apily-nextdoor
  GET  /health
  GET  /usage
  GET  /businesses?q=<>[&enrich=1][&raw=1]
  GET  /business/<slug>     /  /business/<slug>/feed
  GET  /posts?q=<>          /  /classifieds?city=&state=&neighborhood=
  GET  /neighbors?q=<>      /  /neighborhood/<slug>/geometry
  GET  /city?city=&state=&slug=
  POST /gql                 (escape hatch)

Apily auth:  x-api-key <key>     (Free 100/IP/day · Starter $19 · Pro $99 · Scale $499)
Upstream:    x-nextdoor-cookie + x-nextdoor-csrf   (your own Nextdoor session)
Docs: https://apily.dev/nextdoor