{"id":2836,"date":"2026-04-17T10:00:00","date_gmt":"2026-04-17T10:00:00","guid":{"rendered":"https:\/\/oddspapi.io\/blog\/?p=2836"},"modified":"2026-04-11T16:37:08","modified_gmt":"2026-04-11T16:37:08","slug":"sx-bet-api-crypto-sports-exchange","status":"publish","type":"post","link":"https:\/\/oddspapi.io\/blog\/sx-bet-api-crypto-sports-exchange\/","title":{"rendered":"SX Bet API: Access Crypto Sports Exchange Odds (Python)"},"content":{"rendered":"<h2>Looking for the SX Bet API? Here&#8217;s the Part Their Docs Bury<\/h2>\n<p>SX Bet is one of the few real sports betting exchanges left. Peer-to-peer, non-custodial, settled onchain on Polygon. No house, no cut on the winning side, actual sharp pricing. It&#8217;s exactly what you want if you&#8217;re building a trading bot.<\/p>\n<p>Then you open <a href=\"https:\/\/sx.bet\/developers\" rel=\"noopener\" target=\"_blank\">their API docs<\/a> and realize what &#8220;onchain P2P&#8221; actually costs you.<\/p>\n<figure class=\"wp-block-table\">\n<table>\n<thead>\n<tr>\n<th>Requirement<\/th>\n<th>Reality<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td><strong>Wallet<\/strong><\/td>\n<td>You need a funded Polygon wallet signed into SX&#8217;s auth flow<\/td>\n<\/tr>\n<tr>\n<td><strong>Signatures<\/strong><\/td>\n<td>Every authenticated request signs an EIP-712 typed message<\/td>\n<\/tr>\n<tr>\n<td><strong>Market IDs<\/strong><\/td>\n<td>32-byte hex hashes, not human names. You resolve them yourself.<\/td>\n<\/tr>\n<tr>\n<td><strong>Odds Format<\/strong><\/td>\n<td>Native format is <code>10^20<\/code>-scaled implied probability, not decimal<\/td>\n<\/tr>\n<tr>\n<td><strong>Order Books<\/strong><\/td>\n<td>Cross-maker ladders you stitch together from the <code>\/orders<\/code> endpoint<\/td>\n<\/tr>\n<tr>\n<td><strong>Other Bookmakers<\/strong><\/td>\n<td>SX Bet only. Want to compare vs Pinnacle or Betfair? Build a second integration.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/figure>\n<p>If all you want is the price, you&#8217;re building half an ETH wallet and a market resolver before you write your first line of betting logic.<\/p>\n<h2>The &#8220;Third Option&#8221; for SX Bet Odds<\/h2>\n<p>OddsPapi aggregates 350+ bookmakers behind one API key \u2014 and yes, SX Bet is one of them. No wallet, no EIP-712 signatures, no hex market hashes. You query <code>?bookmakers=sx.bet<\/code> on a fixture and get the same back\/lay prices SX is showing its users, already decoded into decimal odds with order book depth attached.<\/p>\n<figure class=\"wp-block-table\">\n<table>\n<thead>\n<tr>\n<th>Feature<\/th>\n<th>SX Bet Direct API<\/th>\n<th>OddsPapi<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td><strong>Auth<\/strong><\/td>\n<td>EIP-712 signed requests from a Polygon wallet<\/td>\n<td>Single API key as query param<\/td>\n<\/tr>\n<tr>\n<td><strong>Wallet Required<\/strong><\/td>\n<td>Yes, funded on Polygon<\/td>\n<td>No<\/td>\n<\/tr>\n<tr>\n<td><strong>Odds Format<\/strong><\/td>\n<td>Implied prob \u00d7 10^20 (you convert)<\/td>\n<td>Decimal, ready to use<\/td>\n<\/tr>\n<tr>\n<td><strong>Other Exchanges<\/strong><\/td>\n<td>SX only<\/td>\n<td>SX + Betfair + ProphetX + 4casters + Polymarket + Kalshi<\/td>\n<\/tr>\n<tr>\n<td><strong>Sharp Bookmakers<\/strong><\/td>\n<td>None<\/td>\n<td>Pinnacle, SBOBet, Singbet included<\/td>\n<\/tr>\n<tr>\n<td><strong>Historical Data<\/strong><\/td>\n<td>Not offered<\/td>\n<td>Included on free tier<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/figure>\n<h2>What SX Bet Actually Is (And Why Devs Care)<\/h2>\n<p>SX Bet is a peer-to-peer sports betting exchange running on the SX Network, a Polygon-based L2 purpose-built for prediction markets. It&#8217;s crypto-native \u2014 you deposit USDC, bets settle onchain, and makers\/takers transact without a central sportsbook. Because the book is P2P, you get two things you don&#8217;t get from a traditional sportsbook:<\/p>\n<ul>\n<li><strong>Back AND lay prices<\/strong> on every market \u2014 you can bet for <em>or<\/em> against an outcome.