diff --git a/INSTALLATION.md b/INSTALLATION.md
index ec91bff1..f0a23418 100644
--- a/INSTALLATION.md
+++ b/INSTALLATION.md
@@ -471,9 +471,9 @@ DASHBOARD_JWT_SECRET=""                # Generate with: openssl rand -hex 32
 # Required whenever the frontend and API are on different origins — including local
 # dev (UI :3000 -> API :2024 is cross-origin). CORS is only enabled when this is set.
 DASHBOARD_ALLOWED_ORIGINS="http://localhost:3000"  # prod: your frontend origin(s)
-# Comma-separated email allowlist for admin dashboard endpoints (matched against the
-# logged-in user's GitHub email). Empty => nobody is an admin.
-CONFIGURED_ADMINS=""                   # e.g. "alice@my-org.com,bob@my-org.com"
+# Comma-separated GitHub login or email allowlist for admin dashboard endpoints.
+# Empty => nobody is an admin.
+CONFIGURED_ADMINS=""                   # e.g. "alice,bob@my-org.com"
 # URL of the LangGraph server the FastAPI side calls to trigger/stream runs.
 # Defaults to http://localhost:2024 locally; set to your deployment URL in prod.
 LANGGRAPH_URL="http://localhost:2024"
@@ -587,7 +587,7 @@ The dashboard needs `VITE_DASHBOARD_API_BASE_URL` in `ui/.env` pointing at the b
 
 The client calls `${VITE_DASHBOARD_API_BASE_URL}/dashboard/api/*` with `credentials: "include"`, so the backend's `osw_session` cookie rides along. Because the UI (`:3000`) and API (`:2024`) are different origins, the backend needs **CORS** enabled for the UI origin — set `DASHBOARD_ALLOWED_ORIGINS="http://localhost:3000"` (CORS is off unless this is set). Keep `DASHBOARD_API_BASE_URL` on an `http://` URL locally so the cookie uses `SameSite=Lax` rather than `Secure`.
 
-For the dashboard login to succeed, you need (from steps 3c / 6): `GITHUB_APP_CLIENT_ID`, `GITHUB_APP_CLIENT_SECRET`, `DASHBOARD_JWT_SECRET`, `DASHBOARD_API_BASE_URL`, `DASHBOARD_BASE_URL`, and `DASHBOARD_ALLOWED_ORIGINS`. To reach the admin pages (user mappings, etc.), add your GitHub email to `CONFIGURED_ADMINS`.
+For the dashboard login to succeed, you need (from steps 3c / 6): `GITHUB_APP_CLIENT_ID`, `GITHUB_APP_CLIENT_SECRET`, `DASHBOARD_JWT_SECRET`, `DASHBOARD_API_BASE_URL`, `DASHBOARD_BASE_URL`, and `DASHBOARD_ALLOWED_ORIGINS`. To reach the admin pages (user mappings, etc.), add your GitHub login or email to `CONFIGURED_ADMINS`.
 
 Other UI scripts: `bun run build`, `bun run typecheck`, `bun run lint`, `bun run test`.
 
@@ -621,7 +621,7 @@ Other UI scripts: `bun run build`, `bun run typecheck`, `bun run lint`, `bun run
 
 1. With the backend (step 7) and UI (step 8) both running, open `http://localhost:3000`
 2. Click **Sign in with GitHub** — you'll be sent through the GitHub OAuth flow and back to the dashboard
-3. You should land logged-in and be able to see your profile/settings. If your email is in `CONFIGURED_ADMINS`, the **Admin** pages (e.g. User mappings) are available.
+3. You should land logged-in and be able to see your profile/settings. If your GitHub login or email is in `CONFIGURED_ADMINS`, the **Admin** pages (e.g. User mappings) are available.
 
 ## 10. Production deployment
 
@@ -674,7 +674,7 @@ Alternatively, you can run the dashboard as a direct cross-origin client: set `V
 - OAuth `redirect_uri` mismatch: the GitHub App must list `<DASHBOARD_API_BASE_URL>/dashboard/api/auth/callback` as a callback URL (step 3b). Locally that's `http://localhost:2024/dashboard/api/auth/callback`.
 - Login redirects but the session doesn't stick: this is almost always a cookie problem. Locally, keep `DASHBOARD_API_BASE_URL` on `http://` (so cookies are `SameSite=Lax`); in prod use `https://` for both API and frontend and add the frontend origin to `DASHBOARD_ALLOWED_ORIGINS`.
 - Login rejected with an org error: `ALLOWED_GITHUB_ORGS` gates dashboard login (and requires the App's Organization → Members: Read-only permission). See step 5.
-- Admin pages 403: add your GitHub email to `CONFIGURED_ADMINS`.
+- Admin pages 403: add your GitHub login or email to `CONFIGURED_ADMINS`.
 
