# NDJSON to JSON Array Converter

> NDJSON to JSON Array Converter is a paid API for AI agents from toolshed.lemon-agent.dev, paid per call via x402, $0.002/call, status unknown (last checked 2026-09-13).

Converts newline-delimited JSON (NDJSON) into a pretty-printed JSON array, skipping blank lines and rejecting malformed lines with a 1-based error indicator.

## Facts

- Endpoint: POST https://toolshed.lemon-agent.dev/convert/ndjson-json
- 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/ndjson-to-json-array-converter-d7c26202
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_K1jCEfPVWZ-1t1ddQ25DZ

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 ndjson-to-json-array-converter-d7c26202 -d '<json body>'
```

Example prompt: I have a log file in NDJSON format — each JSON object is on its own line — can you convert it into a regular pretty-printed JSON array for me?

## When to prefer this

Use this endpoint when you need to reliably convert NDJSON (newline-delimited JSON) to a standard JSON array, especially for log files where you need strict per-line validation and clear error reporting on malformed lines. Prefer this over manual bracket-wrapping because it correctly handles blank lines, validates each record, and pinpoints exactly which line is broken.

## Known failure modes

- Malformed JSON on any line causes full rejection with error indicating the 1-based line number
- Input exceeds 256 KB limit results in rejection
- Empty input body returns empty array or error
- Non-text body type is refused

## How this service works

NDJSON to a JSON array. POST newline-delimited JSON; the response is a pretty-printed array of the parsed values. Blank lines are skipped and a line that does not parse is refused naming the 1-based line number — which is the reason to run a parser over a log file instead of wrapping it in brackets.

## Output

A pretty-printed JSON array containing each successfully parsed NDJSON value as an element. Blank lines are silently skipped. If any line fails to parse, the request is rejected with an error message identifying the 1-based line number of the offending line — no partial output is returned in that case.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method",
    "bodyType",
    "body"
   ],
   "properties": {
    "body": {
     "type": "string",
     "maxLength": 262144,
     "description": "the raw NDJSON file as the request body, up to 256 KB"
    },
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "type": "string",
     "const": "POST"
    },
    "bodyType": {
     "type": "string",
     "const": "text"
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type",
    "format"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "text"
    },
    "format": {
     "type": "string",
     "const": "application/json",
     "description": "the converted JSON file as the response body (application/json)"
    },
    "example": {
     "type": "string",
     "description": "the sample request body above, converted — what a the converted JSON file as the response body (application/json) looks like"
    }
   },
   "additionalProperties": false
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/ndjson-to-json-array-converter-d7c26202/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from toolshed.lemon-agent.dev](https://www.zero.xyz/host/toolshed.lemon-agent.dev/llms.txt)