diff --git a/.changeset/sdk-authorization-header.md b/.changeset/sdk-authorization-header.md
new file mode 100644
index 0000000000..f17f7f3d35
--- /dev/null
+++ b/.changeset/sdk-authorization-header.md
@@ -0,0 +1,16 @@
+---
+'e2b': minor
+'@e2b/python-sdk': minor
+---
+
+The API client accepts an `Authorization` header in place of an API key. Requests can now authenticate with an OAuth access token passed through `apiHeaders` (JS) or `api_headers` (Python), together with the `X-Team-ID` header that selects the team:
+
+```ts
+await Sandbox.create({
+  apiHeaders: { Authorization: `Bearer ${accessToken}`, 'X-Team-ID': teamId },
+})
+```
+
+```python
+Sandbox.create(api_headers={"Authorization": f"Bearer {access_token}", "X-Team-ID": team_id})
+```
diff --git a/packages/js-sdk/src/api/index.ts b/packages/js-sdk/src/api/index.ts
index 9264bfe001..96481181fb 100644
--- a/packages/js-sdk/src/api/index.ts
+++ b/packages/js-sdk/src/api/index.ts
@@ -103,7 +103,12 @@ class ApiClient {
       requireApiKey?: boolean
     } = {}
   ) {
-    if ((opts.requireApiKey ?? true) && !config.apiKey) {
+    // An `Authorization` header (e.g. an OAuth access token passed through
+    // `apiHeaders`) authenticates the request in place of an API key.
+    const hasAuthorization = Object.keys(config.headers ?? {}).some(
+      (name) => name.toLowerCase() === 'authorization'
+    )
+    if ((opts.requireApiKey ?? true) && !config.apiKey && !hasAuthorization) {
       throw new AuthenticationError(
         'API key is required, please visit the API Keys tab at https://e2b.dev/dashboard?tab=keys to get your API key. ' +
           'You can either set the environment variable `E2B_API_KEY` ' +
diff --git a/packages/js-sdk/tests/api/apiKey.test.ts b/packages/js-sdk/tests/api/apiKey.test.ts
index 6adfcc782c..93688e411d 100644
--- a/packages/js-sdk/tests/api/apiKey.test.ts
+++ b/packages/js-sdk/tests/api/apiKey.test.ts
@@ -23,4 +23,28 @@ describe('ApiClient API key requirement', () => {
     const config = new ConnectionConfig({})
     assert.doesNotThrow(() => new ApiClient(config, { requireApiKey: false }))
   })
+
+  test.each(['Authorization', 'authorization'])(
+    'accepts an %s header in place of an API key',
+    async (header) => {
+      vi.stubEnv('E2B_API_KEY', '')
+      const seen: Headers[] = []
+      const config = new ConnectionConfig({
+        apiHeaders: { [header]: 'Bearer access-token', 'X-Team-ID': 'team' },
+      })
+      const client = new ApiClient(config)
+      await client.api.GET('/teams', {
+        fetch: async (request: Request) => {
+          seen.push(request.headers)
+          return new Response('[]', {
+            headers: { 'Content-Type': 'application/json' },
+          })
+        },
+      })
+
+      assert.equal(seen[0].get('Authorization'), 'Bearer access-token')
+      assert.equal(seen[0].get('X-Team-ID'), 'team')
+      assert.isNull(seen[0].get('X-API-KEY'))
+    }
+  )
 })
diff --git a/packages/python-sdk/e2b/api/__init__.py b/packages/python-sdk/e2b/api/__init__.py
index 332d237284..52c5099a6b 100644
--- a/packages/python-sdk/e2b/api/__init__.py
+++ b/packages/python-sdk/e2b/api/__init__.py
@@ -246,15 +246,31 @@ def __init__(
     ):
         self._proxy = config.proxy
 
-        if config.api_key is None:
+        # An `Authorization` header (e.g. an OAuth access token passed through
+        # `api_headers`) authenticates the request in place of an API key.
+        authorization = next(
+            (
+                (name, value)
+                for name, value in (config.headers or {}).items()
+                if name.lower() == "authorization"
+            ),
+            None,
+        )
+
+        # Like the JS SDK, an empty E2B_API_KEY counts as unset.
+        if config.api_key:
+            token = config.api_key
+            auth_header_name = "X-API-KEY"
+        elif authorization is not None:
+            # The generated client always writes `token` to `auth_header_name`;
+            # point it at the caller's own header so it isn't sent twice.
+            auth_header_name, token = authorization
+        else:
             raise AuthenticationException(
                 "API key is required, please visit the API Keys tab at https://e2b.dev/dashboard?tab=keys to get your API key. "
                 "You can either set the environment variable `E2B_API_KEY` "
                 'or you can pass it directly to the method like api_key="e2b_..."',
             )
-
-        token = config.api_key
-        auth_header_name = "X-API-KEY"
         prefix = ""
 
         self._logger = config.logger
diff --git a/packages/python-sdk/tests/test_api_key.py b/packages/python-sdk/tests/test_api_key.py
index d5169bef54..ff190459c9 100644
--- a/packages/python-sdk/tests/test_api_key.py
+++ b/packages/python-sdk/tests/test_api_key.py
@@ -10,3 +10,32 @@ def test_api_client_requires_api_key(monkeypatch):
     config = ConnectionConfig()
     with pytest.raises(AuthenticationException, match=r"API key is required"):
         ApiClient(config)
+
+
+@pytest.mark.parametrize("header", ["Authorization", "authorization"])
+@pytest.mark.parametrize("env_api_key", [None, ""])
+def test_api_client_accepts_authorization_header(monkeypatch, header, env_api_key):
+    if env_api_key is None:
+        monkeypatch.delenv("E2B_API_KEY", raising=False)
+    else:
+        monkeypatch.setenv("E2B_API_KEY", env_api_key)
+    config = ConnectionConfig(
+        api_headers={header: "Bearer access-token", "X-Team-ID": "team"}
+    )
+
+    client = ApiClient(config)
+    headers = client.get_httpx_client().headers
+
+    assert headers.get_list("Authorization") == ["Bearer access-token"]
+    assert headers["X-Team-ID"] == "team"
+    assert "X-API-KEY" not in headers
+
+
+def test_api_client_prefers_api_key(monkeypatch):
+    monkeypatch.delenv("E2B_API_KEY", raising=False)
+    config = ConnectionConfig(api_key="e2b_key")
+
+    headers = ApiClient(config).get_httpx_client().headers
+
+    assert headers["X-API-KEY"] == "e2b_key"
+    assert "Authorization" not in headers