Prediction Markets API MCP Server
io.github.Br0ski777/prediction-markets
answering
Prediction Markets API is answering right now. Last checked 3 min ago. It exposes 3 tools. Last commit 19 Jul 2026.
Prediction market odds from Polymarket. Active markets, probabilities, volume. x402.
Uptime history
42 hours of history
42 hours agonow
100.0%
Uptime 24h
91 of 91 checks
3
Tools
read from the server
36 ms
Response time
average over 24h
0
Stars
last commit 19 Jul 2026
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.
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 | 38 ms | 3 min ago |
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 91 of 91 checks got a reply (100.0%), average response time 36 ms. The bar chart above shows every period we have measured.
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.
How fast is Prediction Markets API?
It answers our handshake in 36 ms on average, which is faster than 98% of all working MCP servers we measure. That puts it in the quick quarter of the ecosystem. The comparison comes from our own checks across the whole registry, every 15 minutes.
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.