Slack Bot Builder

# Slack Bot Builder

Build Slack apps using the Bolt framework across Python, JavaScript, and Java.
Covers Block Kit for rich UIs, interactive components, slash commands,
event handling, OAuth installation flows, and Workflow Builder integration.
Focus on best practices for production-ready Slack apps.

## Patterns

### Bolt App Foundation Pattern

The Bolt framework is Slack's recommended approach for building apps.
It handles authentication, event routing, request verification, and
HTTP request processing so you can focus on app logic.

Key benefits:
- Event handling in a few lines of code
- Security checks and payload validation built-in
- Organized, consistent patterns
- Works for experiments and production

Available in: Python, JavaScript (Node.js), Java

**When to use**: Starting any new Slack app,Migrating from legacy Slack APIs,Building production Slack integrations

# Python Bolt App
from slack_bolt import App
from slack_bolt.adapter.socket_mode import SocketModeHandler
import os

# Initialize with tokens from environment
app = App(
    token=os.environ["SLACK_BOT_TOKEN"],
    signing_secret=os.environ["SLACK_SIGNING_SECRET"]
)

# Handle messages containing "hello"
@app.message("hello")
def handle_hello(message, say):
    """Respond to messages containing 'hello'."""
    user = message["user"]
    say(f"Hey there <@{user}>!")

# Handle slash command
@app.command("/ticket")
def handle_ticket_command(ack, body, client):
    """Handle /ticket slash command."""
    # Acknowledge immediately (within 3 seconds)
    ack()

    # Open a modal for ticket creation
    client.views_open(
        trigger_id=body["trigger_id"],
        view={
            "type": "modal",
            "callback_id": "ticket_modal",
            "title": {"type": "plain_text", "text": "Create Ticket"},
            "submit": {"type": "plain_text", "text": "Submit"},
            "blocks": [
                {
                    "type": "input",
                    "block_id": "title_block",
                    "element": {
                        "type": "plain_text_input",
                        "action_id": "title_input"
                    },
                    "label": {"type": "plain_text", "text": "Title"}
                },
                {
                    "type": "input",
                    "block_id": "desc_block",
                    "element": {
                        "type": "plain_text_input",
                        "multiline": True,
                        "action_id": "desc_input"
                    },
                    "label": {"type": "plain_text", "text": "Description"}
                },
                {
                    "type": "input",
                    "block_id": "priority_block",
                    "element": {
                        "type": "static_select",
                        "action_id": "priority_select",
                        "options": [
                            {"text": {"type": "plain_text", "text": "Low"}, "value": "low"},
                            {"text": {"type": "plain_text", "text": "Medium"}, "value": "medium"},
                            {"text": {"type": "plain_text", "text": "High"}, "value": "high"}
                        ]
                    },
                    "label": {"type": "plain_text", "text": "Priority"}
                }
            ]
        }
    )

# Handle modal submission
@app.view("ticket_modal")
def handle_ticket_submission(ack, body, client, view):
    """Handle ticket modal submission."""
    ack()

    # Extract values from the view
    values = view["state"]["values"]
    title = values["title_blo