feat(trust): let the viewer choose the trust provider (NIP-85 kind 10040)

Settings -> Trust is now functional, not read-only. useSetTrustProvider
publishes a kind-10040 designation for a custom provider (npub or 64-hex +
wss relay, the five 30382:<type> rows) and can clear it to fall back to the
community provider. The card validates input, prompts the signer, and
invalidates the provider + assertion queries so scores refresh. Docs
updated.

AGENTS.md

@@ -2550,9 +2550,11 @@ pass:** the badge tooltip attributes the source (your network / community
 provider / your provider) and links to a public **`/trust`** explainer;
 **Settings → Trust** (`?section=trust`, `components/TrustSettingsCard.tsx`) has a
 show/hide-marks toggle (`useTrustDisplay`, Flagged is never hidden) and shows the
-active provider + relay (`useTrustProvider`). Still open: provider choice
+active provider + relay (`useTrustProvider`), and lets the viewer **publish a
-(publishing a kind-10040 designation), a mute action (no NIP-51 kind-10000 hook
+kind-10040 provider designation** (`useSetTrustProvider`: custom npub/hex +
-exists yet), counterparty alerts, and the confidence-gated scoring model. Check
+`wss://` relay, or clear to fall back to the community provider). Still open: a
+mute action (no NIP-51 kind-10000 hook exists yet), counterparty alerts, and the
+confidence-gated scoring model. Check
 `TRUST_SCORE.md` before touching `useTrustScore` / `useRelatrScore` /
 `trustFilter`.
 

TRUST_SCORE.md

@@ -21,10 +21,8 @@ marketplace, and moderation.
   ListingDetailPage and CoachDetailPage, the mapping, Lab and marketplace all get
   it for free.
 
-Still open from this slice: precompute the bucket at list level and pass it down
+All three follow-ups landed in the later passes below: the batched read, the
-(one provider query per list instead of per card); a "who reported" breakdown
+flagged notice's reporter breakdown, and Settings → Trust.
-(the assertion carries counts, not identities); and a Settings control to pick
-the provider instead of only using the designation or house default.
 
 ## Second pass (landed)
 
@@ -53,13 +51,16 @@ the provider instead of only using the designation or house default.
   point-of-view relativity. Added to the smoke-test route list.
 - **Settings → Trust** (`?section=trust`, `components/TrustSettingsCard.tsx`): a
   show/hide-marks toggle (`useTrustDisplay`, localStorage
-  `skatespots:trust:display`; **Flagged is never hidden**) and the active
+  `skatespots:trust:display`; **Flagged is never hidden**), the active provider +
-  provider + relay (`useTrustProvider`), with a link to `/trust`.
+  relay (`useTrustProvider`), and **provider choice**: `useSetTrustProvider`
+  publishes a NIP-85 **kind-10040** designation (custom npub/hex + `wss://`
+  relay, all five `30382:<type>` rows) or clears it to fall back to the
+  community provider — a signed action, so it prompts the signer. Link to
+  `/trust`.
 
-Still open: provider *choice* (publishing a kind-10040 designation, i.e. an
+Still open: a mute action (there is no NIP-51 kind-10000 hook yet — Dismiss is
-in-app NIP-85 activation flow), a mute action (there is no NIP-51 kind-10000 hook
+the local equivalent for now), counterparty alerts, and the confidence-gated
-yet — Dismiss is the local equivalent for now), counterparty alerts, and the
+scoring model.
-confidence-gated scoring model.
 
 
 

src/components/TrustSettingsCard.tsx

@@ -1,25 +1,60 @@
+import { useState } from 'react';
 import { Link } from 'react-router-dom';
+import { Loader2 } from 'lucide-react';
+
+import { Button } from '@/components/ui/button';
+import { Input } from '@/components/ui/input';
 import { Switch } from '@/components/ui/switch';
 import { useTranslation } from '@/contexts/language';
 import { useCurrentUser } from '@/hooks/useCurrentUser';
 import { useTrustDisplay } from '@/hooks/useTrustDisplay';
 import { useTrustProvider } from '@/hooks/useTrustProvider';
+import {
+  normalizeProviderPubkey,
+  normalizeProviderRelay,
+  useSetTrustProvider,
+} from '@/hooks/useSetTrustProvider';
 import { HOUSE_TRUST_PROVIDER } from '@/lib/nip85';
 
