Is the Prediction Markets API MCP server free to use?

Yes. Prediction Markets API is listed on AllMCPs as a free, open Model Context Protocol server you can install into Claude Desktop, Cursor, or any MCP-compatible client.

Is the Prediction Markets API MCP server free to use?

Yes. Prediction Markets API is listed on AllMCPs as a free, open Model Context Protocol server you can install into Claude Desktop, Cursor, or any MCP-compatible client.

Prediction Markets API

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

Quick Install

Automated & IDE Setup

Copy the AI prompt to install this server into Claude Code, Cursor, or another agent — or use 1-click editor setup below.

Add to Cursor Add to VS Code

Manual Client & Custom JSON ConfigExpand JSON ▾

Install Config Generator

Choose your client

claude_desktop_config.json

{
  "mcpServers": {
    "prediction-markets-api": {
      "command": "npx",
      "args": [
        "-y",
        "prediction-markets-api"
      ]
    }
  }
}

💡 Paste into ~/Library/Application Support/Claude/claude_desktop_config.json (macOS) or %APPDATA%\Claude\claude_desktop_config.json (Windows)

Documentation Overview

Prediction Markets API

Real-time prediction market odds and probabilities from Polymarket and Kalshi. Browse active markets, get detailed odds on specific events, and discover trending bets -- all via x402 micropayments. Merges data from both platforms so agents get the most complete view of market sentiment.

What It Does / Endpoints

Endpoint	Price	Description
`POST /api/markets`	$0.005	List active prediction markets with odds, volume, categories from both Polymarket and Kalshi
`POST /api/odds`	$0.005	Detailed odds for a specific market (by ID or search query) -- searches both platforms
`POST /api/trending`	$0.003	Top trending markets ranked by volume from both sources

Example Request / Response

List Markets

Terminal

curl -X POST https://prediction-markets-production.up.railway.app/api/markets \
  -H "Content-Type: application/json" \
  -d '{"category": "politics", "limit": 5, "sort": "volume"}'

config.json

{
  "markets": [
    {
      "id": "0x1234...",
      "question": "Will Trump win the 2028 presidential election?",
      "outcomes": ["Yes", "No"],
      "outcomePrices": { "Yes": 0.42, "No": 0.58 },
      "volume": 15420000,
      "volume24h": 234000,
      "liquidity": 890000,
      "endDate": "2028-11-06T00:00:00Z",
      "category": "politics",
      "active": true,
      "source": "polymarket"
    },
    {
      "id": "PRES-2028-DEM",
      "question": "Will a Democrat win the 2028 presidential election?",
      "outcomes": ["Yes", "No"],
      "outcomePrices": { "Yes": 0.55, "No": 0.45 },
      "volume": 8200000,
      "volume24h": 0,
      "liquidity": 0,
      "endDate": "2028-11-06T00:00:00Z",
      "category": "politics",
      "active": true,
      "source": "kalshi"
    }
  ],
  "count": 5,
  "sort": "volume",
  "category": "politics",
  "source": "polymarket+kalshi"
}

Filter by platform:

Terminal

curl -X POST https://prediction-markets-production.up.railway.app/api/markets \
  -H "Content-Type: application/json" \
  -d '{"source": "kalshi", "limit": 5}'

Get Odds (Search by Query)

Terminal

curl -X POST https://prediction-markets-production.up.railway.app/api/odds \
  -H "Content-Type: application/json" \
  -d '{"query": "bitcoin 100k"}'

config.json

{
  "id": "0xabcd...",
  "question": "Will Bitcoin reach $100k by December 2026?",
  "outcomes": ["Yes", "No"],
  "outcomePrices": { "Yes": 0.65, "No": 0.35 },
  "volume": 8900000,
  "volume24h": 120000,
  "liquidity": 450000,
  "endDate": "2026-12-31T00:00:00Z",
  "category": "crypto",
  "active": true,
  "source": "polymarket",
  "matchedFrom": 3
}

Trending Markets

Terminal

curl -X POST https://prediction-markets-production.up.railway.app/api/trending \
  -H "Content-Type: application/json" \
  -d '{"limit": 5}'

config.json

{
  "trending": [
    {
      "id": "0x5678...",
      "question": "Will the Fed cut rates in July 2026?",
      "probability": 0.73,
      "outcomePrices": { "Yes": 0.73, "No": 0.27 },
      "volume24h": 890000,
      "totalVolume": 12500000,
      "category": "politics",
      "endDate": "2026-07-31T00:00:00Z",
      "active": true,
      "source": "polymarket"
    },
    {
      "id": "FED-RATE-JUL26",
      "question": "Will the Fed cut rates in July 2026?",
      "probability": 0.71,
      "outcomePrices": { "Yes": 0.71, "No": 0.29 },
      "volume24h": 0,
      "totalVolume": 5400000,
      "category": "politics",
      "endDate": "2026-07-31T00:00:00Z",
      "active": true,
      "source": "kalshi"
    }
  ],
  "count": 5,
  "source": "polymarket+kalshi"
}

