---
title: "Convert TOML 1.0 to JSON and JSON to TOML, reporting anything that cannot round-trip."
method: POST
path: "/api/v1/toml-json"
tags: ["Converters"]
---

# Convert TOML 1.0 to JSON and JSON to TOML, reporting anything that cannot round-trip.

`POST /api/v1/toml-json`

## Request

- Base URL: `https://programmes.net`
- URL: `https://programmes.net/api/v1/toml-json`
- Auth: none declared

TOML to JSON Converter. Operations: `to-json` — Parse TOML and return pretty-printed JSON. `to-toml` — Convert a JSON object to TOML (nulls are dropped with a warning).

## Request body

- union
  - TomlJsonToJson: Parse TOML and return pretty-printed JSON.
    - `operation` 'to-json', required
    - `input` string: A TOML document.
    - `options` object
      - `indent` integer: JSON indent in spaces.
  - TomlJsonToToml: Convert a JSON object to TOML (nulls are dropped with a warning).
    - `operation` 'to-toml', required
    - `input` string: A JSON object.
    - `options` object
      - `detectDates` boolean: Emit RFC 3339 date-time strings as TOML date-times.

## Response `200`

The operation ran.

- object
  - `ok` unknown, required
  - `tool` 'toml-json', required
  - `operation` 'to-json' | 'to-toml', required
  - `result` unknown, required

## Other responses

- `400`: The request is not valid (https://programmes.net/api#invalid-request); The tool has no such operation (https://programmes.net/api#unknown-operation)
- `404`: No such tool (https://programmes.net/api#unknown-tool)
- `413`: The request or its input is too large (https://programmes.net/api#content-too-large)
- `415`: The body must be JSON (https://programmes.net/api#unsupported-media-type)
- `422`: An option is missing, of the wrong type or out of range (https://programmes.net/api#invalid-options); This call needs more CPU than one API call may use (https://programmes.net/api#refused); The operation could not process the input (https://programmes.net/api#tool-error)
- `429`: Too many requests (https://programmes.net/api#rate-limited)
- `500`: Internal error (https://programmes.net/api#internal-error)

---

[API](https://skmtc.dev/programmes/apis/programmes-net-api.md) · [All operations](https://skmtc.dev/programmes/apis/programmes-net-api/llms.txt) · [OpenAPI document](https://skmtc.dev/programmes/apis/programmes-net-api/revisions/aa939784a2e6?raw)