Prediction Markets API MCP Server

by br0ski777 Your server? Claim it

not responding

Prediction Markets API is listed as active in the registry but did not answer our last check. It exposes 3 tools. Last commit 2 Sep 2026.

Prediction market odds from Polymarket. Active markets, probabilities, volume. x402.

Uptime history 51 days of history · worst day 0%

51 days agonow

0.0%

Uptime 24h

0 of 91 checks

Tools

read from the server

60 ms

Response time

average over 24h

Stars

last commit 2 Sep 2026

Prediction Markets API does not always answer

Over the last week it answered 29.7% 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 7 min ago.

Claude Code Claude Desktop Codex Cursor VS Code

run in your terminal

claude mcp add prediction-markets --transport http https://prediction-markets.api.klymax402.com/mcp

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

{
  "mcpServers": {
    "prediction-markets": {
      "url": "https://prediction-markets.api.klymax402.com/mcp"
    }
  }
}

~/.codex/config.toml

[mcp_servers.prediction-markets]
url = "https://prediction-markets.api.klymax402.com/mcp"

.cursor/mcp.json

{
  "mcpServers": {
    "prediction-markets": {
      "url": "https://prediction-markets.api.klymax402.com/mcp"
    }
  }
}

.vscode/mcp.json

{
  "mcpServers": {
    "prediction-markets": {
      "url": "https://prediction-markets.api.klymax402.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.

prediction

prediction_get_market_odds

Use this when you need detailed odds, probabilities, and trading data for a specific prediction market. Searches both Polymarket and Kalshi to find the best match by market ID or question text. 1. question: the full prediction market question text 2. outcomes: array of possible outcomes with their current probabilities 3. outcomePrices: decimal probabilities per outcome (0.72 = 72% implied probability) 4. volume: total all-time trading volume in USD 5. volume24h: trading volume in the last 24 hours 6. liquidity: current depth of the order book in USD 7. endDate: resolution date of the market 8. description: detailed market description and resolution criteria 9. active: whether the market is currently open for trading 10. source: which platform the market is from -- "polymarket" or "kalshi" Example output: { question: "Will ETH flip BTC by 2027?", outcomes: ["Yes", "No"], outcomePrices: { "Yes": 0.08, "No": 0.92 }, volume: 2340000, volume24h: 45000, liquidity: 120000, endDate: "2027-12-31", active: true, source: "polymarket" } Use this when a user asks about the probability of a specific event happening, election odds, or crypto predictions. Provides the crowd-sourced probability estimate backed by real money from two leading platforms. Do NOT use for crypto price data -- use token_get_price instead. Do NOT use for crypto news -- use crypto_get_news instead. Do NOT use for stock prices -- use stock_get_quote instead. Do NOT use for DeFi yields -- use defi_find_best_yields instead. Do NOT use for Hyperliquid perp data -- use hyperliquid_get_market_data instead.

prediction_list_markets

Use this when you need to browse active prediction markets or find betting odds on real-world events. Returns a list of active markets from Polymarket and Kalshi with current probabilities, trading volume, and metadata. 1. question: the prediction market question (e.g. "Will Bitcoin reach $100k by December 2026?") 2. outcomePrices: probability for each outcome as decimal (0.65 = 65% chance YES) 3. volume: total trading volume in USD 4. liquidity: current available liquidity in USD 5. endDate: when the market resolves 6. category: topic category (politics, crypto, sports, science, culture) 7. active: whether the market is currently trading 8. source: data source -- "polymarket" or "kalshi" Example output: { markets: [{ question: "Will Trump win 2028?", outcomePrices: { "Yes": 0.42, "No": 0.58 }, volume: 15420000, liquidity: 890000, endDate: "2028-11-06", category: "politics", source: "polymarket" }] } Use this to gauge public consensus on future events. Merges data from both Polymarket (crypto-native) and Kalshi (CFTC-regulated). Essential for research, forecasting, and understanding market sentiment on any topic. Do NOT use for crypto price data -- use token_get_price instead. Do NOT use for crypto news -- use crypto_get_news instead. Do NOT use for stock prices -- use stock_get_quote instead. Do NOT use for DeFi yields -- use defi_find_best_yields instead. Do NOT use for Hyperliquid perp data -- use hyperliquid_get_market_data instead.

prediction_trending_markets

Use this when you need to see what prediction markets are trending right now. Returns the hottest markets from both Polymarket and Kalshi ranked by recent trading volume and activity. 1. question: the market question 2. probability: current implied probability for the leading outcome (decimal) 3. volume24h: trading volume in the last 24 hours in USD 4. totalVolume: all-time trading volume in USD 5. priceChange24h: change in probability over the last 24 hours (e.g. +0.05 = probability rose 5%) 6. category: topic category 7. endDate: when the market resolves 8. source: data source -- "polymarket" or "kalshi" Example output: { trending: [{ question: "Will Fed cut rates in July 2026?", probability: 0.73, volume24h: 890000, totalVolume: 12500000, priceChange24h: 0.08, category: "politics", endDate: "2026-07-31", source: "polymarket" }] } Use this to discover what events the market is most interested in right now. Merges trending data from Polymarket and Kalshi. Great for finding breaking news impact, trending political events, or viral crypto bets. Do NOT use for crypto price data -- use token_get_price instead. Do NOT use for crypto news -- use crypto_get_news instead. Do NOT use for stock prices -- use stock_get_quote instead. Do NOT use for DeFi yields -- use defi_find_best_yields instead. Do NOT use for Hyperliquid perp data -- use hyperliquid_get_market_data instead.

Endpoints

URL	Transport	State	Latency	Checked
https://prediction-markets.api.klymax402.com/mcp	sse	answering	60 ms	7 min ago

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Prediction Markets API — questions

Answers built from our own checks of this server.

What can Prediction Markets API do?

It exposes 3 tools, read directly from the server on our last check. Among them: prediction_get_market_odds, prediction_list_markets, prediction_trending_markets. 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 Prediction Markets API working right now?

We send a real MCP handshake every 15 minutes. Over the last 24 hours 0 of 91 checks got a reply (0.0%), average response time 60 ms. The bar chart above shows every period we have measured.

The registry lists Prediction Markets API as active — why does it not respond?

The official MCP registry stores what the author submitted; it does not verify that the server still runs. We check the endpoint ourselves, and this one does not answer. Catalogues that copy the registry without checking will show it as working.

How do I connect Prediction Markets API?

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 Prediction Markets API need an API key?

No. Prediction Markets API 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.

Is Prediction Markets API open source?

Yes — it is published under the MIT licence, written in TypeScript and 0 stars on GitHub. The source link is on this page, so you can read exactly what it does with your data before you connect it.