diff --git a/verror/index.d.ts b/verror/index.d.ts
index 2c88ddb8e8..7b827b653d 100644
--- a/verror/index.d.ts
+++ b/verror/index.d.ts
@@ -4,6 +4,15 @@
 // Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
 
 
+type VErrorInfo = { [key: string]: any };
+
+declare interface VErrorOptions {
+    cause: Error;
+    name?: string;
+    strict?: boolean;
+    constructorOpt?: Function;
+    info?: VErrorInfo;
+}
 
 /*
  * VError([cause], fmt[, arg...]): Like JavaScript's built-in Error class, but
@@ -24,7 +33,14 @@ declare class VError extends Error {
     static SError: typeof SError;
     static MultiError: typeof MultiError;
     static WError: typeof WError;
-    cause(): Error;
+
+    static cause(err: Error): Error | null;
+    static info(err: Error): VErrorInfo;
+    static findCauseByName(err: Error, name: string): Error | null;
+    static fullStack(err: Error): string;
+
+    cause(): Error | undefined;
+    constructor(options: VErrorOptions, message: string, ...params: any[]);
     constructor(cause: Error, message: string, ...params: any[]);
     constructor(message: string, ...params: any[]);
 }
@@ -46,6 +62,7 @@ declare class SError extends VError {
  */
 declare class MultiError extends VError {
     constructor(errors: Error[]);
+    errors(): Error[];
 }
 
 /*
diff --git a/verror/verror-tests.ts b/verror/verror-tests.ts
index 1be9837645..0c386987c1 100644
--- a/verror/verror-tests.ts
+++ b/verror/verror-tests.ts
@@ -13,5 +13,19 @@ var serror = new VError.SError(error, "bar");
 var multiError = new VError.MultiError([verror1, verror2]);
 var werror = new VError.WError(verror1, "foobar");
 
+var verror3 = new VError({
+    name: "fooError",
+    cause: error,
+    info: {
+        "info0": "baz"
+    }
+}, "bar");
+
 var cause1: Error = verror1.cause();
 var cause2: Error = werror.cause();
+
+const info: { [k: string]: any } = VError.info(verror3);
+const namedCause: Error | null = VError.findCauseByName(verror3, "fooError");
+const stack: string = VError.fullStack(verror3);
+const cause3: Error | null = VError.cause(verror3);
+