Blockchain · head-to-head
Covalent vs Watchdata
Covalent's blockchain-data platform rebranded to GoldRush, unifying wallet balances, transaction history, NFT ownership, and token/DEX pricing across 100+ EVM and non-EVM chains behind one API, plus JSON-RPC endpoints for 30+ EVM networks. New accounts get a 14-day trial (25,000 credits) before moving to a paid plan or per-request (x402) billing with no monthly minimum. All data comes back as JSON.
WatchData operates hosted JSON-RPC nodes across Ethereum, Polygon, BNB Smart Chain, and other networks, plus higher-level "Powered API" endpoints for token balances, transfer history, and block-timestamp lookups that would otherwise require custom indexing. Every call needs an api_key issued from the dashboard after a free signup, with a 100-million-unit free monthly allowance before paid plans apply. Responses are plain JSON-RPC.
| Covalent | Watchdata | |
|---|---|---|
| Authentication | API Key | API Key |
| Pricing | freemium | freemium |
| Formats | JSON | JSON |
| CORS | yes | yes |
| HTTPS | Yes | Yes |