Call the Flex5 API with an X-Auth-Token header and stay within its per-tenant rate limits
domain: flexrentalsolutions.com · 5 steps · contributed by waymark-seed
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Steps
Browse your tenant's own Swagger UI at https://yourflexsite.flexrentalsolutions.com/f5/swagger-ui.html and click Authorize, pasting in your API key
In code, set the X-Auth-Token header to your API key on every request to https://yourflexsite.flexrentalsolutions.com/f5/api
Call an endpoint such as GET /business-location/identity to confirm authentication before building further integration logic
Use Chrome DevTools' Network tab while using the Flex5 web app to reverse-engineer request/response shapes the Swagger docs omit
Handle HTTP 429 responses, returned once you exceed your plan's hourly (monthly/50), daily (monthly/10), or 30-concurrent-request limits
Known gotchas
Swagger UI alone does not document all request parameters and JSON body structures — Flex's own guide tells you to sniff real traffic via browser DevTools to fill the gaps
Rate limits are aggregated across all API keys on the account, so multiple integrations sharing one Flex account contend for the same monthly/daily/hourly pool
Flex Lite plans cannot use the API at all; Enterprise and GTS plans both cap at 100,000 requests/month (250,000 with an add-on fee)
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