Server data from the Official MCP Registry
Grade any MLB, WNBA, PGA or ATP bet against thousands of play-by-play sims. No key, no signup.
About
Grade any MLB, WNBA, PGA or ATP bet against thousands of play-by-play sims. No key, no signup.
Remote endpoints: streamable-http: https://negativeev.com/mcp
Security Report
Valid MCP server (1 strong, 1 medium validity signals). No known CVEs in dependencies. Imported from the Official MCP Registry.
3 tools verified · Open access · No issues found
Security scores are indicators to help you make informed decisions, not guarantees. Always review permissions before connecting any MCP server.
Permissions Required
This plugin requests these system permissions. Most are normal for its category.
How to Connect
Remote Plugin
No local installation needed. Your AI client connects to the remote endpoint directly.
Add this to your MCP configuration to connect:
{
"mcpServers": {
"com-negativeev-bet-checker": {
"url": "https://negativeev.com/mcp"
}
}
}Documentation
View on GitHubFrom the project's GitHub README.
NegativeEV MCP server
Grade any MLB, WNBA, PGA or ATP bet against thousands of play-by-play game simulations, from inside your AI client.
Whether a bet is worth taking depends on tonight's lineups, today's injuries, and the weather at first pitch. None of that is in a model's weights. Asked cold, a model answers fluently and wrongly. This server returns a probability counted from simulations of the actual game: each leg's simulated win probability, the probability the sportsbook's price implies, and the edge between them.
This is a hosted remote server. There is nothing to build or run from this repo. The repo is the server's public face and carries a mirror of its registry record (server.json).
Connect
No API key, no signup. Anonymous calls work immediately. The server speaks plain Streamable HTTP, so any MCP client can connect to https://negativeev.com/mcp.
Claude Code
claude mcp add --transport http negativeev https://negativeev.com/mcp
Claude Desktop and claude.ai
Settings → Connectors → Add custom connector, then paste https://negativeev.com/mcp as the URL.
Cursor
Add {"negativeev": {"url": "https://negativeev.com/mcp"}} under mcpServers in ~/.cursor/mcp.json. Also listed on cursor.directory.
VS Code (Copilot)
code --add-mcp '{"name":"negativeev","type":"http","url":"https://negativeev.com/mcp"}'
ChatGPT
Settings → Security and login → enable Developer mode, then add https://negativeev.com/mcp as a connector at chatgpt.com/plugins. Developer mode is required for custom MCP connectors and is available on Pro, Plus, Business, Enterprise and Education accounts on the web.
There is also a Claude Code plugin that wraps this server: jessejohnsohn/negativeev-bet-checker. Install with claude plugin install negativeev-bet-checker.
Opening https://negativeev.com/mcp in a browser shows the same install steps.
Tools
| Tool | What it does |
|---|---|
check_bet | Grades a bet written as plain text, including a multi-leg parlay in one string. Returns each leg's simulated probability, the implied probability from the price, and the edge. It prices a bet you name. It does not search the board for value. |
get_slate | Says whether there is a checkable slate right now. Free. Spends no check. |
get_usage | Reports checks remaining and when the next frees up. Free. Spends no check. |
Call get_slate first to confirm there is a checkable slate. check_bet spends one of the caller's checks only when the bet fully grades, and every result says so outright in its status and check_spent fields. A bet that comes back ungraded was understood. It is simply not on the simulated slate, so re-sending it with different wording returns the same answer. Check get_slate instead.
Limits and auth
Anonymous calls share a per-device quota of 100 checks a day, on its own counter. Signing in makes checks unlimited, with a pace cap of 1000 checks an hour. Send a signed-in user's access token as Authorization: Bearer. Details at negativeev.com/auth.md. An invalid or expired token is rejected with a 401 rather than silently downgraded, so re-authenticate rather than retrying anonymously.
Details
| Endpoint | https://negativeev.com/mcp |
| Transport | Streamable HTTP (stateless) |
| Sports | MLB, WNBA, PGA, ATP |
| Registry name | com.negativeev/bet-checker |
| Auth | Optional bearer token, details at negativeev.com/auth.md |
| Server card | /.well-known/mcp/server-card.json |
| Cost | Free |
NegativeEV checks bets. It takes no bets and sells no picks.
Reviews
No reviews yet
Be the first to review this server!
More Developer Tools MCP Servers
Fetch
Freeby Modelcontextprotocol · Developer Tools
Web content fetching and conversion for efficient LLM usage
Git
Freeby Modelcontextprotocol · Developer Tools
Read, search, and manipulate Git repositories programmatically
Toleno
Freeby Toleno · Developer Tools
Toleno Network MCP Server — Manage your Toleno mining account with Claude AI using natural language.
mcp-creator-python
Freeby mcp-marketplace · Developer Tools
Create, build, and publish Python MCP servers to PyPI — conversationally.
MCP Marketplace
Freeby mcp-marketplace · Developer Tools
Search and install MCP servers from inside your AI client.
MarkItDown
Freeby Microsoft · Content & Media
Convert files (PDF, Word, Excel, images, audio) to Markdown for LLM consumption