Bitquery
Onchain GraphQL APIs & DEX APIs
- Authentication
- API Key
- HTTPS
- Yes
- CORS
- Yes
- Category
- Blockchain
- Documentation / URL
- https://graphql.bitquery.io/ide
Overview
Bitquery provides on-chain GraphQL APIs — key-based (unauthenticated requests get 401, verified).
Quick Start
Query (replace YOUR_KEY):
curl -X POST "https://graphql.bitquery.io/" \
-H "X-API-KEY: YOUR_KEY" \
-H "Content-Type: application/json" \
-d '{"query":"{ ethereum { transactions(limit: 1) { hash } } }"}'Authentication
- Register at bitquery.io → API key.
- Send it as the
X-API-KEYheader (missing → 401, verified).
Rate Limits & Notes
- Free tier with limits (check the docs); paid plans scale.
- On-chain data, DEX APIs.
FAQ
Is Bitquery free? Free tier with limits; more is paid.
Why 401? An API key is required (verified).
What’s the auth style?
X-API-KEY header + GraphQL.
More in Blockchain
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|---|---|---|---|---|
| Blockscout Multichain block explorer REST API (with Etherscan-compatible JSON-RPC) | API Key | Yes | No | ↗ |
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