbf: now,
+    exp: now + config.ttlSeconds,
+    jti: randomUUID(),
+    tenant_id: tenantId,
+    role,
+    principal_source: principalSource,
+    ...(orgId ? { org_id: orgId } : {}),
+    ...(serviceId ? { service_id: serviceId } : {}),
+    ...(chcUserId ? { chc_user_id: chcUserId } : {}),
+    ...(planId ? { plan_id: planId } : {}),
+    auth_context_hash: authContextHash,
+  };
+}
+
+function signJwt(config: SigningConfig, claims: CodeApiClaims): string {
+  const header = {
+    alg: config.alg,
+    typ: 'JWT',
+    kid: config.kid,
+  };
+  const signingInput = `${base64Url(JSON.stringify(header))}.${base64Url(JSON.stringify(claims))}`;
+  const signature = cryptoSign(
+    config.alg === 'RS256' ? 'RSA-SHA256' : null,
+    Buffer.from(signingInput),
+    config.key,
+  );
+  return `${signingInput}.${base64Url(signature)}`;
+}
+
+function cacheKey(config: SigningConfig, claims: CodeApiClaims): string {
+  return [
+    config.alg,
+    config.kid,
+    claims.sub,
+    claims.tenant_id,
+    claims.role,
+    claims.principal_source,
+    claims.org_id ?? '',
+    claims.service_id ?? '',
+    claims.chc_user_id ?? '',
+    claims.plan_id ?? '',
+    claims.auth_context_hash,
+  ].join(':');
+}
+
+function pruneTokenCache(now: number): void {
+  if (tokenCache.size === 0) {
+    return;
+  }
+  if (now - tokenCacheLastPrunedAt < TOKEN_CACHE_PRUNE_INTERVAL_SECONDS) {
+    return;
+  }
+
+  tokenCacheLastPrunedAt = now;
+  for (const [key, cached] of tokenCache) {
+    if (cached.cachedUntil <= now || cached.expiresAt <= now + TOKEN_REUSE_SAFETY_WINDOW_SECONDS) {
+      tokenCache.delete(key);
+    }
+  }
+}
+
+export async function mintCodeApiToken(req: ServerRequest): Promise<string> {
+  if (!isCodeApiJwtAuthEnabled()) {
+    return '';
+  }
+
+  const config = getSigningConfig();
+  const now = Math.floor(Date.now() / 1000);
+  pruneTokenCache(now);
+  const claims = buildClaims(req, config, now);
+  const key = cacheKey(config, claims);
+  const cached = tokenCache.get(key);
+  if (
+    cached &&
+    cached.cachedUntil > now &&
+    cached.expiresAt > now + TOKEN_REUSE_SAFETY_WINDOW_SECONDS
+  ) {
+    return cached.token;
+  }
+
+  const token = signJwt(config, claims);
+  tokenCache.set(key, {
+    token,
+    expiresAt: claims.exp,
+    cachedUntil: Math.min(
+      now + config.cacheSeconds,
+      claims.exp - TOKEN_REUSE_SAFETY_WINDOW_SECONDS,
+    ),
+  });
+  return token;
+}
+
+export async function getCodeApiAuthHeaders(req?: ServerRequest): Promise<Record<string, string>> {
+  if (!req || !isCodeApiJwtAuthEnabled()) {
+    return {};
+  }
+  const token = await mintCodeApiToken(req);
+  return token ? { Authorization: `Bearer ${token}` } : {};
+}
diff --git a/packages/api/src/auth/index.ts b/packages/api/src/auth/index.ts
index d3c8a02896..d3e08deb14 100644
--- a/packages/api/src/auth/index.ts
+++ b/packages/api/src/auth/index.ts
@@ -5,3 +5,4 @@ export * from './refresh';
 export * from './agent';
 export * from './password';
 export * from './invite';
+export * from './codeapi';
diff --git a/packages/api/src/tools/classification.ts b/packages/api/src/tools/classification.ts
index e945b43101..3214562102 100644
--- a/packages/api/src/tools/classification.ts
+++ b/packages/api/src/tools/classification.ts
@@ -187,6 +187,8 @@ export interface BuildToolClassificationParams {
   deferredToolsEnabled?: boolean;
   /** When true, skip creating tool instances (for event-driven mode) */
   definitionsOnly?: boolean;
+  /** Optional host-supplied Code API auth headers for remote programmatic execution. */
+  authHeaders?: () => Promise<Record<string, string>> | Record<string, string>;
 }
 
 /** Result from building tool classification */
@@ -251,6 +253,7 @@ export async function buildToolClassification(
     agentToolOptions,
     definitionsOnly = false,
     deferredToolsEnabled = true,
+    authHeaders,
   } = params;
   const additionalTools: GenericTool[] = [];
 
@@ -345,7 +348,9 @@ export async function buildToolClassification(
   }
 
   try {
-    const ptcTool = createProgrammaticToolCallingTool({});
+    const ptcTool = createProgrammaticToolCallingTool({ authHeaders } as Parameters<
+      typeof createProgrammaticToolCallingTool
+    >[0] & { authHeaders?: BuildToolClassificationParams['authHeaders'] });
     additionalTools.push(ptcTool);
 
     /** Add PTC definition for event-driven mode */
diff --git a/packages/api/src/types/http.ts b/packages/api/src/types/http.ts
index bc7b6dc943..219b2729f7 100644
--- a/packages/api/src/types/http.ts
+++ b/packages/api/src/types/http.ts
@@ -25,4 +25,6 @@ export type ServerRequest = Request<unknown, unknown, RequestBody> & {
   conversationCreatedAt?: string;
   /** Conversation loaded while resolving the prompt timestamp anchor, reused by save logic. */
   resolvedConversation?: Partial<TConversation> | null;
+  /** Passport strategy that populated req.user for this request. */
+  authStrategy?: string;
 };
diff --git a/packages/data-provider/src/codeEnvRef.ts b/packages/data-provider/src/codeEnvRef.ts
index 469592bfdc..81187ff78f 100644
--- a/packages/data-provider/src/codeEnvRef.ts
+++ b/packages/data-provider/src/codeEnvRef.ts
@@ -5,14 +5,14 @@
  * both at once.
  *
  * - `skill`: shared per skill identity. Cross-user-within-tenant
- *   sharing. CodeAPI sessionKey omits the user dimension.
+ *   sharing. Code API sessionKey omits the user dimension.
  *   `version` is required (the skill's monotonic counter scopes the
  *   cache per revision so any edit invalidates the prior cache
  *   entry naturally).
  * - `agent`: shared per agent identity. Same sharing semantic as
  *   skills (agents are addressable resources accessible to a
  *   permission-defined audience).
- * - `user`: user-private. CodeAPI sessionKey is keyed by the
+ * - `user`: user-private. Code API sessionKey is keyed by the
  *   requesting user from auth context. Used for chat attachments
  *   and code-output artifacts.
  */
@@ -30,7 +30,7 @@ export type CodeEnvKind = (typeof CODE_ENV_KINDS)[number];
  * sandbox-run session.
  *
  * `kind` and `id` together name the resource that owns this file's
- * storage session. CodeAPI uses them (plus the auth-context tenant
+ * storage session. Code API uses them (plus the auth-context tenant
  * id) to derive the sessionKey, which determines who shares the
  * cache. Cross-user sharing for shared resources (skills, agents) is
  * a designed property of the kind switch, not an emergent side