diff --git a/server/src/main/kotlin/suwayomi/tachidesk/graphql/mutations/CategoryMutation.kt b/server/src/main/kotlin/suwayomi/tachidesk/graphql/mutations/CategoryMutation.kt
index ba3f8b9b..132a399e 100644
--- a/server/src/main/kotlin/suwayomi/tachidesk/graphql/mutations/CategoryMutation.kt
+++ b/server/src/main/kotlin/suwayomi/tachidesk/graphql/mutations/CategoryMutation.kt
@@ -1,13 +1,17 @@
 package suwayomi.tachidesk.graphql.mutations
 
 import graphql.execution.DataFetcherResult
+import org.jetbrains.exposed.sql.LikePattern
+import org.jetbrains.exposed.sql.Op
 import org.jetbrains.exposed.sql.SqlExpressionBuilder.eq
 import org.jetbrains.exposed.sql.SqlExpressionBuilder.inList
+import org.jetbrains.exposed.sql.SqlExpressionBuilder.like
 import org.jetbrains.exposed.sql.SqlExpressionBuilder.minus
 import org.jetbrains.exposed.sql.SqlExpressionBuilder.plus
 import org.jetbrains.exposed.sql.and
 import org.jetbrains.exposed.sql.deleteWhere
 import org.jetbrains.exposed.sql.insertAndGetId
+import org.jetbrains.exposed.sql.or
 import org.jetbrains.exposed.sql.selectAll
 import org.jetbrains.exposed.sql.transactions.transaction
 import org.jetbrains.exposed.sql.update
@@ -16,6 +20,7 @@ import suwayomi.tachidesk.graphql.directives.RequireAuth
 import suwayomi.tachidesk.graphql.types.CategoryMetaType
 import suwayomi.tachidesk.graphql.types.CategoryType
 import suwayomi.tachidesk.graphql.types.MangaType
+import suwayomi.tachidesk.graphql.types.MetaInput
 import suwayomi.tachidesk.manga.impl.Category
 import suwayomi.tachidesk.manga.impl.CategoryManga
 import suwayomi.tachidesk.manga.impl.util.lang.isEmpty
@@ -88,6 +93,138 @@ class CategoryMutation {
             DeleteCategoryMetaPayload(clientMutationId, meta, category)
         }
 
+    data class SetCategoryMetasItem(
+        val categoryIds: List<Int>,
+        val metas: List<MetaInput>,
+    )
+
+    data class SetCategoryMetasInput(
+        val clientMutationId: String? = null,
+        val items: List<SetCategoryMetasItem>,
+    )
+
+    data class SetCategoryMetasPayload(
+        val clientMutationId: String?,
+        val metas: List<CategoryMetaType>,
+        val categories: List<CategoryType>,
+    )
+
+    @RequireAuth
+    fun setCategoryMetas(input: SetCategoryMetasInput): DataFetcherResult<SetCategoryMetasPayload?> =
+        asDataFetcherResult {
+            val (clientMutationId, items) = input
+
+            val metaByCategoryId =
+                items
+                    .flatMap { item ->
+                        val metaMap = item.metas.associate { it.key to it.value }
+                        item.categoryIds.map { categoryId -> categoryId to metaMap }
+                    }.groupBy({ it.first }, { it.second })
+                    .mapValues { (_, maps) -> maps.reduce { acc, map -> acc + map } }
+
+            Category.modifyCategoriesMetas(metaByCategoryId)
+
+            val allCategoryIds = metaByCategoryId.keys
+            val allMetaKeys = metaByCategoryId.values.flatMap { item -> item.keys }.distinct()
+
+            val (updatedMetas, categories) =
+                transaction {
+                    val updatedMetas =
+                        CategoryMetaTable
+                            .selectAll()
+                            .where { (CategoryMetaTable.ref inList allCategoryIds) and (CategoryMetaTable.key inList allMetaKeys) }
+                            .map { CategoryMetaType(it) }
+
+                    val categories =
+                        CategoryTable
+                            .selectAll()
+                            .where { CategoryTable.id inList allCategoryIds }
+                            .map { CategoryType(it) }
+                            .distinctBy { it.id }
+
+                    updatedMetas to categories
+                }
+
+            SetCategoryMetasPayload(clientMutationId, updatedMetas, categories)
+        }
+
+    data class DeleteCategoryMetasItem(
+        val categoryIds: List<Int>,
+        val keys: List<String>? = null,
+        val prefixes: List<String>? = null,
+    )
+
+    data class DeleteCategoryMetasInput(
+        val clientMutationId: String? = null,
+        val items: List<DeleteCategoryMetasItem>,
+    )
+
+    data class DeleteCategoryMetasPayload(
+        val clientMutationId: String?,
