diff --git a/packages/cli/src/auth/client.test.ts b/packages/cli/src/auth/client.test.ts
index a2343a32f..844502d77 100644
--- a/packages/cli/src/auth/client.test.ts
+++ b/packages/cli/src/auth/client.test.ts
@@ -84,7 +84,6 @@ describe("auth/client", () => {
       authorization: "Bearer at_123",
       [HEYGEN_CLI_SOURCE_HEADER]: HEYGEN_CLI_SOURCE,
       [HEYGEN_CLIENT_SOURCE_HEADER]: HEYGEN_CLIENT_SOURCE,
-      heygen_route: "canary",
     });
   });
 
@@ -92,7 +91,6 @@ describe("auth/client", () => {
     expect(buildAuthHeaders(apiKeyCred())).toEqual({
       "x-api-key": "hg_x",
       [HEYGEN_CLIENT_SOURCE_HEADER]: HEYGEN_CLIENT_SOURCE,
-      heygen_route: "canary",
     });
   });
 
diff --git a/packages/cli/src/auth/client.ts b/packages/cli/src/auth/client.ts
index 659e64e00..0bb3f92bb 100644
--- a/packages/cli/src/auth/client.ts
+++ b/packages/cli/src/auth/client.ts
@@ -19,7 +19,6 @@ import { ErrApi, ErrUnauthenticated, isAuthError } from "./errors.js";
 import type { ResolvedCredential } from "./resolver.js";
 import { scrubCredentials } from "./scrub.js";
 import type { OAuthTokens } from "./store.js";
-import { withHeygenCanaryRoute } from "../utils/heygenRoute.js";
 
 const DEFAULT_BASE_URL = "https://api.heygen.com";
 export const HEYGEN_CLI_SOURCE_HEADER = "X-HeyGen-Source";
@@ -186,20 +185,17 @@ export class AuthClient {
 
 export function buildAuthHeaders(credential: ResolvedCredential): Record<string, string> {
   if (credential.type === "oauth") {
-    return withHeygenCanaryRoute({
+    return {
       authorization: `Bearer ${credential.access_token}`,
       [HEYGEN_CLI_SOURCE_HEADER]: HEYGEN_CLI_SOURCE,
       [HEYGEN_CLIENT_SOURCE_HEADER]: HEYGEN_CLIENT_SOURCE,
-    });
+    };
   }
   // API-key traffic keeps the normal billing path; the backend ignores the
   // cli-source header for it, so we don't send it (avoids a contradictory
   // "cli-source claim on an API-key request"). The tool-attribution header IS
   // sent here — an API-key hyperframes call is still hyperframes usage.
-  return withHeygenCanaryRoute({
-    "x-api-key": credential.key,
-    [HEYGEN_CLIENT_SOURCE_HEADER]: HEYGEN_CLIENT_SOURCE,
-  });
+  return { "x-api-key": credential.key, [HEYGEN_CLIENT_SOURCE_HEADER]: HEYGEN_CLIENT_SOURCE };
 }
 
 async function safeText(res: Response): Promise<string> {
diff --git a/packages/cli/src/auth/oauth.test.ts b/packages/cli/src/auth/oauth.test.ts
index 2c2258f6a..fcc9ac515 100644
--- a/packages/cli/src/auth/oauth.test.ts
+++ b/packages/cli/src/auth/oauth.test.ts
@@ -173,10 +173,8 @@ describe("auth/oauth", () => {
     it("posts grant_type=refresh_token and persists the response", async () => {
       process.env["HEYGEN_API_URL"] = "https://api.test.example";
       let capturedBody: string | undefined;
-      let capturedHeaders: HeadersInit | undefined;
       const fetchImpl = (async (_url: string, init?: RequestInit) => {
         capturedBody = init?.body as string;
-        capturedHeaders = init?.headers;
         return new Response(
           JSON.stringify({
             access_token: "new_at",
@@ -194,7 +192,6 @@ describe("auth/oauth", () => {
       expect(tokens.refresh_token).toBe("new_rt");
       expect(capturedBody).toContain("grant_type=refresh_token");
       expect(capturedBody).toContain("refresh_token=old_rt");
-      expect(capturedHeaders).toMatchObject({ heygen_route: "canary" });
 
