# GraphQL

Canonical: https://gaboesquivel.com/tech/graphql

**Technology:** GraphQL

GraphQL APIs and subscriptions for blockchain indexing, exchange data, onchain ratings, and application backends.

## Project evidence

- [ChainGraph](https://gaboesquivel.com/project/chaingraph) (2020)
- [Bitcash](https://gaboesquivel.com/project/bitcashbank) (2020)
- [EOS Rate](https://gaboesquivel.com/project/eos-rate) (2018)
- [Knowledge.io](https://gaboesquivel.com/project/knowledge-io) (2017)

## Implementation

- Built ChainGraph's real-time GraphQL subscription toolkit for EOSIO and Antelope blockchain data.
- Exposed Bitcash's indexed EOS trading data through GraphQL APIs over Hasura and PostgreSQL.
- Developed EOS Rate's GraphQL API for reading onchain block-producer ratings and comparison UI.
- Integrated Knowledge.io marketplace and wallet services with GraphQL in the serverless AWS stack.