+        val metas: List<CategoryMetaType>,
+        val categories: List<CategoryType>,
+    )
+
+    @RequireAuth
+    fun deleteCategoryMetas(input: DeleteCategoryMetasInput): DataFetcherResult<DeleteCategoryMetasPayload?> =
+        asDataFetcherResult {
+            val (clientMutationId, items) = input
+
+            items.forEach { item ->
+                require(!item.keys.isNullOrEmpty() || !item.prefixes.isNullOrEmpty()) {
+                    "Either 'keys' or 'prefixes' must be provided for each item"
+                }
+            }
+
+            val (allDeletedMetas, allCategoryIds) =
+                transaction {
+                    val deletedMetas = mutableListOf<CategoryMetaType>()
+                    val categoryIds = mutableSetOf<Int>()
+
+                    items.forEach { item ->
+                        val keyCondition: Op<Boolean>? =
+                            item.keys?.takeIf { it.isNotEmpty() }?.let { CategoryMetaTable.key inList it }
+
+                        val prefixCondition: Op<Boolean>? =
+                            item.prefixes
+                                ?.filter { it.isNotEmpty() }
+                                ?.map { (CategoryMetaTable.key like LikePattern("$it%")) as Op<Boolean> }
+                                ?.reduceOrNull { acc, op -> acc or op }
+
+                        val metaKeyCondition =
+                            if (keyCondition != null && prefixCondition != null) {
+                                keyCondition or prefixCondition
+                            } else {
+                                keyCondition ?: prefixCondition!!
+                            }
+
+                        val condition = (CategoryMetaTable.ref inList item.categoryIds) and metaKeyCondition
+
+                        deletedMetas +=
+                            CategoryMetaTable
+                                .selectAll()
+                                .where { condition }
+                                .map { CategoryMetaType(it) }
+
+                        CategoryMetaTable.deleteWhere { condition }
+                        categoryIds += item.categoryIds
+                    }
+
+                    deletedMetas to categoryIds
+                }
+
+            val categories =
+                transaction {
+                    CategoryTable
+                        .selectAll()
+                        .where { CategoryTable.id inList allCategoryIds }
+                        .map { CategoryType(it) }
+                        .distinctBy { it.id }
+                }
+
+            DeleteCategoryMetasPayload(clientMutationId, allDeletedMetas, categories)
+        }
+
     data class UpdateCategoryPatch(
         val name: String? = null,
         val default: Boolean? = null,
diff --git a/server/src/main/kotlin/suwayomi/tachidesk/graphql/mutations/ChapterMutation.kt b/server/src/main/kotlin/suwayomi/tachidesk/graphql/mutations/ChapterMutation.kt
index 81857ffa..9d33fcf3 100644
--- a/server/src/main/kotlin/suwayomi/tachidesk/graphql/mutations/ChapterMutation.kt
+++ b/server/src/main/kotlin/suwayomi/tachidesk/graphql/mutations/ChapterMutation.kt
@@ -4,9 +4,14 @@ import graphql.execution.DataFetcherResult
 import kotlinx.coroutines.GlobalScope
 import kotlinx.coroutines.launch
 import org.jetbrains.exposed.dao.id.EntityID
+import org.jetbrains.exposed.sql.LikePattern
+import org.jetbrains.exposed.sql.Op
 import org.jetbrains.exposed.sql.SqlExpressionBuilder.eq
+import org.jetbrains.exposed.sql.SqlExpressionBuilder.inList
+import org.jetbrains.exposed.sql.SqlExpressionBuilder.like
 import org.jetbrains.exposed.sql.and
 import org.jetbrains.exposed.sql.deleteWhere
+import org.jetbrains.exposed.sql.or
 import org.jetbrains.exposed.sql.selectAll
 import org.jetbrains.exposed.sql.statements.BatchUpdateStatement
 import org.jetbrains.exposed.sql.transactions.transaction
@@ -15,6 +20,7 @@ import suwayomi.tachidesk.graphql.asDataFetcherResult
 import suwayomi.tachidesk.graphql.directives.RequireAuth
 import suwayomi.tachidesk.graphql.types.ChapterMetaType
 import suwayomi.tachidesk.graphql.types.ChapterType
+import suwayomi.tachidesk.graphql.types.MetaInput
 import suwayomi.tachidesk.graphql.types.SyncConflictInfoType
 import suwayomi.tachidesk.manga.impl.Chapter
