Watchdata API alternatives
12 other blockchain APIs compared on authentication, HTTPS, CORS and documented endpoints.
| API | Auth | HTTPS | CORS | Endpoints |
|---|---|---|---|---|
| Watchdata | API key | Yes | Unknown | — |
| Nownodes | API key | Yes | Unknown | — |
| Blockscout | API key | Yes | Yes | — |
| Etherscan | API key | Yes | Yes | — |
| Chainlink | No auth | Yes | Unknown | — |
| Helium | No auth | Yes | Unknown | — |
| Dwellir | API key | Yes | Yes | — |
| The Graph | API key | Yes | Unknown | — |
| Bitquery | API key | Yes | Yes | — |
| Covalent | API key | Yes | Unknown | — |
| Chainpoint | No auth | Yes | Unknown | — |
| Steem | No auth | No | No | — |
| ClearTrace | No auth | Yes | Yes | — |
Nownodes
BlockchainBlockchain-as-a-service solution that provides high-quality connection via API
Blockscout
BlockchainMultichain block explorer REST API (with Etherscan-compatible JSON-RPC)
Etherscan
BlockchainEthereum explorer API
Chainlink
BlockchainBuild hybrid smart contracts with Chainlink
Helium
BlockchainHelium is a global, distributed network of Hotspots that create public, long-range wireless coverage
Dwellir
BlockchainRPC endpoints for 150+ blockchain networks, including Ethereum, Solana, Polkadot and Hyperliquid
The Graph
BlockchainIndexing protocol for querying networks like Ethereum with GraphQL
Bitquery
BlockchainOnchain GraphQL APIs & DEX APIs
Covalent
BlockchainMulti-blockchain data aggregator platform
Chainpoint
BlockchainChainpoint is a global network for anchoring data to the Bitcoin blockchain
Steem
BlockchainBlockchain-based blogging and social media website
ClearTrace
BlockchainCross-frontend DEX attribution and execution quality data across Ethereum and L2s