Sage

Does Sage Have an API? Depends Entirely Which Sage You Mean.

Sage 100 and Sage 300 (built on the old Accpac platform) both expose developer APIs you can build custom integrations against directly. Sage 50 is a different story: most installs, especially older desktop ones, have no broad modern API, just older data-exchange paths like ODBC for reading records. Knowing which bucket your Sage install falls into is the first real question, and it's exactly why we treat 'build an integration for Sage' as a per-product question, not a generic one.

What each Sage product actually offers a developer

Sage 100 has a genuine developer path, with API access and documentation available through Sage's developer portal, enough to build a real integration against sales orders, inventory, and general ledger data without resorting to workarounds.

Sage 300, built on the original Accpac platform, has its own SDK and integration framework, carried forward from its Accpac roots and extended over the years. If you see "accpac integration" in older documentation or forum posts, that's this same product under its former name.

Sage 50 (US, UK, and Canadian versions all differ slightly) is the one where the honest answer is "it's limited." Most Sage 50 installs offer ODBC access for reading data out, which covers a lot of reporting use cases, but writing data back in or triggering actions programmatically usually isn't exposed through a clean, documented API the way Sage 100 or 300 is.

Sage Pay, a payment gateway Sage used to sell, is worth a quick note since it still surfaces in search: Sage sold it off in 2020 and it's now operated independently as Opayo. If you're looking for current payment-gateway API docs, you want Opayo's, not Sage's.

Where that gap turns into real automation work

When a Sage 50 install genuinely has no write-capable API for something you need, that doesn't mean the task is impossible, it means the API isn't the tool for the job. We handle that gap with direct database-level integration where it's safe to do so, or with scripted automation against the Sage desktop interface itself for the handful of actions that only exist as a screen, not an endpoint.

On Sage 100 and Sage 300, where a real API already exists, the work looks more familiar: building the specific integration logic a prebuilt connector doesn't cover, rather than working around a missing endpoint in the first place.

What we build against Sage's APIs (and around their gaps)

Custom integrations on Sage 100 and Sage 300

We build directly against the documented API or SDK for these products, pulling or pushing exactly the data your other systems need without a generic connector's default limitations.

Database-level and screen-level work for older Sage 50 installs

For the parts of Sage 50 that have no API path at all, we connect at the database level where it's safe, or automate the desktop screen directly for the rare action that only exists there.

Not sure which Sage product you're even running, API-wise?

Tell us the product and version, and we'll tell you plainly what's possible through an API versus what needs a different approach.

Let's talk

Been told your Sage install 'doesn't have an API'?

Tell us which Sage product and version you're on, and what you're trying to connect it to. Sometimes there's a real API waiting to be used properly, and sometimes there genuinely isn't, in which case we find another way in. Either way, we automate whatever's manual in your business, Sage or otherwise.

Let's talk

Frequently Asked Questions

Does Sage 50 have a REST API?+

Not a broad one, generally speaking. Most Sage 50 installs expose data through ODBC for reading records, which works well for reporting, but a full modern REST API for writing data back in isn't standard the way it is on Sage 100 or Sage 300.

Where do I find Sage 100 API documentation?+

Through Sage's developer portal, which covers the Sage 100 API alongside documentation for Sage's other developer-facing products.

What was Sage Accpac, and does it still have an API?+

Accpac was the earlier name for what's now Sage 300. The product's SDK and integration framework carried forward under the new name, so "Accpac integration" and "Sage 300 integration" are largely talking about the same underlying system.

Do I need a developer to build on the Sage API?+

For production use, yes. Even on Sage 100 or Sage 300, where a real documented API exists, building something that handles authentication, errors, and your actual business logic correctly is real development work, not a plug-and-play setup.

Is Sage Pay the same as Sage accounting software?+

No, and it's not even a Sage product anymore. Sage Pay was a payment gateway Sage used to own, sold off in 2020 and now operated independently under the name Opayo.