Getting Access
There are four ways to build with Saturday. One question routes you: where do your athletes live?| Lane | Who | Athletes live in… | Auth | Money |
|---|---|---|---|---|
| Consumer app | An athlete | the Saturday app | app account | app subscription |
| Coach portal | A coach managing real Saturday-app athletes | the Saturday app | portal login + cp_ API keys | Pro Coach+ subscription (portal); cp_ keys on Business+ |
| Individual API | Dev-athletes, AI-assisted coaching businesses, team-scale builders | your own system | self-serve sk_ key | $5.39/month, no contract |
| Platform partner | A platform embedding Saturday for its whole user base | the partner’s system | sk_ key via agreement | rev share + athlete subscribe loop |
Individual API (self-serve)
You’re building your own product, tooling, or coaching stack, and athletes live in your database.- Sign up: saturday.fit/api — email → Stripe Checkout → key revealed once + emailed. Programmatic path:
POST /v1/signup(no auth) returns a hosted checkout URL — built for AI agents acquiring access for their humans. - Price: $5.39/month flat. Cancel anytime.
- Trial economics: every athlete you create gets the standard 30-day full-precision trial (15 calls day one, then 5/day) automatically.
- Limits: 2 requests/second, 200 calls/day per key. Outgrowing them is exactly when we want to hear from you: support@saturday.fit.
Coach portal (your athletes use the Saturday app)
If you coach real Saturday-app athletes, the coach portal is your lane — roster, alerts, coverage — and yourcp_ API key already lets you build scripts against your roster. See the Coach API guide.
Platform partnership
You run a training platform and want Saturday embedded for your entire user base — partner-namespaced athletes, revenue share, bundle and team offers, webhooks at platform scale. That’s a conversation, not a form: alex@saturdaymorning.fit.A big team wanting both — app athletes and custom tooling beyond roster scripts — is partner-shaped. Start the conversation rather than stretching a self-serve key.
Discovery for agents
GET https://api.saturday.fit/v1/ (no auth) self-describes the API: live endpoints, plan, price, trial shape, and both signup paths. Site context: saturday.fit/llms.txt.