ForHosting KIT · Data & Files

JSON to XML

Somewhere behind every modern JSON API there's usually one older system that still only accepts XML — a billing platform, a government portal, an ERP integration nobody wants to rebuild. This endpoint bridges that gap, emitting well-formed XML from your JSON without you having to hand-write a serializer.

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The direction nobody enjoys building

Teams write JSON-to-XML serializers far less often than the reverse, and it shows: naive implementations produce XML that technically parses but breaks the moment it hits a strict validator, because JSON has no native concept of attributes, namespaces or element ordering the way XML does. Someone has to decide, by convention, which JSON keys become attributes and which become child elements, and get that decision right consistently across thousands of records. data.json_to_xml makes that decision predictably, every time, so the output is XML a strict system will actually accept rather than XML that merely looks correct.

Sending the request and getting XML back

POST your JSON payload to /data/json-to-xml along with your target root element name, and you'll get a task_id right away while the conversion happens in the background. The resulting XML document arrives through a signed webhook call or sits behind a signed link valid for 24 hours, ready to hand off to whichever system is waiting for it.

Why the older format still gets the last word

A surprising number of interfaces built in the SOAP and EDI era, and plenty of government and financial integrations built since, still speak strict XML because that's what their schema validation, their signing infrastructure or their compliance layer was built around, and rewriting that layer costs far more than adapting the payload on the way in. Modern teams increasingly build everything internally in JSON and only produce XML at the last mile, right before it crosses into a system that demands it — which is exactly the workflow this endpoint was designed to support.

Where it sits in the pipeline

A typical setup keeps a service's internal data model entirely in JSON, then calls this endpoint only at the outbound edge, converting each record to XML immediately before it's submitted to a partner API, a SOAP gateway or a legacy import job. Because the task is async and billed per request, a nightly export of several thousand records costs the same per document whether it's submitted as one batch at midnight or trickled in throughout the day, and nothing is charged unless a conversion actually completes.

What you can do with it

SOAP request assembly

An integration service converts internal JSON order records to XML before wrapping them into a SOAP request for a legacy fulfillment partner.

Government portal submissions

A compliance system converts JSON tax or customs data to the strict XML format a government portal requires before upload.

Feed generation for syndication

A publishing platform converts internal JSON article records to XML to generate RSS-compatible feeds for downstream subscribers.

ERP import files

A finance tool converts JSON invoice batches to the XML import format a legacy ERP system expects, avoiding manual re-entry.

FAQ

How do I convert JSON to XML with the API?

POST your JSON payload and a root element name to /data/json-to-xml, save the returned task_id, and receive the XML by webhook or a signed link valid for 24 hours.

Is the JSON to XML API free?

No, there is no free tier or trial; it costs $0.002 per request, and a failed conversion is never charged.

Does the output XML validate against strict schemas?

The output is well-formed XML with consistent element and attribute mapping; if your target system requires a specific schema, provide the mapping rules so the structure matches it.

How are JSON arrays represented in XML?

Array items become repeated sibling elements under their parent, matching how most XML consumers expect repeated data to look.

Can I control which fields become attributes?

Yes, key naming conventions in the request let you mark specific fields to be emitted as XML attributes instead of child elements.

Is this different from just wrapping JSON in tags?

Yes — a proper conversion handles nesting, arrays, attributes, escaping and character encoding correctly, which naive tag-wrapping does not.

Can I convert large batches at once?

Yes, submit one async task per document and collect each result by webhook, which scales cleanly for batch and overnight jobs.

Is my JSON data stored after conversion?

No, source data and generated XML are deleted after the retention window and are never used for training.

For developers — API access

Everything on this page is available programmatically. This section is for teams who want to wire it into their own systems; everyone else can just use the tool above.

API endpoint

POSThttps://api.kit.forhosting.com/data/json-to-xml

Prefer to automate it? One authenticated POST creates the task; the result comes back by webhook or a signed link. The same capability also runs here on the web, and soon from our app, email and Telegram.

Call it from your stack

curl -X POST https://api.kit.forhosting.com/data/json-to-xml \
  -H "Authorization: Bearer $KIT_KEY" \
  -H "Content-Type: application/json" \
  -d &#39;{"input":"…"}'

const res = await fetch("https://api.kit.forhosting.com/data/json-to-xml", {
  method: "POST",
  headers: {
    "Authorization": `Bearer ${process.env.KIT_KEY}`,
    "Content-Type": "application/json"
  },
  body: JSON.stringify({
    "input": "…"
  })
});
const { task_id } = await res.json();

import os, requests

res = requests.post(
    "https://api.kit.forhosting.com/data/json-to-xml",
    headers={"Authorization": f"Bearer {os.environ[&#39;KIT_KEY']}"},
    json={
    "input": "…"
},
)
task_id = res.json()["task_id"]

<?php
$res = file_get_contents("https://api.kit.forhosting.com/data/json-to-xml", false, stream_context_create([
  "http" => [
    "method"  => "POST",
    "header"  => "Authorization: Bearer " . getenv("KIT_KEY") . "\r\nContent-Type: application/json",
    "content" => &#39;{"input":"…"}',
  ],
]));
$task = json_decode($res, true);

body := bytes.NewBufferString(`{"input":"…"}`)
req, _ := http.NewRequest("POST", "https://api.kit.forhosting.com/data/json-to-xml", body)
req.Header.Set("Authorization", "Bearer "+os.Getenv("KIT_KEY"))
req.Header.Set("Content-Type", "application/json")
res, _ := http.DefaultClient.Do(req)

Example request

{
  "input": "…"
}

Example response

{
  "task_id": "tsk_a1b2c3d4e5f6a1b2c3d4e5f6",
  "type": "data.json_to_xml",
  "status": "queued",
  "_links": {
    "result": "/tasks/tsk_…/result"
  }
}

The API is asynchronous: the call returns a task_id immediately and the result arrives by webhook. Polling is capped at 1 req/s per task.

Pricing

Per request$0.002

Published price — no tokens, no invented credits. A failed task is never charged.

Limits

max_mb 25

Errors

HTTP	Code	Meaning
`401`	`unauthorized`	Missing or invalid API key.
`402`	`insufficient_balance`	Your balance doesn't cover the task price.
`404`	`unknown_type`	That task type doesn't exist.
`429`	`rate_limited`	Too many requests. Use the webhook instead of polling.

Read the full KIT documentation →

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