diff --git a/quartz/src/commonMain/kotlin/com/vitorpamplona/quartz/experimental/audio/header/AudioHeaderEvent.kt b/quartz/src/commonMain/kotlin/com/vitorpamplona/quartz/experimental/audio/header/AudioHeaderEvent.kt
index 46d1199305..acc168f39d 100644
--- a/quartz/src/commonMain/kotlin/com/vitorpamplona/quartz/experimental/audio/header/AudioHeaderEvent.kt
+++ b/quartz/src/commonMain/kotlin/com/vitorpamplona/quartz/experimental/audio/header/AudioHeaderEvent.kt
@@ -29,6 +29,7 @@ import com.vitorpamplona.quartz.nip01Core.core.HexKey
 import com.vitorpamplona.quartz.nip01Core.core.TagArrayBuilder
 import com.vitorpamplona.quartz.nip01Core.signers.eventTemplate
 import com.vitorpamplona.quartz.nip31Alts.alt
+import com.vitorpamplona.quartz.nip50Search.SearchableEvent
 import com.vitorpamplona.quartz.utils.TimeUtils
 
 @Immutable
@@ -39,7 +40,10 @@ class AudioHeaderEvent(
     tags: Array<Array<String>>,
     content: String,
     sig: HexKey,
-) : Event(id, pubKey, createdAt, KIND, tags, content, sig) {
+) : Event(id, pubKey, createdAt, KIND, tags, content, sig),
+    SearchableEvent {
+    override fun indexableContent() = content
+
     fun download() = tags.firstNotNullOfOrNull(DownloadUrlTag::parse)
 
     fun stream() = tags.firstNotNullOfOrNull(StreamUrlTag::parse)
diff --git a/quartz/src/commonMain/kotlin/com/vitorpamplona/quartz/experimental/audio/track/AudioTrackEvent.kt b/quartz/src/commonMain/kotlin/com/vitorpamplona/quartz/experimental/audio/track/AudioTrackEvent.kt
index 1726dd0b27..56c45a3920 100644
--- a/quartz/src/commonMain/kotlin/com/vitorpamplona/quartz/experimental/audio/track/AudioTrackEvent.kt
+++ b/quartz/src/commonMain/kotlin/com/vitorpamplona/quartz/experimental/audio/track/AudioTrackEvent.kt
@@ -31,7 +31,9 @@ import com.vitorpamplona.quartz.nip01Core.core.HexKey
 import com.vitorpamplona.quartz.nip01Core.core.TagArrayBuilder
 import com.vitorpamplona.quartz.nip01Core.signers.eventTemplate
 import com.vitorpamplona.quartz.nip01Core.tags.dTag.dTag
+import com.vitorpamplona.quartz.nip14Subject.SubjectTag
 import com.vitorpamplona.quartz.nip31Alts.alt
+import com.vitorpamplona.quartz.nip50Search.SearchableEvent
 import com.vitorpamplona.quartz.utils.TimeUtils
 import kotlin.uuid.ExperimentalUuidApi
 import kotlin.uuid.Uuid
@@ -44,7 +46,13 @@ class AudioTrackEvent(
     tags: Array<Array<String>>,
     content: String,
     sig: HexKey,
-) : BaseAddressableEvent(id, pubKey, createdAt, KIND, tags, content, sig) {
+) : BaseAddressableEvent(id, pubKey, createdAt, KIND, tags, content, sig),
+    SearchableEvent {
+    // content is empty for audio tracks; the only free-text is the subject tag.
+    override fun indexableContent() = listOfNotNull(subject()).joinToString("\n")
+
+    fun subject() = tags.firstNotNullOfOrNull(SubjectTag::parse)
+
     fun participants() = tags.mapNotNull(ParticipantTag::parse)
 
     fun type() = tags.firstNotNullOfOrNull(TypeTag::parse)
diff --git a/quartz/src/commonMain/kotlin/com/vitorpamplona/quartz/experimental/nip82SoftwareApps/release/SoftwareReleaseEvent.kt b/quartz/src/commonMain/kotlin/com/vitorpamplona/quartz/experimental/nip82SoftwareApps/release/SoftwareReleaseEvent.kt
index 7e802fd248..1927c70c97 100644
--- a/quartz/src/commonMain/kotlin/com/vitorpamplona/quartz/experimental/nip82SoftwareApps/release/SoftwareReleaseEvent.kt
+++ b/quartz/src/commonMain/kotlin/com/vitorpamplona/quartz/experimental/nip82SoftwareApps/release/SoftwareReleaseEvent.kt
@@ -31,6 +31,7 @@ import com.vitorpamplona.quartz.nip01Core.hints.EventHintProvider
 import com.vitorpamplona.quartz.nip01Core.signers.eventTemplate
 import com.vitorpamplona.quartz.nip01Core.tags.dTag.dTag
 import com.vitorpamplona.quartz.nip31Alts.alt
+import com.vitorpamplona.quartz.nip50Search.SearchableEvent
 import com.vitorpamplona.quartz.utils.TimeUtils
 
