Settings

API tokens for higher rate limits on public data sources. Stored only in your browser.

Data source API tokens
Optional. Without tokens you get ~1,000 requests/hour per source — plenty for personal use. Tokens raise the limit significantly and are stored in your browser's local storage only.
Get token

data.cityofchicago.org · used for zoning, ward, alderman, permits

Get token

datacatalog.cookcountyil.gov · used for PIN, assessed value, sales history

Test uses the values in the inputs above (not the saved ones).

Connection status
Live test of each data source.

Click "Test connectivity" to run.

How to get tokens
  1. Create a free account on each portal (or sign in if you have one).
  2. Open the developer settings page, click Create New App Token, give it any name, and copy the token value.
  3. Paste here and click Save tokens, then Test connectivity to verify.
Chicago token page Cook County token page