Automate Financial Alerts: Integrating Stripe and Slack in Minutes

In a fast-moving business, real-time visibility into financial activity isn't a luxury—it's a necessity. Manually checking your payment gateway for new sales, failed charges, or disputes is inefficient and prone to human error. You need instant notifications delivered right to your team's workspace.

This post will show you how to build a robust financial alert system by integrating Stripe and Slack. But we're not going to use clumsy webhook configurations or rigid, UI-based automation tools. Instead, we'll use Integrations.do to create a powerful, scalable workflow as simple, clean code. In minutes, you'll be able to send custom alerts from Stripe directly to a Slack channel.

The Old Way vs. The "Business-as-Code" Way

Traditionally, connecting two powerful platforms like Stripe and Slack involved a few frustrating options:

• Manual Webhook Management: You'd write custom endpoint code to receive Stripe webhooks, parse the data, handle authentication with Slack's API, and manage the message posting logic. This is brittle, requires significant boilerplate, and becomes a maintenance nightmare.
• Traditional iPaaS Solutions: You'd drag-and-drop components in a graphical interface. While seemingly simple for one-off tasks, these tools lock your business logic into a proprietary UI, making it difficult to version control, test, and integrate into a modern CI/CD pipeline.
• Building from Scratch: You'd use SDKs for both platforms, but you're still left to write all the glue code, including complex OAuth 2.0 flows, token refresh logic, error handling, and retry mechanisms.

Integrations.do introduces a new paradigm: Integrations as Code. We believe critical business logic should be as robust, versionable, and scalable as your application code. Our agentic workflow platform lets you connect to any API as a simple function call, transforming complex integrations into simple, reusable services.

Step-by-Step: Build a Stripe-to-Slack Workflow with Integrations.do

Let's build a workflow that automatically posts a message to a #sales-alerts channel in Slack every time a successful charge occurs in Stripe.

Step 1: Set Up Your Environment

Getting started is as simple as installing our SDK.

npm install @do-sdk/client

This client library is your gateway to accessing any connected system.

Step 2: Connect Your Accounts in Integrations.do

This is where the magic happens. Instead of wrestling with Bearer tokens and OAuth redirects in your code, you connect your Stripe and Slack accounts once through the secure Integrations.do dashboard. Our platform handles all the authentication complexities for you:

• Secure Credential Storage: API keys and secrets are encrypted and stored safely.
• Automatic Token Management: We handle OAuth 2.0 flows and automatically refresh tokens in the background, so your workflows never fail due to expired credentials.
• Agentic Authentication: Our agents securely inject the necessary authentication into every API call you make, keeping your code clean and focused on business logic.

Step 3: Write the Agentic Workflow as Code

Now, you write the logic. With Integrations.do, your workflow is a simple function. This function can be configured to trigger automatically when a specific event occurs, like a charge.succeeded webhook from Stripe.

Here’s the complete TypeScript code for our workflow:

import { Client } from '@do-sdk/client';

// This function is triggered by a Stripe webhook event (e.g., charge.succeeded).
// The `event` payload is passed directly from the webhook trigger you configure in Integrations.do.

export async function handleSuccessfulCharge(event: any) {
  // Initialize the .do client. 
  // No API key needed here; authentication is handled by the platform environment.
  const doClient = new Client();

  const charge = event.data.object;

  // Format the amount from cents to a currency string
  const amount = (charge.amount / 100).toFixed(2);
  const currency = charge.currency.toUpperCase();

  // Create a rich, formatted message for Slack
  const message = `🚀 New Sale!
• Customer: ${charge.billing_details.email}
• Amount: ${amount} ${currency}
• Description: ${charge.description || 'N/A'}
• View in Stripe: https://dashboard.stripe.com/payments/${charge.id}`;

  try {
    // Access the Slack integration as a simple function call
    await doClient.integrations.slack.postMessage({
      channel: '#sales-alerts', // Target a specific Slack channel
      text: message
    });
    console.log(`Alert for charge ${charge.id} sent to Slack.`);
  } catch (error) {
    console.error('Failed to send Slack alert:', error);
    // The Integrations.do platform can handle automated retries and error notifications
  }
}

Look at what this code doesn't have:

• No axios or fetch calls.
• No API key variables.
• No complex authentication logic.
• No manual JSON parsing for the webhook.

You simply call doClient.integrations.slack.postMessage() as if it were a local function.

Step 4: Deploy Your Workflow

Commit this code to your repository. By following the "Business-as-Code" philosophy, your integration logic is now:

• Version Controlled: Track changes, review pull requests, and roll back if needed.
• Reusable: This workflow is now a service you can call from other parts of your system.
• Scalable: Deployed on our platform, it can handle any volume of events Stripe throws at it.
• CI/CD Friendly: It fits perfectly into your existing development and deployment pipelines.

Why This is a Game-Changer for Workflow Automation

This approach fundamentally changes how you build and manage connections between systems.

1. Unmatched Speed: The entire process, from setup to deployment, takes minutes, not days.
2. Developer-First Experience: Write code in your favorite editor, use Git for versioning, and integrate with your CI/CD tools. No more clunky UIs.
3. Built-in Robustness: With authentication, retries, and error handling managed by the platform, your workflows are production-ready from day one.
4. Endless Possibilities: This pattern extends to any API. You can create custom integrations for proprietary systems or use our growing library of pre-built connectors. Imagine the possibilities:
   • Create a Jira issue from a new Zendesk ticket.
   • Enrich a new HubSpot lead with data from Clearbit.
   • Sync new GitHub commits to a project management tool like Asana.

Connect Any System, Today

Stop wrestling with APIs and gluing systems together with brittle scripts. Integrations.do provides the AI-powered, code-first platform to build the automated workflows your business needs.

Ready to transform complex integrations into simple, reusable services? Explore Integrations.do and get started for free!