       // Should have persisted.
       const { credentials } = await readStore();
@@ -298,10 +295,8 @@ describe("auth/oauth", () => {
 
     it("sends token_type_hint when provided", async () => {
       let capturedBody = "";
-      let capturedHeaders: HeadersInit | undefined;
       const fetchImpl = (async (_url: string, init?: RequestInit) => {
         capturedBody = init?.body as string;
-        capturedHeaders = init?.headers;
         return new Response("", { status: 200 });
       }) as unknown as typeof fetch;
       await revokeTokens("tok", {
@@ -309,7 +304,6 @@ describe("auth/oauth", () => {
         token_type_hint: "refresh_token",
       });
       expect(capturedBody).toContain("token_type_hint=refresh_token");
-      expect(capturedHeaders).toMatchObject({ heygen_route: "canary" });
     });
 
     it("returns silently when client_id is unconfigured (no throw)", async () => {
@@ -343,21 +337,6 @@ describe("auth/oauth", () => {
   });
 
   describe("startAuthorizationCodeFlow persistence", () => {
-    it("routes the authorization-code exchange through canary", async () => {
-      let capturedHeaders: HeadersInit | undefined;
-      const fetchImpl = (async (_url: string | URL | Request, init?: RequestInit) => {
-        capturedHeaders = init?.headers;
-        return new Response(JSON.stringify({ access_token: "new_at" }), {
-          status: 200,
-          headers: { "content-type": "application/json" },
-        });
-      }) as typeof fetch;
-
-      await startAuthorizationCodeFlow({ fetchImpl });
-
-      expect(capturedHeaders).toMatchObject({ heygen_route: "canary" });
-    });
-
     it("overwrites the OAuth block on fresh login (no inherited refresh_token)", async () => {
       // Pre-seed a prior session whose refresh_token must NOT leak into
       // the new login when the new response omits one.
@@ -471,11 +450,7 @@ describe("auth/oauth", () => {
     });
 
     it("polls pending and slow_down responses without persisting before identity verification", async () => {
-      const requests: Array<{
-        url: string;
-        body: URLSearchParams;
-        headers: HeadersInit | undefined;
-      }> = [];
+      const requests: Array<{ url: string; body: URLSearchParams }> = [];
       const responses = [
         new Response(
           JSON.stringify({
@@ -510,7 +485,6 @@ describe("auth/oauth", () => {
         requests.push({
           url: String(url),
           body: new URLSearchParams(String(init?.body ?? "")),
-          headers: init?.headers,
         });
       });
       const sleeps: number[] = [];
@@ -540,12 +514,6 @@ describe("auth/oauth", () => {
       expect(requests[1]?.body.get("grant_type")).toBe(
         "urn:ietf:params:oauth:grant-type:device_code",
       );
-      expect(requests.map(({ headers }) => headers)).toEqual([
-        expect.objectContaining({ heygen_route: "canary" }),
-        expect.objectContaining({ heygen_route: "canary" }),
-        expect.objectContaining({ heygen_route: "canary" }),
-        expect.objectContaining({ heygen_route: "canary" }),
-      ]);
       expect((await readStore()).source).toBe("absent");
 
       await persistFreshOAuth(tokens);
diff --git a/packages/cli/src/auth/oauth.ts b/packages/cli/src/auth/oauth.ts
index 1c8a2d99a..a1c0a2047 100644
--- a/packages/cli/src/auth/oauth.ts
+++ b/packages/cli/src/auth/oauth.ts
@@ -54,7 +54,6 @@ import {
   type StoredUserInfo,
 } from "./store.js";
 import { c } from "../ui/colors.js";
-import { withHeygenCanaryRoute } from "../utils/heygenRoute.js";
 
