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* Create the-graph * Delete static/img/get_started/tooling/data_indexers/the-graph * Update thegraph.mdx * Create README.md * Add files via upload * Update thegraph.mdx * Update docs/get-started/tooling/data-indexers/thegraph.mdx Co-authored-by: Joel Willmore <[email protected]> * Update docs/get-started/tooling/data-indexers/thegraph.mdx Co-authored-by: Joel Willmore <[email protected]> * Update docs/get-started/tooling/data-indexers/thegraph.mdx Co-authored-by: Joel Willmore <[email protected]> * Update docs/get-started/tooling/data-indexers/thegraph.mdx Co-authored-by: Joel Willmore <[email protected]> * Update docs/get-started/tooling/data-indexers/thegraph.mdx Co-authored-by: Joel Willmore <[email protected]> * Update docs/get-started/tooling/data-indexers/thegraph.mdx Co-authored-by: Joel Willmore <[email protected]> * Update docs/get-started/tooling/data-indexers/thegraph.mdx Co-authored-by: Joel Willmore <[email protected]> * Update docs/get-started/tooling/data-indexers/thegraph.mdx Co-authored-by: Joel Willmore <[email protected]> * Update docs/get-started/tooling/data-indexers/thegraph.mdx Co-authored-by: Joel Willmore <[email protected]> * Delete static/img/get_started/tooling/data_indexers/the-graph/README.md * Update docs/get-started/tooling/data-indexers/thegraph.mdx Co-authored-by: Joel Willmore <[email protected]> * Update docs/get-started/tooling/data-indexers/thegraph.mdx Co-authored-by: Joel Willmore <[email protected]> * Update docs/get-started/tooling/data-indexers/thegraph.mdx Co-authored-by: Joel Willmore <[email protected]> * Update docs/get-started/tooling/data-indexers/thegraph.mdx Co-authored-by: Joel Willmore <[email protected]> --------- Co-authored-by: Joel Willmore <[email protected]>
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--- | ||
title: TheGraph network | ||
title: The Graph Network | ||
image: /img/socialCards/thegraph-network.jpg | ||
--- | ||
|
||
As a dapp developer, retrieving onchain data for your dapp can be challenging | ||
because you will most likely: | ||
# The Graph | ||
|
||
1. Consume your RPC provider quota with calls. | ||
2. Need to implement error handling on multiple levels. | ||
3. Define creative strategies to avoid UX impacts when managing a high volume of | ||
data. | ||
Getting historical data on smart contracts can be frustrating when building a | ||
dapp. [The Graph](https://thegraph.com/) offers a powerful way to query smart | ||
contract data with open APIs known as subgraphs. Anyone can create or query | ||
subgraphs, making the data available to the entire ecosystem. The Graph is | ||
powered by hundreds of independent Indexers, enabling your dapp to become truly | ||
decentralized. | ||
|
||
The Graph is a decentralized data indexer provider that indexes the Linea | ||
blockchain for you and exposes onchain data through an HTTPS API. | ||
Developers can use 100,000 free queries per month by using The Graph Network. | ||
|
||
We run The Graph indexers on Linea to allow you to leverage the power of this | ||
technology. | ||
## Quickstart | ||
|
||
:::info[update] | ||
Subgraphs index emitted events by default, but additional functionality can be | ||
added later. A subgraph can be created in just a few minutes by following these | ||
steps: | ||
|
||
TheGraph is now live with Linea Mainnet! For more information, take a look at | ||
the official [documentation](https://thegraph.com/docs/en/) | ||
1. Initialize your subgraph | ||
2. Publish your subgraph to The Graph Network | ||
3. Query from your dapp with your unique API key | ||
|
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::: | ||
Here is a step-by-step walkthrough: | ||
|
||
## 1. Initialize your subgraph | ||
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### Create a subgraph in subgraph studio | ||
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Go to the [Subgraph Studio](https://thegraph.com/studio/) and connect your | ||
wallet. Once your wallet is connected, you can begin by clicking "Create a | ||
Subgraph". When choosing a name, it's recommended to use Title Case, including | ||
the subgraph and chain name, e.g., "MyDapp Subgraph Linea". | ||
|
||
<div class="center-container"> | ||
