# JSON Array to CSV Converter

> JSON Array to CSV Converter is a paid API for AI agents from api.24klabs.ai, paid per call via x402, $0.002/call, status unknown (last checked 2026-09-13).

Flattens a JSON array of objects into a CSV string with a header row.

## Facts

- Endpoint: POST https://api.24klabs.ai/api/v1/json-to-csv
- Price: $0.002/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-13
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/json-array-to-csv-converter-168a1ad2
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_gfblGL9yqksiPcQ3_Cuw0

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability json-array-to-csv-converter-168a1ad2 -d '<json body>'
```

Example prompt: Take this JSON array of objects and convert it into a CSV with a header row: [{"name":"Alice","age":30,"city":"NYC"},{"name":"Bob","age":25,"city":"LA"}].

## When to prefer this

Choose this endpoint when you have a flat or nearly-flat JSON array of objects and need a quick, low-cost conversion to CSV with a proper header row — especially in agent pipelines where data from an API or database needs to be handed off to a spreadsheet tool, reporting system, or file download. Prefer it over manual serialization when you want consistent header ordering and don't want to implement CSV escaping logic yourself.

## Known failure modes

- Input is not a valid JSON array — returns a 400 or error message
- Input is a JSON object rather than an array — may be rejected or mishandled
- Array contains heterogeneous objects with inconsistent keys — missing fields may appear as empty columns or cause errors
- Input array is empty — may return only a header row or an empty response
- Deeply nested objects — nested values are likely stringified or omitted rather than recursively flattened

## How this service works

Flatten a JSON array of objects into CSV with a header row.

## Output

A CSV-formatted string where the first row is a header derived from the keys of the JSON objects, and each subsequent row corresponds to one object in the input array, with values in the same column order as the header.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "rows": {
   "type": "array"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "csv": "name,age\nAlice,30\nBob,25\n"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/json-array-to-csv-converter-168a1ad2/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.24klabs.ai](https://www.zero.xyz/host/api.24klabs.ai/llms.txt)