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live.marketmaster/mcp

by marketmaster.live · remote · local (npm) · no sign-in to list tools · v0.1.4 · published by live.marketmaster

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

Changes · 5
CompareRegistry entry

6 tools: 5 change things and 1 only read.

Scanned Oct 21, 2026

No check matched anything in the tool definitions. No finding is not a safety guarantee. How the checks work.

claude mcp add --transport http marketmaster https://api.marketmaster.live/mcp --header 'Authorization: <your-authorization>'

Tools

Open a tool for its reasons and full description. Descriptions are the publisher's own words, shown as they are.

6 tools

Changes things 5Claude Code: ask
  • mm_arbitrageTwo-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.No findings

    Why it is in this group

    • Nothing in its name or description says what it does, so it is counted as a write.
    • The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.
    Description, as the server wrote it
    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.

    Annotations the server declares

    • title: Cross-venue price spreads
    • readOnlyHint: true
    • destructiveHint: false
    • idempotentHint: true
    • openWorldHint: true
  • mm_edgesMispriced prediction-market edges (model fair value vs live price), ranked by edge size, across Kalshi and Polymarket.No findings

    Why it is in this group

    • Nothing in its name or description says what it does, so it is counted as a write.
    • The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.
    Description, as the server wrote it
    Mispriced prediction-market edges (model fair value vs live price), ranked by edge size, across Kalshi and Polymarket.

    Annotations the server declares

    • title: Find mispriced edges
    • readOnlyHint: true
    • destructiveHint: false
    • idempotentHint: true
    • openWorldHint: true
  • mm_marketA single market's latest snapshot plus any live edges for it.No findings

    Why it is in this group

    • Nothing in its name or description says what it does, so it is counted as a write.
    • The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.
    Description, as the server wrote it
    A single market's latest snapshot plus any live edges for it.

    Annotations the server declares

    • title: Get one market
    • readOnlyHint: true
    • destructiveHint: false
    • idempotentHint: true
    • openWorldHint: true
  • mm_marketsLatest normalized market snapshots across venues (title, YES/NO price, 24h volume, close time).No findings

    Why it is in this group

    • Nothing in its name or description says what it does, so it is counted as a write.
    • The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.
    Description, as the server wrote it
    Latest normalized market snapshots across venues (title, YES/NO price, 24h volume, close time).

    Annotations the server declares

    • title: List market snapshots
    • readOnlyHint: true
    • destructiveHint: false
    • idempotentHint: true
    • openWorldHint: true
  • mm_whalesRecent large real-money trades (whale fills) across venues, newest first.No findings

    Why it is in this group

    • Nothing in its name or description says what it does, so it is counted as a write.
    • The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.
    Description, as the server wrote it
    Recent large real-money trades (whale fills) across venues, newest first.

    Annotations the server declares

    • title: Recent whale trades
    • readOnlyHint: true
    • destructiveHint: false
    • idempotentHint: true
    • openWorldHint: true
Only reads 1Claude Code: allow
  • mm_statusYour API key's tier, rate limits, and current usage.No findings

    Why it is in this group

    • The name "mm_status" says "status": a word for reading.
    Description, as the server wrote it
    Your API key's tier, rate limits, and current usage.

    Annotations the server declares

    • title: API key status
    • readOnlyHint: true
    • destructiveHint: false
    • idempotentHint: true
    • openWorldHint: true

This is not a safety rating, and no finding is not a safety guarantee. The groups and findings come from fixed checks of the tool definitions the server returned on the date shown, not from its code or what it does when called. How the checks work.

Install

Pinned to version 0.1.4. Values in angle brackets are yours to fill in.

claude mcp add --transport http marketmaster https://api.marketmaster.live/mcp --header 'Authorization: <your-authorization>'

Run in a terminal.

Claude Code permissions

Allow the reads, ask before a change, deny the deletes. Paste into .claude/settings.json.

.claude/settings.json
{
  "permissions": {
    "allow": [
      "mcp__marketmaster__mm_status"
    ],
    "ask": [
      "mcp__marketmaster__mm_edges",
      "mcp__marketmaster__mm_markets",
      "mcp__marketmaster__mm_market",
      "mcp__marketmaster__mm_arbitrage",
      "mcp__marketmaster__mm_whales"
    ],
    "deny": []
  }
}

Tools that only read are allowed, tools that change things ask first, tools that delete or cancel are denied. It assumes the server is installed as marketmaster. Review it before you use it.