How to Set up a HTTP Endpoint for Your Python Discord Bot

Important!

Every programming language has its own web framework; for example, Flask is commonly used with Python.

Note:

The following Python modules are libraries we use in Python. Similar libraries can also be installed in other popular languages like JavaScript, PHP, Ruby, Rust, Go, and Java/JVM to do the same kinds of jobs.

Setting up an HTTP Endpoint is how your Discord bot gets a public internet address to receive special data directly from Discord. This is essential for features like Slash Commands and message Buttons, giving Discord a secure place to send instructions when users interact with your bot.

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Packages:

• discord.py: Z Python library for building bots and interacting with the Discord API using commands and events.
• Flask: Used to create the minimal web server and define the /interactions endpoint.
• PyNaCl: Used to handle cryptographic tasks, specifically verifying the security signatures from Discord.

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Getting a Discord Public Key:

1. Log In to the Discord Developer Portal
2. Select your application
3. Scroll to “PUBLIC KEY” then select the ‘Copy’ button

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1. Log In to Your Panel

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2. Select the ‘Files’ Tab

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3. Create index.py

This file will create a web server (using Flask) and handles the Discord security check and the PING/PONG test.

Paste the following code into the file:

import os
from flask import Flask, request, jsonify, abort
from nacl.signing import VerifyKey
from nacl.exceptions import BadSignatureError

PUBLIC_KEY = "YOUR_DISCORD_PUBLIC_KEY_HERE"
verify_key = VerifyKey(bytes.fromhex(PUBLIC_KEY))
app = Flask(__name__)

@app.route('/interactions', methods=['POST'])
def discord_interactions():
    signature = request.headers.get('X-Signature-Ed25519')
    timestamp = request.headers.get('X-Signature-Timestamp')
    body = request.data.decode('utf-8')

    try:
        verify_key.verify(f'{timestamp}{body}'.encode(), bytes.fromhex(signature))
    except BadSignatureError:
        abort(401) 

    data = request.json
    if data and data.get("type") == 1:
        return jsonify({"type": 1}) 

    return jsonify({"type": 4, "data": {"content": "Command received!"}}) 
if __name__ == '__main__':
    app.run(host='0.0.0.0', port=8000)

Ensure that the port number is the same as your server’s port.

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4. Get your Public URL and Register in Discord

Once you’ve hosted your web server, ensure your web server must be running on https not http.

1. Copy https://example.com/interaction
2. Go back to the Discord Developer Portal, then your application.
3. Paste your copied URL into the “INTERACTIONS ENDPOINT URL” then save changes

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