<div class="img-large"> | ||
<img | ||
src="/img/get_started/tooling/data_indexers/the-graph/create-a-subgraph.png" | ||
alt="alt text here" | ||
/> | ||
</div> | ||
</div> | ||
|
||
Then, you will land on your subgraph's page. All the CLI commands you need will | ||
be visible on the right side of the page: | ||
|
||
<div class="center-container"> | ||
<div class="img-large"> | ||
<img | ||
src="/img/get_started/tooling/data_indexers/the-graph/cli-commands.png" | ||
alt="alt text here" | ||
/> | ||
</div> | ||
</div> | ||
|
||
### Install the Graph CLI | ||
|
||
On your local machine, run the following: | ||
|
||
``` | ||
npm install -g @graphprotocol/graph-cli | ||
``` | ||
|
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### Initialize your subgraph | ||
|
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You can copy this directly from your subgraph page to include your specific | ||
subgraph slug: | ||
|
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``` | ||
graph init <SUBGRAPH_SLUG> | ||
``` | ||
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You'll be prompted to provide some info on your subgraph like this: | ||
|
||
<div class="center-container"> | ||
<div class="img-large"> | ||
<img | ||
src="/img/get_started/tooling/data_indexers/the-graph/cli-example.png" | ||
alt="alt text here" | ||
/> | ||
</div> | ||
</div> | ||
|
||
Simply verify your contract on the block explorer, and the CLI will | ||
automatically obtain the ABI and set up your subgraph. The default settings will | ||
generate an entity for each event. | ||
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## 2. Deploy and publish | ||
|
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### Deploy to Subgraph Studio | ||
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First, run these commands: | ||
|
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```bash | ||
$ graph codegen | ||
$ graph build | ||
``` | ||
|
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Then, run these to authenticate and deploy your subgraph. You can copy these | ||
commands directly from your subgraph's page in Studio to include your specific | ||
deploy key and subgraph slug: | ||
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```bash | ||
$ graph auth <DEPLOY_KEY> | ||
$ graph deploy <SUBGRAPH_SLUG> | ||
``` | ||
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You will be asked for a version label. You can enter something like v0.0.1, but | ||
you're free to choose the format. | ||
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### Test your subgraph | ||
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You can test your subgraph by making a sample query in the playground section. | ||
The Details tab will show you an API endpoint. You can use that endpoint to test | ||
from your dapp. | ||
|
||
<div class="center-container"> | ||
<div class="img-large"> | ||
<img | ||
src="/img/get_started/tooling/data_indexers/the-graph/playground.png" | ||
alt="alt text here" | ||
/> | ||
</div> | ||
</div> | ||
|
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### Publish your subgraph to The Graph's decentralized network | ||
|
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Once your subgraph is ready to be put into production, you can publish it to the | ||
decentralized network. On your subgraph's page in Subgraph Studio, click on the | ||
Publish button: | ||
|
||
<div class="center-container"> | ||
<div class="img-large"> | ||
<img | ||
src="/img/get_started/tooling/data_indexers/the-graph/publish-button.png" | ||
alt="alt text here" | ||
/> | ||
</div> | ||
</div> | ||
|
||
Before you can query your subgraph, Indexers need to begin serving queries on | ||
it. In order to streamline this process, you can curate your own subgraph using | ||
GRT. | ||
|
||
When publishing, you'll see the option to curate your subgraph. As of May 2024, | ||
it is recommended that you curate your own subgraph with at least 3,000 GRT to | ||
ensure that it is indexed and available for querying as soon as possible. | ||
|
||
<div class="center-container"> | ||
<div class="img-large"> | ||
<img | ||
src="/img/get_started/tooling/data_indexers/the-graph/publish-screen.png" | ||
alt="alt text here" | ||
/> | ||
</div> | ||
