diff --git a/dist/fastify.d.ts b/dist/fastify.d.ts
index 3e709c7..c8f52b9 100644
--- a/dist/fastify.d.ts
+++ b/dist/fastify.d.ts
@@ -3,9 +3,10 @@ export type ServiceResult<T = unknown> = {
     result: T;
     successful: boolean;
 };
-export type API_Error = {
+export declare class API_Error {
     error: string;
-};
+    constructor(error: string);
+}
 export declare abstract class BaseClient {
     private axiosInstance;
     constructor(axiosInstance: AxiosInstance);
diff --git a/dist/fastify.d.ts.map b/dist/fastify.d.ts.map
index 8b4d133..0c57947 100644
--- a/dist/fastify.d.ts.map
+++ b/dist/fastify.d.ts.map
@@ -1 +1 @@
-{"version":3,"file":"fastify.d.ts","sourceRoot":"","sources":["../src/fastify.ts"],"names":[],"mappings":"AAAA,OAAO,KAAK,EAAE,aAAa,EAAE,MAAM,OAAO,CAAC;AAE3C,MAAM,MAAM,aAAa,CAAC,CAAC,GAAG,OAAO,IAAI;IACvC,MAAM,EAAE,CAAC,CAAC;IACV,UAAU,EAAE,OAAO,CAAC;CACrB,CAAC;AAEF,MAAM,MAAM,SAAS,GAAG;IACtB,KAAK,EAAE,MAAM,CAAC;CACf,CAAC;AAEF,8BAAsB,UAAU;IAC9B,OAAO,CAAC,aAAa,CAAgB;gBAEzB,aAAa,EAAE,aAAa;IAIxC,QAAQ,IAAI,aAAa;CAG1B;AAED,8BAAsB,WAAW,CAAC,CAAC;IACjC,OAAO,CAAC,MAAM,CAAI;gBAEN,MAAM,EAAE,CAAC;IAIrB,SAAS,IAAI,CAAC;IAId,mBAAmB,CAAC,CAAC,GAAG,OAAO,EAAE,MAAM,EAAE,CAAC,GAAG,aAAa,CAAC,CAAC,CAAC;IAO7D,cAAc,CAAC,KAAK,EAAE,MAAM,GAAG,aAAa,CAAC,MAAM,CAAC;CAMrD"}
\ No newline at end of file
+{"version":3,"file":"fastify.d.ts","sourceRoot":"","sources":["../src/fastify.ts"],"names":[],"mappings":"AAAA,OAAO,KAAK,EAAE,aAAa,EAAE,MAAM,OAAO,CAAC;AAE3C,MAAM,MAAM,aAAa,CAAC,CAAC,GAAG,OAAO,IAAI;IACvC,MAAM,EAAE,CAAC,CAAC;IACV,UAAU,EAAE,OAAO,CAAC;CACrB,CAAC;AAEF,qBAAa,SAAS;IACD,KAAK,EAAE,MAAM;gBAAb,KAAK,EAAE,MAAM;CACjC;AAED,8BAAsB,UAAU;IAC9B,OAAO,CAAC,aAAa,CAAgB;gBAEzB,aAAa,EAAE,aAAa;IAIxC,QAAQ,IAAI,aAAa;CAG1B;AAED,8BAAsB,WAAW,CAAC,CAAC;IACjC,OAAO,CAAC,MAAM,CAAI;gBAEN,MAAM,EAAE,CAAC;IAIrB,SAAS,IAAI,CAAC;IAId,mBAAmB,CAAC,CAAC,GAAG,OAAO,EAAE,MAAM,EAAE,CAAC,GAAG,aAAa,CAAC,CAAC,CAAC;IAO7D,cAAc,CAAC,KAAK,EAAE,MAAM,GAAG,aAAa,CAAC,MAAM,CAAC;CAMrD"}
\ No newline at end of file
diff --git a/dist/fastify.js b/dist/fastify.js
index 48dd7e5..affa020 100644
--- a/dist/fastify.js
+++ b/dist/fastify.js
@@ -1,3 +1,9 @@
+export class API_Error {
+    error;
+    constructor(error) {
+        this.error = error;
+    }
+}
 export class BaseClient {
     axiosInstance;
     constructor(axiosInstance) {