 const REVOKE_TIMEOUT_MS = 5_000;
 const MIN_EXPIRES_IN_SECONDS = 30;
@@ -256,10 +255,10 @@ async function requestDeviceAuthorization(
     async (signal) => {
       const response = await runtime.fetchImpl(deviceAuthorizationEndpoint(), {
         method: "POST",
-        headers: withHeygenCanaryRoute({
+        headers: {
           "content-type": "application/x-www-form-urlencoded",
           accept: "application/json",
-        }),
+        },
         body: new URLSearchParams({ client_id: runtime.clientId, scope }).toString(),
         signal,
       });
@@ -304,10 +303,10 @@ async function requestDeviceToken(
     async (signal) => {
       const response = await runtime.fetchImpl(tokenEndpoint(), {
         method: "POST",
-        headers: withHeygenCanaryRoute({
+        headers: {
           "content-type": "application/x-www-form-urlencoded",
           accept: "application/json",
-        }),
+        },
         body: new URLSearchParams({
           grant_type: DEVICE_CODE_GRANT_TYPE,
           device_code: deviceCode,
@@ -395,10 +394,10 @@ export async function refreshTokens(
 
   const res = await fetchImpl(tokenEndpoint(), {
     method: "POST",
-    headers: withHeygenCanaryRoute({
+    headers: {
       "content-type": "application/x-www-form-urlencoded",
       accept: "application/json",
-    }),
+    },
     body: body.toString(),
   });
 
@@ -447,9 +446,7 @@ export async function revokeTokens(token: string, opts: RevokeOptions = {}): Pro
   try {
     const res = await fetchImpl(revokeEndpoint(), {
       method: "POST",
-      headers: withHeygenCanaryRoute({
-        "content-type": "application/x-www-form-urlencoded",
-      }),
+      headers: { "content-type": "application/x-www-form-urlencoded" },
       body: body.toString(),
       signal: controller.signal,
     });
@@ -510,10 +507,10 @@ async function exchangeCodeForTokens(args: {
   });
   const res = await fetchImpl(tokenEndpoint(), {
     method: "POST",
-    headers: withHeygenCanaryRoute({
+    headers: {
       "content-type": "application/x-www-form-urlencoded",
       accept: "application/json",
-    }),
+    },
     body: body.toString(),
   });
   if (res.status === 400 || res.status === 401) {
diff --git a/packages/cli/src/utils/heygenRoute.ts b/packages/cli/src/utils/heygenRoute.ts
deleted file mode 100644
index 0654fab21..000000000
--- a/packages/cli/src/utils/heygenRoute.ts
+++ /dev/null
@@ -1,9 +0,0 @@
-const HEYGEN_ROUTE_HEADER = "heygen_route";
-const HEYGEN_CANARY_ROUTE = "canary";
-
-/** Route CLI-owned HeyGen API calls through the EF canary deployment. */
-export function withHeygenCanaryRoute(
-  headers: Record<string, string> = {},
-): Record<string, string> {
-  return { ...headers, [HEYGEN_ROUTE_HEADER]: HEYGEN_CANARY_ROUTE };
-}
diff --git a/packages/cli/src/utils/publishProject.e2e.test.ts b/packages/cli/src/utils/publishProject.e2e.test.ts
index b3836c071..c8e58f164 100644
--- a/packages/cli/src/utils/publishProject.e2e.test.ts
+++ b/packages/cli/src/utils/publishProject.e2e.test.ts
@@ -36,7 +36,6 @@ describeE2E("publish stable-URL round trip (live server)", () => {
   async function fetchPublicProject(projectId: string): Promise<Record<string, unknown>> {
     const response = await fetch(
       `${getPublishApiBaseUrl()}/v1/hyperframes/projects/${projectId}/public`,
-      { headers: { heygen_route: "canary" } },
     );
     expect(response.ok).toBe(true);
     const payload = (await response.json()) as { data: Record<string, unknown> };
diff --git a/packages/cli/src/utils/publishProject.test.ts b/packages/cli/src/utils/publishProject.test.ts
index 8cff80828..2b6e62979 100644
--- a/packages/cli/src/utils/publishProject.test.ts
+++ b/packages/cli/src/utils/publishProject.test.ts
@@ -551,7 +551,7 @@ afterEach(() => {
   vi.unstubAllEnvs();
 });
 
-const jsonHeaders = { "content-type": "application/json", heygen_route: "canary" };
+const jsonHeaders = { "content-type": "application/json" };
 const signedStagedS3Url =
   "https://s3.example.com/upload?X-Amz-SignedHeaders=content-length;content-type;host;x-amz-server-side-encryption";
 