 /**
@@ -55,7 +56,13 @@ class SoftwareReleaseEvent(
     content: String,
     sig: HexKey,
 ) : BaseAddressableEvent(id, pubKey, createdAt, KIND, tags, content, sig),
-    EventHintProvider {
+    EventHintProvider,
+    SearchableEvent {
+    // content carries the release notes (free-text). NOTE: kind 30063 collides
+    // with NIP-51 ReleaseArtifactSetEvent, which is what EventFactory builds for
+    // stored events — so in practice this override is not exercised at runtime.
+    override fun indexableContent() = content
+
     override fun eventHints() = tags.mapNotNull(AssetTag::parseAsHint)
 
     override fun linkedEventIds() = tags.mapNotNull(AssetTag::parseId)
diff --git a/quartz/src/commonMain/kotlin/com/vitorpamplona/quartz/nip34Git/reply/GitReplyEvent.kt b/quartz/src/commonMain/kotlin/com/vitorpamplona/quartz/nip34Git/reply/GitReplyEvent.kt
index a738bccec8..464a1d238e 100644
--- a/quartz/src/commonMain/kotlin/com/vitorpamplona/quartz/nip34Git/reply/GitReplyEvent.kt
+++ b/quartz/src/commonMain/kotlin/com/vitorpamplona/quartz/nip34Git/reply/GitReplyEvent.kt
@@ -47,6 +47,7 @@ import com.vitorpamplona.quartz.nip19Bech32.pubKeyHints
 import com.vitorpamplona.quartz.nip19Bech32.pubKeys
 import com.vitorpamplona.quartz.nip34Git.issue.GitIssueEvent
 import com.vitorpamplona.quartz.nip34Git.patch.GitPatchEvent
+import com.vitorpamplona.quartz.nip50Search.SearchableEvent
 import com.vitorpamplona.quartz.utils.TimeUtils
 import com.vitorpamplona.quartz.utils.lastNotNullOfOrNull
 
@@ -62,7 +63,10 @@ class GitReplyEvent(
 ) : BaseThreadedEvent(id, pubKey, createdAt, KIND, tags, content, sig),
     PubKeyHintProvider,
     EventHintProvider,
-    AddressHintProvider {
+    AddressHintProvider,
+    SearchableEvent {
+    override fun indexableContent() = content
+
     override fun eventHints(): List<EventIdHint> {
         val eHints = tags.mapNotNull(ETag::parseAsHint)
         val qHints = tags.mapNotNull(QTag::parseEventAsHint)
diff --git a/quartz/src/commonMain/kotlin/com/vitorpamplona/quartz/nip35Torrents/TorrentCommentEvent.kt b/quartz/src/commonMain/kotlin/com/vitorpamplona/quartz/nip35Torrents/TorrentCommentEvent.kt
index 8b0f8b15b9..699e64911d 100644
--- a/quartz/src/commonMain/kotlin/com/vitorpamplona/quartz/nip35Torrents/TorrentCommentEvent.kt
+++ b/quartz/src/commonMain/kotlin/com/vitorpamplona/quartz/nip35Torrents/TorrentCommentEvent.kt
@@ -48,6 +48,7 @@ import com.vitorpamplona.quartz.nip19Bech32.eventIds
 import com.vitorpamplona.quartz.nip19Bech32.pubKeyHints
 import com.vitorpamplona.quartz.nip19Bech32.pubKeys
 import com.vitorpamplona.quartz.nip31Alts.alt
+import com.vitorpamplona.quartz.nip50Search.SearchableEvent
 import com.vitorpamplona.quartz.utils.TimeUtils
 
