Fieldprint API Lessons

These notes document practical lessons learned while building a sensitivity analysis (SA) pipeline that submitted roughly 150,000 payloads across three FPP v5 sub-endpoints. The goal is to give other API data partners and programmers a head start — covering authentication, endpoint structure, payload construction, throttling behavior, error patterns, and response parsing, with concrete R code that shows how each piece fits together.

All code uses the httr2 + jsonlite + tidyverse stack. The patterns translate directly to any other language or HTTP library.

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