Use Cases

Election odds: Get real-time probabilities on political outcomes backed by real money from both crypto-native (Polymarket) and CFTC-regulated (Kalshi) platforms
Crypto predictions: Check market consensus on price targets, ETF approvals, protocol upgrades
Event forecasting: Find the crowd-sourced probability of any major world event
Cross-platform comparison: Compare odds between Polymarket and Kalshi for the same events
Research & analysis: Use prediction market data as a signal for decision-making
News impact: See how breaking events shift market probabilities in real time

MCP Integration

Add to your Claude Desktop or Cursor MCP config:

config.json

{
  "mcpServers": {
    "prediction-markets": {
      "url": "https://prediction-markets-production.up.railway.app/sse"
    }
  }
}

Tools available via MCP:

prediction_list_markets -- Browse active markets by category, sort, and platform (Polymarket or Kalshi)
prediction_get_market_odds -- Get detailed odds by market ID or search query (searches both platforms)
prediction_trending_markets -- Discover trending markets by volume from both sources

Payment

All endpoints are gated by x402 micropayments (USDC on Base L2). Agents pay automatically per call -- no API keys, no subscriptions.

Related APIs

Trust Score API -- Verify domain/wallet trust before interacting
Token Price API -- Real-time crypto token prices
Crypto News API -- Latest crypto news and sentiment
DeFi Yields API -- Best DeFi yield opportunities
Hyperliquid API -- Perpetual futures market data

Related MCP Servers

View all in Finance & Fintech View all alternatives

Frequently Asked Questions about Prediction Markets API

Add the following block to your claude_desktop_config.json under mcpServers: "mcpServers": { "prediction-markets-api": { "command": "npx", "args": ["-y", "Prediction Markets API"] } }

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Technical Specs & Signals

CategoryFinance & Fintech

27Quality signal: Emerging · 27/100How this signal is calculated ▾

Server availabilityNot measured

Not scored for repo-hosted servers — we can't reach the running server, only its GitHub page. Hosted MCP endpoints are health-checked live.

Verified ownership8/20

Documentation & tools11/30

Adoption & activity1/15

Community engagement0/10

A guidance signal from public completeness & health data — not a user rating. New listings start lower and rise as they add docs, get verified, and grow adoption. Signals we can't observe for a listing are skipped, not counted against it.

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More in 💰 Finance & Fintech →Best MCP servers for Finance & Fintech →Alternatives to Prediction Markets API →Install in Claude Desktop Install in Cursor Install in VS Code

Prediction Markets API

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

Quick Install

Automated & IDE Setup

Copy the AI prompt to install this server into Claude Code, Cursor, or another agent — or use 1-click editor setup below.

Add to Cursor Add to VS Code

Manual Client & Custom JSON ConfigExpand JSON ▾

Install Config Generator

Choose your client

claude_desktop_config.json

{
  "mcpServers": {
    "prediction-markets-api": {
      "command": "npx",
      "args": [
        "-y",
        "prediction-markets-api"
      ]
    }
  }
}

💡 Paste into ~/Library/Application Support/Claude/claude_desktop_config.json (macOS) or %APPDATA%\Claude\claude_desktop_config.json (Windows)

Documentation Overview

Prediction Markets API

What It Does / Endpoints

Endpoint	Price	Description
`POST /api/markets`	$0.005	List active prediction markets with odds, volume, categories from both Polymarket and Kalshi
`POST /api/odds`	$0.005	Detailed odds for a specific market (by ID or search query) -- searches both platforms
`POST /api/trending`	$0.003	Top trending markets ranked by volume from both sources

Example Request / Response

List Markets

Terminal

curl -X POST https://prediction-markets-production.up.railway.app/api/markets \
  -H "Content-Type: application/json" \
  -d '{"category": "politics", "limit": 5, "sort": "volume"}'

config.json

{
  "markets": [
    {
      "id": "0x1234...",
      "question": "Will Trump win the 2028 presidential election?",
      "outcomes": ["Yes", "No"],
      "outcomePrices": { "Yes": 0.42, "No": 0.58 },
      "volume": 15420000,
      "volume24h": 234000,
      "liquidity": 890000,
      "endDate": "2028-11-06T00:00:00Z",
      "category": "politics",
      "active": true,
      "source": "polymarket"
    },
    {
      "id": "PRES-2028-DEM",
      "question": "Will a Democrat win the 2028 presidential election?",
      "outcomes": ["Yes", "No"],
      "outcomePrices": { "Yes": 0.55, "No": 0.45 },
      "volume": 8200000,
      "volume24h": 0,
      "liquidity": 0,
      "endDate": "2028-11-06T00:00:00Z",
      "category": "politics",
      "active": true,
      "source": "kalshi"
    }
  ],
  "count": 5,
  "sort": "volume",
  "category": "politics",
  "source": "polymarket+kalshi"
}

Filter by platform:

Terminal

curl -X POST https://prediction-markets-production.up.railway.app/api/markets \
  -H "Content-Type: application/json" \
  -d '{"source": "kalshi", "limit": 5}'

Get Odds (Search by Query)