 import suwayomi.tachidesk.manga.impl.chapter.getChapterDownloadReadyById
@@ -246,6 +252,138 @@ class ChapterMutation {
             DeleteChapterMetaPayload(clientMutationId, meta, chapter)
         }
 
+    data class SetChapterMetasItem(
+        val chapterIds: List<Int>,
+        val metas: List<MetaInput>,
+    )
+
+    data class SetChapterMetasInput(
+        val clientMutationId: String? = null,
+        val items: List<SetChapterMetasItem>,
+    )
+
+    data class SetChapterMetasPayload(
+        val clientMutationId: String?,
+        val metas: List<ChapterMetaType>,
+        val chapters: List<ChapterType>,
+    )
+
+    @RequireAuth
+    fun setChapterMetas(input: SetChapterMetasInput): DataFetcherResult<SetChapterMetasPayload?> =
+        asDataFetcherResult {
+            val (clientMutationId, items) = input
+
+            val metaByChapterId =
+                items
+                    .flatMap { item ->
+                        val metaMap = item.metas.associate { it.key to it.value }
+                        item.chapterIds.map { chapterId -> chapterId to metaMap }
+                    }.groupBy({ it.first }, { it.second })
+                    .mapValues { (_, maps) -> maps.reduce { acc, map -> acc + map } }
+
+            Chapter.modifyChaptersMetas(metaByChapterId)
+
+            val allChapterIds = metaByChapterId.keys
+            val allMetaKeys = metaByChapterId.values.flatMap { it.keys }.distinct()
+
+            val (updatedMetas, chapters) =
+                transaction {
+                    val updatedMetas =
+                        ChapterMetaTable
+                            .selectAll()
+                            .where { (ChapterMetaTable.ref inList allChapterIds) and (ChapterMetaTable.key inList allMetaKeys) }
+                            .map { ChapterMetaType(it) }
+
+                    val chapters =
+                        ChapterTable
+                            .selectAll()
+                            .where { ChapterTable.id inList allChapterIds }
+                            .map { ChapterType(it) }
+                            .distinctBy { it.id }
+
+                    updatedMetas to chapters
+                }
+
+            SetChapterMetasPayload(clientMutationId, updatedMetas, chapters)
+        }
+
+    data class DeleteChapterMetasItem(
+        val chapterIds: List<Int>,
+        val keys: List<String>? = null,
+        val prefixes: List<String>? = null,
+    )
+
+    data class DeleteChapterMetasInput(
+        val clientMutationId: String? = null,
+        val items: List<DeleteChapterMetasItem>,
+    )
+
+    data class DeleteChapterMetasPayload(
+        val clientMutationId: String?,
+        val metas: List<ChapterMetaType>,
+        val chapters: List<ChapterType>,
+    )
+
+    @RequireAuth
+    fun deleteChapterMetas(input: DeleteChapterMetasInput): DataFetcherResult<DeleteChapterMetasPayload?> =
+        asDataFetcherResult {
+            val (clientMutationId, items) = input
+
+            items.forEach { item ->
+                require(!item.keys.isNullOrEmpty() || !item.prefixes.isNullOrEmpty()) {
+                    "Either 'keys' or 'prefixes' must be provided for each item"
+                }
+            }
+
+            val (allDeletedMetas, allChapterIds) =
+                transaction {
+                    val deletedMetas = mutableListOf<ChapterMetaType>()
+                    val chapterIds = mutableSetOf<Int>()
+
+                    items.forEach { item ->
+                        val keyCondition: Op<Boolean>? =
+                            item.keys?.takeIf { it.isNotEmpty() }?.let { ChapterMetaTable.key inList it }
+
+                        val prefixCondition: Op<Boolean>? =
+                            item.prefixes
+                                ?.filter { it.isNotEmpty() }
+                                ?.map { (ChapterMetaTable.key like LikePattern("$it%")) as Op<Boolean> }
+                                ?.reduceOrNull { acc, op -> acc or op }
+
+                        val metaKeyCondition =
+                            if (keyCondition != null && prefixCondition != null) {
+                                keyCondition or prefixCondition
+                            } else {
+                                keyCondition ?: prefixCondition!!