<\/li>\n<li><strong>True order book depth<\/strong> \u2014 multiple price levels with the size available at each, not a single &#8220;fair price&#8221; quote.<\/li>\n<\/ul>\n<p>That&#8217;s the data trading bots actually want. The problem is getting to it without writing an EIP-712 signer.<\/p>\n<h2>The JSON Shape (This Is the Part That Matters)<\/h2>\n<p>When you pull an SX Bet fixture through OddsPapi, every outcome hangs an <code>exchangeMeta<\/code> block off the main price. For active, tradable markets, that block is a back\/lay ladder:<\/p>\n<pre class=\"wp-block-code\"><code># SX Bet active-market exchangeMeta shape\n{\n  \"active\": true,\n  \"betslip\": \"https:\/\/sx.bet\/events\/L15956975\",\n  \"bookmakerOutcomeId\": \"0xa661c6ffde36bb293d13a1d4de9ed690eabdfeae33dce54449cd16f877d07ae5\",\n  \"price\": 4.624,\n  \"limit\": 14.09,\n  \"exchangeMeta\": {\n    \"back\": [\n      {\"price\": 4.624, \"size\": 14.09, \"limit\": 14.09}\n    ],\n    \"lay\": []\n  }\n}<\/code><\/pre>\n<p>A few things to notice:<\/p>\n<ul>\n<li><strong><code>price<\/code><\/strong> is already decimal odds. No 10^20 conversion. Divide 1 by it if you want implied probability.<\/li>\n<li><strong><code>bookmakerOutcomeId<\/code><\/strong> is the 32-byte SX market hash (<code>0x...<\/code>) \u2014 drop this straight into SX&#8217;s onchain calls if you need deep-book context.<\/li>\n<li><strong><code>betslip<\/code><\/strong> is a direct deep link into the SX Bet UI for the event. Useful for building dashboards.<\/li>\n<li><strong><code>limit<\/code><\/strong> is the size (in USDC) available at the top of the ladder.<\/li>\n<li><strong><code>exchangeMeta.back<\/code><\/strong> and <strong><code>.lay<\/code><\/strong> give you the full ladder. Empty list on one side means that side has no open orders \u2014 not unusual for niche markets.<\/li>\n<\/ul>\n<p>You will also see a second shape on inactive or reference markets, where <code>exchangeMeta<\/code> is a <em>list<\/em> of market-maker quotes instead of a back\/lay object. Always check <code>outcome['active']<\/code> before reading the ladder.<\/p>\n<h2>Tutorial: Get SX Bet Odds in Python<\/h2>\n<h3>Step 1: Grab Your API Key<\/h3>\n<p>Sign up at <a href=\"https:\/\/oddspapi.io\">oddspapi.io<\/a>. Free tier. Authentication is one query parameter, no wallet connect.<\/p>\n<pre class=\"wp-block-code\"><code>import requests\n\nAPI_KEY = \"YOUR_API_KEY\"\nBASE_URL = \"https:\/\/api.oddspapi.io\/v4\"<\/code><\/pre>\n<h3>Step 2: Find a Fixture with SX Bet Liquidity<\/h3>\n<p>SX Bet carries depth on soccer, MLB, NHL, tennis and MMA in particular. Grab tomorrow&#8217;s soccer fixtures and look for one that has odds.<\/p>\n<pre class=\"wp-block-code\"><code>from datetime import datetime, timezone, timedelta\n\ntoday = datetime.now(timezone.utc)\nparams = {\n    \"apiKey\": API_KEY,\n    \"sportId\": 10,  # Soccer\n    \"from\": today.strftime(\"%Y-%m-%d\"),\n    \"to\": (today + timedelta(days=3)).strftime(\"%Y-%m-%d\"),\n}\nfixtures = requests.get(f\"{BASE_URL}\/fixtures\", params=params).json()\n\n# Filter to fixtures that have odds available\ncandidates = [f for f in fixtures if f.get(\"hasOdds\")]\nprint(f\"{len(candidates)} soccer fixtures with odds\")<\/code><\/pre>\n<h3>Step 3: Fetch SX Bet Odds (Filtered)<\/h3>\n<p>Pass <code>bookmakers=sx.bet<\/code> to return only the exchange. Fetch multiple slugs in one call if you want side-by-side comparison.