diff --git a/packages/contracts/src/support/services/Registrar.ts b/packages/contracts/src/support/services/Registrar.ts
new file mode 100644
index 00000000..2b8342c2
--- /dev/null
+++ b/packages/contracts/src/support/services/Registrar.ts
@@ -0,0 +1,101 @@
+import ServiceProvider from "./ServiceProvider";
+import ServiceProviderConstructor from "./ServiceProviderConstructor";
+
+
+/**
+ * Service Registrar
+ * 
+ * Able to register and boot service providers.
+ */
+export default interface Registrar
+{
+    /**
+     * Register a service provider
+     * 
+     * @param {ServiceProvider | ServiceProviderConstructor} provider
+     * @param {boolean} [boot=true]
+     * 
+     * @returns {Promise<boolean>} False if already registered
+     * 
+     * @async
+     */
+    register(provider: ServiceProvider | ServiceProviderConstructor, boot?: boolean): Promise<boolean>;
+
+    /**
+     * Register multiple service providers
+     * 
+     * @param {(ServiceProvider | ServiceProviderConstructor)[]} providers
+     * @param {boolean} [boot=true]
+     * @param {boolean} [safe=true] If true, given providers are only booted after all providers have been registered.
+     * 
+     * @returns {Promise<boolean>}
+     */
+    registerMultiple(providers: (ServiceProvider | ServiceProviderConstructor)[], boot?: boolean, safe?: boolean): Promise<boolean>;
+
+    /**
+     * Determine if service provider has already been registered
+     * 
+     * @param {ServiceProvider | ServiceProviderConstructor} provider
+     * 
+     * @returns {boolean}
+     */
+    isRegistered(provider: ServiceProvider | ServiceProviderConstructor): boolean
+
+    /**
+     * Get the service providers that are registered
+     * 
+     * @returns {ServiceProvider[]}
+     */
+    get registered(): ServiceProvider[];
+
+    /**
+     * Boot given service provider
+     * 
+     * @param {ServiceProvider} provider
+     * 
+     * @returns {Promise<boolean>} False if provider has already been booted
+     * 
+     * @async
+     */
+    boot(provider: ServiceProvider): Promise<boolean>;
+
+    /**
+     * Boots all given service providers
+     * 
+     * **Note**: _Method skips providers that have already been booted!_
+     * 
+     * @param {ServiceProvider[]} providers
+     * 
+     * @returns {Promise<boolean>}
+     * 
+     * @async
+     */
+    bootMultiple(providers: ServiceProvider[]): Promise<boolean>;
+
+    /**
+     * Determine if service provider has already been booted
+     * 
+     * @param {ServiceProvider} provider
+     * 
+     * @returns {boolean}
+     */
+    hasBooted(provider: ServiceProvider): boolean;
+
+    /**
+     * Get the service providers that have been booted
+     * 
+     * @returns {ServiceProvider[]}
+     */
+    get booted(): ServiceProvider[];
+
+    /**
+     * Resolves service provider
+     * 
+     * @param {ServiceProvider | ServiceProviderConstructor} provider
+     * 
+     * @returns {ServiceProvider} Resolved service provider instance
+     * 
+     * @throws {RegistrationException}
+     */
+    resolveProvider(provider: ServiceProvider | ServiceProviderConstructor): ServiceProvider;
+}
\ No newline at end of file
diff --git a/packages/contracts/src/support/services/index.ts b/packages/contracts/src/support/services/index.ts
index 2e354da3..45e056f6 100644
--- a/packages/contracts/src/support/services/index.ts
+++ b/packages/contracts/src/support/services/index.ts
@@ -5,9 +5,11 @@
  */
 export const SUPPORT_SERVICES: unique symbol = Symbol('@aedart/contracts/support/services');
 
+import Registrar from "./Registrar";
 import ServiceProvider from "./ServiceProvider";
 import ServiceProviderConstructor from "./ServiceProviderConstructor";
 export {
+    type Registrar,
     type ServiceProvider,
     type ServiceProviderConstructor,
 }