+                            }
+
+                        val condition = (ChapterMetaTable.ref inList item.chapterIds) and metaKeyCondition
+
+                        deletedMetas +=
+                            ChapterMetaTable
+                                .selectAll()
+                                .where { condition }
+                                .map { ChapterMetaType(it) }
+
+                        ChapterMetaTable.deleteWhere { condition }
+                        chapterIds += item.chapterIds
+                    }
+
+                    deletedMetas to chapterIds
+                }
+
+            val chapters =
+                transaction {
+                    ChapterTable
+                        .selectAll()
+                        .where { ChapterTable.id inList allChapterIds }
+                        .map { ChapterType(it) }
+                        .distinctBy { it.id }
+                }
+
+            DeleteChapterMetasPayload(clientMutationId, allDeletedMetas, chapters)
+        }
+
     data class FetchChapterPagesInput(
         val clientMutationId: String? = null,
         val chapterId: Int,
diff --git a/server/src/main/kotlin/suwayomi/tachidesk/graphql/mutations/MangaMutation.kt b/server/src/main/kotlin/suwayomi/tachidesk/graphql/mutations/MangaMutation.kt
index a3ad7b5f..175c790f 100644
--- a/server/src/main/kotlin/suwayomi/tachidesk/graphql/mutations/MangaMutation.kt
+++ b/server/src/main/kotlin/suwayomi/tachidesk/graphql/mutations/MangaMutation.kt
@@ -1,9 +1,14 @@
 package suwayomi.tachidesk.graphql.mutations
 
 import graphql.execution.DataFetcherResult
+import org.jetbrains.exposed.sql.LikePattern
+import org.jetbrains.exposed.sql.Op
 import org.jetbrains.exposed.sql.SqlExpressionBuilder.eq
+import org.jetbrains.exposed.sql.SqlExpressionBuilder.inList
+import org.jetbrains.exposed.sql.SqlExpressionBuilder.like
 import org.jetbrains.exposed.sql.and
 import org.jetbrains.exposed.sql.deleteWhere
+import org.jetbrains.exposed.sql.or
 import org.jetbrains.exposed.sql.selectAll
 import org.jetbrains.exposed.sql.transactions.transaction
 import org.jetbrains.exposed.sql.update
@@ -11,6 +16,7 @@ import suwayomi.tachidesk.graphql.asDataFetcherResult
 import suwayomi.tachidesk.graphql.directives.RequireAuth
 import suwayomi.tachidesk.graphql.types.MangaMetaType
 import suwayomi.tachidesk.graphql.types.MangaType
+import suwayomi.tachidesk.graphql.types.MetaInput
 import suwayomi.tachidesk.manga.impl.Library
 import suwayomi.tachidesk.manga.impl.Manga
 import suwayomi.tachidesk.manga.impl.update.IUpdater
@@ -226,4 +232,138 @@ class MangaMutation {
             DeleteMangaMetaPayload(clientMutationId, meta, manga)
         }
     }
+
+    data class SetMangaMetasItem(
+        val mangaIds: List<Int>,
+        val metas: List<MetaInput>,
+    )
+
+    data class SetMangaMetasInput(
+        val clientMutationId: String? = null,
+        val items: List<SetMangaMetasItem>,
+    )
+
+    data class SetMangaMetasPayload(
+        val clientMutationId: String?,
+        val metas: List<MangaMetaType>,
+        val mangas: List<MangaType>,
+    )
+
+    @RequireAuth
+    fun setMangaMetas(input: SetMangaMetasInput): DataFetcherResult<SetMangaMetasPayload?> {
+        val (clientMutationId, items) = input
+
+        return asDataFetcherResult {
+            val metaByMangaId =
