Technical Reference

API Reference

MiniKit introduces a new api for verifying transactions.

Get Transaction

GEThttps://developer.worldcoin.org/api/v2/minikit/transaction/{transaction_id}?app_id=&type=

This endpoint lets you query your apps transactions for their current status. You will only be able to query for transactions of apps where you possess the api_key.

Query Params

Name
app_id
Type
string
Required
REQUIRED
Description
The app_id corresponding to the transaction that is being queried.
Name
type
Type
string
Required
REQUIRED
Description
The type is either payment (pay) or transaction (sendTransaction) depending on the command you used.

Request Headers

Name
Authorization
Type
string
Required
REQUIRED
Description
The Authorization header should be the api_key for your app from the Developer Portal. Make sure to prefix it with Bearer {api_key}.

Request

GET

/api/v2/minikit/transaction/{transaction_id}

curl -X GET "/api/v2/minikit/transaction/{transaction_id}" \
    -H "Authorization: Bearer {api_key}"

Response

Name
reference
Type
string
Description
The reference is your specified unique identifier for the transaction.
Name
transaction_hash
Type
string
Description
The transaction_hash is the hash of the transaction on the blockchain.
Name
transaction_status
Type
string
Description
The current transaction_status, can be either 'pending', 'mined', or 'failed'.
Name
from
Type
string
Description
The from is the address of the sender.
Name
chain
Type
string
Description
The chain is the name of the blockchain network.
Name
timestamp
Type
string
Description
The timestamp is the time when the transaction was created, in ISO 8601 format.
Name
token_amount
Type
string
Description
The token_amount is the amount of tokens transferred, in BigInt with 6 decimals.
Name
token
Type
string
Description
The token is the type of token transferred.
Name
to
Type
string
Description
The to is the address of the receiver.
Name
app_id
Type
string
Description
The app_id is the identifier of the app initiating the transaction.

Response

GET

/api/v2/minikit/transaction/{transaction_id}

{
    "reference": "1fa38f30-8ee1-4e4b-9988-0517a774f96c",
    "transaction_hash": "0xfb25cb74b13d51deeb1a91460619c3d86a7637d40dd29831aa38dd6cbb05e880",
    "transaction_status": "pending | mined | failed",
    "from": "0x0c892815f0B058E69987920A23FBb33c834289cf",
    "chain": "worldchain",
    "timestamp": "2024-01-01T00:00:00.000Z", // ISO 8601
    "token_amount": "100000000", // amount in BigInt with 6 decimals
    "token": "USDCE",
    "to": "0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045",
    "app_id": "app_9a73963d73efdf2e7d9472593dc9dffd"
}

Get Prices

GEThttps://app-backend.worldcoin.dev/public/v1/miniapps/prices?cryptoCurrencies=WLD,USDCE&fiatCurrencies=

This endpoint lets you query the latest prices of the Worldcoin token in various fiat currencies. We offer this as a service to make it easier to use WLD as a currency.

Query Params

Name
fiatCurrencies
Type
string
Required
REQUIRED
Description
The fiatCurrencies is a comma-separated list of fiat currencies following ISO4217 currency code. eg. USD,EUR,JPY,ARS

Name
cryptoCurrencies
Type
string
Required
REQUIRED
Description
The cryptoCurrencies is a comma-separated list of currencies we support. eg. USDCE,WLD

Request

GET

/public/v1/miniapps/prices?...

curl -X GET "https://app-backend.worldcoin.dev/public/v1/prices?cryptoCurrencies=WLD&fiatCurrencies=USD"

Response (abridged)

Detailed are a just a few values in the return that could be confusing. See the response object in the bottom right column for the full list of fields

Name
prices
Type
string
Description
The prices is an object where each key is the respective currency code
Name
amount
Type
string
Description
The amount represents the non converted value for the price of 1 WLD for a given currency
Name
decimals
Type
string
Description
The current decimals, should be used to calculate the converted price. ie an amount of 1000000 with 6 decimals would mean a price of $1.00 via, 1000000 * 10^-6

Response

GET

/public/v1/miniapps/prices?...

{
    "result": {
        "prices": {
            "WLD": {
                "USD": {
                    "asset": "USD",
                    "amount": "1510763",
                    "decimals": 6,
                    "symbol": "USD"
                },
            },
            "USDCE": {
                "USD": {
                    "asset": "USD",
                    "amount": "1000058",
                    "decimals": 6,
                    "symbol": "USD"
                },
            }
        }
    }
}

Usernames are ENS-compatible identifiers for every World App user, ensuring consistency and easy recognition. For example, when displaying transaction history, show the username instead of the wallet address to make it more user-friendly and private. For implementation details, refer to the documentation World Usernames Documentation.