README.md

Teller Widget

Welcome to the Teller Widget! This widget allows any dapp to integrate Teller's front end into their app and allow users to do cash advances with either the tokens in their wallets or a specified token list. Please note that a subgraph studio api key is required to use the widget. Please refer below for instructions.

Documentation

• Getting started
• API reference
• Interactive sandbox

Required packages

 @tanstack/react-query
 alchemy-sdk
 graphql
 graphql-request
 react
 react-dom
 @teller-protocol/v2-contracts

Installation

Install the widget (and required packages) by using npm or yarn

yarn add @teller-protocol/teller-widget @tanstack/react-query alchemy-sdk graphql graphql-request react react-dom @teller-protocol/v2-contracts

npm i --save @teller-protocol/teller-widget @tanstack/react-query alchemy-sdk graphql graphql-request react react-dom @teller-protocol/v2-contracts

Getting a subgraph studio api key

Please refer to this guide

Usage

To use the widget, import the TellerWidget component. None of the props are required.

import { Widget as TellerWidget } from "@teller-protocol/teller-widget";

const App = () => {
  return <TellerWidget />;
};

Props

The widget works out of the box with no configuration. However, you can pass in the following props to customize the widget.

subgraphApiKey

A mandatory api key to be able to use our subpgrah.

import { Widget as TellerWidget } from "@teller-protocol/teller-widget";

const App = () => {
  return <TellerWidget subgraphApiKey="xxxxx" />;
};

buttonLabel

A string to replace the default Cash Advance button label.

import { Widget as TellerWidget } from "@teller-protocol/teller-widget";

const App = () => {
  return <TellerWidget buttonLabel="Get a loan now!" />;
};

whitelistedTokens

An object grouped by chainId, made up of a list of token addresses. By default these tokens show on additionally to the ones in the user's wallet.

import { Widget as TellerWidget } from "@teller-protocol/teller-widget";

const whiteListedTokens = {
  [137]: [
    "0x61299774020da444af134c82fa83e3810b309991",
    "0x692ac1e363ae34b6b489148152b12e2785a3d8d6",
  ],
  [1]: ["0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2"],
};

const App = () => {
  return <TellerWidget whiteListedTokens={whiteListedTokens} />;
};

showOnlyWhitelistedTokens

A boolen to only show the tokens defined in the whitelistedTokens prop. Must be used together with the whitelistedTokens prop.

import { Widget as TellerWidget } from "@teller-protocol/teller-widget";

const whiteListedTokens = {
  [137]: [
    "0x61299774020da444af134c82fa83e3810b309991",
    "0x692ac1e363ae34b6b489148152b12e2785a3d8d6",
  ],
  [1]: ["0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2"],
};

const App = () => {
  return (
    <TellerWidget
      whiteListedTokens={whiteListedTokens}
      showOnlyWhitelistedTokens
    />
  );
};

buttonColorPrimary

A string to change the background color for the primary button. Must be in hex format, including the #, ie #ffffff

import { Widget as TellerWidget } from "@teller-protocol/teller-widget";

const App = () => {
  return <TellerWidget buttonColorPrimary="#000000" />;
};

buttonTextColorPrimary

A string to change the text color for the primary button. Must be in hex format, including the #, ie #ffffff

import { Widget as TellerWidget } from "@teller-protocol/teller-widget";

const App = () => {
  return <TellerWidget buttonTextColorPrimary="#ffffff" />;
};

buttonClassName

A string to be passed to the main button for adding a css class. Use this for customizing the button to match your app's design.

import { Widget as TellerWidget } from "@teller-protocol/teller-widget";

const App = () => {
  return <TellerWidget buttonClassName="button-v2" />;
};

isButtonBare

A boolean for additional styling control. This resets the buttons's style to the browser's default.

import { Widget as TellerWidget } from "@teller-protocol/teller-widget";

const App = () => {
  return <TellerWidget buttonClassName="button-v2" isButtonBare />;
};

whitelistedChains

An optional array to show desired chains. By default, the widget shows all chains. Available chains:

• 1 (Ethereum),
• 137 (Polygon)
• 42161 (Arbitrum)
• 8453 (Base)

import { Widget as TellerWidget } from "@teller-protocol/teller-widget";

const App = () => {
  return <TellerWidget whitelistedChains={[1, 137]} />;
};

referralFee

A number to set the referral fee %, passed in basis points. For example, 100 = 1%, max 500 = 5%. Note, referral fee on rollover loans is capped at 5% of the original loan repayment.

import { Widget as TellerWidget } from "@teller-protocol/teller-widget";

const App = () => {
  return <TellerWidget referralFee={100} />;
};

referralAddress

A string to set the widget host wallet address, which receives the referral fee.

import { Widget as TellerWidget } from "@teller-protocol/teller-widget";

const App = () => {
  return <TellerWidget referralAddress={"0x..."} />;
};

welcomeScreenLogo

A string, of an image URL, to set as the widget host logo on the widget welcome screen. This is displayed on the widget's welcome screen. Must include the "https://" and image file ending. Image types include .png, .jpg, .jpeg, .svg.

import { Widget as TellerWidget } from "@teller-protocol/teller-widget";

const App = () => {
  return <TellerWidget welcomeScreenLogo={"https://img-url.png"} />;
};

welcomeScreenTitle

A string which sets the bold, header text on the widget's welcome screen.

import { Widget as TellerWidget } from "@teller-protocol/teller-widget";

const App = () => {
  return <TellerWidget welcomeScreenTitle={"DeFi's cash advance"} />;
};

welcomeScreenParagraph

A string which sets the body, paragraph text on the widget's welcome screen.

import { Widget as TellerWidget } from "@teller-protocol/teller-widget";

const App = () => {
  return (
    <TellerWidget
      welcomeScreenParagraph={
        "Time-based loans, up to thirty days, with no margin-call liquidations."
      }
    />
  );
};

Development

Testing

Run storybook by doing

yarn storybook