NegativeEV bet checker
Grade any MLB, WNBA, PGA or ATP bet against thousands of play-by-play sims. No key, no signup.
Connect it
Settings → Connectors → Add custom connector
URL: https://negativeev.com/mcpSettings → Apps & Connectors → Advanced → Developer mode
Create connector with URL: https://negativeev.com/mcp{
"mcpServers": {
"bet-checker": {
"url": "https://negativeev.com/mcp"
}
}
}claude mcp add --transport http bet-checker https://negativeev.com/mcp{
"servers": {
"bet-checker": {
"type": "http",
"url": "https://negativeev.com/mcp"
}
}
}3 tools, verified live
check_betread-onlyCheck a specific sports bet against thousands of play-by-play game simulations: each leg's simulated probability, the sportsbook's implied probability, and the edge. Send the bet as plain text - teams or players, market, line, odds. A parlay in one string is graded leg by leg and priced as a whole. Call this first; nothing has to be set up, and a missing slate, an unrecognized bet, or an unsupport
get_slateread-onlyWhich of MLB, WNBA, PGA, and ATP have a checkable slate right now - at least one simulated game that has not started. Pass `sport` for one; omit it for all. Free, spends no check. It is not required before `check_bet`, which reports a missing slate itself at no cost. Call it to answer "what can be checked today", or after a `no_slate` or `ungraded` result, which mean the game is not on the simulat
get_usageread-onlyHow many bet checks the caller has left and when the next one frees up - 100 a day shared per device anonymously, 1000 an hour with a signed-in user's token. Free, spends no check. It grades nothing, so it is not a step before a check: call it when a check comes back refused for quota, or before working through a long list of bets.
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