> ## Documentation Index
> Fetch the complete documentation index at: https://docs.genlabs.co/llms.txt
> Use this file to discover all available pages before exploring further.

# U128String

> **U128String** = `string` & `object`

Defined in: [metacomputer/gen-framework/client-and-test-utils/client-sdk-ts/packages/client-sdk/src/rpc-types/types.ts:312](https://github.com/gen-bc/gen/blob/main/metacomputer/gen-framework/client-and-test-utils/client-sdk-ts/packages/client-sdk/src/rpc-types/types.ts#L312)

A u128 value serialized as a decimal string to preserve precision.

## Type Declaration

### \_\_brand

> `readonly` **\_\_brand**: `"U128String"`