 @Immutable
@@ -62,7 +63,10 @@ class TorrentCommentEvent(
 ) : BaseThreadedEvent(id, pubKey, createdAt, KIND, tags, content, sig),
     EventHintProvider,
     PubKeyHintProvider,
-    AddressHintProvider {
+    AddressHintProvider,
+    SearchableEvent {
+    override fun indexableContent() = content
+
     override fun eventHints(): List<EventIdHint> {
         val eHints = tags.mapNotNull(MarkedETag::parseAsHint)
         val qHints = tags.mapNotNull(QTag::parseEventAsHint)
diff --git a/quartz/src/commonMain/kotlin/com/vitorpamplona/quartz/nip51Lists/interestSet/InterestSetEvent.kt b/quartz/src/commonMain/kotlin/com/vitorpamplona/quartz/nip51Lists/interestSet/InterestSetEvent.kt
index 3b8c956ffd..12072ab335 100644
--- a/quartz/src/commonMain/kotlin/com/vitorpamplona/quartz/nip51Lists/interestSet/InterestSetEvent.kt
+++ b/quartz/src/commonMain/kotlin/com/vitorpamplona/quartz/nip51Lists/interestSet/InterestSetEvent.kt
@@ -33,10 +33,13 @@ import com.vitorpamplona.quartz.nip01Core.tags.dTag.dTag
 import com.vitorpamplona.quartz.nip01Core.tags.hashtags.HashtagTag
 import com.vitorpamplona.quartz.nip31Alts.AltTag
 import com.vitorpamplona.quartz.nip31Alts.alt
+import com.vitorpamplona.quartz.nip50Search.SearchableEvent
 import com.vitorpamplona.quartz.nip51Lists.PrivateTagArrayEvent
 import com.vitorpamplona.quartz.nip51Lists.encryption.PrivateTagsInContent
 import com.vitorpamplona.quartz.nip51Lists.removeAny
 import com.vitorpamplona.quartz.nip51Lists.removeIgnoreCase
+import com.vitorpamplona.quartz.nip51Lists.tags.DescriptionTag
+import com.vitorpamplona.quartz.nip51Lists.tags.TitleTag
 import com.vitorpamplona.quartz.utils.TimeUtils
 import kotlin.uuid.ExperimentalUuidApi
 import kotlin.uuid.Uuid
@@ -49,7 +52,16 @@ class InterestSetEvent(
     tags: Array<Array<String>>,
     content: String,
     sig: HexKey,
-) : PrivateTagArrayEvent(id, pubKey, createdAt, KIND, tags, content, sig) {
+) : PrivateTagArrayEvent(id, pubKey, createdAt, KIND, tags, content, sig),
+    SearchableEvent {
+    // Public title/description plus the public-interest hashtags. Private
+    // hashtags live in NIP-44 encrypted content and are never indexed.
+    override fun indexableContent() = (listOfNotNull(title(), description()) + publicHashtags()).joinToString("\n")
+
+    fun title() = tags.firstNotNullOfOrNull(TitleTag::parse)
+
+    fun description() = tags.firstNotNullOfOrNull(DescriptionTag::parse)
+
     fun publicHashtags() = tags.mapNotNull(HashtagTag::parse)
 
     suspend fun privateHashtags(signer: NostrSigner) = privateTags(signer)?.mapNotNull(HashtagTag::parse)
diff --git a/quartz/src/commonMain/kotlin/com/vitorpamplona/quartz/nip88Polls/poll/PollEvent.kt b/quartz/src/commonMain/kotlin/com/vitorpamplona/quartz/nip88Polls/poll/PollEvent.kt
index 63647352ec..e6f0976082 100644
--- a/quartz/src/commonMain/kotlin/com/vitorpamplona/quartz/nip88Polls/poll/PollEvent.kt
+++ b/quartz/src/commonMain/kotlin/com/vitorpamplona/quartz/nip88Polls/poll/PollEvent.kt
@@ -28,6 +28,7 @@ import com.vitorpamplona.quartz.nip01Core.relay.normalizer.NormalizedRelayUrl
 import com.vitorpamplona.quartz.nip01Core.signers.eventTemplate
 import com.vitorpamplona.quartz.nip22Comments.RootScope
 import com.vitorpamplona.quartz.nip31Alts.alt
+import com.vitorpamplona.quartz.nip50Search.SearchableEvent
 import com.vitorpamplona.quartz.nip88Polls.poll.tags.OptionTag
 import com.vitorpamplona.quartz.nip88Polls.poll.tags.PollType
 import com.vitorpamplona.quartz.utils.TimeUtils
@@ -41,7 +42,14 @@ class PollEvent(
     content: String,
     sig: HexKey,
 ) : Event(id, pubKey, createdAt, KIND, tags, content, sig),
-    RootScope {
+    RootScope,
+    SearchableEvent {
+    override fun indexableContent() =
+        buildString {
+            append(content)
+            options().forEach { append('\n').append(it.label) }
+        }
+
     fun options() = tags.options()
 
     fun relays() = tags.relays()
diff --git a/quartz/src/commonMain/kotlin/com/vitorpamplona/quartz/nipC0CodeSnippets/CodeSnippetEvent.kt b/quartz/src/commonMain/kotlin/com/vitorpamplona/quartz/nipC0CodeSnippets/CodeSnippetEvent.kt
index 42008395f7..9c07eeb531 100644
--- a/quartz/src/commonMain/kotlin/com/vitorpamplona/quartz/nipC0CodeSnippets/CodeSnippetEvent.kt
+++ b/quartz/src/commonMain/kotlin/com/vitorpamplona/quartz/nipC0CodeSnippets/CodeSnippetEvent.kt
@@ -27,6 +27,7 @@ import com.vitorpamplona.quartz.nip01Core.core.TagArrayBuilder
 import com.vitorpamplona.quartz.nip01Core.signers.eventTemplate
 import com.vitorpamplona.quartz.nip22Comments.RootScope
 import com.vitorpamplona.quartz.nip31Alts.alt
+import com.vitorpamplona.quartz.nip50Search.SearchableEvent
 import com.vitorpamplona.quartz.utils.TimeUtils
 
 /**
@@ -43,7 +44,10 @@ class CodeSnippetEvent(
     content: String,
     sig: HexKey,
 ) : Event(id, pubKey, createdAt, KIND, tags, content, sig),
-    RootScope {
+    RootScope,
+    SearchableEvent {
+    override fun indexableContent() = listOfNotNull(snippetName(), snippetDescription(), content).joinToString("\n")
+
     /** Programming language, lowercase (e.g. "python"). */
     fun language() = tags.language()