+                items
+                    .flatMap { item ->
+                        val metaMap = item.metas.associate { it.key to it.value }
+                        item.mangaIds.map { mangaId -> mangaId to metaMap }
+                    }.groupBy({ it.first }, { it.second })
+                    .mapValues { (_, maps) -> maps.reduce { acc, map -> acc + map } }
+
+            Manga.modifyMangasMetas(metaByMangaId)
+
+            val allMangaIds = metaByMangaId.keys
+            val allMetaKeys = metaByMangaId.values.flatMap { it.keys }.distinct()
+
+            val (updatedMetas, mangas) =
+                transaction {
+                    val updatedMetas =
+                        MangaMetaTable
+                            .selectAll()
+                            .where { (MangaMetaTable.ref inList allMangaIds) and (MangaMetaTable.key inList allMetaKeys) }
+                            .map { MangaMetaType(it) }
+
+                    val mangas =
+                        MangaTable
+                            .selectAll()
+                            .where { MangaTable.id inList allMangaIds }
+                            .map { MangaType(it) }
+                            .distinctBy { it.id }
+
+                    updatedMetas to mangas
+                }
+
+            SetMangaMetasPayload(clientMutationId, updatedMetas, mangas)
+        }
+    }
+
+    data class DeleteMangaMetasItem(
+        val mangaIds: List<Int>,
+        val keys: List<String>? = null,
+        val prefixes: List<String>? = null,
+    )
+
+    data class DeleteMangaMetasInput(
+        val clientMutationId: String? = null,
+        val items: List<DeleteMangaMetasItem>,
+    )
+
+    data class DeleteMangaMetasPayload(
+        val clientMutationId: String?,
+        val metas: List<MangaMetaType>,
+        val mangas: List<MangaType>,
+    )
+
+    @RequireAuth
+    fun deleteMangaMetas(input: DeleteMangaMetasInput): DataFetcherResult<DeleteMangaMetasPayload?> {
+        val (clientMutationId, items) = input
+
+        return asDataFetcherResult {
+            items.forEach { item ->
+                require(!item.keys.isNullOrEmpty() || !item.prefixes.isNullOrEmpty()) {
+                    "Either 'keys' or 'prefixes' must be provided for each item"
+                }
+            }
+
+            val (allDeletedMetas, allMangaIds) =
+                transaction {
+                    val deletedMetas = mutableListOf<MangaMetaType>()
+                    val mangaIds = mutableSetOf<Int>()
+
+                    items.forEach { item ->
+                        val keyCondition: Op<Boolean>? =
+                            item.keys?.takeIf { it.isNotEmpty() }?.let { MangaMetaTable.key inList it }
+
+                        val prefixCondition: Op<Boolean>? =
+                            item.prefixes
+                                ?.filter { it.isNotEmpty() }
+                                ?.map { (MangaMetaTable.key like LikePattern("$it%")) as Op<Boolean> }
+                                ?.reduceOrNull { acc, op -> acc or op }
+
+                        val metaKeyCondition =
+                            if (keyCondition != null && prefixCondition != null) {
+                                keyCondition or prefixCondition
+                            } else {
+                                keyCondition ?: prefixCondition!!