 /**
- * Settings → Trust. How trust is displayed, and which provider is in effect.
+ * Settings → Trust: how trust is displayed, and which provider is in effect.
- * Flagged always shows, so turning marks off is a display choice, not a way to
+ * Flagged always shows, so hiding marks is a display choice, not a way to
- * silence a safety signal.
+ * silence a safety signal. Choosing a provider publishes a NIP-85 kind-10040
+ * designation signed by the user.
  */
 export function TrustSettingsCard() {
   const { t } = useTranslation();
   const { user } = useCurrentUser();
   const { enabled, setEnabled } = useTrustDisplay();
   const { data: provider } = useTrustProvider();
+  const setProvider = useSetTrustProvider();
+
+  const [formOpen, setFormOpen] = useState(false);
+  const [pubkeyInput, setPubkeyInput] = useState('');
+  const [relayInput, setRelayInput] = useState('');
+  const [error, setError] = useState<string | null>(null);
 
   const isHouse = !provider || provider.pubkey === HOUSE_TRUST_PROVIDER.pubkey;
   const source = isHouse ? t('trustUi.sourceHouse') : t('trustUi.sourceCustom');
 
+  const handleSave = async () => {
+    const hex = normalizeProviderPubkey(pubkeyInput);
+    const relay = normalizeProviderRelay(relayInput);
+    if (!hex || !relay) {
+      setError(t('trustUi.invalidProvider'));
+      return;
+    }
+    setError(null);
+    try {
+      await setProvider.mutateAsync({ pubkey: hex, relay });
+      setFormOpen(false);
+      setPubkeyInput('');
+      setRelayInput('');
+    } catch {
+      /* the hook surfaces the error toast */
+    }
+  };
+
   return (
     <div className="space-y-4">
       <div className="rounded-2xl border border-white/10 bg-white/3 p-4">
@@ -32,13 +67,88 @@ export function TrustSettingsCard() {
         </div>
       </div>
 
-      <div className="space-y-2 rounded-2xl border border-white/10 bg-white/3 p-4">
+      <div className="space-y-3 rounded-2xl border border-white/10 bg-white/3 p-4">
-        <p className="text-sm font-bold text-white">{t('trustUi.sourceLabel')}</p>
+        <div>
+          <p className="text-sm font-bold text-white">{t('trustUi.providerTitle')}</p>
+          <p className="mt-1 text-xs text-muted-foreground">{t('trustUi.providerDesc')}</p>
+        </div>
+
+        <div className="space-y-1">
           <p className="text-xs text-muted-foreground">{source}</p>
           {user && provider?.relay && (
             <p className="break-all text-xs text-muted-foreground">{provider.relay}</p>
           )}
-        {!user && <p className="text-xs text-muted-foreground">{t('trustUi.loggedOut')}</p>}
+        </div>
+
+        {!user && <p className="text-xs text-muted-foreground">{t('trustUi.loggedOutProvider')}</p>}
+
+        {user && (
+          <div className="flex flex-wrap gap-2">
+            {!isHouse && (
+              <Button
+                size="sm"
+                variant="outline"
+                className="min-h-0 h-8"
+                disabled={setProvider.isPending}
+                onClick={() => setProvider.mutate(null)}
+              >
+                {t('trustUi.useCommunity')}
+              </Button>
+            )}
+            <Button
+              size="sm"
+              variant="outline"
+              className="min-h-0 h-8"
+              onClick={() => {
+                setFormOpen((open) => !open);
+                setError(null);
+              }}
+            >
+              {t('trustUi.setProvider')}
+            </Button>
+          </div>
+        )}
+
+        {formOpen && user && (
+          <div className="space-y-2">
+            <Input
+              value={pubkeyInput}
+              onChange={(e) => setPubkeyInput(e.target.value)}
+              placeholder={t('trustUi.customPubkeyPlaceholder')}
+              className="h-9 text-sm"
+            />
+            <Input
+              value={relayInput}
+              onChange={(e) => setRelayInput(e.target.value)}
+              placeholder={t('trustUi.customRelayPlaceholder')}
+              className="h-9 text-sm"
+            />
+            {error && <p className="text-xs text-red-400">{error}</p>}
+            <div className="flex gap-2">
+              <Button
+                size="sm"
+                className="min-h-0 h-8 gap-1.5 bg-[#ccff00] text-black hover:bg-[#ccff00]/90"
+                disabled={setProvider.isPending}
+                onClick={handleSave}
+              >
+                {setProvider.isPending && <Loader2 className="h-3.5 w-3.5 animate-spin" />}
+                {t('common.save')}
+              </Button>
+              <Button
+                size="sm"
+                variant="ghost"
+                className="min-h-0 h-8"
+                onClick={() => {
+                  setFormOpen(false);
+                  setError(null);
+                }}
+              >
+                {t('common.cancel')}
+              </Button>
+            </div>
+          </div>
+        )}
+
         <Link to="/trust" className="inline-block text-xs text-[#ccff00] underline">
           {t('walletUi.trust.howItWorks')}
         </Link>

