venmo4js v0.0.6
venmo4js
A NodeJS wrapper for the Venmo API
Installation
npm i venmo4js
Usage
Setup
Retrieve an instance of the Venmo class
const { Venmo } = require('venmo4js');
let venmo = Venmo.getInstance();
...
Authentication
Venmo.loginUsernamePassword(username, password, device_id, client_id)
This method allows us to retrive an access token that can be used throughout the authenticated api calls. Generally this will require two factor authentication. If this is the case, expect an error like this:
{
error: {
message: "Additional authentication is required",
title: "Error'",
code: 81109,
url: "https://venmo.com/two-factor",
links: null
},
venmo_otp: "required; two_factor",
venmo_otp_secret: "<ONE-TIME-SECRET>",
device_id: "<DEVICE_ID>"
}
Venmo.sendTextForOneTimePassword(device_id, otp_secret)
Allows us to send an SMS text message to retrieve a one time token. To call this function we need to get the venmo_otp_secret
from Venmo.loginUsernamePassword
and pass it into Venmo.loginOneTimePassword
along with the token in the text message (otp).
Venmo.loginOneTimePassword(device_id, otp, otp_secret, client_id)
Most venmo accounts require two factor authentication. This method allows us to use a token gotten from SMS to login and get an access token.
{
expires_in: 0,
balance: 0,
user: {
is_group: false,
identity: null,
is_venmo_team: false,
friends_count: 1,
profile_picture_url: '',
email: '',
last_name: '',
first_name: '',
id: '',
is_payable: true,
friend_status: null,
display_name: '',
is_active: true,
about: ' ',
trust_request: null,
identity_type: 'personal',
date_joined: '2016-09-30T23:54:35',
audience: 'public',
username: '',
phone: '',
is_blocked: false
},
token_type: 'bearer',
access_token: '',
refresh_token: ''
}
Venmo.logout(access_token)
Revokes the access token from the user so it can no longer be used for authenticated API calls.
User Information
Venmo.fetchFriends(user_id, access_token)
Retrieves the list of friends for a given user
Transactions
Venmo.fetchTransaction(transactionID, access_token)
{
data: {
comments: { data: [], count: 0 },
type: 'payment',
transaction_external_id: '',
authorization: null,
id: '',
payment: {
external_wallet_payment_info: null,
action: '',
audience: 'public',
target: [Object],
status: 'settled',
amount: 100,
date_authorized: null,
id: '',
date_created: '',
note: 'Pasta',
date_completed: '',
date_reminded: null,
merchant_split_purchase: null,
actor: [Object]
},
date_created: '',
note: 'Pasta',
likes: { data: [], count: 0 },
mentions: { data: [], count: 0 },
allow_user_add_comment: true,
date_updated: '',
transfer: null,
app: {
description: 'Venmo for iPhone',
image_url: '',
id: 1,
name: 'Venmo for iPhone',
site_url: null
},
audience: 'public'
}
}
Payments
Venmo.requestPayment(amount, target_user_name, note, access_token, is_private)
Requests money from a targeted user.
{
data: {
payment_token: null,
payment: {
amount: 0.01,
target: [Object],
date_reminded: null,
refund: null,
external_wallet_payment_info: null,
date_created: '',
medium: 'Venmo for iPhone',
date_completed: null,
id: '',
action: 'charge',
status: 'pending',
fee: null,
date_authorized: null,
audience: 'private',
note: 'This is a test',
actor: [Object]
},
balance: '0.00'
}
}
Errors
Errors will be thrown if there are invalid credentials (or not passed), or if you hit Venmo's rate limit.
Example
Authentication Example:
const { Venmo } = require("venmo4js");
function fetchOneTimePasswordTokenSMS() {
let query = "Please enter your Venmo authentication token (SMS):";
const rl = readline.createInterface({
input: process.stdin,
output: process.stdout,
});
return new Promise((resolve) =>
rl.question(query, (ans) => {
rl.close();
resolve(ans.trim());
})
);
}
let venmo = Venmo.getInstance();
const loginExample = async () => {
let client_id = "1";
let device_id = "99999999999999999999999";
let user_name = "<ENTER_USER_NAME>";
let password = "<ENTER_PASSWORD>";
let res = await venmo.loginUsernamePassword(
user_name,
password,
device_id,
client_id
);
// if two factor authentication is enabled for user
if (res.data.error && res.headers.venmo_otp_secret) {
const text = await venmo.sendTextForOneTimePassword(
device_id,
res.headers.venmo_otp_secret
);
console.log(text);
let user_otp = await fetchOneTimePasswordTokenSMS();
res = await venmo.loginOneTimePassword(
res.headers.venmo_otp_secret,
user_otp,
device_id,
client_id
);
}
console.log(res);
};
loginExample();
Request Payment Example:
const { Venmo } = require("venmo4js");
let venmo = Venmo.getInstance();
const requestPaymentExample = async () => {
const friend_user_name = "<ENTER_USER_NAME>";
const access_token = "<ENTER_ACCESS_TOKEN>";
const note = "This is a tiny description";
// Determines who can view that this payment request has occurred
const is_private = true;
// IMPORTANT: Curretly there are safe gaurds to only allow requesting a payment between 0 and 100 dollars
// Requesting payments requires a negative number to be entered
// Sending payments requires a positive number.. this implementation does not support sending payments but its
// simple to modify
const amount = -1;
const user_details = await venmo.fetchUserDetails(user_name, access_token);
console.log(user_details);
const requestPayment = await venmo.requestPayment(
amount,
friend_user_name,
note,
access_token,
is_private
);
console.log(requestPayment);
};
requestPaymentExample();
Fetch Friends Example:
const { Venmo } = require("venmo4js");
const fetchFriendsExample = async () => {
const user_id = "<ENTER_USER_ID>";
const access_token = "<ENTER_ACCESS_TOKEN>";
const friends = await venmo.fetchFriends(user_id, access_token);
console.log(friends);
};
fetchFriendsExample();
Fetch User Details Example:
const { Venmo } = require("venmo4js");
const fetchUserDetailsExample = async () => {
const user_name = "<ENTER_USER_NAME>";
const access_token = "<ENTER_ACCESS_TOKEN>";
const user_details = await venmo.fetchUserDetails(user_name, access_token);
console.log(user_details);
};
fetchUserDetailsExample();