## Documentation Index

Fetch the complete documentation index at: [/llms.txt](https://docs.relay.link/llms.txt)

Use this file to discover all available pages before exploring further.

### cURL

```
curl --request POST \
  --url https://api.relay.link/transactions/single \
  --header 'Content-Type: application/json' \
  --data '
{
  "requestId": "<string>",
  "chainId": "<string>",
  "tx": "<string>"
}
'
```

```
const options = {
  method: 'POST',
  headers: {'Content-Type': 'application/json'},
  body: JSON.stringify({requestId: '<string>', chainId: '<string>', tx: '<string>'})
};

fetch('https://api.relay.link/transactions/single', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));
```

```
import requests

url = "https://api.relay.link/transactions/single"

payload = {
    "requestId": "<string>",
    "chainId": "<string>",
    "tx": "<string>"
}
headers = {"Content-Type": "application/json"}

response = requests.post(url, json=payload, headers=headers)

print(response.text)
```

### Response

200

```
{
  "message": "<string>"
}
```

### Headers

#### x-api-key

string

Optional API key for authentication and higher rate limits.

### Body

application/json

#### requestId

string

required

#### chainId

string

required

#### tx

string

required

### Response

200 - application/json

#### Default Response

message

string