@@ -662,7 +662,7 @@ describe("publishProjectArchive", () => {
       expect(fetchMock).toHaveBeenCalledTimes(2);
       expectFetchCall(fetchMock, 2, "https://api2.heygen.com/v1/hyperframes/projects/publish", {
         method: "POST",
-        headers: { heygen_route: "canary" },
+        headers: {},
       });
     } finally {
       rmSync(dir, { recursive: true, force: true });
diff --git a/packages/cli/src/utils/publishProject.ts b/packages/cli/src/utils/publishProject.ts
index ab4411b26..c383b1f15 100644
--- a/packages/cli/src/utils/publishProject.ts
+++ b/packages/cli/src/utils/publishProject.ts
@@ -5,7 +5,6 @@ import AdmZip from "adm-zip";
 import ignore, { type Ignore } from "ignore";
 import { CSS_URL_RE, isNonRelativeUrl, isPathInside } from "@hyperframes/core";
 import { buildAuthHeaders } from "../auth/client.js";
-import { withHeygenCanaryRoute } from "./heygenRoute.js";
 import { tryResolveCredential } from "../auth/index.js";
 import { writeProjectLink } from "./projectLink.js";
 
@@ -558,7 +557,7 @@ async function publishProjectArchiveDirect(
     "file",
     new File([archiveArrayBuffer(archive)], `${title}.zip`, { type: PUBLISH_CONTENT_TYPE }),
   );
-  const headers = withHeygenCanaryRoute(authHeaders);
+  const headers: Record<string, string> = { ...authHeaders };
 
   const response = await fetchForPublish(
     `${apiBaseUrl}/v1/hyperframes/projects/publish`,
@@ -621,10 +620,10 @@ async function publishProjectArchiveStaged(
         content_type: PUBLISH_CONTENT_TYPE,
         content_length: archive.buffer.byteLength,
       }),
-      headers: withHeygenCanaryRoute({
+      headers: {
         ...authHeaders,
         "content-type": "application/json",
-      }),
+      },
       signal: AbortSignal.timeout(PUBLISH_METADATA_TIMEOUT_MS),
     }),
     "Failed to prepare project upload",
@@ -654,10 +653,10 @@ async function publishProjectArchiveStaged(
         ...(isPublic ? { is_public: true } : {}),
         ...(projectId ? { project_id: projectId } : {}),
       }),
-      headers: withHeygenCanaryRoute({
+      headers: {
         ...authHeaders,
         "content-type": "application/json",
-      }),
+      },
       signal: AbortSignal.timeout(uploadTimeoutMs(archive.buffer.byteLength)),
     }),
     "Failed to finalize project publish",
diff --git a/packages/cli/src/utils/submitFeedback.test.ts b/packages/cli/src/utils/submitFeedback.test.ts
index b69568f2b..608ad94ff 100644
--- a/packages/cli/src/utils/submitFeedback.test.ts
+++ b/packages/cli/src/utils/submitFeedback.test.ts
@@ -35,7 +35,7 @@ describe("submitFeedback", () => {
       "https://api.example.com/v1/hyperframes/feedback",
       expect.objectContaining({
         method: "POST",
-        headers: { "content-type": "application/json", heygen_route: "canary" },
+        headers: { "content-type": "application/json" },
         body: JSON.stringify({
           rating: 4,
           rating_scale: 10,
diff --git a/packages/cli/src/utils/submitFeedback.ts b/packages/cli/src/utils/submitFeedback.ts
index 219a01574..59d200cd8 100644
--- a/packages/cli/src/utils/submitFeedback.ts
+++ b/packages/cli/src/utils/submitFeedback.ts
@@ -1,6 +1,5 @@
 import { getPublishApiBaseUrl } from "./publishProject.js";
 import { FEEDBACK_RATING_SCALE } from "./feedbackRating.js";
-import { withHeygenCanaryRoute } from "./heygenRoute.js";
 
 // Match the backend DTO caps (HyperframesFeedbackRequest). Truncate here so an
 // over-long field (e.g. a pasted stack trace) is still forwarded truncated,
@@ -31,9 +30,9 @@ export async function submitFeedback(input: {
         cli_version: cap(input.cliVersion, MAX_CLI_VERSION),
         env: cap(input.env, MAX_ENV),
       }),
-      headers: withHeygenCanaryRoute({
+      headers: {
         "content-type": "application/json",
-      }),
+      },
       signal: AbortSignal.timeout(5000),
     });
   } catch {