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This is endpoint returns an [unsigned transaction](/architecture/transaction-lifecycle) that pre-approves a `spender_address` account to transfer a specified amount of tokens from the `holder_address` account. Once you sign this transaction, using your private key held in your local environment variables, you can broadcast it using the [Execute Transaction](/api-reference/endpoint/transactions/post-transactionsexecute) endpoint; or if you prefer to wait for confirmation using the [Execute Transaction and Wait](/api-reference/endpoint/transactions/post-transactionsexecuteandwait) endpoint.

Create an allowance

Approve a spender account to transfer credits that belong to a holder account

ApiKeyAuth

We're building the decentralised framework to integrate **rewards**, **micro-transactions**, **revenue splitting** and **new business models** into your apps. 

Welcome

Why Decentralisation?

Who's it for?

Create your first OPENFORMAT App to starting rewarding your users with XP, Tokens and Badges.

Create Application

Get an API key to authenticate your user in our API.

Get an API key

Learn how to trigger your first reward with OPENFORMAT

Trigger your first Reward

Accounts & Profiles

How OPENFORMAT creates and broadcasts transactions

Transaction Lifecycle

Reading on-chain Data

Learn how to integrate your application with OPENFORMAT's webhook system to receive real-time notifications for specific events.

Real-time Notifications

In this page you will learn how to work with the the OPENFORMAT API

API Overview

Quickstart

Reward XP

Create Badge

Reward Badge

Use our React SDK to connect your users via a web3 wallet.

React

A full code example that generates an API key for a given Ethereum account.

Generate API Key

A full code example that rewards a given user 10 XP for completing an activity in an application.

A full code example that transfers a Credit token from a holder account to a receiver.

Credit Transfers with Permit

We've partnered with no-code and low-code stacks to make it as easy as possible for builders and developers to experiment with web3 technologies.

Explore our case studies to see how builders are using no-code tools combined with our onchain game mechanics to rapidly build prototypes and applications.

Case Studies

[BuildShip](https://buildship.com/) is a visual backend builder that lets you ship APIs, scheduled jobs, backend cloud functions instantly. You can use BuildShip with OPENFORMAT templates to create web3 apps fast. Get started with one of the templates below.

Overview

Creates a web3 account for your user. You can learn more about web3 accounts in [Accounts & Profiles](../../../functions/accounts-and-profiles) in the key concepts section.

Create web3 Account

Reward a user with experience points (XP) for completing an action.

Reward a user with a badge for completing an action or mission.

Returns the user's experience point (XP) balance, the badges they have collected and the actions they have completed within that specific dApp.

Get User Information

Returns a leaderboard based on the amount of experience points (XP) users have earned.

Get Leaderboard

Checks whether the user has completed all of the actions that make up a mission, and whether they have already been rewarded for completing the mission.

Check Missions

Reward your existing users with on-chain experience points (XP). This template handles the process of issuing XP directly to users based on their unique identifier, making it easy to integrate gamification into your existing application.

XP Rewards Integration

Create a leaderboard which includes the names and images of the users within your app, by linking to your database. This leaderboard is based off the amount of on-chain experience points (XP) the users have earned.

Leaderboard

Easily integrate location-based rewards into your app. This template verifies user presence at specific locations using a set of given coords and automatically issues on-chain badges to their web3 account. Perfect for gamification, enhancing user engagement, and promoting exploration.

Geolocation Reward

Verify on-chain whether a given web3 account holds a specific badge. It's ideal for both online and offline access control.

Badge Access Verifier

Calculate your users level and their progression towards the next level based on the on-chain experience points (XP) they have earned. The XP requirements for levelling can be customised to determine how quickly the user progresses.

Level Progression Tracker

Checks whether a user has completed all the actions that make up a mission, and if they have, it rewards them with the appropriate XP and badges.

Check and Reward Missions

Generate an API Key Challenge for an account. Once you've generate your challenge, you need to [verify](/api-reference/endpoint/api-key/post-keyverify) it.

Challenge

Verify your signed challenge. You can sign your challenge using Metamask and our [signing tool](https://openformat-tools.vercel.app/).

Challenge verification

Trigger XP in your application when a user completes a specific action, such as registering, completing a task, watching a video or posting a comment. This is endpoint returns an [unsigned transaction](/architecture/transaction-lifecycle), which can now be signed in your application using your private key held in your local environment variables. Once signed, you can broadcast it using the [Execute Transaction](/api-reference/endpoint/transactions/post-transactionsexecute) endpoint; or if you prefer to wait for confirmation using the [Execute Transaction and Wait](/api-reference/endpoint/transactions/post-transactionsexecuteandwait) endpoint.

Trigger a reward of a specific Credit token in your application. This is endpoint returns an [unsigned transaction](/architecture/transaction-lifecycle), which can be signed using your private key held in your local environment variables. Once signed, you can broadcast it using the [Execute Transaction](/api-reference/endpoint/transactions/post-transactionsexecute) endpoint; or if you prefer to wait for confirmation using the [Execute Transaction and Wait](/api-reference/endpoint/transactions/post-transactionsexecuteandwait) endpoint.

By default this operation transfers the rewarded tokens from the transaction sender account to the receiver account, this transfer is executed by the Application contract defined in `app_id` parameter. That means for the reward to succeed you should had previously created an allowance for the Application to transfer the required amount of tokens; you can do this using our [approve endpoint](/api-reference/endpoint/credit/post-creditapprove)

In case you want to mint the new tokens instead of transfer them you should set the optional parameter `mint` to `true`

Reward Credit

This is endpoint returns an [unsigned transaction](/architecture/transaction-lifecycle) that creates a new Credit token from the specified app. Once you sign this transaction, using your private key held in your local environment variables, you can broadcast it using the [Execute Transaction](/api-reference/endpoint/transactions/post-transactionsexecute) endpoint; or if you prefer to wait for confirmation using the [Execute Transaction and Wait](/api-reference/endpoint/transactions/post-transactionsexecuteandwait) endpoint.

Create Credit token

Show the Credit token balance of an account.

The returned response consists of 3 numbers:

- `balance` The absolute amount of tokens the user has.

- `decimals` The number of decimals defined in the Credit token.

- `balance_formatted` The user balance formatted to the token decimals. Example: for an balance of `1000000000000000000` with `18` decimals `balance_formatted` would be `1`. All token amount parameters in this API use this formatted mechanism.


Credit Balance

This endpoint returns the necessary data for a Credit token holder to create a permit signature. This permit is used to allow a third party to transfer tokens on behalf of the token holder. Once this permit is signed it is sent to the [Transfer Credit Token](/api-reference/endpoint/credit/post-credittransfer) endpoint to get a transfer transaction.

Request Permit Data

This is endpoint receives transfer information, a permit signature and returns an [unsigned transaction](/architecture/transaction-lifecycle) that executes the transfer. Permit data is obtained by calling the [Request Permit Data](/api-reference/endpoint/credit/post-creditpermitdata) endpoint and it is signed using the private key of the token holder. Transfer information needs to match the used to generate the permit. The unsigned transaction should be signed using your private key and can be broadcasted using [Execute Transaction](/api-reference/endpoint/transactions/post-transactionsexecute) or [Execute Transaction and Wait](/api-reference/endpoint/transactions/post-transactionsexecuteandwait) endpoints.

API Documentation

API Key

Rewards

Credit

Transactions

Profile

Leaderboard

Webhook

Webhook Secret

Create an allowance

Authorizations

Body

Response