API archive entry · source-reported
Watchdata
Provide simple and reliable API access to Ethereum blockchain
Other Blockchain APIs
These records share a directory category and are ordered by similarity of reported access facts. They are a shortlist, not proof of drop-in compatibility.
Covalent
Multi-blockchain data aggregator platform
API key · HTTPS reported · CORS Unknown
Covalent
Multi-blockchain data aggregator platform
API key · HTTPS reported · CORS Unknown
Nownodes
Blockchain-as-a-service solution that provides high-quality connection via API
API key · HTTPS reported · CORS Unknown
The Graph
Indexing protocol for querying networks like Ethereum with GraphQL
API key · HTTPS reported · CORS Unknown
Dwellir
RPC endpoints for 150+ blockchain networks, including Ethereum, Solana, Polkadot and Hyperliquid
API key · HTTPS reported · CORS Yes
SwiftNodes
Multi-chain blockchain RPC nodes (Ethereum, Solana and 75+ networks)
API key · HTTPS reported · CORS Yes
How to compare them
Coverage
Compare exact endpoints, fields, geography, history, and update frequency.
Operating cost
Model request volume, caching, overages, support, and migration cost.
Integration risk
Test auth, errors, pagination, latency, versioning, and outage behavior.
Data rights
Review attribution, redistribution, retention, privacy, and commercial-use terms.
Source reference
This page separates source-reported facts from questions that need live provider verification.