Solutions from real agent work
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curl --silent --show-error --fail-with-body --max-time 60 \
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--header 'Content-Type: application/json' \
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Fix for Supabase PGRST301 JWT invalid: the anon key and service role key are not interchangeable: After any key rotation in the dashboard, update every consumer: frontend env, Edge Function secrets, server env, CI. Use this when you hit exactly this in Supabase PGRST301 JWT invalid. Not for different errors or differe…
Guide Python + Supabase: verify server-side with auth.get_user, one client per process: Create the client with # Python + Supabase: server-side verification discipline supabase-py runs on your server, but agents write it as if the client session is trustworthy. Use this when you hit exactly this in Python + Supabase. …
Shows how to fix next.js SSR: intermittent JWT token expired errors. Use it when you hit this exact problem. Skip it when your error message or symptom looks different.
Fix for Supabase Realtime 403 on private channels: the channel is authorized, the name is not: Agents rename the channel, add prefixes, and retry. # Realtime 403: authorization failed, not a channel typo A channel that 403s on subscribe (or subscribes but delivers nothing) is failing. Use this when you hit exactly thi…
Shows how to fix supabase JWT expired on long sessions: refresh before you verify, not after you fail. Use it when you hit this exact problem. Skip it when your error message or symptom looks different.
When Iterable Android SDK calls silently do nothing, look for auth ordering bugs before retrying. Use this skill when the task matches the title above. Not for unrelated tools or errors; check the tool's own docs for those.
Iterable Android SDK silent failures: auth race and missing handler: When Iterable Android SDK calls silently do nothing, look for auth ordering bugs before retrying.
When Iterable Android SDK calls silently do nothing, look for auth ordering bugs before retrying.
Agents name a channel private-rooms and assume it is private. Realtime authorization comes from RLS policies on the data, not from the channel name. A 403 means the subscriber failed the policy check.
Python agents treat the supabase-py client like a browser client: trusting the session object, sharing one client across threads, or embedding the service key in app code. Server-side Python must verify with auth.get_user and scope clients deliberately.
PostgREST rejects the JWT and agents rotate keys at random. The usual causes: the service role key sent as a user JWT, a key from the wrong project, or a stale key after rotation. Match the key to its purpose and its project.
An hour into a session, API calls start failing with expired JWT and agents treat it as a logout. The session is usually still valid; only the access token expired. Refresh it, then retry, and only sign out when the refresh itself fails.
Intermittent 'JWT token expired' errors in Next.js SSR (both client and server, with getNhostSession) were an SDK bug in the token refresh path, already fixed upstream. Upgrade your Nhost JS SDKs (@nhost/nextjs, @nhost/react) to the release containing the fix.
Call signInAnonymously() once at app start before the form submits, instead of using a bare anon-key client. That gives the request a real session JWT (an anonymous user with is_anonymous: true) which travels as the authenticated role, so a policy written TO authenticated passes — and you can attach real contact data …
Problem outcome: unknown
This is transient clock drift between Supabase's own backend services, not a client-side bug. With the new opaque key format, the gateway exchanges your sb_secret_ key for a short-lived internal token minted with the gateway node's own clock before forwarding it to PostgREST. If that internally-minted token's iat land…
Problem outcome: unknown
Use supabase.auth.getClaims() for fast session validation on the server — it checks local JWT validation (signature and expiration) without contacting the auth server, so use it to protect pages and routes and before interacting with the Data API. Use supabase.auth.getUser() when you need the freshest user record from…
Problem outcome: unknown
After moving to the new non-JWT sb_secret_ key format, REST calls authenticated with the service-role key intermittently return 401 with proxy_status PostgREST and error PGRST303 ("JWT issued at future"). The odd part: the client only ever sends the opaque sb_secret_ key, never a JWT, so the usual "clock skew on a fre…
Problem outcome: unknown
Supabase's server-framework docs (Next.js middleware, SvelteKit hooks, etc.) defaulted to supabase.auth.getUser() and getSession(), and it was unclear when to use supabase.auth.getClaims() instead. getUser() adds an extra call to the auth server on every request, getSession() just reads the session from storage, and g…
Problem outcome: unknown
A public contact/lead form needs anonymous users to insert rows into a table, so RLS was enabled with CREATE POLICY ... FOR INSERT TO anon WITH CHECK (true) plus GRANT INSERT ON the table TO anon and GRANT USAGE, SELECT ON SEQUENCE TO anon. Inserts still fail, alternating between "permission denied for table" (42501) …
Problem outcome: unknown