Data Conversion API

Convert structured data between JSON, CSV, TSV, YAML, and XML from your code. One endpoint, five formats, clean string output.

Try it

curl -X POST "https://data.wrapper-agency.com/api/v1/convert" \
  -H "Content-Type: application/json" \
  -d '{"from":"json","to":"yaml","data":"[\n  { \"id\": 1, \"name\": \"Ada Lovelace\", \"role\": \"Engineer\", \"active\": true },\n  { \"id\": 2, \"name\": \"Alan Turing\", \"role\": \"Researcher\", \"active\": false }\n]"}'

Free endpoint (live during beta)

POST { from, to, data }. from and to are one of json, csv, tsv, yaml, xml. data is your source document as a string.

POST https://data.wrapper-agency.com/api/v1/convert
Content-Type: application/json

{
  "from": "json",
  "to": "csv",
  "data": "[{\"id\":1,\"name\":\"Ada\"}]"
}

→ 200 OK
{
  "from": "json",
  "to": "csv",
  "output": "id,name\n1,Ada"
}

GET (for small payloads)

Pass the data inline for quick tests and links:

curl "https://data.wrapper-agency.com/api/v1/convert?from=csv&to=json&data=id,name%0A1,Ada"

Bulk / large payloads (paid, x402)

For high-volume or large documents, the per-call endpoint accepts the same body and is priced per request in USDC on Base (x402). Built for AI agents and automated pipelines.

POST https://data.wrapper-agency.com/api/v1/pro/convert
Content-Type: application/json
X-PAYMENT: <x402 payment header>

{ "from": "xml", "to": "json", "data": "<root>…</root>" }

Calling without payment returns HTTP 402 with the payment requirements, per the x402 spec. See the OpenAPI spec.

Why FormatForge

One API, every common format

JSON ⇄ CSV ⇄ TSV ⇄ YAML ⇄ XML, in any direction.

Predictable output

RFC 4180 CSV quoting, indentation-stable YAML, well-formed XML with a root element, and pretty-printed JSON.

Stateless & private

Nothing is stored. Each call is independent.

New to this? Read the developer guide.