Racing price history / closing line

Cost: 5 credits. Every price move for a race, per runner per bookmaker, with the opening and closing line.

Identify the race either by race_id, or by venue + race_number + date — use the latter for past races, because race ids are only resolvable from the live feed, which holds the next ~6 hours.

The series is change-only. Each point is a price MOVE, not a sample: a gap means the price held steady. move_pct is open→close, positive meaning the price drifted out.

open_price and close_price are the first and last CAPTURED prices for that book, not guaranteed market open and close. Capture starts when a race enters the 60-minute window, and a book that does not quote that early gets its first price whenever it starts quoting: measured over 30,448 series on 2026-08-15, 44% of series began at the 60-minute baseline and 56% began later. At the other end 63% of series have a final point inside 120s of the jump and 81% inside 300s, so the rest are not closing lines either. Read open_secs_to_jump, close_secs_to_jump and open_is_baseline on each bookmaker before using a series for closing-line value, and drop the ones that do not reach the jump.

History is permanent. Races inside the ~45-day live window are served from the live store; older races come from the permanent archive, which is never purged. history_from on the response is the true floor — capture began 2026-08-04, and the archive only deepens from there. (Identify past races by venue + race_number + date; both stores resolve that key.)

Past races are Standard and above. Every plan reads every upcoming race and any race that started in the last 24 hours. A race that started earlier needs Standard or above; on Free and Hobby it is a 403 that charges nothing and carries a sample of what the call returns, from one recent race.