<\/p>\n<pre class=\"wp-block-code\"><code>fixture_id = candidates[0][\"fixtureId\"]\n\nresponse = requests.get(\n    f\"{BASE_URL}\/odds\",\n    params={\n        \"apiKey\": API_KEY,\n        \"fixtureId\": fixture_id,\n        \"bookmakers\": \"sx.bet\",\n    },\n)\ndata = response.json()\n\nsx = data.get(\"bookmakerOdds\", {}).get(\"sx.bet\")\nif not sx:\n    print(\"SX Bet has no book on this fixture \u2014 try another.\")\nelse:\n    print(f\"{len(sx['markets'])} markets from SX Bet\")<\/code><\/pre>\n<h3>Step 4: Parse the Back\/Lay Ladder<\/h3>\n<p>Market <code>101<\/code> is Full Time Result (1X2). Outcomes <code>101<\/code>, <code>102<\/code>, <code>103<\/code> are Home, Draw, Away.<\/p>\n<pre class=\"wp-block-code\"><code>market = sx[\"markets\"][\"101\"]\nlabels = {\"101\": \"Home\", \"102\": \"Draw\", \"103\": \"Away\"}\n\nfor outcome_id, label in labels.items():\n    outcome = market[\"outcomes\"].get(outcome_id)\n    if not outcome:\n        continue\n\n    player = outcome[\"players\"][\"0\"]\n    if not player[\"active\"]:\n        print(f\"{label}: inactive\")\n        continue\n\n    meta = player.get(\"exchangeMeta\", {})\n\n    # Handle both shapes: {back: [...], lay: [...]} for active markets,\n    # or a list for reference quotes.\n    if isinstance(meta, dict):\n        back = meta.get(\"back\", [])\n        lay = meta.get(\"lay\", [])\n        best_back = back[0][\"price\"] if back else None\n        best_lay = lay[0][\"price\"] if lay else None\n    else:\n        best_back = player[\"price\"]\n        best_lay = None\n\n    print(f\"{label}: back @ {best_back} | lay @ {best_lay}\")<\/code><\/pre>\n<p>Output:<\/p>\n<pre class=\"wp-block-code\"><code>Home: back @ 1.303 | lay @ None\nDraw: back @ 4.624 | lay @ None\nAway: back @ 2.156 | lay @ None<\/code><\/pre>\n<h3>Step 5: Compare SX Bet vs Pinnacle in One Call<\/h3>\n<p>The whole point of the aggregator is that you can pull SX and a sharp in the same request and flag price differences instantly.<\/p>\n<pre class=\"wp-block-code\"><code>response = requests.get(\n    f\"{BASE_URL}\/odds\",\n    params={\n        \"apiKey\": API_KEY,\n        \"fixtureId\": fixture_id,\n        \"bookmakers\": \"sx.bet,pinnacle,betfair-ex\",\n    },\n)\nbooks = response.json()[\"bookmakerOdds\"]\n\nfor slug, data in books.items():\n    market = data.get(\"markets\", {}).get(\"101\", {})\n    home = market.get(\"outcomes\", {}).get(\"101\", {}).get(\"players\", {}).get(\"0\", {})\n    price = home.get(\"price\")\n    print(f\"{slug:12} home @ {price}\")<\/code><\/pre>\n<p>Output:<\/p>\n<pre class=\"wp-block-code\"><code>sx.bet       home @ 1.303\npinnacle     home @ 1.32\nbetfair-ex   home @ 1.31<\/code><\/pre>\n<p>Three exchanges and one sharp book in a single HTTP round trip. That&#8217;s the workflow.<\/p>\n<h2>Why Devs Choose OddsPapi Over SX Bet&#8217;s Direct API<\/h2>\n<p><strong>No wallet required<\/strong> \u2014 You get SX&#8217;s pricing without touching a Polygon signer. If all you need is the read side of the API, this saves you the entire onchain plumbing layer.<\/p>\n<p><strong>Already decoded<\/strong> \u2014 Decimal odds, back\/lay split, order book depth, and a deep link to the SX Bet event UI, all in one JSON blob.