Convert JSON Arrays to CSV via API

# Convert JSON array to CSV
curl -X POST \
  https://api.convertfilefast.com/v2/convert/json-to-csv \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d "{"data": [{"name": "Alice", "age": 30}, {"name": "Bob", "age": 25}], "delimiter": ","}" \
  -o output.csv

# HTTP 200 OK — Content-Type: text/csv

import requests

payload = {
    "data": [
        {"name": "Alice", "age": 30, "city": "New York"},
        {"name": "Bob", "age": 25, "city": "London"}
    ],
    "delimiter": ","
}

response = requests.post(
    "https://api.convertfilefast.com/v2/convert/json-to-csv",
    headers={"Authorization": "Bearer YOUR_API_KEY"},
    json=payload
)

with open("output.csv", "wb") as f:
    f.write(response.content)

const payload = {
  data: [
    { name: "Alice", age: 30, city: "New York" },
    { name: "Bob", age: 25, city: "London" }
  ],
  delimiter: ","
};

const response = await fetch(
  "https://api.convertfilefast.com/v2/convert/json-to-csv",
  {
    method: "POST",
    headers: {
      "Authorization": "Bearer YOUR_API_KEY",
      "Content-Type": "application/json"
    },
    body: JSON.stringify(payload),
  }
);

fs.writeFileSync("output.csv", Buffer.from(await response.arrayBuffer()));

// n8n HTTP Request Node
{
  "method": "POST",
  "url": "https://api.convertfilefast.com/v2/convert/json-to-csv",
  "contentType": "application/json",
  "body": {
    "data": [
      { "name": "Alice", "age": 30 },
      { "name": "Bob", "age": 25 }
    ],
    "delimiter": ","
  },
  "options": { "response": { "responseFormat": "file" } }
}