---
title: Validated Identifiers
---
`ValidatedIdentifier` is one of the more powerful validation tools. `ValidatedIdentifier` can provide:
* Suggestions for allowable identifiers
* Restrictions based on tags, registries, or defined lists
* ValidatedIdentifier implements most methods that `Identifier` itself does.
Use one of the companion static methods to create `ValidatedIdentifier` based on a registry, tag, or other Minecraft Identifier collection.
```java !!tabs Java
public ValidatedIdentifier fromRegistry = ValidatedIdentifier.ofRegistry(Identifier.of("cobblestone"), Registries.ITEM); //build from an MC registry
public ValidatedIdentifier fromRegistryKey = ValidatedIdentifier.ofRegistryKey(Identifier.of("cobblestone"), RegistryKeys.BLOCK); //build from an MC registry key pointing to a registry
public ValidatedIdentifier fromDynamicKey = ValidatedIdentifier.ofDynamicKey(RegistryKeys.LOOT_TABLE, "example_loot_sync_id", (id, entry) -> id.getPath().contains("gameplay")); //build from an MC registry key pointing to a dynamic registry, primarily used for registries that aren't synced to clients (like loot)
public ValidatedIdentifier fromTag = ValidatedIdentifier.ofTag(ItemTags.WOOL); //build from a tag.
public ValidatedIdentifier fromRegistryTags = ValidatedIdentifier.ofRegistryTags(RegistryKeys.DAMAGE_TYPE); //build a validated identifier with all the loaded tags for the specified registry as possible values.
public ValidatedIdentifier fromList = ValidatedIdentifier.ofList(myListOfIds); //build from a predefined list of identifiers. Check the other options first.
public ValidatedIdentifier fromSuppliedList = ValidatedIdentifier.ofSuppliedList(() -> myListOfIds); //same as ofList, but allows for dynamic supply of a list
```
```kotlin !!tabs Kotlin
var fromRegistry = ValidatedIdentifier.ofRegistry(Identifier.of("cobblestone"), Registries.ITEM) //build from an MC registry
var fromRegistryKey = ValidatedIdentifier.ofRegistryKey(Identifier.of("cobblestone"), RegistryKeys.BLOCK) //build from an MC registry key pointing to a registry
var fromDynamicKey = ValidatedIdentifier.ofDynamicKey(RegistryKeys.LOOT_TABLE, "example_loot_sync_id") { id: Identifier, _: RegistryEntry<*> -> id.path.contains("gameplay") } //build from an MC registry key pointing to a dynamic registry, primarily used for registries that aren't synced to clients (like loot)
var fromTag = ValidatedIdentifier.ofTag(ItemTags.WOOL) //build from a tag.
var fromRegistryTags = ValidatedIdentifier.ofRegistryTags(RegistryKeys.DAMAGE_TYPE) //build a validated identifier with all the loaded tags for the specified registry as possible values.
var fromList = ValidatedIdentifier.ofList(myListOfIds) //build from a predefined list of identifiers. Check the other options first.
var fromSuppliedList = ValidatedIdentifier.ofSuppliedList { myListOfIds } //same as ofList, but allows for dynamic supply of a list
```
For more details, check out the related documentation: Validated Identifier 🗗
If you need to implement a custom identifier filter, see: Allowable Identifiers 🗗