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post/gemrate/v1/set_history2 credits

A set's grading history: total graded and gems every day the population changed, with graded in the last 7, 30 and 365 days. PSA back to 2021 for sports and TCG; BGS (from late 2021) and SGC (from 2022) for sports sets.

Working example
Parameters

PSA, BGS or SGC (no CGC set history; BGS and SGC history covers sports sets, not TCG).

Set year (4 digits).

Card category (aliases accepted: pokemon/tcg/magic → tcg-cards, baseball, basketball, football, hockey, soccer, golf, boxing, non-sport, multi-sport…).

The set name exactly as the grader spells it (from `sets`, a card's by_grader rows, or `top_cards`).

Only the last N days of history (default: everything). (1–4000)

Ask Reef AI
request preview
curl -X POST https://api.reefapi.com/gemrate/v1/set_history \
  -H "x-api-key: $REEF_KEY" \
  -H "content-type: application/json" \
  -d '{"year":"1999","category":"tcg-cards","set_name":"Pokemon Game"}'

Press Send request to see the live result here.

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What you can run here, without an account

ReefAPI is one HTTP gateway to 632 live web-data APIs covering 3860 endpoints across 13 categories. Every endpoint answers with the same JSON envelope, so one integration reaches all of them. Each response reports what it cost and when the source was read.

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