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Marketmaster MCP Server

by marketmaster Your server? Claim it
answering

Marketmaster is answering right now. Last checked 9 min ago. 17 installs a week from npm. It exposes 6 tools.

Live Kalshi and Polymarket data: EV edges, cross-venue arbitrage, markets, and whale trades.

Installs per day peak 9 · avg 3 · -19% w/w
a month agotoday
Uptime history 59 days of history · worst day 99%
59 days agonow
100.0%
Uptime 24h
91 of 91 checks
6
Tools
read from the server
420 ms
Response time
average over 24h
17
Installs / week
npm and PyPI

What changed 1

Every tool that appeared, vanished or quietly changed what it asks for. Recorded since 14 October 2026. No other catalogue keeps this.

14 Oct a tool description was rewritten mm_arbitrage

Nothing serious here today

Today is the operative word: we check Marketmaster every 15 minutes and re-read its code on every release. Watch it and you find out the day that stops being true.

Three servers free · no card

Connect this server

Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 9 min ago.

run in your terminal
claude mcp add mcp --transport http https://api.marketmaster.live/mcp
Settings → Connectors → Add custom connector, then paste this address
https://api.marketmaster.live/mcp
~/.codex/config.toml
[mcp_servers.mcp]
url = "https://api.marketmaster.live/mcp"
.cursor/mcp.json
{
  "mcpServers": {
    "mcp": {
      "url": "https://api.marketmaster.live/mcp"
    }
  }
}
.vscode/mcp.json
{
  "servers": {
    "mcp": {
      "type": "http",
      "url": "https://api.marketmaster.live/mcp"
    }
  }
}

Available tools 6

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

arbitrage
mm_arbitrage
Two-leg cross-venue locks on Yes/No markets listed on both Kalshi and Polymarket: buy YES on one venue and NO on the other at the ask. Returns the spread before fees and net of taker fees; depth and slippage not included.
edges
mm_edges
Mispriced prediction-market edges (model fair value vs live price), ranked by edge size, across Kalshi and Polymarket.
market
mm_market
A single market's latest snapshot plus any live edges for it.
markets
mm_markets
Latest normalized market snapshots across venues (title, YES/NO price, 24h volume, close time).
status
mm_status
Your API key's tier, rate limits, and current usage.
whales
mm_whales
Recent large real-money trades (whale fills) across venues, newest first.

Endpoints

URLTransportStateLatencyChecked
https://api.marketmaster.live/mcp streamable-http answering 435 ms 9 min ago

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B
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Marketmaster — questions

Answers built from our own checks of this server.

What can Marketmaster do?
It exposes 6 tools, read directly from the server on our last check. Among them: mm_arbitrage, mm_edges, mm_market, mm_markets, mm_status, mm_whales. 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 Marketmaster working right now?
We send a real MCP handshake every 15 minutes. Over the last 24 hours 91 of 91 checks got a reply (100.0%), average response time 420 ms. The bar chart above shows every period we have measured.
How do I connect Marketmaster?
Copy the ready config from this page. We generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each in the form that client actually reads. It is a remote server, so there is nothing to install — the client connects to the address.
Does Marketmaster need an API key?
No. Marketmaster completed a full MCP handshake with us as an anonymous client and listed its tools without asking for anything. All 6 of them are readable on this page. This is what we observed, not what the docs claim.
How fast is Marketmaster?
It answers our handshake in 420 ms on average, which is faster than 33% of all working MCP servers we measure. The comparison comes from our own checks across the whole registry, every 15 minutes.
How many people use Marketmaster?
The npm package @marketmaster/mcp was installed 17 times in the last week. Week over week that is -19%. We show installs rather than GitHub stars on purpose: a star is a bookmark, an install is someone actually running it.