Cartwheel API
No public, self-serve API. Cartwheel's integrations with Bullhorn, QuickBooks, ADP, and other partners are built and operated by Cartwheel itself rather than exposed as developer endpoints. Bespoke data access is negotiated case by case, and no developer portal or docs exist.
Frequently asked questions
Cartwheel scores D+ on the API Report Card. No public, self-serve API. Cartwheel's integrations with Bullhorn, QuickBooks, ADP, and other partners are built and operated by Cartwheel itself rather than exposed as developer endpoints. Bespoke data access is negotiated case by case, and no developer portal or docs exist.
Without a usable official API, teams fall back on manual exports, file drops, or one-off vendor integrations. The other option is an unofficial API layer like Supergood that automates the authenticated web app directly.
Cartwheel is an accounts receivable automation platform purpose-built for the staffing industry, staffing agencies, payroll-funding companies, and Employers of Record (EORs).
Vertical: Financial Services (AR automation and order-to-cash for a specific industry vertical, staffing). Sub-vertical: staffing-industry AR/AP/payments tech. Ingest time/expense and assignment data from the agency's ATS (Bullhorn, TempWorks, Aviont) or time-tracking system (Workzoom, Harvest).
Low-to-moderate within its niche, negligible outside it.
Assignments: candidate, end-client, start/end date, bill rate, pay rate, markup, OT rules, MSP/VMS fees. Timesheets and approvals: hours, expenses, approver, approval state, source ATS/time-tracking record ID.
Founded 2021; approximately 5 years old as of 2026.
Grades measure one thing: can a customer's engineering team get their own data out programmatically? We check six things (whether a real API exists, how access is gated, data coverage, auth quality, docs and developer experience, and stability) and roll them into a letter grade. Grades get re-verified, and they only move on evidence.
Yes. Supergood maintains an unofficial Cartwheel API and MCP server so AI agents and internal tools can read and write Cartwheel data. See the Cartwheel integration docs at supergood.ai/docs/cartwheel-api.