</div> | ||
|
||
> **Note:** The Graph's smart contracts are all on Arbitrum One, even though | ||
> your subgraph is indexing data from Ethereum, BSC or any other | ||
> [supported chain](https://thegraph.com/docs/en/developing/supported-networks/). | ||
## 3. Query your subgraph | ||
|
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Congratulations! You can now query your subgraph on the decentralized network! | ||
|
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To query any subgraph on the decentralized network, pass a GraphQL query into | ||
the subgraph's query URL, which can be found at the top of its Explorer page. | ||
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Here's an example from the | ||
[CryptoPunks Ethereum subgraph](https://thegraph.com/explorer/subgraphs/HdVdERFUe8h61vm2fDyycHgxjsde5PbB832NHgJfZNqK) | ||
by Messari: | ||
|
||
<div class="center-container"> | ||
<div class="img-large"> | ||
<img | ||
src="/img/get_started/tooling/data_indexers/the-graph/query-url.png" | ||
alt="alt text here" | ||
/> | ||
</div> | ||
</div> | ||
|
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The query URL for this subgraph is: | ||
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`https://gateway-arbitrum.network.thegraph.com/api/`**[api-key]**`/subgraphs/id/HdVdERFUe8h61vm2fDyycgxjsde5PbB832NHgJfZNqK` | ||
|
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Now, you simply need to fill in your own API Key to start sending GraphQL | ||
queries to this endpoint. | ||
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### Get your own API key | ||
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In Subgraph Studio, you'll see the "API Keys" menu at the top of the page. Here, | ||
you can create API Keys. | ||
|
||
<div class="center-container"> | ||
<div class="img-large"> | ||
<img | ||
src="/img/get_started/tooling/data_indexers/the-graph/api-keys.png" | ||
alt="alt text here" | ||
/> | ||
</div> | ||
</div> | ||
|
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## Appendix | ||
|
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### Sample query | ||
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This query shows the most expensive CryptoPunks sold. | ||
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```graphql | ||
{ | ||
trades(orderBy: priceETH, orderDirection: desc) { | ||
priceETH | ||
tokenId | ||
} | ||
} | ||
``` | ||
|
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Passing this into the query URL returns this result: | ||
|
||
``` | ||
{ | ||
"data": { | ||
"trades": [ | ||
{ | ||
"priceETH": "124457.067524886018255505", | ||
"tokenId": "9998" | ||
}, | ||
{ | ||
"priceETH": "8000", | ||
"tokenId": "5822" | ||
}, | ||
// ... | ||
``` | ||
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### Sample code | ||
|
||
```jsx | ||
const axios = require("axios"); | ||
|
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const graphqlQuery = `{ | ||
trades(orderBy: priceETH, orderDirection: desc) { | ||
priceETH | ||
tokenId | ||
} | ||
}`; | ||
const queryUrl = | ||
"https://gateway-arbitrum.network.thegraph.com/api/[api-key]/subgraphs/id/HdVdERFUe8h61vm2fDyycHgxjsde5PbB832NHgJfZNqK"; | ||
|
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const graphQLRequest = { | ||
method: "post", | ||
url: queryUrl, | ||
data: { | ||
query: graphqlQuery, | ||
}, | ||
}; | ||
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// Send the GraphQL query | ||
axios(graphQLRequest) | ||
.then((response) => { | ||
// Handle the response here | ||
const data = response.data.data; | ||
console.log(data); | ||
}) | ||
.catch((error) => { | ||
// Handle any errors | ||
console.error(error); | ||
}); | ||
``` | ||
|
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### Additional resources | ||
|
||
- To explore all the ways you can optimize and customize your subgraph for better | ||
performance, read more about | ||
[creating a subgraph here](https://thegraph.com/docs/en/developing/creating-a-subgraph/). | ||
- To learn more about | ||
[querying data from your subgraph](https://thegraph.com/docs/en/querying/querying-the-graph/). | ||
- [Subgraph Studio](https://thegraph.com/studio/). |
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