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

# InterfaceAbi

```ts theme={null}
type InterfaceAbi: string | ReadonlyArray<Fragment | JsonFragment | string>;
```

An **InterfaceAbi** may be any supported ABI format.

A string is expected to be a JSON string, which will be parsed using `JSON.parse`. This means that the value **must**
be a valid JSON string, with no stray commas, etc.

An array may contain any combination of:

* Human-Readable fragments
* Parsed JSON fragment
* [**Fragment**](../classes/Fragment)

A **Human-Readable Fragment** is a string which resembles a Solidity signature and is introduced in [this blog
entry](lhttps://blog.ricmoo.com/human-readable-contract-abis-in-quais-js-141902f4d917). For example, `function
balanceOf(address) view returns (uint)`.

A **Parsed JSON Fragment** is a JavaScript Object desribed in the [Solidity
documentation](https://docs.soliditylang.org/en/v0.8.19/abi-spec.html#json).

## Source

[abi/interface.ts:298](https://github.com/dominant-strategies/quais.js/blob/c1c12d43f9d34c6baad2b0542bd6d0acd6fefcbf/src/abi/interface.ts#L298)