json-to-toml
Convert a JSON file to TOML format. JSON arrays are wrapped under an items key and scalar values under a value key, since TOML requires a top-level table.
Endpoint
POST /v1/convert/json-to-toml
Content-Type: multipart/form-data
Accepted input: .json files (UTF-8 encoded)
Output format: .toml (application/toml)
Authentication
Requires either a private API key or a JWT token from a public key.
X-API-Key: sk_live_your_private_key
Or:
Authorization: Bearer <jwt_token>
Request Parameters
| Parameter | Type | Required | Default | Description |
|---|---|---|---|---|
file |
file | Yes | -- | The .json file to convert. Must be UTF-8 encoded. Must not contain null values. |
output_filename |
string |
No | Input filename | Custom output filename. The .toml extension is added automatically. |
direct_download |
boolean |
No | true |
When true, returns raw TOML bytes. When false, returns metadata with a presigned download URL. |
Conversion Rules
-
JSON object passes through directly:
json {"database": {"host": "localhost", "port": 5432}}Becomes:toml [database] host = "localhost" port = 5432 -
JSON array is wrapped under an
itemskey (TOML requires a top-level table):json [1, 2, 3]Becomes:toml items = [1, 2, 3] -
Scalar value is wrapped under a
valuekey:json 42Becomes:toml value = 42
Important: TOML does not support
null values. If your JSON contains any null values, the conversion will fail with a 400 error. Remove or replace null values before converting.
Response
Direct Download (direct_download=true, default)
HTTP 200 OK
Content-Type: application/toml
Content-Disposition: inline; filename="config_20260405_123456789.toml"
Metadata Response (direct_download=false)
{
"presigned_url": "https://spaces.example.com/...",
"object_key": "env/files/{project_id}/json-to-toml/config_20260405_123456789.toml",
"filename": "config_20260405_123456789.toml",
"file_size": 1234,
"conversion_time_seconds": 0.03
}
Code Examples
Python
import requests
with open("config.json", "rb") as f:
response = requests.post(
"https://api.enconvert.com/v1/convert/json-to-toml",
headers={"X-API-Key": "sk_live_your_private_key"},
files={"file": ("config.json", f, "application/json")}
)
with open("config.toml", "wb") as out:
out.write(response.content)
Node.js
const form = new FormData();
form.append("file", fs.createReadStream("config.json"));
const response = await fetch("https://api.enconvert.com/v1/convert/json-to-toml", {
method: "POST",
headers: { "X-API-Key": "sk_live_your_private_key" },
body: form
});
const toml = await response.text();
PHP
$ch = curl_init("https://api.enconvert.com/v1/convert/json-to-toml");
curl_setopt_array($ch, [
CURLOPT_POST => true,
CURLOPT_RETURNTRANSFER => true,
CURLOPT_HTTPHEADER => ["X-API-Key: sk_live_your_private_key"],
CURLOPT_POSTFIELDS => ["file" => new CURLFile("config.json", "application/json")]
]);
$toml = curl_exec($ch);
curl_close($ch);
Go
body := &bytes.Buffer{}
writer := multipart.NewWriter(body)
part, _ := writer.CreateFormFile("file", "config.json")
file, _ := os.Open("config.json")
io.Copy(part, file)
writer.Close()
req, _ := http.NewRequest("POST", "https://api.enconvert.com/v1/convert/json-to-toml", body)
req.Header.Set("Content-Type", writer.FormDataContentType())
req.Header.Set("X-API-Key", "sk_live_your_private_key")
resp, _ := http.DefaultClient.Do(req)
Error Responses
| Status | Condition |
|---|---|
400 Bad Request |
File is not a .json file |
400 Bad Request |
Invalid JSON content |
400 Bad Request |
JSON to TOML conversion failed (typically due to null values) |
401 Unauthorized |
Missing or invalid API key / JWT token |
402 Payment Required |
Monthly conversion limit reached |
413 Payload Too Large |
File exceeds plan's maximum file size |
Limits
| Limit | Value |
|---|---|
| Max file size | Plan-dependent (Free: 5 MB) |
| Input encoding | UTF-8 only |
| Null values | Not supported (TOML limitation) |
| Monthly conversions | Plan-dependent |