freeapis

Bitquery

Onchain GraphQL APIs & DEX APIs

中文 ↺DE ↺
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Authentication
API Key
HTTPS
Yes
CORS
Yes
Category
Blockchain
Data source
public-apis + marcelscruz
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-KEY header (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.

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