NegativeEV bet checker
Grade any MLB, WNBA, PGA or ATP bet against thousands of play-by-play sims. No key, no signup.
Should I use this
Quality & Safety
Based on automated analysis of tool definitions and protocol compliance.
Context Cost
This is the approximate number of tokens consumed each time the server's tools are loaded into a model's context. Higher counts reduce the attention available for other tasks.
Install
One-Click Install
Add this to your `claude_desktop_config.json` file:
{
"mcpServers": {
"bet-checker": {
"url": "https://negativeev.com/mcp"
}
}
}Remote endpoints
https://negativeev.com/mcpstreamable-httpWhat it can do
Tool inventory
Tools (3)
🟢check_bet(bet)
Check 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 unsupported market comes back as a plain `status` without spending a check. It prices a bet the caller names and never suggests one, so there is nothing to send for "what should I bet tonight". Every result leads with `status` and `check_spent` and says whether re-wording would change anything; when it says no, it means no. Covers MLB, WNBA, PGA, and ATP. A game that already started still checks, against the simulations from before it began.
Input Schema
{
"type": "object",
"properties": {
"bet": {
"type": "string",
"description": "The bet text, e.g. 'Shohei Ohtani over 1.5 total bases -120'"
}
},
"required": [
"bet"
],
"$schema": "https://json-schema.org/draft/2020-12/schema"
}🟢get_slate(sport)
Which of MLB, WNBA, PGA, and ATP have a checkable slate right now - at least one simulated game that has not started. Pass `sport` for one; omit it for all. Free, spends no check. It is not required before `check_bet`, which reports a missing slate itself at no cost. Call it to answer "what can be checked today", or after a `no_slate` or `ungraded` result, which mean the game is not on the simulated slate rather than that the bet was worded wrong.
Input Schema
{
"type": "object",
"properties": {
"sport": {
"description": "One of: MLB, WNBA, PGA, ATP. Omit to get every live sport.",
"type": "string",
"enum": [
"MLB",
"WNBA",
"PGA",
"ATP"
]
}
},
"$schema": "https://json-schema.org/draft/2020-12/schema"
}🟢get_usage
How 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.
Input Schema
{
"type": "object",
"properties": {}
}Community
Evidence