Prediction Markets API

io.github.Br0ski777由 GitHub 账号 Br0ski777 发布v1.1.0更新于 Oct 24, 2026

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

已验证SSE可网页运行金融数据与分析

概览

AI 生成的概览

远程 MCP 服务器，让助手获取 Polymarket 与 Kalshi 的实时预测市场赔率、概率和成交量，按次以 USDC 通过 x402 付费。

可以做什么
  • 列出活跃预测市场，含赔率、成交量、流动性与分类，可按主题或平台筛选，并按成交量、最新或即将结束排序
  • 按市场 ID 或问题文本查询单个市场的详细赔率与交易数据，包括 24 小时成交量和结算规则
  • 查看按近期成交量和活跃度排名的热门市场，含 24 小时概率变化
适用场景
适合助手需要现实事件（选举、加密里程碑、宏观结果）当前隐含概率的场景，用于预测、研究或评论，而非获取资产价格本身。
运行要求
远程 SSE 端点 prediction-markets.api.klymax402.com，无需 API 密钥或注册。每次调用按请求以 Base L2 上的 USDC 通过 x402 协议付费，因此客户端需要能处理 402 支付挑战并重试的 x402 兼容钱包或支付组件。
安装前请注意
每次工具调用都花钱（约每次 0.008–0.012 美元 USDC，Base 网络），助手可能在无单独确认的情况下支出资金。支付需要已充值的钱包并签署 x402 挑战；服务依赖第三方结算方（Coinbase CDP、PayAI），并将查询转发至 Polymarket 和 Kalshi 数据。赔率仅供参考，不构成交易建议。

安装

在 SourceWeft 中

  1. 打开 控制台中的 Prediction Markets API，将其添加到工作区。
  2. 为需要使用其工具的对话启用该服务。

Web executable，通过 SSE。 远程服务在工作区中配置后即可从网页运行时运行。

交给智能体安装

把这段提示词粘贴到 Claude Code、Codex、Cursor 等智能体，或 SourceWeft 对话中。智能体会读取该服务器的安装指南，先向你展示发布者、端点和登录方式，经你同意后再把它添加到你的客户端。密钥不会写进任何命令。

阅读 https://sourceweft.com/mcp/io.github.Br0ski777%2Fprediction-markets/install.md，并按其中说明把这个 MCP 服务器接入我的客户端。修改任何配置之前，先告诉我它的发布者、端点和登录方式，等我确认。不要把 API 密钥写进命令或我会提交的文件；问我密钥应从哪里获取。

查看智能体所依据的安装指南

其他 MCP 客户端

把它添加到你客户端的 mcpServers 配置中。

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

README

Prediction Markets API

[MCP Server] [x402] [License: MIT]

Real-time prediction market odds from Polymarket and Kalshi. Active markets, probabilities, volume, categories. The betting intelligence layer agents need for event forecasting. Pay-per-call via x402 (USDC on Base L2) -- no API key, no signup, no rate-limit wall.

Part of the klymax402 marketplace -- 100 x402 micropayment APIs for AI agents, one wallet, USDC on Base.

Quickstart -- MCP

Add to your MCP client config (Claude Desktop, Cursor, ElizaOS, etc.):

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

Quickstart -- HTTP (x402)

bash
curl -X POST "https://prediction-markets.api.klymax402.com/api/markets" \  -H "Content-Type: application/json" \  -d '{}'# -> 402 Payment Required, with an x402 payment challenge in the response body

Any x402-aware client (@x402/fetch, x402-agent-tools, ATXP) handles the 402 -> sign -> retry cycle automatically.

Tools

ToolMethodPathPriceDescription
prediction_list_marketsPOST/api/markets$0.012List active prediction markets from Polymarket and Kalshi with current odds, volume, and categories. Filter by topic, platform, and sort by volume, newest, or closing soon.
prediction_get_market_oddsPOST/api/odds$0.012Get detailed odds and trading data for a specific prediction market by ID or search query. Searches both Polymarket and Kalshi.
prediction_trending_marketsPOST/api/trending$0.008Top trending prediction markets from Polymarket and Kalshi ranked by volume and engagement.

