Picking the right first project
Teams that struggle with their first connector usually picked their most complex, highest-stakes system to start with, reasoning that the value would justify the effort. A better first project is a low-risk, read-only system — an internal wiki, a simple lookup tool — where getting the underlying pattern right matters more than the specific business value delivered by that first, deliberately modest connector.
This isn't about avoiding ambition — it's about sequencing it correctly. The second and third connectors you build will go noticeably faster once your team has internalized the authentication pattern, the error handling approach, and the documentation habits that the first one forces you to figure out under low stakes rather than high ones.
What to get right the first time
- Authentication and scoping — decide exactly what the connector can and can't touch before writing the integration logic, not as an afterthought once the happy path works.
- Error handling that fails safely and visibly, rather than silently returning wrong or partial data that looks complete but isn't, which is a far more dangerous failure mode than an obvious error.
- Documentation of what the connector does, for the next engineer who has to maintain it after you've moved on to something else, written at the time you build it, not reconstructed later from memory.
Pitfalls that show up almost every time
The most common mistake in a first connector isn't a technical bug — it's under-scoping the error handling because the happy path was the interesting part to build and testing failure modes felt like an afterthought. A connector that works perfectly when everything goes right but returns something misleading when the underlying system is slow, down, or returns unexpected data is worse than one that fails loudly, because a misleading success is much harder to catch than an obvious failure.
The second most common mistake is skipping documentation because the connector felt too simple to bother writing anything down about. Six months later, when the original engineer has moved to a different project, that "too simple to document" connector is exactly the kind of thing nobody remembers the details of, and undocumented simplicity is still a maintenance burden for whoever inherits it.
Once your first connector is live and stable, it's worth doing a short retrospective with whoever built it — what took longer than expected, what would you do differently, what pattern from this first project should become a template for the next one. That thirty-minute conversation, captured somewhere the rest of the engineering team can find it, is often what turns a single successful connector into a repeatable internal capability rather than a one-off project nobody else knows how to replicate confidently.
It's also worth resisting the pressure, once the first connector works, to immediately hand the pattern off to a less experienced engineer to replicate without any oversight. The first connector's value isn't just the connector itself — it's the judgment about scoping, error handling, and documentation that the team building it developed along the way, and that judgment transfers best through some direct collaboration on the second project, not through a written spec alone.