Agave has been a popular choice for construction software vendors looking to add accounting integrations without building each one from scratch. Their unified API covers a focused set of construction ERPs — Sage 300 CRE, Sage 100 Contractor, Acumatica, QuickBooks, Sage Intacct, Viewpoint — which maps well to the accounting systems that contractors typically run.

This post looks at how Apideck compares for software vendors in the same space.

The integration problem in construction software

Construction is one of the more fragmented verticals when it comes to accounting. A mid-size general contractor might run Sage 300 CRE. A specialty subcontractor uses QuickBooks Desktop. A growing firm recently moved to Acumatica or Sage Intacct. For a software vendor trying to serve all of them, that means either building and maintaining multiple integrations in-house or finding a unified API layer that handles the mapping.

The cost of building those integrations yourself is easy to underestimate. Each accounting system has its own authentication flow, data model, API quirks, and rate limits. Building one integration properly can take a developer several weeks. Maintaining it — keeping up with API version changes, handling auth token failures, debugging sync errors in production — is a recurring cost that never fully goes away. Multiply that by five or six ERPs and it becomes a significant drain on engineering capacity that could be spent on the core product.

Both Agave and Apideck sit in that unified API category, solving the same underlying problem. The differences are in scope and focus.

How the two products compare

Agave's API for software vendors is purpose-built for the construction stack. It covers the ERPs most common in that industry and keeps the integration model close to how construction data is actually structured — job costs, subcontracts, change orders, and so on. For a software vendor whose entire customer base runs on Procore and Sage, that specificity is a feature.

Apideck takes a broader approach. The accounting API covers the same construction ERPs but extends further: NetSuite, Xero, FreshBooks, MYOB, Zoho Books, and others that become relevant when a construction software vendor starts selling into mid-market or outside the US. Beyond accounting, Apideck also covers CRM, HRIS, and eCommerce under one unified API surface — relevant if a product roadmap eventually expands beyond financial data.

Both use a standardized data model, so vendors write to one schema and the platform handles translation to each underlying system. That means when a customer asks for a new connector, the lift on the vendor's side is minimal — it's a configuration change rather than a new integration build.

Connector coverage

Accounting connectors live on both platforms: QuickBooks Online, Sage Intacct, and Acumatica.

Where Apideck adds coverage Agave doesn't have: NetSuite, Xero, FreshBooks, MYOB, Zoho Books, Microsoft Dynamics 365 Business Central, Sage Business Cloud, and a number of regional platforms (Exact Online, Visma Netvisor, Procountor, and others). That matters particularly for vendors who are expanding internationally or selling into verticals adjacent to construction — property management, facilities, field service — where the ERP landscape looks different.

One gap worth flagging honestly: Agave covers Sage 100 Contractor and Sage 300 CRE, which are widely used in North American construction. We do not currently have those connectors. Our QuickBooks Desktop API is in as early access.

What the build vs. buy decision actually looks like

Most construction software vendors reach a point where the integration question can't be deferred anymore. A sales deal stalls because a prospect runs QuickBooks and the product doesn't connect. A customer churns because they're manually re-entering invoice data. The product team starts getting integration requests from five different customers asking for five different ERPs.

At that point, the options are roughly: build in-house, use a point-to-point integration tool, or use a unified API platform. Building in-house gives you full control but the ongoing maintenance cost tends to be higher than expected. Point-to-point tools (Zapier, Make, native connectors) work for simple use cases but don't give you the programmatic control or white-label experience a software vendor typically needs. A unified API platform abstracts the maintenance layer so engineering can focus elsewhere, with the tradeoff being that the data model is standardized rather than fully custom.

For construction SaaS companies serving customers across multiple ERP systems, the unified API approach tends to win on total cost over time — particularly as the number of required connectors grows.

Who Apideck works well for

Apideck is used by a number of vertical SaaS companies in construction — particularly those whose customers use a mix of accounting platforms and who want to avoid owning integration maintenance long-term. The use cases that come up most often are accounts payable automation, accounts receivable, and procurement workflows — all areas where construction software products need to push and pull data from the customer's ERP in real time.

It also tends to fit vendors who started with one or two accounting integrations and need to scale coverage without rebuilding. Because the unified model normalises data across all connected platforms, expanding to a new connector typically doesn't require changes to the application logic — just enabling the new integration on the platform side.

Worth knowing

Apideck has an active Intuit partnership for QuickBooks Online, which is the most widely used accounting system across SMB construction in North America. The platform is also SOC 2 Type 2 certified and doesn't store customer data — API calls are passed through in real time, which matters for construction companies with strict data governance requirements.

For developers, Apideck offers official SDKs in Node.js, Python, PHP, and .NET, plus an interactive API explorer and detailed per-connector documentation. Most teams have a working integration against a live connector within a day or two of starting.

If Agave's construction-specific focus was the main draw, it's worth comparing the connector lists side by side and testing both against your actual data models. The full list of accounting connectors and developer docs are the quickest way to do that.