The API Report CardAPI Index
CINC Systems

CINC Systems API

Community association management and accounting · cincsystems.com

CINC has a documented V1 REST API with OAuth 2.0 client credentials, but CINC hands out the client ID and secret and third-party vendors go through partner approval. Docs are thin, the full Swagger sits behind the customer login, and there are no webhooks.

Last verified: September 2026Real Estate & PropertyNO MCP
API GRADE
D+
VERIFIED SEP 2026

SCORECARD

ExistenceGOODPublic reference at cincapidocumentation.netlify.app documents a V1 REST API at {tenant}.cincsys.com/api/management/{mgmtId}.
AccessPOORClient ID and Secret are provided by CINC; third-party vendors go through the partnerships team's approval process.
CoveragePOORAssociations, call logs, aged balances, collections and documents are GET only; writes cover ACC, homeowners, vendors, charges.
AuthGOODOAuth 2.0 client credentials at identity.cincsys.com/connect/token; bearer tokens expire in 60 minutes with refresh.
Docs & DXPOORNine endpoint pages on a Gatsby template; the full Swagger is behind the customer portal login and there is no sandbox.
StabilityMIXEDDocs label the API V1 with no changelog; CINC claimed 125+ endpoints in 2022 but only nine groups are public.
MCPNONENo official or community MCP server found for this platform.
What you can do
Read homeowners, associations and aged balancesGET endpoints
Create ACC (architectural) requestsPOST ACC
Update vendor and homeowner recordsdocumented writes
Post charges to owner ledgersPost Charges endpoint
What you can't
Self-register for API credentialsCINC issues ID and secret
Receive webhooksnone documented
Test in a sandboxnone documented
See the full Swagger without a logintenant portal only
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Frequently asked questions

CINC Systems scores D+ on Supergood's API Report Card. CINC has a documented V1 REST API with OAuth 2.0 client credentials, but CINC hands out the client ID and secret and third-party vendors go through partner approval. Docs are thin, the full Swagger sits behind the customer login, and there are no webhooks.

Tried to integrate with CINC Systems?
SOURCES
Support tickets get closed before resolution and navigation has no logic, with many steps for simple tasks. softwareadvice.com
No audit trail for transactions, custom reporting is not user friendly and some reports cannot be exported to Excel. capterra.co.nz
Batch posting and file queues load slowly or not at all, and the system times out mid-task without warning. softwareadvice.com
A management company owner reports extra fees when an association banks outside CINC's integrated partners, rotating account managers and surprise charges on invoices. linkedin.com
The system cannot email violation notices to tenants, and maintenance reporting is weak. a2is.com