Machine Learning — entry 022 of 24
Time Door
Time Door is an indie-built REST API for statistical time-series analysis: submit JSON time-series data and it returns forecasts, changepoint and anomaly detection, motif discovery, causal-relation inference, and other transformations without manual data prep. It authenticates with an access-token API key, offers an open interactive sandbox plus a free trial ahead of its paid plans, and its site/docs are rendered client-side as a Vue single-page app. Live-checked in July 2026: the homepage, demo, sandbox, and docs pages are all live and functioning, with CORS enabled per its own API listing.
AuthenticationAPI KeySign up with the provider to obtain credentials.
HTTPSSupportedTraffic is encrypted in transit.
CORSEnabledCallable directly from browser JavaScript.
PricingFreemiumA usable free tier exists, with paid plans for more volume.
FormatsJSONResponses can be requested as JSON.
GreatAPIs Score
Score75
Authentication15/25API key required
Pricing17/20Freemium tier available
Docs14/20Documentation URL provided
Formats9/15Single response format
Freshness20/20Verified within 6 months
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<a href="https://greatapis.com/api/time-door/"><img src="https://greatapis.com/badge/time-door.svg" alt="Scored 75 on greatapis.com"></a>Auth quickstart
- Sign up with the provider to get an API key.
- Send it on every request as a header
Authorization: <key> - The exact header isn't documented — Authorization is a common default; confirm in the provider's docs.
Stored keyNo key stored
Your key is stored only in this browser (localStorage) and sent directly to the API — never to greatapis.