| Bitquery | Onchain GraphQL APIs & DEX APIs for blockchain data analysis | apiKey | ✓ | ✓ | |
| Chainlink | Build hybrid smart contracts with decentralized oracle networks | No | ✓ | ? | |
| Chainpoint | Global network for anchoring data to the Bitcoin blockchain | No | ✓ | ? | |
| Covalent | Unified API for multi-blockchain data aggregation and analytics | apiKey | ✓ | ? | |
| Etherscan | Ethereum blockchain explorer API for transactions and smart contracts | apiKey | ✓ | ✓ | |
| Helium | Access data from the global decentralized wireless network Helium | No | ✓ | ? | |
| Nownodes | Blockchain-as-a-service API providing access to full nodes and block explorers | apiKey | ✓ | ? | |
| Steem | Blockchain-based social media and blogging platform | No | ✗ | ✗ | |
| The Graph | Decentralized indexing protocol for querying blockchain data via GraphQL | apiKey | ✓ | ? | |
| Walltime | Retrieve market information and trading data from Walltime | No | ✓ | ? | |
| Watchdata | Reliable API access to Ethereum and other blockchain networks | apiKey | ✓ | ? | |