Start small. Build something good.
Explore a free sample dataset, then choose the request allowance that fits your application.
Sandbox
Explore the contract before you integrate.
- 10 requests per minute
- API key management
- Public sample dataset
- JSON and CSV responses
Developer
A focused workspace for your next build.
- 60 requests per minute
- Current projections API
- Recorded observation history
- Replayable change feed
Production
More capacity for the apps you operate.
- 300 requests per minute
- Everything in Developer
- Higher request allowance
- Signed webhook delivery
Plan limits apply to authenticated API requests. Sample data is fictional and always labeled. Paid plans do not imply any unlisted coverage, historical depth, or freshness guarantee. Source availability and usage permissions must support your intended use.
Know your plan.
What does a request include?
An authenticated request queries the dataset we have collected. Pagination limits still apply; large exports and queries are bounded.
Does more usage mean fresher data?
No. API response speed and upstream collection cadence are separate. Every observation includes its timestamp.
Is historical data included?
The API exposes observations actually retained. Check the coverage manifest for available dates; we don’t imply a backfilled archive.