<\/p>\n<p><strong>350+ other bookmakers in the same response<\/strong> \u2014 SX Bet is great pricing, but you want to compare it against Pinnacle, Betfair Exchange, ProphetX, and whichever sharps you trust. One API, one call.<\/p>\n<p><strong>Free historical data<\/strong> \u2014 SX Bet doesn&#8217;t ship a historical API. OddsPapi does, and it&#8217;s free on the entry tier \u2014 hit <code>\/v4\/historical-odds?fixtureId=...&amp;bookmakers=sx.bet<\/code> and backtest your exchange strategy.<\/p>\n<h2>Which Sports SX Bet Actually Covers<\/h2>\n<p>At the time of writing, SX Bet has consistent liquidity on:<\/p>\n<figure class=\"wp-block-table\">\n<table>\n<thead>\n<tr>\n<th>Sport<\/th>\n<th>OddsPapi <code>sportId<\/code><\/th>\n<th>Typical Coverage<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Soccer<\/td>\n<td>10<\/td>\n<td>Full match + halves, major leagues<\/td>\n<\/tr>\n<tr>\n<td>MLB<\/td>\n<td>13<\/td>\n<td>Moneyline, run lines, totals<\/td>\n<\/tr>\n<tr>\n<td>NHL<\/td>\n<td>15<\/td>\n<td>Moneyline, puck line, totals<\/td>\n<\/tr>\n<tr>\n<td>Tennis<\/td>\n<td>12<\/td>\n<td>Match winner, set winner<\/td>\n<\/tr>\n<tr>\n<td>MMA<\/td>\n<td>20<\/td>\n<td>Fight winner<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/figure>\n<p>Filter fixtures by <code>sportId<\/code>, then pull <code>?bookmakers=sx.bet<\/code> on the ones that have <code>hasOdds: true<\/code>. Niche fixtures (lower leagues, obscure sports) will frequently return an empty book \u2014 that&#8217;s not an API failure, SX Bet&#8217;s P2P ladders just haven&#8217;t been quoted yet.<\/p>\n<h2>Get Started<\/h2>\n<p>Stop writing EIP-712 signers. Pull SX Bet odds with a single HTTP request.<\/p>\n<ol>\n<li>Sign up at <a href=\"https:\/\/oddspapi.io\">oddspapi.io<\/a><\/li>\n<li>Copy your API key<\/li>\n<li>Pull SX Bet&#8217;s book in one curl<\/li>\n<\/ol>\n<pre class=\"wp-block-code\"><code>curl \"https:\/\/api.oddspapi.io\/v4\/odds?apiKey=YOUR_KEY&amp;fixtureId=id1000003761320199&amp;bookmakers=sx.bet\"<\/code><\/pre>\n<p>No wallet. No signed messages. No hex market hashes. Just decimal odds with the full back\/lay ladder attached.<\/p>\n<p><!--\nFocus Keyphrase: SX Bet API\nSEO Title: SX Bet API: Access Crypto Sports Exchange Odds (Python)\nMeta Description: Skip EIP-712 signatures and wallet auth. Pull SX Bet back\/lay odds with a free API key. Python tutorial with tested code examples.\nSlug: sx-bet-api-crypto-sports-exchange\n--><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Skip EIP-712 signatures and wallet auth. Pull SX Bet back\/lay odds with a free API key. Python tutorial with tested code examples.<\/p>\n","protected":false},"author":2,"featured_media":2837,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[7],"tags":[27,37,9,11,36],"class_list":["post-2836","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-how-to-guides","tag-crypto","tag-exchange","tag-odds-api","tag-python","tag-sx-bet"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.4 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>SX Bet API: Access Crypto Sports Exchange Odds (Python) | Odds API Development Blog<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/oddspapi.io\/blog\/sx-bet-api-crypto-sports-exchange\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"SX Bet API: Access Crypto Sports Exchange Odds (Python) | Odds API Development Blog\" \/>\n<meta property=\"og:description\" content=\"Skip EIP-712 signatures and wallet auth. 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