Oyster API
Oyster publishes a public REST API at docs.oysterhr.com with OAuth 2.0, webhooks, and documented rate limits. Access is self-serve with no partner program named. Coverage spans EOR hiring, benefits, time off, invoicing, and offboarding, with newer endpoints in public beta.
Frequently asked questions
Oyster scores A+ on the API Report Card. Oyster publishes a public REST API at docs.oysterhr.com with OAuth 2.0, webhooks, and documented rate limits. Access is self-serve with no partner program named. Coverage spans EOR hiring, benefits, time off, invoicing, and offboarding, with newer endpoints in public beta.
Oyster has a workable official integration path. Most engineering teams can build against it directly. Open API: self-serve, documented, with SDKs
Oyster is a global employment platform that lets companies hire, pay, and manage full-time employees and contractors in 180+ countries without standing up local legal entities.
Primary vertical: Enterprise / HR / ERP, specifically the global employment / EOR sub-segment alongside Deel, Remote, Velocity Global, Multiplier, and Rippling EOR. A US-based startup hires a software engineer in Portugal.
Mid-tier within a crowded category. Oyster is consistently named as a top-five global EOR alongside Deel and Remote (the two clear category leaders), and is a 2026 G2 Leader, winner of UNLEASH 2025 Best Global Solution, and SaaS Awards 2025 Best SaaS for HR.
Oyster sits directly on top of international payroll, statutory tax withholding, employment contracts, and benefits enrollment in 180+ jurisdictions.
Oyster was founded in 2020 and grew rapidly during the remote-work boom, raising over $220M and reaching unicorn status in 2022.
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.