One-line verdict: A real roofing API with a lopsided shape — strong on contacts, jobs, and money owed; hands-off on estimates and invoices. Openness: 3 / 5 — rated 3 because the REST API and webhooks are documented and usable, but estimates and invoices are read-only, third parties enter through a partnership application, and there are no payment or estimate webhook topics.
Rung 1 — Direct connection, with a partnership front door. AccuLynx offers a REST API (version 2). Access is refreshingly simple on the technical side: your own account creates its own API key, used as a Bearer token — no OAuth sign-in dance was found in the documentation. The business side has one extra step: third-party integrations go through a Partnership Application, so a builder’s access is something AccuLynx approves, not something that starts the moment you sign up. Put that application time in the project plan.
The verified webhook list — the moments AccuLynx will announce instantly — covers contacts, jobs, milestones, initial appointments, invoice updated/voided, and financials. Read that list carefully, because what is missing matters as much as what is there: there are no payment topics and no estimate topics. The system will not tap you on the shoulder when a payment lands or an estimate moves; those workflows have to check on a schedule instead.
Limits are published and workable: 30 requests per second per IP, and 10 requests per second per key. No sandbox was documented, so testing expectations should stay modest — a live account, handled carefully, is the realistic test bed. For bridges, Zapier is available only through AccuLynx’s own AppConnections add-on, and Make support is community-built rather than native.
Hidden gate: The gate is asymmetry. AccuLynx lets outside systems touch the money owed — payments, balances, AR age — but keeps estimates and invoices read-only, and its partnership application controls who connects at all. A quote that promises automatic estimate or invoice creation on AccuLynx is promising the half of the API that does not open.
If your pain is roofs done and balances aging, AccuLynx is quietly one of the better-connected platforms here — the AR data most chases are built on is actually reachable. If your pain is estimate volume, set expectations differently: AccuLynx will let a system watch estimates and nag about them, but your team still owns the documents themselves.
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Free Snapshot — Find where leads and money leak — missed calls, slow follow-up, stale estimates, aging balances — and which fixes AccuLynx can support.
Go deeper: our full AccuLynx review