+                            }
+
+                        val condition = (MangaMetaTable.ref inList item.mangaIds) and metaKeyCondition
+
+                        deletedMetas +=
+                            MangaMetaTable
+                                .selectAll()
+                                .where { condition }
+                                .map { MangaMetaType(it) }
+
+                        MangaMetaTable.deleteWhere { condition }
+                        mangaIds += item.mangaIds
+                    }
+
+                    deletedMetas to mangaIds
+                }
+
+            val mangas =
+                transaction {
+                    MangaTable
+                        .selectAll()
+                        .where { MangaTable.id inList allMangaIds }
+                        .map { MangaType(it) }
+                        .distinctBy { it.id }
+                }
+
+            DeleteMangaMetasPayload(clientMutationId, allDeletedMetas, mangas)
+        }
+    }
 }
diff --git a/server/src/main/kotlin/suwayomi/tachidesk/graphql/mutations/MetaMutation.kt b/server/src/main/kotlin/suwayomi/tachidesk/graphql/mutations/MetaMutation.kt
index 971b0b41..f2926528 100644
--- a/server/src/main/kotlin/suwayomi/tachidesk/graphql/mutations/MetaMutation.kt
+++ b/server/src/main/kotlin/suwayomi/tachidesk/graphql/mutations/MetaMutation.kt
@@ -1,8 +1,13 @@
 package suwayomi.tachidesk.graphql.mutations
 
 import graphql.execution.DataFetcherResult
+import org.jetbrains.exposed.sql.LikePattern
+import org.jetbrains.exposed.sql.Op
 import org.jetbrains.exposed.sql.SqlExpressionBuilder.eq
+import org.jetbrains.exposed.sql.SqlExpressionBuilder.inList
+import org.jetbrains.exposed.sql.SqlExpressionBuilder.like
 import org.jetbrains.exposed.sql.deleteWhere
+import org.jetbrains.exposed.sql.or
 import org.jetbrains.exposed.sql.selectAll
 import org.jetbrains.exposed.sql.transactions.transaction
 import suwayomi.tachidesk.global.impl.GlobalMeta
@@ -10,6 +15,7 @@ import suwayomi.tachidesk.global.model.table.GlobalMetaTable
 import suwayomi.tachidesk.graphql.asDataFetcherResult
 import suwayomi.tachidesk.graphql.directives.RequireAuth
 import suwayomi.tachidesk.graphql.types.GlobalMetaType
+import suwayomi.tachidesk.graphql.types.MetaInput
 
 class MetaMutation {
     data class SetGlobalMetaInput(
@@ -68,4 +74,86 @@ class MetaMutation {
             DeleteGlobalMetaPayload(clientMutationId, meta)
         }
     }
+
+    data class SetGlobalMetasInput(
+        val clientMutationId: String? = null,
+        val metas: List<MetaInput>,
+    )
+
+    data class SetGlobalMetasPayload(
+        val clientMutationId: String?,
+        val metas: List<GlobalMetaType>,
+    )
+
+    @RequireAuth
+    fun setGlobalMetas(input: SetGlobalMetasInput): DataFetcherResult<SetGlobalMetasPayload?> {
+        val (clientMutationId, metas) = input
+
+        return asDataFetcherResult {
+            val metaMap = metas.associate { it.key to it.value }
+            GlobalMeta.modifyMetas(metaMap)
+
+            val updatedMetas =
+                transaction {
+                    GlobalMetaTable
+                        .selectAll()
+                        .where { GlobalMetaTable.key inList metaMap.keys }
+                        .map { GlobalMetaType(it) }
+                }
+
+            SetGlobalMetasPayload(clientMutationId, updatedMetas)
+        }
+    }
+
+    data class DeleteGlobalMetasInput(
+        val clientMutationId: String? = null,
+        val keys: List<String>? = null,
+        val prefixes: List<String>? = null,
+    )
+
+    data class DeleteGlobalMetasPayload(
+        val clientMutationId: String?,
+        val metas: List<GlobalMetaType>,
+    )
+
+    @RequireAuth
+    fun deleteGlobalMetas(input: DeleteGlobalMetasInput): DataFetcherResult<DeleteGlobalMetasPayload?> {
+        val (clientMutationId, keys, prefixes) = input
+
+        return asDataFetcherResult {
+            require(!keys.isNullOrEmpty() || !prefixes.isNullOrEmpty()) {
+                "Either 'keys' or 'prefixes' must be provided"
+            }
+
+            val metas =
+                transaction {
+                    val keyCondition: Op<Boolean>? = keys?.takeIf { it.isNotEmpty() }?.let { GlobalMetaTable.key inList it }
+
+                    val prefixCondition: Op<Boolean>? =
+                        prefixes
+                            ?.filter { it.isNotEmpty() }
+                            ?.map { (GlobalMetaTable.key like LikePattern("$it%")) as Op<Boolean> }
+                            ?.reduceOrNull { acc, op -> acc or op }
+
+                    val finalCondition =
+                        if (keyCondition != null && prefixCondition != null) {
+                            keyCondition or prefixCondition
+                        } else {
+                            keyCondition ?: prefixCondition!!