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.

Parameters

NameTypeRequiredDescription
categorystringnoFilter markets by topic category. Omit for all categories.
limitnumbernoNumber of markets to return (1-50). Default: 20.
sortstringnoSort order. 'volume' = highest traded, 'newest' = recently created, 'closing_soon' = ending soonest. Default: volume.
sourcestringnoFilter by platform. Omit to get markets from both Polymarket and Kalshi.

Returns

  • question -- the prediction market question (e.g. "Will Bitcoin reach $100k by December 2026?")
  • outcomePrices -- probability for each outcome as decimal (0.65 = 65% chance YES)
  • volume -- total trading volume in USD
  • liquidity -- current available liquidity in USD
  • endDate -- when the market resolves
  • category -- topic category (politics, crypto, sports, science, culture)
  • active -- whether the market is currently trading
  • source -- data source -- "polymarket" or "kalshi"

Example response:

json
{ 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" }] }

Not for: crypto price data (use token_get_price), crypto news (use crypto_get_news), stock prices (use stock_get_quote), DeFi yields (use defi_find_best_yields), Hyperliquid perp data (use hyperliquid_get_market_data).

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.

Parameters

NameTypeRequiredDescription
marketIdstringnoPolymarket condition ID or Kalshi ticker. Use this if you already know the market ID.
querystringnoSearch query to find a market by question text (e.g. 'bitcoin 100k', 'trump election'). Used when marketId is not known.

Returns

  • question -- the full prediction market question text
  • outcomes -- array of possible outcomes with their current probabilities
  • outcomePrices -- decimal probabilities per outcome (0.72 = 72% implied probability)
  • volume -- total all-time trading volume in USD
  • volume24h -- trading volume in the last 24 hours
  • liquidity -- current depth of the order book in USD
  • endDate -- resolution date of the market
  • description -- detailed market description and resolution criteria
  • active -- whether the market is currently open for trading
  • source -- which platform the market is from -- "polymarket" or "kalshi"

Example response:

json
{ 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" }

Not for: crypto price data (use token_get_price), crypto news (use crypto_get_news), stock prices (use stock_get_quote), DeFi yields (use defi_find_best_yields), Hyperliquid perp data (use hyperliquid_get_market_data).

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.

Parameters

NameTypeRequiredDescription
limitnumbernoNumber of trending markets to return (1-30). Default: 10.
sourcestringnoFilter by platform. Omit to get trending markets from both Polymarket and Kalshi.

Returns

  • question -- the market question
  • probability -- current implied probability for the leading outcome (decimal)
  • volume24h -- trading volume in the last 24 hours in USD
  • totalVolume -- all-time trading volume in USD
  • priceChange24h -- change in probability over the last 24 hours (e.g. +0.05 = probability rose 5%)
  • category -- topic category
  • endDate -- when the market resolves
  • source -- data source -- "polymarket" or "kalshi"

Example response:

json
{ 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" }] }

Not for: crypto price data (use token_get_price), crypto news (use crypto_get_news), stock prices (use stock_get_quote), DeFi yields (use defi_find_best_yields), Hyperliquid perp data (use hyperliquid_get_market_data).

Example agent prompts

  • "Browse active prediction markets or find betting odds on real-world events"
  • "Detailed odds, probabilities, and trading data for a specific prediction market"
  • "See what prediction markets are trending right now"

Payment

  • Protocol: x402 -- HTTP-native pay-per-call, no signup, no API key
  • Network: Base L2 (eip155:8453)
  • Asset: USDC
  • Facilitator: Coinbase CDP (primary), PayAI (fallback)
  • Also reachable via ATXP (OAuth-wrapped x402, RFC 9728 protected-resource metadata)

Part of klymax402

100 x402 micropayment APIs for AI agents -- one wallet, USDC on Base, zero signup.

License

MIT

来源：README.md，提交 c8aa4d5

工具

0
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版本历史

1
  1. v1.1.0最新Sep 16, 2026

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