Sling API
Sling ships a documented public REST API at api.getsling.com with a Swagger UI, self-serve for any admin account. The OAuth2 refresh-token flow is openly broken, forcing full re-login when hourly access tokens expire. No webhooks and no published rate limits, so integrations poll.
Frequently asked questions
Sling scores C on the API Report Card. Sling ships a documented public REST API at api.getsling.com with a Swagger UI, self-serve for any admin account. The OAuth2 refresh-token flow is openly broken, forcing full re-login when hourly access tokens expire. No webhooks and no published rate limits, so integrations poll.
Sling has an official API, but teams routinely hit its limits: gated access, partial coverage, or paid tiers. Most end up supplementing it with exports or an unofficial API layer like Supergood.
Sling is a cloud-based employee scheduling, time tracking, and team communication platform built for businesses that run on hourly, shift-based labor.
Vertical: POS / Hospitality (with significant spill into retail, healthcare front-desk, call centers, hotels, education, nonprofits, emergency services, and construction trades). Building weekly shift schedules with drag-and-drop, shift templates, and copy-from-previous-week. Employee self-service: shift swaps, drop requests, availability updates, and time-off requests through iOS/Android apps.
5/10 within SMB hourly workforce management. Sling reports 'tens of thousands of customers' with named brand logos including Amazon, AMC Theatres, and The UPS Store, plus broad penetration across independent restaurants.
Partial - Sling is the system of record for shift schedules, time clock punches, team communications (chat/newsfeed), tasks, PTO balances, and availability at tens of thousands of SMB locations.
~10-11 years old, founded 2014-2015 in Brooklyn, NY. Cloud-native SaaS from day one, mobile-first (iOS + Android) with a modern responsive web app.
OAuth refresh-token flow is broken - after the access token expires (~3600s) there is no working endpoint to exchange the refresh_token for a new access token, forcing integrators to re-run the full login flow. Public getsling-api-docs GitHub repo is explicitly marked 'WIP / currently being migrated' with 7 open issues, suggesting documentation is stale and incomplete. Full sourced list under Sources below.
Common alternatives include When I Work, Homebase, 7shifts, Deputy, Connecteam, HotSchedules (Fourth). Graded alternatives appear under "More from the report card" below.
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 Sling API and MCP server so AI agents and internal tools can read and write Sling data. See the Sling integration docs at supergood.ai/docs/sling-api.