xml_to_yaml

Parse an XML string into YAML, preserving the root element name as the top-level key.

Parameters

Parameter	Type	Required	Description
input	string	Yes	XML string to convert.

Response

Field	Type	Description
output	string	The converted YAML string.

Example

{
	"input": "<person id=\"1\"><name>Alice</name><tag>admin</tag><tag>user</tag></person>"
}

Result:

{
	"output": "person:\n  '@id': '1'\n  name: Alice\n  tag:\n  - admin\n  - user\n"
}

Errors

Each failure carries a precise code in the response. Argument-schema and server errors are JSON-RPC protocol errors; a rejected value is returned as a tool result with isError: true (so the agent can read the code and self-correct).

Code	When	Delivered as
invalid_arguments	input is missing or not a string.	protocol error (invalid_params)
invalid_xml	The input string is not valid XML or has no root element.	tool error (isError)
internal_error	An unexpected server error.	protocol error (internal_error)

Mapping Convention

XML	YAML
Element <foo>	Mapping key foo
Attribute id="1"	@id: '1' in the element's mapping
Repeated elements with same tag	YAML sequence under that tag key
Text-only element <foo>bar</foo>	Scalar string foo: bar
Mixed element (text + children)	$text key added to the element's mapping
Self-closing element <foo/>	foo: null

Notes

• All attribute and text values are returned as strings. Type inference is not performed.
• Round-trips between xml_to_yaml and yaml_to_xml are not guaranteed to be lossless.