CSV to JSON

Convert between CSV and JSON formats in both directions. Upload a CSV or TSV file to get a JSON array of objects, or upload JSON (an array of objects, or an object wrapping one) to get a CSV file.

API Endpoint

POST /api/v1/tools/files/csv-json

Accepts multipart form data with a CSV, TSV, or JSON file and a JSON settings field.

Parameters

Parameter	Type	Required	Default	Description
pretty	boolean	No	true	Pretty-print JSON output with indentation

Example Request

CSV to JSON:

curl -X POST http://localhost:1349/api/v1/tools/files/csv-json \
  -H "Authorization: Bearer si_your-api-key" \
  -F "file=@users.csv" \
  -F 'settings={"pretty": true}'

JSON to CSV:

curl -X POST http://localhost:1349/api/v1/tools/files/csv-json \
  -H "Authorization: Bearer si_your-api-key" \
  -F "file=@users.json" \
  -F 'settings={}'

Example Response

{
  "jobId": "a1b2c3d4-e5f6-7890-abcd-ef1234567890",
  "downloadUrl": "/api/v1/download/a1b2c3d4-e5f6-7890-abcd-ef1234567890/users.json",
  "originalSize": 1500,
  "processedSize": 2200
}

Notes

• Conversion direction is auto-detected from the input file extension: .csv or .tsv produces .json, and .json produces .csv.
• The pretty parameter only affects JSON output. When set to false, the output is a compact single-line JSON string.
• JSON input can be an array of objects, an object with a single key holding such an array (like {"data": [...]}), or a flat object of scalar values. Each object becomes a row, and each key becomes a column header. A flat object comes out as a two-column key,value table. Objects with several top-level keys, and empty arrays, are rejected.
• TSV (tab-separated values) files are supported alongside CSV.