 ### Dashboard UI can't reach the backend
 
diff --git a/agent/dashboard/admin.py b/agent/dashboard/admin.py
index a823ca64..7b224cc2 100644
--- a/agent/dashboard/admin.py
+++ b/agent/dashboard/admin.py
@@ -1,33 +1,37 @@
-"""Admin email gate driven by the CONFIGURED_ADMINS env var."""
+"""Admin gate driven by the CONFIGURED_ADMINS env var."""
 
 from __future__ import annotations
 
 import os
 
 
-def _admin_emails() -> frozenset[str]:
+def _configured_admins() -> frozenset[str]:
     raw = os.environ.get("CONFIGURED_ADMINS", "")
-    return frozenset(e.strip().lower() for e in raw.split(",") if e.strip())
-
-
-def is_admin(email: str | None) -> bool:
-    if not email:
-        return False
-    return email.strip().lower() in _admin_emails()
+    return frozenset(entry.strip().lower() for entry in raw.split(",") if entry.strip())
 
 
 def _observability_emails() -> frozenset[str]:
     raw = os.environ.get("OBSERVABILITY_AUTHORIZED_EMAILS", "")
-    return frozenset(e.strip().lower() for e in raw.split(",") if e.strip())
+    return frozenset(entry.strip().lower() for entry in raw.split(",") if entry.strip())
 
 
-def is_observability_authorized(email: str | None) -> bool:
-    """Whether ``email`` may use the team observability tools.
+def _admin_identities(email: str | None, login: str | None) -> frozenset[str]:
+    return frozenset(
+        value.strip().lower()
+        for value in (email, login)
+        if isinstance(value, str) and value.strip()
+    )
 
-    Admins always qualify; additional non-admin emails can be allow-listed via
-    ``OBSERVABILITY_AUTHORIZED_EMAILS``.
-    """
+
+def is_admin(email: str | None, *, login: str | None = None) -> bool:
+    return bool(_admin_identities(email, login) & _configured_admins())
+
+
+def is_observability_authorized(email: str | None, *, login: str | None = None) -> bool:
+    """Whether a user may use the team observability tools."""
+    identities = _admin_identities(email, login)
+    if identities & _configured_admins():
+        return True
     if not email:
         return False
-    normalized = email.strip().lower()
-    return normalized in _admin_emails() or normalized in _observability_emails()
+    return email.strip().lower() in _observability_emails()
diff --git a/agent/dashboard/routes.py b/agent/dashboard/routes.py
index 1ee9366f..f022017a 100644
--- a/agent/dashboard/routes.py
+++ b/agent/dashboard/routes.py
@@ -166,8 +166,12 @@ _GITHUB_API_TIMEOUT = httpx.Timeout(10.0, connect=3.0)
 _SKIPPABLE_INSTALLATION_REPO_STATUS_CODES = frozenset({403, 404})
 
 
+def _session_is_admin(session: dict[str, Any]) -> bool:
+    return is_admin(session.get("email"), login=session.get("sub"))
+
+
 def _require_admin(session: dict[str, Any]) -> dict[str, Any]:
-    if not is_admin(session.get("email")):
+    if not _session_is_admin(session):
         raise HTTPException(403, "admin only")
     return session
 
@@ -362,7 +366,7 @@ async def me(session: dict[str, Any] = _SESSION_DEP) -> dict[str, Any]:
         "login": session["sub"],
         "email": session.get("email"),
         "avatar_url": session.get("avatar_url"),
-        "is_admin": is_admin(session.get("email")),
+        "is_admin": _session_is_admin(session),
         "slack_oauth_enabled": slack_oauth_configured(),
     }
 
@@ -1179,7 +1183,7 @@ async def api_list_threads(
     all: bool = False,
     session: dict[str, Any] = _SESSION_DEP,
 ) -> list[dict[str, Any]]:
-    if all and not is_admin(session.get("email")):
+    if all and not _session_is_admin(session):
         raise HTTPException(403, "admin only")
     return await list_dashboard_threads(session["sub"], email=session.get("email"), include_all=all)
 
