index.html

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<title>Blockchain Lab Open Data API — free blockchain datasets (chains, TVL, stablecoins, yields, L2s, hacks, RPC health, EIPs)</title>
<meta name="description" content="Free static JSON API for blockchain builders: EVM chains & RPCs, DeFi TVL, hackathons, events, 600+ whitepapers, glossary, grants, EIPs/ERCs/BIPs. Rebuilt nightly. Built by Blockchain Lab.">
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<meta property="og:title" content="Blockchain Lab Open Data API"><meta property="og:description" content="Free, CORS-enabled blockchain datasets rebuilt nightly from public sources."><meta property="og:image" content="https://blockchains.github.io/blockchainlab-api/social-preview.png">
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<header><div class="pill">Built by <a href="https://blockchainlab.com/?utm_source=github&utm_medium=open-data-api&utm_campaign=blockchainlab-api">Blockchain Lab — blockchainlab.com</a></div>
<h1>Blockchain Lab Open Data API</h1>
<p class="mut">Static, free, CORS-enabled JSON. No key. Rebuilt nightly by GitHub Actions from public sources — every dataset names its source URL. <a href="openapi.yaml">OpenAPI 3.1 (YAML)</a> · <a href="openapi.json">JSON</a> · <a href="swagger.html">Interactive docs</a> · <a href="https://github.com/Blockchains/blockchainlab-api">GitHub</a></p></header>
<main>
<pre>curl https://blockchains.github.io/blockchainlab-api/v1/index.json
curl https://blockchains.github.io/blockchainlab-api/v1/chains.json | jq '.data[] | select(.chainId==8453)'</pre>
<p id="gen" class="mut"></p>
<table><thead><tr><th>Dataset</th><th>Rows</th><th>Description</th><th>Source</th></tr></thead><tbody id="rows"><tr><td colspan="4">Loading…</td></tr></tbody></table>
<h2>Related</h2>
<ul>
<li><a href="https://blockchains.github.io/blockchainlab-tools/">Blockchain Lab Tools</a> — gas, units, ABI, tx decoder, merkle, storage slots (uses this API)</li>
<li><a href="https://github.com/Blockchains/blockchainlab-sdk">blockchainlab-sdk</a> — typed TypeScript + Python clients for every dataset · <a href="https://github.com/Blockchains/blockchainlab-api/blob/main/CHANGELOG.md">changelog &amp; versioning</a></li>
<li><a href="https://blockchains.github.io/">Blockchain Lab on GitHub — hub &amp; search</a></li>
<li><a href="https://github.com/Blockchains/blockchainlab-mcp">blockchainlab-mcp</a> — MCP server + SDK so AI agents can query these datasets</li>
<li><a href="https://github.com/Blockchains/blockchainlab-feeds">blockchainlab-feeds</a> — upstream hackathon / event / X-intel feeds</li>
<li><a href="https://blockchainlab.com/whitepaper?utm_source=github&utm_medium=open-data-api&utm_campaign=blockchainlab-api">Whitepaper library</a> · <a href="https://blockchainlab.com/learn/glossary?utm_source=github&utm_medium=open-data-api&utm_campaign=blockchainlab-api">Glossary</a> · <a href="https://blockchainlab.com/learn/protocol-atlas?utm_source=github&utm_medium=open-data-api&utm_campaign=blockchainlab-api">Protocol atlas</a></li>
</ul></main>
<footer class="mut">Built by Blockchain Lab — <a href="https://blockchainlab.com/?utm_source=github&utm_medium=open-data-api&utm_campaign=blockchainlab-api">blockchainlab.com</a>. Data belongs to the named sources. Not investment advice.</footer>
<script>
fetch('v1/index.json').then(r=>r.json()).then(j=>{document.getElementById('gen').textContent='Last build: '+j.generated_at+(j.errors.length?' · errors: '+j.errors.map(e=>e.dataset).join(', '):'');
document.getElementById('rows').innerHTML=j.datasets.map(d=>`<tr><td><a href="v1/${d.dataset}.json"><code>${d.dataset}</code></a>${d.stale?' <span class=pill>stale</span>':''} <a href="v1/schemas/${d.dataset}.schema.json" title="JSON Schema">schema</a></td><td>${d.count??''}</td><td>${d.description}</td><td><a href="${d.source_url}">${d.source}</a></td></tr>`).join('')})
</script></body></html>