+                        }
+
+                    val metas =
+                        GlobalMetaTable
+                            .selectAll()
+                            .where { finalCondition }
+                            .map { GlobalMetaType(it) }
+
+                    GlobalMetaTable.deleteWhere { finalCondition }
+
+                    metas
+                }
+
+            DeleteGlobalMetasPayload(clientMutationId, metas)
+        }
+    }
 }
diff --git a/server/src/main/kotlin/suwayomi/tachidesk/graphql/mutations/SourceMutation.kt b/server/src/main/kotlin/suwayomi/tachidesk/graphql/mutations/SourceMutation.kt
index ebadf2a9..c9b619e7 100644
--- a/server/src/main/kotlin/suwayomi/tachidesk/graphql/mutations/SourceMutation.kt
+++ b/server/src/main/kotlin/suwayomi/tachidesk/graphql/mutations/SourceMutation.kt
@@ -6,15 +6,21 @@ import androidx.preference.ListPreference
 import androidx.preference.MultiSelectListPreference
 import androidx.preference.SwitchPreferenceCompat
 import graphql.execution.DataFetcherResult
+import org.jetbrains.exposed.sql.LikePattern
+import org.jetbrains.exposed.sql.Op
 import org.jetbrains.exposed.sql.SqlExpressionBuilder.eq
+import org.jetbrains.exposed.sql.SqlExpressionBuilder.inList
+import org.jetbrains.exposed.sql.SqlExpressionBuilder.like
 import org.jetbrains.exposed.sql.and
 import org.jetbrains.exposed.sql.deleteWhere
+import org.jetbrains.exposed.sql.or
 import org.jetbrains.exposed.sql.selectAll
 import org.jetbrains.exposed.sql.transactions.transaction
 import suwayomi.tachidesk.graphql.asDataFetcherResult
 import suwayomi.tachidesk.graphql.directives.RequireAuth
 import suwayomi.tachidesk.graphql.types.FilterChange
 import suwayomi.tachidesk.graphql.types.MangaType
+import suwayomi.tachidesk.graphql.types.MetaInput
 import suwayomi.tachidesk.graphql.types.Preference
 import suwayomi.tachidesk.graphql.types.SourceMetaType
 import suwayomi.tachidesk.graphql.types.SourceType
@@ -98,6 +104,140 @@ class SourceMutation {
         }
     }
 
+    data class SetSourceMetasItem(
+        val sourceIds: List<Long>,
+        val metas: List<MetaInput>,
+    )
+
+    data class SetSourceMetasInput(
+        val clientMutationId: String? = null,
+        val items: List<SetSourceMetasItem>,
+    )
+
+    data class SetSourceMetasPayload(
+        val clientMutationId: String?,
+        val metas: List<SourceMetaType>,
+        val sources: List<SourceType>,
+    )
+
+    @RequireAuth
+    fun setSourceMetas(input: SetSourceMetasInput): DataFetcherResult<SetSourceMetasPayload?> {
+        val (clientMutationId, items) = input
+
+        return asDataFetcherResult {
+            val metaBySourceId =
+                items
+                    .flatMap { item ->
+                        val metaMap = item.metas.associate { it.key to it.value }
+                        item.sourceIds.map { sourceId -> sourceId to metaMap }
+                    }.groupBy({ it.first }, { it.second })
+                    .mapValues { (_, maps) -> maps.reduce { acc, map -> acc + map } }
+
+            Source.modifySourceMetas(metaBySourceId)
+
+            val allSourceIds = metaBySourceId.keys
+            val allMetaKeys = metaBySourceId.values.flatMap { it.keys }.distinct()
+
+            val (updatedMetas, sources) =
+                transaction {
+                    val updatedMetas =
+                        SourceMetaTable
+                            .selectAll()
+                            .where { (SourceMetaTable.ref inList allSourceIds) and (SourceMetaTable.key inList allMetaKeys) }
+                            .map { SourceMetaType(it) }
+
+                    val sources =
+                        SourceTable
+                            .selectAll()
+                            .where { SourceTable.id inList allSourceIds }
+                            .mapNotNull { SourceType(it) }
