MCP server

NegativeEV bet checker Official

com.negativeev/bet-checker

Checked 26 Oct 2026, 08:29 UTC · Connected to it and listed its tools

Grade any MLB, WNBA, PGA or ATP bet against thousands of play-by-play sims. No key, no signup.

Working at last checkVerified publisher: negativeev.comAbout 644 tokens per request once connected3 toolsDescription tries to instruct AI agents

https://negativeev.com/mcp

At a glance

Type: MCP server
Publisher: negativeev.com (verified by the MCP Registry)
Status: Working at last check
Tools: 3
Token cost: About 644 tokens per request
Sets up in: Claude Code, Claude Desktop, Codex, Gemini CLI, Cursor, VS Code, Antigravity, ChatGPT, OpenAI API, Grok
Last checked: 26 Oct 2026, 08:29 UTC

Opens the app, which shows the server and asks you to confirm. For other apps, copy the setup below.

Claude Code

claude mcp add --transport http bet-checker https://negativeev.com/mcp

Claude Desktop

Settings → Connectors → Add custom connector, and paste the URL.

Codex (config.toml)

[mcp_servers.bet-checker]
url = "https://negativeev.com/mcp"

Gemini CLI

{"mcpServers":{"bet-checker":{"httpUrl":"https://negativeev.com/mcp"}}}

Cursor

{"mcpServers":{"bet-checker":{"url":"https://negativeev.com/mcp"}}}

VS Code

{"servers":{"bet-checker":{"type":"http","url":"https://negativeev.com/mcp"}}}

Antigravity

agy mcp add bet-checker https://negativeev.com/mcp

ChatGPT

Settings → Apps & Connectors → Advanced settings: turn on Developer mode, then Create a connector and paste the URL. Which plans can do this varies.

OpenAI API (Responses tools)

{"type":"mcp","server_label":"bet-checker","server_url":"https://negativeev.com/mcp","require_approval":"always"}

Grok (xAI API tools)

{"type":"mcp","server_label":"bet-checker","server_url":"https://negativeev.com/mcp"}

check_bet ~315 tokens
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.
get_slate ~209 tokens
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 c
get_usage ~120 tokens
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 wor

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