Horse Racing Pulse 🐎

A shortening price is one of the oldest tells in racing. Catch it before the off.

Pari-mutuel odds aren't fixed by a bookmaker — they float with the betting pool right up to post time. When real money (often smart money) lands on a horse, its price shortens fast. This actor watches that movement across every PMU race still open for betting, continuously.

🆕 New: hidden form patterns (opt-in)

Odds movement tells you where the money is going right now. A horse's history tells you things a human would need to cross-reference by hand to notice — a jockey switch on the day, a horse still winless after a double-digit number of starts, earnings swinging sharply year over year. Turn on include_form_history and the actor now flags these automatically, alongside the odds signals. Off by default — nothing changes for existing users unless you opt in.

What you get

Three row types:

• Snapshot — current odds + implied probability for every horse in every tracked race
• Signal — a named, fired condition on odds movement:

Signal	Meaning
steamer	A horse's implied probability jumped between runs — money coming in fast, price shortening
drifter	A horse's implied probability faded between runs — confidence draining, price lengthening

• Pattern (opt-in via include_form_history) — a named, hidden form signal:

Pattern	Meaning
debutant	Horse's first-ever race — no form to go on
winless_streak	10+ career starts, still 0 wins
jockey_change	Jockey/driver changed for this race
earnings_swing	This year's earnings vs last year's swung 50%+ in either direction

Sources (public, no API key, no proxy)

PMU (Pari Mutuel Urbain) — France's official pari-mutuel operator, exposes a fully public, key-less JSON API used by its own web and app clients. Covers French tracks (flat, trot, jump) plus a handful of foreign tracks PMU takes bets on. No account, no login, no proxy needed.

Only races still open for betting are scanned (PROGRAMMEE, ROUGE_AUX_PARTANTS, DEPART_DANS_TROIS_MINUTES status) — finished races are skipped automatically, so every run's actionable.

Use cases

• Punters — spot steamers before the crowd, avoid drifters
• Value bettors — price movement is a core tell for market confidence shifts
• Content & tipster sites — power previews with live movement data
• Bots & automations — feed clean signals into your own alerting pipeline

Input (all optional)

Field	Default	Description
max_races	20	How many soonest-starting active races to scan per run
movement_threshold_pct	5	Minimum implied-probability change (percentage points) between runs to fire a signal
only_signals	false	Skip snapshots, only push steamer/drifter/pattern rows
include_form_history	false	New. Also flag hidden form patterns per horse (see above)

Output

{
  "type": "signal",
  "signal": "steamer",
  "hippodrome": "CHANTILLY",
  "num_reunion": 1,
  "num_course": 8,
  "race_name": "LE ROI SOLEIL",
  "horse_num": 4,
  "horse_name": "INGEBORG",
  "prob_change_pct": 6.8,
  "current_cote": 5.2,
  "current_prob_pct": 19.2,
  "previous_prob_pct": 12.4,
  "message": "INGEBORG (#4) at CHANTILLY R1C8: odds shortened to 5.2 (12.4% -> 19.2% implied) — money coming in fast."
}

With include_form_history: true, you also get rows like:

{
  "type": "pattern",
  "pattern": "earnings_swing",
  "hippodrome": "VINCENNES",
  "num_reunion": 1,
  "num_course": 3,
  "race_name": "PRIX D'AUTOMNE",
  "horse_num": 5,
  "horse_name": "MAIS OUI MADRIK",
  "direction": "up",
  "swing_pct": 5568.0,
  "message": "MAIS OUI MADRIK (#5): earnings up 5568% vs last year (€510 -> €28905)."
}

Pricing

Pay per result: $0.002 per row (snapshots + signals + patterns).

Tips

• Schedule it every 10–15 min during racing hours to catch steam as it builds toward post time; movement between two runs is what triggers a signal, so it needs a persistent schedule (not one-off runs) to be useful.
• Lower movement_threshold_pct for more sensitivity (more signals, more noise) or raise it to only catch big moves.
• Races close to post time move fastest — max_races is sorted soonest-first by default.

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⚠️ Not betting advice. Odds movement reflects market activity, not a guaranteed outcome. This actor surfaces public odds data — it does not place bets or guarantee profit.