How do I install Prediction Markets API?

Copy the http config for Cursor, Claude Desktop, Claude Code, or VS Code on this page. It uses the publisher's install, not a PlugMCP proxy.

Does Prediction Markets API need an API key?

No required environment variable is listed on this record.

What transport does Prediction Markets API use?

Prediction Markets API is reached over HTTP.

When was Prediction Markets API last checked?

Last checked 2026-11-08. Prediction market odds from Polymarket. Active markets, probabilities, volume. x402.

Prediction Markets API MCP server

Power your agent

Add this server

The publisher's own URL. Not a PlugMCP endpoint.

Add to Cursor Add in Claude Add to VS Code Run on PlugMCP

Host a copy with our keys and logs.

Server URL

https://prediction-markets.api.klymax402.com/mcp

The Claude button above opens Claude with the name and URL filled in. You still confirm it there.

shClaude Code

1claude mcp add --transport http io.github.br0ski777-prediction-markets https://prediction-markets.api.klymax402.com/mcp

Run in a terminal.

jsonClaude Desktop

1{2  "mcpServers": {3    "io.github.br0ski777-prediction-markets": {4      "command": "npx",5      "args": [6        "-y",7        "mcp-remote",8        "https://prediction-markets.api.klymax402.com/mcp"9      ]10    }11  }12}

claude_desktop_config.json

Remote · HTTPPublisher installStep-by-step: add this in Claude

Remote URL or a command on your machine? How the two installs differ

Run on PlugMCP

Host a copy with our keys and logs.

A new server you create. It is not this listing's official endpoint. Use the publisher install when you want their URL and their credentials.

Launch

Server facts

Remote

Transport: http
Version: 1.1.0
Last checked

Tools

No tool list yet. Remote servers get one after the first health check.

FAQ

Questions

Prediction Markets API

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.):

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

Quickstart -- HTTP (x402)

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

Tool	Method	Path	Price	Description
`prediction_list_markets`	POST	`/api/markets`	$0.012	List 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_odds`	POST	`/api/odds`	$0.012	Get detailed odds and trading data for a specific prediction market by ID or search query. Searches both Polymarket and Kalshi.
`prediction_trending_markets`	POST	`/api/trending`	$0.008	Top 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

Name	Type	Required	Description
`category`	string	no	Filter markets by topic category. Omit for all categories.
`limit`	number	no	Number of markets to return (1-50). Default: 20.
`sort`	string	no	Sort order. 'volume' = highest traded, 'newest' = recently created, 'closing_soon' = ending soonest. Default: volume.
`source`	string	no	Filter 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:

{ 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

Name	Type	Required	Description
`marketId`	string	no	Polymarket condition ID or Kalshi ticker. Use this if you already know the market ID.
`query`	string	no	Search 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:

{ 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" }

`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

Name	Type	Required	Description
`limit`	number	no	Number of trending markets to return (1-30). Default: 10.
`source`	string	no	Filter 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:

{ 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" }] }

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.

Catalog: https://klymax402.com/llms.txt
Full API reference: https://klymax402.com/llms-full.txt
Live stats: https://klymax402.com/stats

License

MIT

Add this server

Host a copy with our keys and logs.

Server facts

Tools

Questions

How do I install Prediction Markets API?

Does Prediction Markets API need an API key?

What transport does Prediction Markets API use?

When was Prediction Markets API last checked?

Documentation

Prediction Markets API

Quickstart -- MCP

Quickstart -- HTTP (x402)

Tools

prediction_list_markets

prediction_get_market_odds

prediction_trending_markets

Example agent prompts

Payment

Part of klymax402

License

`prediction_list_markets`

`prediction_get_market_odds`

`prediction_trending_markets`