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Paste a bet and NegativeEV checks it against thousands of simulated games to tell you whether the price is good, bad, or fair.Listings are sourced from public community registries and shown as reported.
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Tools
check_betanswerimperative
Grade a sports bet against NegativeEV's game simulations. Input the bet as plain text (teams/players, market, line, odds); a multi-leg parlay in one string is graded leg by leg and priced as a whole. Use it when the caller has a SPECIFIC bet to evaluate — it prices a bet you name, it does not search for good bets, so there is nothing to send for 'what should I bet tonight'. Call `get_slate` first if it isn't known that today's games are simulated. Every result leads with `status`: `graded` (every leg scored — this is the only status that spends a check), `partial` (some legs scored), `ungraded` (the bet was understood but no leg is covered by the sims), `no_bet_found` (no bet recognized in the text), or `no_slate`, `unsupported_market`, `unsupported_sport`. When a leg doesn't score, `ungraded_legs[].reason` says why and `retry.rephrasing_helps` says whether re-wording could change the answer — it is false whenever the bet parsed, so do NOT resend the same bet in different words to work around an `ungraded` result. Covers MLB, WNBA, PGA, and ATP; any other sport returns unsupported_sport. Games that already started still grade, against the simulations from before first pitch (a pre-game projection, flagged as such).Input schema
{
"type": "object",
"properties": {
"bet": {
"type": "string",
"description": "The bet text, e.g. 'Shohei Ohtani over 1.5 total bases -120'"
}
},
"required": [
"bet"
]
}get_slateanswerimperative
Whether there is a checkable slate right now (at least one simulated, not-yet-started game) in each live sport: MLB, WNBA, PGA, and ATP. Pass `sport` to ask about one; omit it for all of them. This is the free pre-check for `check_bet`: call it before grading when it isn't known that today's games are simulated, and call it after an `ungraded` result instead of re-wording the bet, because `ungraded` means the game isn't on the simulated slate rather than that the wording was wrong. Free — spends no check.Input schema
{
"type": "object",
"properties": {
"sport": {
"type": "string",
"enum": [
"MLB",
"WNBA",
"PGA",
"ATP"
],
"description": "One of: MLB, WNBA, PGA, ATP. Omit to get every live sport."
}
}
}get_usageanswerimperative
How many bet checks the caller has left and when the next one frees up — the daily allowance for anonymous callers, the hourly pace window for accounts. Call it before grading several bets in one turn, to know how many will fit, and after a check is refused for quota, to know when to retry. It reports the budget only; `check_bet` is what spends it. Free — spends no check.Input schema
{
"type": "object",
"properties": {}
}