NegativeEV bet checker MCP Server

by negativeev Your server? Claim it

answering

NegativeEV bet checker is answering right now. Last checked 3 min ago. It exposes 3 tools.

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

The linked repository no longer exists on GitHub — it was deleted or made private.

Uptime history 52 days of history · worst day 94%

52 days agonow

95.6%

Uptime 24h

87 of 91 checks

Tools

read from the server

491 ms

Response time

average over 24h

open, no key

Access

streamable-http

What changed 6

Every tool that appeared, vanished or quietly changed what it asks for. Recorded since 16 August 2026. No other catalogue keeps this.

29 Aug a tool changed version

28 Aug a tool changed version

27 Aug 3 tool descriptions were rewritten check_bet, get_slate, get_usage

15 Aug a tool changed version

NegativeEV bet checker does not always answer

Over the last week it answered 98.3% of our checks. We check every 15 minutes, so you hear about the next outage within the hour — not from your users.

Connect this server

Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 3 min ago.

Claude Code Claude Desktop Codex Cursor VS Code

run in your terminal

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

~/Library/Application Support/Claude/claude_desktop_config.json

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

~/.codex/config.toml

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

.cursor/mcp.json

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

.vscode/mcp.json

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

Available tools 3

Read directly from the server with tools/list, grouped by what they act on. If a tool disappears, we record the date.

bet

check_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.

slate

get_slate

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.

usage

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.

Endpoints

URL	Transport	State	Latency	Checked
https://negativeev.com/mcp	streamable-http	answering	502 ms	3 min ago

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NegativeEV bet checker — questions

Answers built from our own checks of this server.

What can NegativeEV bet checker do?

It exposes 3 tools, read directly from the server on our last check. Among them: check_bet, get_slate, get_usage. The full list with descriptions is on this page — we take it from the server itself via tools/list, not from a README. How MCP servers expose tools in the first place →

Is NegativeEV bet checker working right now?

We send a real MCP handshake every 15 minutes. Over the last 24 hours 87 of 91 checks got a reply (95.6%), average response time 491 ms. The bar chart above shows every period we have measured.

Is NegativeEV bet checker still maintained?

The linked repository no longer exists on GitHub — it was deleted or made private. We show this because it changes what you can expect: an unmaintained server may keep answering for months and then stop without warning.

How do I connect NegativeEV bet checker?

Copy the ready config from this page — we generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each with the file path that client actually reads. It is a remote server, so there is nothing to install — the client connects to the address.

Does NegativeEV bet checker need an API key?

No. NegativeEV bet checker completed a full MCP handshake with us as an anonymous client and listed its tools without asking for anything. All 3 of them are readable on this page. This is what we observed, not what the docs claim.

How fast is NegativeEV bet checker?

It answers our handshake in 491 ms on average, which is faster than 32% of all working MCP servers we measure. The comparison comes from our own checks across the whole registry, every 15 minutes.