Gate on live OC membership list (authoritative) instead of fragile webhook pending table

app/main.py

@@ -55,6 +55,7 @@ OC_OAUTH_REDIRECT_URI = os.environ.get(
 OC_AUTHORIZE_URL = "https://opencollective.com/oauth/authorize"
 OC_TOKEN_URL = "https://opencollective.com/oauth/token"
 OC_GRAPHQL_URL = "https://opencollective.com/api/graphql/v2"
+OC_COLLECTIVE_SLUG = os.environ.get("OC_COLLECTIVE_SLUG", "inference-cooperative")
 
 # Monthly credit budget (in USD of tokens) for all members.
 # Single sliding-scale tier: everyone gets the same $15/month in credits,
@@ -134,6 +135,31 @@ def is_pending_member(slug: str) -> bool:
     return row is not None
 
 
+async def is_active_member(slug: str) -> bool:
+    """Check the LIVE Open Collective membership list (authoritative source of
+    truth) for whether this slug is a financial contributor (BACKER/ADMIN),
+    not just the fiscal host. More reliable than the webhook, which only fires
+    on new events and can miss existing members."""
+    if not slug:
+        return False
+    query = (
+        '{ collective(slug: "%s") { members(limit: 100) { nodes { role account { slug } } } } }'
+        % OC_COLLECTIVE_SLUG
+    )
+    async with httpx.AsyncClient() as client:
+        r = await client.post(OC_GRAPHQL_URL, json={"query": query})
+        if r.status_code != 200:
+            logger.warning("OC membership check failed: %s", r.status_code)
+            return False
+        nodes = r.json().get("data", {}).get("collective", {}).get("members", {}).get("nodes", [])
+    for n in nodes:
+        role = n.get("role", "")
+        acct = n.get("account", {}) or {}
+        if acct.get("slug") == slug and role in ("BACKER", "ADMIN"):
+            return True
+    return False
+
+
 def store_member(email: str, key_token: str, cloudron_user_id: str, slug: str = "") -> None:
     conn = get_db()
     conn.execute(
@@ -530,10 +556,11 @@ async def oauth_callback(request: Request):
     if not email:
         raise HTTPException(400, "No email returned — did you grant the email scope?")
 
-    # Gate: only provision if this person actually contributed (the webhook
+    # Gate: only provision if this person is an active financial contributor.
-    # stored them as a pending member). Prevents free memberships via /join.
+    # We check the LIVE Open Collective membership list (authoritative), not
-    if not is_pending_member(slug):
+    # the webhook's pending table (which only fires on new events).
-        logger.warning("Rejected non-member %s (slug=%s not in pending list)", email, slug)
+    if not await is_active_member(slug):
+        logger.warning("Rejected non-member %s (slug=%s not an active contributor)", email, slug)
         html = """<!DOCTYPE html>
 <html lang="en">
 <head><meta charset="UTF-8"><meta name="viewport" content="width=device-width, initial-scale=1.0">