@@ -1191,7 +1195,7 @@ async def api_list_threads_sidebar(
     all: bool = False,
     session: dict[str, Any] = _SESSION_DEP,
 ) -> dict[str, Any]:
-    if all and not is_admin(session.get("email")):
+    if all and not _session_is_admin(session):
         raise HTTPException(403, "admin only")
     return await list_dashboard_threads_sidebar(
         session["sub"],
@@ -1214,7 +1218,7 @@ async def api_list_threads_page(
     q: str | None = None,
     session: dict[str, Any] = _SESSION_DEP,
 ) -> dict[str, Any]:
-    if all and not is_admin(session.get("email")):
+    if all and not _session_is_admin(session):
         raise HTTPException(403, "admin only")
     return await list_dashboard_threads_page(
         session["sub"],
diff --git a/agent/server.py b/agent/server.py
index 4840c136..f52deebe 100644
--- a/agent/server.py
+++ b/agent/server.py
@@ -501,13 +501,17 @@ async def _observability_authorized(config: RunnableConfig, profile_login: str |
     """
     configurable = (config or {}).get("configurable") or {}
     slack_thread = configurable.get("slack_thread") or {}
+    config_login = configurable.get("github_login")
+    candidate_login = profile_login or (config_login if isinstance(config_login, str) else None)
     candidate_emails = [
         configurable.get("user_email"),
         slack_thread.get("triggering_user_email"),
     ]
-    if any(is_observability_authorized(email) for email in candidate_emails):
+    if any(is_observability_authorized(email, login=candidate_login) for email in candidate_emails):
         return True
-    return is_observability_authorized(await email_for_login(profile_login))
+    return is_observability_authorized(
+        await email_for_login(candidate_login), login=candidate_login
+    )
 
 
 async def _load_observability_tools(authorized: bool) -> list[Any]:
diff --git a/tests/test_dashboard_admin.py b/tests/test_dashboard_admin.py
new file mode 100644
index 00000000..b5338574
--- /dev/null
+++ b/tests/test_dashboard_admin.py
@@ -0,0 +1,39 @@
+from __future__ import annotations
+
+import pytest
+
+from agent.dashboard.admin import is_admin, is_observability_authorized
+
+
+def test_is_admin_accepts_email_or_github_login(monkeypatch: pytest.MonkeyPatch) -> None:
+    monkeypatch.setenv("CONFIGURED_ADMINS", "Alice, bob@langchain.dev")
+
+    assert is_admin("bob@langchain.dev", login="not-bob") is True
+    assert is_admin("other@langchain.dev", login="alice") is True
+    assert is_admin("other@langchain.dev", login="ALICE") is True
+    assert is_admin("other@langchain.dev", login="mallory") is False
+
+
+def test_is_admin_rejects_blank_identities(monkeypatch: pytest.MonkeyPatch) -> None:
+    monkeypatch.setenv("CONFIGURED_ADMINS", "alice")
+
+    assert is_admin(None, login=None) is False
+    assert is_admin("", login=" ") is False
+
+
+def test_observability_authorized_treats_admin_login_as_admin(
+    monkeypatch: pytest.MonkeyPatch,
+) -> None:
+    monkeypatch.setenv("CONFIGURED_ADMINS", "alice")
+    monkeypatch.delenv("OBSERVABILITY_AUTHORIZED_EMAILS", raising=False)
+
+    assert is_observability_authorized(None, login="alice") is True
+    assert is_observability_authorized("other@langchain.dev", login="mallory") is False
+
+
+def test_observability_allowlist_still_uses_email(monkeypatch: pytest.MonkeyPatch) -> None:
+    monkeypatch.setenv("CONFIGURED_ADMINS", "")
+    monkeypatch.setenv("OBSERVABILITY_AUTHORIZED_EMAILS", "trusted@langchain.dev")
+
+    assert is_observability_authorized("trusted@langchain.dev", login="mallory") is True
+    assert is_observability_authorized("other@langchain.dev", login="trusted") is False
diff --git a/tests/test_observability_tools.py b/tests/test_observability_tools.py
index 548abcd7..e0f724e2 100644
--- a/tests/test_observability_tools.py
+++ b/tests/test_observability_tools.py
@@ -154,3 +154,15 @@ async def test_observability_authorized_resolves_login_email(
 
     config = {"configurable": {"github_login": "dev"}}
     assert await server._observability_authorized(config, "dev") is True
+
+
+@pytest.mark.asyncio
+async def test_observability_authorized_accepts_admin_login(
+    monkeypatch: pytest.MonkeyPatch,
+) -> None:
+    monkeypatch.setenv("CONFIGURED_ADMINS", "dev")
+    monkeypatch.delenv("OBSERVABILITY_AUTHORIZED_EMAILS", raising=False)
+    monkeypatch.setattr(server, "email_for_login", AsyncMock(return_value=None))
+
+    config = {"configurable": {"github_login": "dev"}}
+    assert await server._observability_authorized(config, "dev") is True