diff --git a/dankclaw/observability/quadlet/grafana.container b/dankclaw/observability/quadlet/grafana.container
index a790d89..8eefb6f 100644
--- a/dankclaw/observability/quadlet/grafana.container
+++ b/dankclaw/observability/quadlet/grafana.container
@@ -47,9 +47,23 @@ Environment=GF_AUTH_GENERIC_OAUTH_CLIENT_SECRET=${GRAFANA_OAUTH_CLIENT_SECRET}
 # client_id query parameter — /application/o/<slug>/authorize/ does not exist.
 Environment=GF_AUTH_GENERIC_OAUTH_AUTH_URL=https://auth.franksdank.cloud/application/o/authorize/
 Environment=GF_AUTH_GENERIC_OAUTH_TOKEN_URL=https://auth.franksdank.cloud/application/o/token/
-# ?api=1 = introspection-style userinfo: returns custom claims (groups) too.
-Environment=GF_AUTH_GENERIC_OAUTH_API_URL=https://auth.franksdank.cloud/application/o/userinfo/?api=1
-Environment=GF_AUTH_GENERIC_OAUTH_ALLOW_SIGN_UP=false
+# Read claims from the signed ID token. Grafana v13 always appends /emails to
+# API_URL and GETs it as a userinfo endpoint (authentik has no such path and
+# 404s it, failing the login). USE_ID_TOKEN makes Grafana take sub/email/name
+# from the id_token, which authentik fills from the openid/email/profile scopes.
+Environment=GF_AUTH_GENERIC_OAUTH_USE_ID_TOKEN=true
+Environment=GF_AUTH_GENERIC_OAUTH_API_URL=https://auth.franksdank.cloud/application/o/userinfo/
+# authentik's scopes are openid/email/profile. `user:email` (a GitLab-ism) is
+# not a known scope here; requesting it makes the authorize view crash.
+# Quoted: quadlet word-splits Environment=, so an unquoted spaced list
+# truncates SCOPES to its first token.
+Environment="GF_AUTH_GENERIC_OAUTH_SCOPES=openid email profile"
+Environment=GF_AUTH_GENERIC_OAUTH_EMAIL_ATTRIBUTE_PATH=email
+Environment=GF_AUTH_GENERIC_OAUTH_LOGIN_ATTRIBUTE_PATH=sub
+Environment=GF_AUTH_GENERIC_OAUTH_NAME_ATTRIBUTE_PATH=preferred_username
+# First SSO login auto-provisions the user. Safe: unauthenticated traffic never
+# reaches this callback — the Anubis -> Authentik guard fronts every request.
+Environment=GF_AUTH_GENERIC_OAUTH_ALLOW_SIGN_UP=true
 Environment=GF_AUTH_GENERIC_OAUTH_AUTO_UPSERT=true
 Environment=GF_AUTH_GENERIC_OAUTH_ALLOW_ASSIGN_ORG=true
 Environment=GF_AUTH_GENERIC_OAUTH_ORG_ID=1
diff --git a/scripts/authentik-grafana-sso-fix.sh b/scripts/authentik-grafana-sso-fix.sh
new file mode 100755
index 0000000..19077c7
--- /dev/null
+++ b/scripts/authentik-grafana-sso-fix.sh
@@ -0,0 +1,81 @@
+#!/usr/bin/env bash
+# Repair the Grafana OAuth2 relying-party SSO on Dankclaw's authentik.
+#
+# grafana.franksdank.cloud logs in through authentik as an OAuth2 relying party.
+# Two DB-side facts (the provider was created by hand via `ak shell`, never
+# repo-managed) silently broke that login, and BOTH had previously been
+# mis-recorded here as a single "the property-mapping evaluator is broken, so
+# userinfo returns only `sub`" myth. They are neither, and the evaluator is fine:
+#
+#   1. provider.authorization_flow was NULL. The authorize view builds a flow
+#      planner from it and crashes with
+#      `AttributeError: 'NoneType' object has no attribute 'slug'` — an HTTP 500
+#      "Server Error — Powered by authentik", before any claim is touched.
+#      Fix: point it at default-provider-authorization-implicit-consent, the
+#      flow every other provider in this instance already uses.
+#   2. The `grafana-email-scope` ScopeMapping's expression was the bare string
+#      `user.email`. authentik merges a scope mapping's result into the token as
+#      a MAPPING: a returned dict adds its keys as claims; a returned string is
+#      keyed under the mapping's NAME ("grafana-email-scope"), so no `email`
+#      claim is ever emitted. Grafana, finding no email, falls back to
+#      GET <api_url>/emails, authentik 404s that path, and the login dies with
+#      "Login failed: InternalError". Fix: return
+#      {"email": user.email, "email_verified": True} — the shape the stock
+#      OpenID 'email' mapping uses. The dict-valued `grafana-profile-scope`
+#      mapping has always worked, which is the proof the evaluator is fine.
+#
+# This is authentik DB state. It is NOT in any deployable file: a blueprint
+# re-import, or an ak-shell re-creation of the grafana provider, reverts BOTH
+# facts and the symptom returns verbatim. Re-run this after any such rebuild.
+# Every step is idempotent.
+#
+# Grafana's own half — SCOPES="openid email profile", USE_ID_TOKEN=true, no
+# `?api=1` on the API URL, ALLOW_SIGN_UP=true — lives in
+# dankclaw/observability/quadlet/grafana.container and deploys normally.
+#
+# Usage: authentik-grafana-sso-fix.sh          (override host: AUTHENTIK_HOST=…)
+set -euo pipefail
+HOST="${AUTHENTIK_HOST:-dankclaw}"
+
+ssh "$HOST" 'podman exec -i authentik-server ak shell' <<'PYEOF'
+from authentik.flows.models import Flow
+from authentik.providers.oauth2.models import OAuth2Provider
+
+p = OAuth2Provider.objects.filter(name="grafana").first()
+if not p:
+    raise SystemExit("no OAuth2Provider named 'grafana'")
+
+# 1. The authorization flow every other provider uses.
+want = Flow.objects.filter(slug="default-provider-authorization-implicit-consent").first()
+if not want:
+    raise SystemExit("default-provider-authorization-implicit-consent flow is missing")
+if p.authorization_flow_id != want.pk:
+    p.authorization_flow = want
+    p.save()
+    print(f"set grafana.authorization_flow -> {want.slug}")
+else:
+    print(f"grafana.authorization_flow already {want.slug}")
+
+# 2. The email scope mapping must RETURN A DICT, not a bare string.
+m = p.property_mappings.filter(name="grafana-email-scope").first()
+if not m:
+    raise SystemExit("grafana-email-scope mapping is missing")
+fixed = 'return {"email": user.email, "email_verified": True}'
+if m.expression.strip() != fixed:
+    m.expression = fixed
+    m.save()
+    print("repaired grafana-email-scope -> returns {email, email_verified}")
+else:
+    print("grafana-email-scope expression already correct")
+
+# 3. The id_token must carry the scope claims; Grafana reads identity from it.
+if not p.include_claims_in_id_token:
+    p.include_claims_in_id_token = True
+    p.save()
+    print("enabled include_claims_in_id_token")
+else:
+    print("include_claims_in_id_token already on")
+PYEOF
+
+echo "Done. Verify: sign in at https://grafana.franksdank.cloud via Authentik;"
+echo "the round trip must land on / and /api/user must answer 200 with an email."