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402utils XML-to-JSON Converter
x402
402utils XML-to-JSON Converter is a paid API for AI agents from 402utils.com, paid per call via x402, $0.002/call, status unknown (last checked 2026-10-12).
Converts raw XML documents to clean, structured JSON with attribute mapping, array coercion, and anti-XXE security protections
Price / call$0.002
Success—
StatusUnknown
How this service works
Convert XML to clean JSON. POST raw XML (XML or text/plain Content-Type) or a JSON envelope {xml, alwaysArray}. Attributes land under "@_" keys, mixed-content text under "#text", repeated siblings become arrays, and alwaysArray forces arrays for listed tags even on a single occurrence. Numeric character references decode. DTD entities and DOCTYPE internal subsets rejected (anti-XXE / billion-laughs). Max 5 MB.
Output
A JSON object where XML elements become object keys, attributes are stored under '@_' keys, mixed-content text goes under '#text' keys, repeated sibling elements become arrays, and any tags listed in alwaysArray are always arrays even with a single occurrence. Numeric character references are decoded. DTD entities and DOCTYPE internal subsets are rejected with a 422 error.
Example use cases
Example prompt
“Convert this XML to JSON for me — make sure the 'item' and 'entry' tags always come back as arrays even if there's only one of them: <?xml version="1.0"?><feed><entry><title>Hello</title></entry></feed>”
Technical details
Endpoint
POSThttps://402utils.com/v1/xml-to-json?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need to convert XML to JSON with fine-grained control over attribute mapping and array coercion, especially when the source XML may have single-occurrence tags that should always parse as arrays. Prefer this over generic XML libraries when you need built-in XXE protection, a simple HTTP API without dependencies, and predictable '@_' attribute key conventions. Ideal for parsing SOAP responses, RSS/Atom feeds, configuration files, or any XML API response that needs to be consumed as JSON by downstream code.
Side effects
- XML exceeds 5 MB limit — request rejected
- DTD entity declarations or DOCTYPE internal subsets present — rejected with 422 to prevent XXE/billion-laughs attacks
- Malformed or non-well-formed XML — parse error returned
- Invalid Content-Type (must be application/xml, text/plain, or application/json envelope)
- alwaysArray list exceeds 100 tag names — rejected
- Network timeout on large documents near the size limit
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| xml | string | XML document to convert. Max 5 MB UTF-8. DTD entity declarations and DOCTYPE internal subsets are rejected (422). |
| alwaysArray | array | Tag names that must always parse as arrays, even when only one occurrence exists (max 100). |
Output
Schema · Response
{
"type": "json",
"example": {
"json": {
"order": {
"@_id": "A-17",
"item": [
{
"#text": "Café grinder",
"@_sku": "X1"
},
{
"#text": "Filter",
"@_sku": "X2"
}
]
}
},
"root": "order"
}
}Tags
x402
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