JSON to YAML

json-to-yaml · version 1.0.0 · YAML, TOML, INI, XML & TSV · free, no key needed

Convert JSON data to a YAML string.

Use when you need to: json to yaml · stringify yaml · convert json to yaml.

Supported

• json to yaml
• stringify yaml
• convert json to yaml

Not supported

• yaml to json
• read files
• write files

Behavior

• Converts valid JSON structured data into a YAML document.
• Output is a standard string format suitable for configuration files.

Input

• data (object or array or string or number or boolean or null, required)

Output

• yaml (string, required)

Limits

• max input bytes: 262144
• max depth: 20

Example

Request input:

{
  "data": {
    "name": "Ada",
    "city": "London"
  }
}

Response:

{
  "result": {
    "yaml": "name: Ada\ncity: London\n"
  }
}

How to call it

MCP

Connect https://computefirst.net/mcp (setup), then call execute with:

{
  "id": "json-to-yaml",
  "version": "1.0.0",
  "input": {
    "data": {
      "name": "Ada",
      "city": "London"
    }
  }
}

HTTP (no key)

curl -X POST https://computefirst.net/v1/tools/json-to-yaml/versions/1.0.0/execute \
  -H "Content-Type: application/json" \
  -d '{"data":{"name":"Ada","city":"London"}}'

The machine-readable contract is at /v1/tools/json-to-yaml/versions/1.0.0.

CLI

node cli.mjs run json-to-yaml 1.0.0 --input input.json --base-url https://computefirst.net

Get the client at /clients/cli/.

Related tools

• JSON to INI: Convert JSON data to an INI string.
• JSON to TOML: Convert JSON data to a TOML string.
• JSON to TSV: Convert a JSON array of objects to a TSV string.
• JSON to XML: Convert JSON data to an XML string.
• YAML to JSON: Convert a YAML string to a JSON object or array.
• INI to JSON: Convert an INI string to a JSON object.