Cost: 3 credits. One race on the live board: for every runner, the market consensus price now and at fixed marks before the jump (T-60, T-30, T-15, T-10, T-5, T-2), its high and low since capture began, movement measured against those marks and against the last five and two minutes, the number of ticks in the last five minutes, the best price against the consensus, how many books moved with the headline, the first attributable book to move, and a signal class whose rule is printed in the response.

Naming the race. race_id from /v1/racing/next-to-go or /v1/racing/events is exact. Failing that, venue + meeting_date (AET) + race_number, with country when two meetings share the name on one date; a venue split answers 409, naming each race, and costs nothing.

Time-anchored, not open-anchored. Every movement figure compares the consensus NOW with the consensus at a fixed time, computed by the same arithmetic as GET /v1/racing/consensus and the archive's consensus columns: each book's win prices with its margin removed, the median across books, the field scaled to one. move_from_t60_pct is negative for a runner that shortened. A mark is null when the race had not entered the capture window by then — capture begins 60 minutes before the jump, so a race further out than that carries now only and window.open is false.

Breadth. with_history counts books quoting now with two or more captured prices on the runner; firming, drifting and unchanged partition them by each book's own price against its price at T-60 (or its first tick, when it joined later). A headline move that most of with_history did not make is one book repricing, not the market.

First mover names the earliest attributable book to move at least 5 % in the headline direction, with its lead over the next book and the median lag of the followers. It is undetermined when fewer than two attributable books moved or when the lead is inside the 30-second attribution floor (the books are polled every 8–17 seconds). Books whose timestamps cannot order a move are excluded and named in method: push-fed books (the stamp is the receipt, not the read) and books polled slower than the floor.

Signal is one of strong_firm, firm, steady, drift, strong_drift or insufficient, from move_from_t60_pct and the breadth, by the rule in method.signal_rule. It is a classification of what the market did, not a prediction; its strike rate against results will be published on the market report once the archive carries it.

Live only. A race that has left the live board answers 404; a race inside the ten minutes after its jump is still served while the books drop off, with a note.

Every plan, Free included. 3 credits, charged after the race is found.