Rivac LabsLegacy System Modernization & API Wrapping
Plenty of critical business logic still lives in systems with no usable API: a fifteen-year-old on-prem database, a green-screen terminal app, a vendor tool that was never built to integrate with anything. This service wraps those legacy systems in a modern API layer, whether REST, GraphQL, or a message queue, so AI agents and automations can safely read and write to them without touching fragile internals directly or resorting to brittle screen-scraping. We design around the legacy system's real constraints, such as connection limits, batch-only processing, or undocumented schemas, rather than pretending it's a modern platform. The outcome is that decades of institutional data and logic finally become usable by the AI tools you're building today, without a costly, risky full replacement.
How We’d Approach This
A clear, staged plan — not a black box
- 1
Diagnose the legacy system's actual interfaces, whether database access, file exports, terminal, or vendor SDK, and its real constraints
- 2
Pilot a thin API wrapper against one read-only use case to prove safe, stable access
- 3
Review performance, error behavior, and edge cases with whoever knows the legacy system best before adding write operations
- 4
Build out the full API wrapper with caching and rate-limiting to protect the legacy system from overload
What You Get
Deliverables from this engagement
- A modern API layer, REST, GraphQL, or queue-based, sitting in front of the legacy system
- Documentation of the legacy system's real constraints and how the wrapper handles them
- Caching and rate-limiting configured to protect the legacy system from load
- Source code and API documentation for ongoing maintenance
Six Ways We Could Architect This
Different engagement, different build — pick the shape that fits
There’s more than one way to deliver on this service. Browse a few of the ways we’d structure the work, depending on your speed, budget, and integration needs.
Ready to get started?
Tell us what you’re trying to get done and we’ll help you find the highest-leverage place to start — scoped small enough to prove itself before you commit to anything bigger.
Talk to us about Legacy System Modernization & API Wrapping