BlockSpan
BlockSpan is an NFT API platform for software companies developing on the blockchain. We aggregate data from multiple chains and provide an API layer to allow NFT developers to retrieve token prices, current ownership, and metadata including cached images in real time. Supporting multiple blockchains, or switching chains, doesn't have to be difficult. You can stop scraping block logs and write a simple rest API integration instead. More than just transaction data, our API returns price, current owner, metadata, and more. Ethereum, Polygon, Arbitrum, and Optimism supported today, with more coming soon. We've written extensive documentation for each endpoint that includes an interactive API console. Our NFT API includes token metadata and cached image urls, saving making API and IPFS calls to fetch that data.
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StarTree
StarTree, powered by Apache Pinot™, is a fully managed real-time analytics platform built for customer-facing applications that demand instant insights on the freshest data. Unlike traditional data warehouses or OLTP databases—optimized for back-office reporting or transactions—StarTree is engineered for real-time OLAP at true scale, meaning:
- Data Volume: query performance sustained at petabyte scale
- Ingest Rates: millions of events per second, continuously indexed for freshness
- Concurrency: thousands to millions of simultaneous users served with sub-second latency
With StarTree, businesses deliver always-fresh insights at interactive speed, enabling applications that personalize, monitor, and act in real time.
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Nomics
We’re an API-first cryptoasset data company delivering professional-grade market data APIs to institutional crypto investors & exchanges. We offer products & services that allow funds, fintech apps, & exchanges to access clean, normalized & gapless primary source trade & order book data. To grow the decentralized financial system by making it accessible and understandable to data-driven investors. Index 95% of trade, order book, and on-chain transaction data available for tokenized assets (including security tokens; tokenized funds, indexes, derivatives, and REITs; and of course cryptocurrencies). We are concise, articulate, and always clear about what we are trying to do. We listen well and seek to understand before reacting, maintaining calm poise in stressful situations to draw out the clearest thinking. We provide candid feedback to colleagues, sharing information openly and proactively.
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Codex.io
Codex is an API for enriched blockchain and prediction market data. For tokens, it covers real-time pricing, charts, holders, balances, and aggregated analytics for 80M+ tokens and 700M+ wallets across 80+ networks (EVM chains and Solana), with sub-second freshness, historical USD pricing, and WebSocket and webhook subscriptions.
Codex also provides prediction market data across Polymarket and Kalshi through a single schema. This includes events, markets, traders, holdings, live order books, and trade feeds, along with time-windowed stats and ranking signals (volume, liquidity, open interest, trade count, and unique traders) at 5m through 1w windows that the venue APIs do not expose natively.
Codex is a GraphQL API that most teams query directly, with an optional TypeScript SDK. There is also an MCP server for reading the documentation. Codex offers a free tier (10,000 requests/month), usage-based Growth pricing, and Enterprise plans. Developers use it to build trading platforms.
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