diff --git a/src/loaders/neoforge/neoforge-metadata-custom-payload.ts b/src/loaders/neoforge/neoforge-metadata-custom-payload.ts
new file mode 100644
index 0000000..a3622bb
--- /dev/null
+++ b/src/loaders/neoforge/neoforge-metadata-custom-payload.ts
@@ -0,0 +1,74 @@
+import { ACTION_NAME } from "@/action";
+import { Dependency, createDependency } from "@/dependencies";
+import { LoaderType } from "@/loaders/loader-type";
+import { PlatformType } from "@/platforms";
+import { PartialRecord } from "@/utils/types";
+import { RawNeoForgeMetadata } from "./raw-neoforge-metadata";
+import { asString } from "@/utils/string-utils";
+
+/**
+ * Custom payload for NeoForge metadata.
+ */
+export type NeoForgeMetadataCustomPayload = {
+    /**
+     * A list of supported mod loaders.
+     */
+    loaders?: string[];
+
+    /**
+     * A list of mod dependencies.
+     */
+    dependencies?: string[];
+}
+& PartialRecord<PlatformType, string>;
+
+/**
+ * Gets the custom payload from the NeoForge metadata.
+ *
+ * @param metadata - The raw NeoForge metadata.
+ *
+ * @returns The custom payload attached to the given metadata.
+ */
+export function getNeoForgeMetadataCustomPayload(metadata: RawNeoForgeMetadata): NeoForgeMetadataCustomPayload {
+    return metadata?.[ACTION_NAME] || {}
+}
+
+/**
+ * Gets an array of supported mod loaders from the custom payload attached to the NeoForge metadata.
+ *
+ * @param payload - The custom payload object.
+ *
+ * @returns An array of supported mod loaders.
+ */
+export function getLoadersFromNeoForgeMetadataCustomPayload(metadata: RawNeoForgeMetadata): string[] {
+    const payload = getNeoForgeMetadataCustomPayload(metadata);
+    return payload.loaders || [LoaderType.NEOFORGE];
+}
+
+/**
+ * Gets the dependencies from the custom payload attached to the NeoForge metadata.
+ *
+ * @param payload - The custom payload object.
+ *
+ * @returns An array of dependencies included into the custom payload.
+ */
+export function getDependenciesFromNeoForgeMetadataCustomPayload(payload: NeoForgeMetadataCustomPayload): Dependency[] {
+    if (!Array.isArray(payload?.dependencies)) {
+        return [];
+    }
+
+    return payload?.dependencies?.map(x => createDependency(x)).filter(x => x) || [];
+}
+
+/**
+ * Gets the project ID from the custom payload attached to the NeoForge metadata based on the given platform.
+ *
+ * @param payload - The custom payload object.
+ * @param platform - The platform for which the project ID is required.
+ *
+ * @returns The project ID as a string, or `undefined` if not found.
+ */
+export function getProjectIdFromNeoForgeMetadataCustomPayload(payload: NeoForgeMetadataCustomPayload, platform: PlatformType): string | undefined {
+    const id = payload?.[platform];
+    return id ? asString(id) : undefined;
+}