+                            .distinctBy { it.id }
+
+                    updatedMetas to sources
+                }
+
+            SetSourceMetasPayload(clientMutationId, updatedMetas, sources)
+        }
+    }
+
+    data class DeleteSourceMetasItem(
+        val sourceIds: List<Long>,
+        val keys: List<String>? = null,
+        val prefixes: List<String>? = null,
+    )
+
+    data class DeleteSourceMetasInput(
+        val clientMutationId: String? = null,
+        val items: List<DeleteSourceMetasItem>,
+    )
+
+    data class DeleteSourceMetasPayload(
+        val clientMutationId: String?,
+        val metas: List<SourceMetaType>,
+        val sources: List<SourceType>,
+    )
+
+    @RequireAuth
+    fun deleteSourceMetas(input: DeleteSourceMetasInput): DataFetcherResult<DeleteSourceMetasPayload?> {
+        val (clientMutationId, items) = input
+
+        return asDataFetcherResult {
+            items.forEach { item ->
+                require(!item.keys.isNullOrEmpty() || !item.prefixes.isNullOrEmpty()) {
+                    "Either 'keys' or 'prefixes' must be provided for each item"
+                }
+            }
+
+            val (allDeletedMetas, allSourceIds) =
+                transaction {
+                    val deletedMetas = mutableListOf<SourceMetaType>()
+                    val sourceIds = mutableSetOf<Long>()
+
+                    items.forEach { item ->
+                        val keyCondition: Op<Boolean>? =
+                            item.keys?.takeIf { it.isNotEmpty() }?.let { SourceMetaTable.key inList it }
+
+                        val prefixCondition: Op<Boolean>? =
+                            item.prefixes
+                                ?.filter { it.isNotEmpty() }
+                                ?.map { (SourceMetaTable.key like LikePattern("$it%")) as Op<Boolean> }
+                                ?.reduceOrNull { acc, op -> acc or op }
+
+                        val metaKeyCondition =
+                            if (keyCondition != null && prefixCondition != null) {
+                                keyCondition or prefixCondition
+                            } else {
+                                keyCondition ?: prefixCondition!!
+                            }
+
+                        val condition = (SourceMetaTable.ref inList item.sourceIds) and metaKeyCondition
+
+                        deletedMetas +=
+                            SourceMetaTable
+                                .selectAll()
+                                .where { condition }
+                                .map { SourceMetaType(it) }
+
+                        SourceMetaTable.deleteWhere { condition }
+                        sourceIds += item.sourceIds
+                    }
+
+                    deletedMetas to sourceIds
+                }
+
+            val sources =
+                transaction {
+                    SourceTable
+                        .selectAll()
+                        .where { SourceTable.id inList allSourceIds }
+                        .mapNotNull { SourceType(it) }
+                        .distinctBy { it.id }
+                }
+
+            DeleteSourceMetasPayload(clientMutationId, allDeletedMetas, sources)
+        }
+    }
+
     enum class FetchSourceMangaType {
         SEARCH,
         POPULAR,
diff --git a/server/src/main/kotlin/suwayomi/tachidesk/graphql/types/MetaType.kt b/server/src/main/kotlin/suwayomi/tachidesk/graphql/types/MetaType.kt
index 2687dd43..4b1aaef6 100644
--- a/server/src/main/kotlin/suwayomi/tachidesk/graphql/types/MetaType.kt
+++ b/server/src/main/kotlin/suwayomi/tachidesk/graphql/types/MetaType.kt
@@ -20,6 +20,11 @@ interface MetaType : Node {
     val value: String
 }
 
+data class MetaInput(
+    val key: String,
+    val value: String,
+)
+
 class ChapterMetaType(
     override val key: String,
     override val value: String,