3
votes
What are the GraphQL API providers for blockchain data?
There are only a few customizable indexing solutions / frameworks (that include an instant Graphql API) that I've come across to query data for dApps or dashboards.
There are also providers that re-...
- 41
2
votes
Accepted
How to Use Subgraph Enums in the Mapping?
You cannot import enums into mappings from the generated schema. Instead, you are expected to use the string representation of the enum value to set an enum field of an entity, just as mentioned in ...
- 4,639
2
votes
What are the GraphQL API providers for blockchain data?
When seeking GraphQL API providers for blockchain data, a prominent solution to consider is The Graph, as well as a production-grade hosted service Chainstack Subgraphs.
The Graph
The Graph is a ...
- 317
1
vote
Accepted
implementing chart like Dextool's chart for my react.js application
Using GraphQL to retrieve trading histories is a good approach, as it allows you to retrieve only the data you need, which can improve performance.
As for the OHLC react chart package, it's a popular ...
- 185
1
vote
How to build an API that returns the metadata of an NFT directly by querying the Ethereum blockchain?
Came across this hackathon project at Eth Global called the "Lindexer" powered by Envio, which pretty much answer the question.
tl;dr NFT metadata is stored off-chain, e.g. decentralized ...
- 41
1
vote
How can I query the onchain data on the ethereum blockchain without using any APIs?
If you need live onchain data, you have 3 options.
Using an API or providers like Alchemy etc.
If the users connects his wallet you can use the users provider in his wallet (metamask for ex.)
You can ...
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