Integrate Your Disparate Software with Custom APIs
Custom API development integrates disparate systems by creating a central hub for data translation. This hub listens for events in one system and triggers actions in another using code.
Syntora offers custom API development services to integrate disparate software systems for small to medium-sized businesses and consultancies. Their approach focuses on designing and implementing robust, scalable architectures using technologies like FastAPI and AWS Lambda. This ensures clients can streamline operations and improve data consistency across their technology stack.
The project scope for integrating software systems depends on the number of platforms involved and the complexity of the required business logic. For example, connecting a CRM to an accounting tool with a one-way data sync is generally more straightforward than integrating a warehouse management system, an e-commerce platform, and a financial tool with two-way inventory updates and conditional logic for refunds. Syntora specializes in designing and implementing these critical integration architectures.
What Problem Does This Solve?
Many teams try to connect their tools with point-to-point integration platforms. These platforms are great for simple triggers, like posting a Slack message when a HubSpot form is filled. But they become expensive and brittle when used for core business processes. A single e-commerce order might need to create an invoice in QuickBooks, update inventory in a 3PL system, and add the customer to Klaviyo. This requires a 3-step workflow that burns through tasks and your monthly budget.
A single failure in one of those steps can halt the entire process. Debugging involves digging through run logs to find which specific API call failed, often with cryptic error messages. The logic itself is also limited. A workflow that needs to check inventory in one system and a customer's credit status in another before creating an order often requires complex, branching paths that are difficult to maintain and reason about.
Native integrations built into SaaS tools are another common starting point. However, they are one-size-fits-all. The standard Shopify-to-QuickBooks connector might sync basic order data but will fail to handle bundled products, partial refunds, or custom order tags correctly. This forces teams to perform manual data reconciliation at the end of every month, defeating the purpose of the automation.
How Would Syntora Approach This?
Syntora would begin an engagement by performing a detailed discovery phase, mapping the exact data fields and API endpoints for each of your systems. This initial step is crucial for defining strict data schemas, typically using Python's Pydantic library, to ensure data consistency across platforms. For instance, an order from an e-commerce system would maintain the same structure as an invoice in your accounting software, preventing data corruption before any integration logic is written.
The core of the solution involves building a central API using FastAPI, designed to act as both a translator and a router for data flows. When an event occurs in one system, such as an order.created webhook from an e-commerce platform, the FastAPI endpoint would receive it. The API would then use httpx to make asynchronous, authenticated calls to your other systems, facilitating actions like creating an invoice in an accounting system or a fulfillment request in a warehouse management system. Syntora has extensive experience with similar data routing and transformation patterns across various backend services.
This FastAPI application would be deployed as a serverless function on AWS Lambda, an architecture choice that optimizes for scalability and cost-efficiency, typically keeping hosting expenses low. For robust data integrity and auditing, a Supabase Postgres database would log every transaction and its status. This provides an immediate, queryable audit trail for any issues and helps prevent duplicate data processing.
For proactive operational visibility, Syntora would configure AWS CloudWatch alarms. These alarms can be set to send notifications, for example, to a shared Slack channel, if the API's error rate exceeds a defined threshold over a specific interval. This allows for swift identification and resolution of potential issues with external service APIs, often before they impact your team's operations. A typical engagement for this level of integration complexity might take 6-12 weeks, depending on the number of systems and the intricacy of the business rules. Clients would need to provide API access and clear documentation of their existing systems and business processes. The deliverables would include the deployed API integration system, comprehensive documentation, and a handover plan.
What Are the Key Benefits?
Sync Data in Milliseconds, Not Minutes
Our event-driven architecture processes updates in under 500ms, compared to the 5-15 minute polling intervals common in off-the-shelf integration tools.
Pay for Compute, Not Per-Task
A flat monthly hosting bill for AWS Lambda and Supabase replaces unpredictable, per-task pricing that punishes you for growing your transaction volume.
You Own the Production Code
You receive the full Python source code in your private GitHub repository, along with a runbook for maintenance. You are never locked into our service.
Alerting Catches Errors Before You Do
We configure CloudWatch alarms to send Slack notifications if API error rates spike, ensuring issues with third-party systems are flagged immediately.
Connect Anything with an API Endpoint
Integrate modern SaaS like HubSpot and Stripe with legacy ERPs or custom-built internal databases through a single, consistent interface.
What Does the Process Look Like?
Week 1: Systems & Workflow Audit
You provide read-only API access and walk us through the business process. We deliver a technical specification document mapping every data field and trigger.
Week 2: Core API Build
We write the Python code for the FastAPI application. You receive a secure staging URL to test the integration logic with non-production data.
Week 3: Deployment & Live Testing
We deploy the application to AWS Lambda and connect it to your live systems. You receive a real-time log dashboard to monitor the first live transactions.
Week 4+: Monitoring & Handoff
We monitor performance and error rates for 30 days. You receive the full GitHub repository and a runbook detailing deployment, monitoring, and updates.
Frequently Asked Questions
- How much does a custom API integration cost?
- Pricing depends on the number of systems to integrate and the complexity of the data transformations. A simple one-way sync between two systems is a smaller project than a multi-system, two-way integration with conditional logic. We provide a fixed-price proposal after our initial discovery call, so you know the full cost upfront. Book a discovery call at cal.com/syntora/discover to discuss scope.
- What happens if an external system like Shopify has an outage?
- Our system is built for resilience. We use a message queue and retry logic with exponential backoff for all external API calls. If Shopify's API is down, the request will be automatically retried for up to one hour. If it still fails, the event is moved to a dead-letter queue in Supabase and a Slack alert is sent for manual review. No data is ever lost.
- How is this different from hiring a freelance developer?
- A freelancer may deliver a Python script. We deliver a production-grade, maintainable system. That includes structured logging, automated monitoring with alerting, infrastructure-as-code for deployment, comprehensive documentation, and a 30-day post-launch support period. We build systems designed to be managed and extended by future developers, not just to work once.
- How are our API keys and sensitive data secured?
- Credentials are never hardcoded. We store all API keys, tokens, and secrets in AWS Secrets Manager, which provides encrypted storage and access control. All data transfer is encrypted using TLS 1.3. The API itself can be configured to only accept requests from whitelisted IP addresses for an additional layer of security, which we recommend.
- What if we need to add another software integration in six months?
- The FastAPI application is designed to be modular. Adding a new integration, like syncing customer data to a new CRM, involves creating a new Pydantic schema and a new service file. The existing architecture makes this a straightforward and well-scoped project. Your team can do it following our runbook, or we can complete it in a short follow-on engagement.
- Do we need an engineer on staff to maintain this?
- No. For most clients, the system runs with zero maintenance. The provided runbook covers common scenarios like rotating an API key or checking logs. We also offer a monthly support plan that covers proactive dependency updates, monitoring, and a bucket of hours for minor changes or troubleshooting, so you don't need a dedicated internal resource.
Related Solutions
Ready to Automate Your Professional Services Operations?
Book a call to discuss how we can implement ai automation for your professional services business.
Book a Call