Terminal

curl -X POST https://prediction-markets-production.up.railway.app/api/odds \
  -H "Content-Type: application/json" \
  -d '{"query": "bitcoin 100k"}'

config.json

{
  "id": "0xabcd...",
  "question": "Will Bitcoin reach $100k by December 2026?",
  "outcomes": ["Yes", "No"],
  "outcomePrices": { "Yes": 0.65, "No": 0.35 },
  "volume": 8900000,
  "volume24h": 120000,
  "liquidity": 450000,
  "endDate": "2026-12-31T00:00:00Z",
  "category": "crypto",
  "active": true,
  "source": "polymarket",
  "matchedFrom": 3
}

Trending Markets

Terminal

curl -X POST https://prediction-markets-production.up.railway.app/api/trending \
  -H "Content-Type: application/json" \
  -d '{"limit": 5}'

config.json

{
  "trending": [
    {
      "id": "0x5678...",
      "question": "Will the Fed cut rates in July 2026?",
      "probability": 0.73,
      "outcomePrices": { "Yes": 0.73, "No": 0.27 },
      "volume24h": 890000,
      "totalVolume": 12500000,
      "category": "politics",
      "endDate": "2026-07-31T00:00:00Z",
      "active": true,
      "source": "polymarket"
    },
    {
      "id": "FED-RATE-JUL26",
      "question": "Will the Fed cut rates in July 2026?",
      "probability": 0.71,
      "outcomePrices": { "Yes": 0.71, "No": 0.29 },
      "volume24h": 0,
      "totalVolume": 5400000,
      "category": "politics",
      "endDate": "2026-07-31T00:00:00Z",
      "active": true,
      "source": "kalshi"
    }
  ],
  "count": 5,
  "source": "polymarket+kalshi"
}

Use Cases

Election odds: Get real-time probabilities on political outcomes backed by real money from both crypto-native (Polymarket) and CFTC-regulated (Kalshi) platforms
Crypto predictions: Check market consensus on price targets, ETF approvals, protocol upgrades
Event forecasting: Find the crowd-sourced probability of any major world event
Cross-platform comparison: Compare odds between Polymarket and Kalshi for the same events
Research & analysis: Use prediction market data as a signal for decision-making
News impact: See how breaking events shift market probabilities in real time

MCP Integration

Add to your Claude Desktop or Cursor MCP config:

config.json

{
  "mcpServers": {
    "prediction-markets": {
      "url": "https://prediction-markets-production.up.railway.app/sse"
    }
  }
}

Tools available via MCP:

prediction_list_markets -- Browse active markets by category, sort, and platform (Polymarket or Kalshi)
prediction_get_market_odds -- Get detailed odds by market ID or search query (searches both platforms)
prediction_trending_markets -- Discover trending markets by volume from both sources

Payment

All endpoints are gated by x402 micropayments (USDC on Base L2). Agents pay automatically per call -- no API keys, no subscriptions.

Related APIs

Trust Score API -- Verify domain/wallet trust before interacting
Token Price API -- Real-time crypto token prices
Crypto News API -- Latest crypto news and sentiment
DeFi Yields API -- Best DeFi yield opportunities
Hyperliquid API -- Perpetual futures market data

Related MCP Servers

View all in Finance & Fintech View all alternatives

Frequently Asked Questions about Prediction Markets API

Add the following block to your claude_desktop_config.json under mcpServers: "mcpServers": { "prediction-markets-api": { "command": "npx", "args": ["-y", "Prediction Markets API"] } }

AllMCPs Directory Badge

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Showcase your server listing on GitHub or your project documentation. Embed this dynamic SVG badge to highlight official listing status and live engagement.

Badge Style:

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Markdown (GitHub README)

[![AllMCPs](https://allmcps.com/api/badge/prediction-markets-api?style=directory)](https://allmcps.com/mcp/prediction-markets-api)

HTML Embed

<a href="https://allmcps.com/mcp/prediction-markets-api"><img src="https://allmcps.com/api/badge/prediction-markets-api?style=directory" alt="Prediction Markets API on AllMCPs" /></a>

Technical Specs & Signals

CategoryFinance & Fintech

27Quality signal: Emerging · 27/100How this signal is calculated ▾

Server availabilityNot measured

Not scored for repo-hosted servers — we can't reach the running server, only its GitHub page. Hosted MCP endpoints are health-checked live.

Verified ownership8/20

Documentation & tools11/30

Adoption & activity1/15

Community engagement0/10

★ Spotlight Slot

Feature Your MCP Server

Get maximum visibility for your server across our directory, search results, and detail pages.

Spotlight Your Server

Own this project?

This directory is pre-filled from public sources. Claim via GitHub README, site badge, or DNS TXT to get the verified badge and attach your website.

Free dofollow backlink: after claiming, verify your product site and place a dofollow AllMCPs badge — we recheck it stays live.

Claim & get free dofollow

Share & Embed

Add our SVG badge (dark/light directory styles) or embeddable widget to your site.

Explore more

More in 💰 Finance & Fintech →Best MCP servers for Finance & Fintech →Alternatives to Prediction Markets API →Install in Claude Desktop Install in Cursor Install in VS Code