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Mantis

by Alfred768 · remote · no sign-in to list tools · v1.1.4 · published by GitHub user Alfred768

Cross-venue prediction market routing for AI agents with arbitrage, quotes, history, and signals.

Changes · 1
CompareRegistry entry

6 tools: 1 change things and 5 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 mantis https://mantiss.store/mcp

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 1Claude Code: ask
  • execute_urlGet a deep link URL to place a trade on the best venue for a given market.No findings

    Why it is in this group

    • The name "execute_url" says "execute": a word for a change.
    Description, as the server wrote it
    Get a deep link URL to place a trade on the best venue for a given market. The URL has a referral code embedded so the platform earns commission. Call this to get the URL, then direct the user to open it.
Only reads 5Claude Code: allow
  • get_arbitrageFind live cross-venue arbitrage opportunities — markets where the same event trades at different prices on Polymarket vs Kalshi vs other venues.No findings

    Why it is in this group

    • The name "get_arbitrage" says "get": a word for reading.
    Description, as the server wrote it
    Find live cross-venue arbitrage opportunities — markets where the same event trades at different prices on Polymarket vs Kalshi vs other venues. Can also estimate fee-normalized net spread for a position size.
  • get_historyGet historical OHLCV-style prediction market candles over a time range, including the latest stored depth snapshot within each bucket when available.No findings

    Why it is in this group

    • The name "get_history" says "get": a word for reading.
    Description, as the server wrote it
    Get historical OHLCV-style prediction market candles over a time range, including the latest stored depth snapshot within each bucket when available. Can also export CSV text or base64-encoded Parquet.
  • get_quoteGet the live probability, liquidity, and volume for a prediction market across all venues.No findings

    Why it is in this group

    • The name "get_quote" says "get": a word for reading.
    Description, as the server wrote it
    Get the live probability, liquidity, and volume for a prediction market across all venues. Can also return venue order book depth and size-aware VWAP/slippage estimates.
  • get_unmet_demandFind questions that users are searching for but no prediction market exists.No findings

    Why it is in this group

    • The name "get_unmet_demand" says "get": a word for reading.
    Description, as the server wrote it
    Find questions that users are searching for but no prediction market exists. Useful for discovering new market creation opportunities or identifying emerging topics with real trading interest.
  • route_marketFind the best prediction market for a natural-language question or trading intent.No findings

    Why it is in this group

    • The description's first verb is "find": a word for reading.
    Description, as the server wrote it
    Find the best prediction market for a natural-language question or trading intent. Returns the best cross-venue match, current probability, liquidity, and any arbitrage opportunity between venues.

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 1.1.4. Values in angle brackets are yours to fill in.

claude mcp add --transport http mantis https://mantiss.store/mcp

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__mantis__route_market",
      "mcp__mantis__get_arbitrage",
      "mcp__mantis__get_quote",
      "mcp__mantis__get_history",
      "mcp__mantis__get_unmet_demand"
    ],
    "ask": [
      "mcp__mantis__execute_url"
    ],
    "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 mantis. Review it before you use it.