src/hooks/useSetTrustProvider.ts

@@ -0,0 +1,74 @@
+import { useMutation, useQueryClient } from '@tanstack/react-query';
+import { nip19 } from 'nostr-tools';
+
+import { useNostrPublish } from '@/hooks/useNostrPublish';
+import { useCurrentUser } from '@/hooks/useCurrentUser';
+import { useToast } from '@/hooks/useToast';
+import { useTranslation } from '@/contexts/language';
+import { NIP85_PROVIDER_LIST_KIND, NIP85_USER_ASSERTION_KIND, type TrustProvider } from '@/lib/nip85';
+
+/** The assertion types we designate (the normative kind-30382 set). */
+const ASSERTION_TYPES = ['rank', 'followers', 'reporters', 'muters', 'hops'] as const;
+
+/** Accept an npub or a 64-char hex pubkey; return hex or null. */
+export function normalizeProviderPubkey(input: string): string | null {
+  const value = input.trim();
+  if (/^[0-9a-f]{64}$/i.test(value)) return value.toLowerCase();
+  if (value.startsWith('npub1')) {
+    try {
+      const decoded = nip19.decode(value);
+      if (decoded.type === 'npub') return decoded.data;
+    } catch {
+      return null;
+    }
+  }
+  return null;
+}
+
+/** A relay hint must be a websocket URL. */
+export function normalizeProviderRelay(input: string): string | null {
+  const value = input.trim();
+  if (/^wss?:\/\/.+/i.test(value)) return value;
+  return null;
+}
+
+/**
+ * Publish (or clear) the viewer's NIP-85 kind-10040 provider designation.
+ * Passing `null` clears it, so the app falls back to the community provider.
+ * This is a signed action, so it prompts the signer like any other publish.
+ */
+export function useSetTrustProvider() {
+  const { mutateAsync: publish } = useNostrPublish();
+  const { user } = useCurrentUser();
+  const { toast } = useToast();
+  const { t } = useTranslation();
+  const queryClient = useQueryClient();
+
+  const mutation = useMutation({
+    mutationFn: async (provider: TrustProvider | null) => {
+      if (!user) throw new Error(t('trustUi.loggedOutProvider'));
+
+      const relay = provider?.relay;
+      const tags: string[][] =
+        provider && relay
+          ? ASSERTION_TYPES.map((type) => [`${NIP85_USER_ASSERTION_KIND}:${type}`, provider.pubkey, relay])
+          : [];
+
+      await publish({ kind: NIP85_PROVIDER_LIST_KIND, content: '', tags });
+    },
+    onSuccess: () => {
+      queryClient.invalidateQueries({ queryKey: ['trust-provider', user?.pubkey] });
+      queryClient.invalidateQueries({ queryKey: ['trust-assertions-batch', user?.pubkey ?? ''] });
+      toast({ title: t('trustUi.providerSaved') });
+    },
+    onError: (error) => {
+      toast({
+        title: t('trustUi.publishFailed'),
+        description: error instanceof Error ? error.message : undefined,
+        variant: 'destructive',
+      });
+    },
+  });
+
+  return mutation;
+}

src/i18n/en.ts

@@ -7389,6 +7389,16 @@ walletUi: {
     sellerHint: 'This seller’s venue issues access passes',
   },
   trustUi: {
+    providerTitle: 'Provider',
+    providerDesc: 'Scores come from a provider you choose. The community provider is the default.',
+    useCommunity: 'Use community provider',
+    setProvider: 'Set a provider',
+    customPubkeyPlaceholder: 'Provider npub or hex pubkey',
+    customRelayPlaceholder: 'wss://relay.example.com',
+    invalidProvider: 'Enter a valid npub or 64-character hex pubkey, and a wss:// relay.',
+    publishFailed: 'Could not publish the provider. Try again.',
+    providerSaved: 'Provider updated.',
+    loggedOutProvider: 'Log in to choose a provider.',
     showMarks: 'Show trust marks',
     showMarksDesc: 'Verified and unknown marks. Reports always show.',
     sourceLabel: 'Source',

src/i18n/es.ts

@@ -7389,6 +7389,16 @@ walletUi: {
     sellerHint: 'El local de este vendedor emite pases de acceso',
   },
   trustUi: {
+    providerTitle: 'Proveedor',
+    providerDesc: 'Las puntuaciones vienen de un proveedor que elijas. El proveedor de la comunidad es el predeterminado.',
+    useCommunity: 'Usar proveedor de la comunidad',
+    setProvider: 'Elegir un proveedor',
+    customPubkeyPlaceholder: 'npub o clave hex del proveedor',
+    customRelayPlaceholder: 'wss://relay.ejemplo.com',
+    invalidProvider: 'Introduce una npub o clave hex de 64 caracteres, y un relay wss://.',
+    publishFailed: 'No se pudo publicar el proveedor. Intentalo de nuevo.',
+    providerSaved: 'Proveedor actualizado.',
+    loggedOutProvider: 'Inicia sesion para elegir un proveedor.',
     showMarks: 'Mostrar marcas de confianza',
     showMarksDesc: 'Marcas de verificado y desconocido. Los reportes siempre se muestran.',
     sourceLabel: 'Fuente',