Simulators
Realistic API simulators for training and testing.
Every simulator is a single binary that keeps state and runs on your machine. No account, no sign-in, no key.
Kalshi
A real matching engine, a WebSocket feed, a captured day replayed at speed.
91.1%
of 225 probes match live
- 52 / 60
- workflows
- 109
- endpoints
GitHub Pulls
Pull requests, reviews, merges and checks, with GitHub's permission rules.
98.6%
of 138 probes match live
- 98 / 101
- workflows
- 37
- endpoints
Stripe Products
The product catalogue: create, retrieve, update, delete, list.
92.9%
of 14 probes match live
- 9 / 9
- workflows
- 5
- endpoints
Slack
The Slack Web API in the bot dialect: channels, messages, users, reactions, pins, files.
72.9%
of 221 probes match live
- 72 / 109
- workflows
- 67
- endpoints
