# Connect to GraphQL API

### HTTPS

{% tabs %}
{% tab title="Curl" %}

```bash
curl --location --request POST https://shellnet.ackinacki.org/graphql \
--header 'Content-Type: application/json' \
--data-raw '{"query":"query{\n  blockchain{\n    blocks(last:1){\n      edges{\n        node{\n          hash\n          seq_no\n        }\n      }\n    }\n  }\n}","variables":{}}'
```

{% endtab %}

{% tab title="tvm-sdk-js" %}

```javascript
const {TvmClient} = require("@tvmsdk/core");
const {libNode} = require("@tvmsdk/lib-node");

TvmClient.useBinaryLibrary(libNode)

const client = new TvmClient({
    network: {
        endpoints: [
            "endpoint"
        ],
    },
});

(async () => {
    try {
        queryString = `
            query{
                blockchain{
                blocks(last:1){
                    edges{
                    node{
                        hash
                        seq_no
                    }
                    }
                }
                }
            }
        `
        let {seq_no, hash} = (await client.net.query({ 
            "query": queryString }))
        .result.data.blockchain.blocks.edges[0].node;
        console.log("The last masterchain block seqNo is " + seq_no+ '\n' + "the hash is" + hash);
        client.close();
}
    catch (error) {
            console.error(error);
    }
}
)()
```

{% endtab %}

{% tab title="JS fetch" %}

```javascript
var myHeaders = new Headers();
myHeaders.append("Content-Type", "application/json");

var graphql = JSON.stringify({
  query: "query{\n  blockchain{\n    blocks(last:1){\n      edges{\n        node{\n          hash\n          seq_no\n        }\n      }\n    }\n  }\n}",
  variables: {}
})
var requestOptions = {
  method: 'POST',
  headers: myHeaders,
  body: graphql,
  redirect: 'follow'
};

fetch("endpoint", requestOptions)
  .then(response => response.text())
  .then(result => console.log(result))
  .catch(error => console.log('error', error));
```

{% endtab %}

{% tab title="Postman" %}

```
URL: endpoint
Body: GraphQL
Query:

query{
  blockchain{
    blocks(last:1){
      edges{
        node{
          hash
          seq_no
        }
      }
    }
  }
}
```

{% endtab %}
{% endtabs %}

In the next section find out how to work with GraphQL Web playground and easily explore blockchain data with it.


---

# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://dev.ackinacki.com/graphql/graphql-api-examples/connect-to-graphql-api.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.