Resolve Discord-Tag get Discord-ID programmatically - api

Question

I want to add a function to my userprofiles where users can enter their discord tag and if they do so, I want to resolve this to a link to their discordprofile so that users only have to click on the discordtag to open the profile in discord.
For that I need the ID. What Request do I need to send to the discord api in order to get the user ID for the entered tag?

Answer 1

After some experiments with discord friend sending. I found out that you can actually obtain user the user ID by sending friend request.
Here's how:
Make a add request friend request to example#1234
Make another request to the relationship(AKA friend) list to get all pending "friends" with ID, username, avatar... This list actually contains all of the actual friends from the person that sent a friend request.
To find the requested username in the friend list, all you need is a loop searching for the corresponding username + discriminator.
Output the ID(if that's what you wanted), after the username and discriminator match.
Delete the pending request.
Here's a python script I wrote that will output the ID of the user with inputs of username, discriminator, and an user token(used for sending an authorized friend request):
import requests
import json
# inputs
username = 'asdf'
discriminator = '1234'
TOKEN = 'ONLY USER TOKEN'
url = 'https://discord.com/api/v8/users/#me/relationships'
headers = {
"authorization": TOKEN
}
# setting up a payload for sending friend request.
payload = {
'username': username,
'discriminator': discriminator
}
requests.post(url, json=payload, headers=headers) # step 1
result = requests.get(url, headers=headers).json() # step 2
if hasattr(result, 'message'):
print('Invalid user token')
else:
user_id = None
for client in result: # step 3: a loop for finding the the username in the friend list
if f'{client["user"]["username"]}#{client["user"]["discriminator"]}' == f'{username}#{discriminator}':
user_id = client['id'] # step 4: save the user ID after finding it in the friend list
break
if user_id is None: # if no match is found then the user with that username and discriminator does not exist.
print('user not found')
else:
url = f'https://discord.com/api/v8/users/#me/relationships/{user_id}'
requests.delete(url, headers=headers) # step 5: delete the pending request
print(user_id) # print out the user ID
And here's the data structure of the requested json from step 2:
[
{
"id": "12345678901",
"type": 1,
"nickname": null,
"user": {
"id": "12345678901",
"username": "example1",
"avatar": "1234567890abcdef",
"discriminator": "1234",
"public_flags": 123
}
},
{
"id": "12345678902",
"type": 1,
"nickname": null,
"user": {
"id": "12345678902",
"username": "example2",
"avatar": "1234567890abcdef",
"discriminator": "1234",
"public_flags": 123
}
},
{
"id": "12345678903",
"type": 1,
"nickname": null,
"user": {
"id": "12345678903",
"username": "example3",
"avatar": "1234567890abcdef",
"discriminator": "1234",
"public_flags": 123
}
}
]
Downside:
You have to use an user token for sending the friend request.
Updates:
10/4/2020: Added in error detection for invalid token and invalid username.