## By its FID and target FID

### cURL

```
curl --request GET \
  --url 'https://snapchain-api.neynar.com/v1/linkById?link_type=follow' \
  --header 'x-api-key: NEYNAR_API_DOCS'
```

```
import requests

url = "https://snapchain-api.neynar.com/v1/linkById?link_type=follow"

headers = {"x-api-key": "NEYNAR_API_DOCS"}

response = requests.get(url, headers=headers)

print(response.text)
```

```
const options = {method: 'GET', headers: {'x-api-key': 'NEYNAR_API_DOCS'}};

fetch('https://snapchain-api.neynar.com/v1/linkById?link_type=follow', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));
```

```
<?php

$curl = curl_init();

curl_setopt_array($curl, [\
  CURLOPT_URL => "https://snapchain-api.neynar.com/v1/linkById?link_type=follow",\
  CURLOPT_RETURNTRANSFER => true,\
  CURLOPT_ENCODING => "",\
  CURLOPT_MAXREDIRS => 10,\
  CURLOPT_TIMEOUT => 30,\
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,\
  CURLOPT_CUSTOMREQUEST => "GET",\
  CURLOPT_HTTPHEADER => [\
    "x-api-key: NEYNAR_API_DOCS"\
  ],\
]);

$response = curl_exec($curl);
$err = curl_error($curl);

curl_close($curl);

if ($err) {
  echo "cURL Error #:" . $err;
} else {
  echo $response;
}
```

```
package main

import (
	"fmt"
	"net/http"
	"io"
)

func main() {

url := "https://snapchain-api.neynar.com/v1/linkById?link_type=follow"

req, _ := http.NewRequest("GET", url, nil)

req.Header.Add("x-api-key", "NEYNAR_API_DOCS")

res, _ := http.DefaultClient.Do(req)

defer res.Body.Close()
	body, _ := io.ReadAll(res.Body)

fmt.Println(string(body))
}
```

```
HttpResponse<String> response = Unirest.get("https://snapchain-api.neynar.com/v1/linkById?link_type=follow")
  .header("x-api-key", "NEYNAR_API_DOCS")
  .asString();
```

```
require 'uri'
require 'net/http'

url = URI("https://snapchain-api.neynar.com/v1/linkById?link_type=follow")

http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true

request = Net::HTTP::Get.new(url)
request["x-api-key"] = 'NEYNAR_API_DOCS'

response = http.request(request)
puts response.read_body
```

### Response

From the server:
```json
{
  "hash": "0xd2b1ddc6c88e865a33cb1a565e0058d757042974",
  "hashScheme": "HASH_SCHEME_BLAKE3",
  "signature": "aSDinaTvuI8gbWludGxpZnk=",
  "signatureScheme": "SIGNATURE_SCHEME_ED25519",
  "signer": "<string>",
  "data": {
    "type": "MESSAGE_TYPE_CAST_ADD",
    "fid": 2,
    "timestamp": 48994466,
    "network": "FARCASTER_NETWORK_MAINNET",
    "linkBody": {
      "type": "follow",
      "targetFid": 1,
      "displayTimestamp": 48994466
    }
  }
}
```

```json
{
  "errCode": "<string>",
  "presentable": true,
  "name": "<string>",
  "code": 123,
  "details": "<string>",
  "metadata": {
    "errcode": [
      "<string>"
    ]
  }
}
```

### Authorizations

- **x-api-key**
  - Type: string
  - Location: header
  - Default: NEYNAR_API_DOCS
  - Required: true

### Query Parameters

- **fid**: Required, integer<uint64>. The FID of the link's originator (e.g. `1`). Must be `x >= 1`.
- **target_fid**: Required, integer<uint64>. The FID of the target user for this link (e.g. `1`). Must be `x >= 1`.
- **link_type**: Required, enum<string>, default: follow. Defines the type of social connection.

### Response

- Status code: 200
- Content-Type: application/json
- The requested Link:

#### Response Fields
- **hash**: string required.
- **hashScheme**: enum<string> required, default: HASH_SCHEME_BLAKE3.
- **signature**: string<byte> required.
- **signatureScheme**: enum<string> required, default: SIGNATURE_SCHEME_ED25519.

#### Data
- **data**: object required.