Covalent
Covalent provides a unified API for scalable historical blockchain data across 200+ chains, supporting over 60,000 developers and processing over 100 billion transactions.
Services
Covalent provides a single, unified API designed for fast and scalable access to historical blockchain data across more than 200 chains. The company offers a range of features within its API, including endpoints for token balances, historical token balances, NFT data, and transaction data. Covalent's API supports critical functionalities like decoding and classifying complex blockchain events, making transaction data human-readable. They also provide enterprise support and service level agreements (SLAs) to help scale applications.
Products
Covalent offers several products, including the GoldRush Kit, which contains elegantly designed React components for dApp frontends, compatible with over 200 chains. The company also maintains the largest Web3 data lake for AI pipelines, ensuring access to structured and verifiable data. Additionally, the Testnet Faucet delivers testnet tokens across multiple blockchains, while their Grants Program provides up to $25,000 USD for projects utilizing on-chain data.
Blockchain Network Support
Covalent's API supports various blockchain networks, such as Ethereum, Binance Smart Chain, Polygon, and Avalanche. The API can fetch most blockchain transaction details, provide real-time gas estimates, and resolve addresses for ENS, RNS, and Unstoppable Domains. Covalent's API also supports historical Bitcoin balances and transactions, and has processed over 100 billion transactions to date, servicing over 60,000 developers.
Data Features
The Covalent API includes numerous data retrieval features. It can fetch all transactions in a block, including decoded log events, and event logs emitted from specific contract addresses. It provides key market data for NFTs, such as floor prices, volume, and sales counts. Additional features include fetching all token holders for ERC20 and ERC721 tokens, historical balances, and a variety of DEX data like liquidity pools and trading volumes.
Grants Program
Covalent's Grants Program aims to incentivize projects building with on-chain data by offering up to $25,000 USD in grants. This program is part of Covalent's effort to foster innovation and support the developer community engaged in creating new applications and tools in the blockchain ecosystem. The grants facilitate the growth and adoption of decentralized technologies by providing crucial financial support to promising projects.