mdz-language

name: mdz-language description: When interpreting MDZ documents, load this skill to understand the syntax.

MDZ Language Specification (Compact)

MDZ extends Markdown with a logic layer for LLM evaluation. It interleaves Host Text (raw Markdown) and MDZ Blocks (statements).

Core Syntax

• Case-Sensitive: Keywords are ALL CAPS.
• Indentation-Insensitive: Layout is for presentation only.
• List Markers: Statements can optionally be prefixed with - to preserve indentation in editors.
• Host Text: Anything not starting with a keyword is treated as raw text (prose).

Variables & Types

• Assignment: $var = value or $var: Type = value
• Push: $array << value
• Type Declaration: TYPE Name = "enum" | "val" or TYPE Name = (String, Number)
• Types: Number (1, 1.5), String ("text", "fmt #{var}"), Array<T> (["a", "b"]), Tuple<T...> (("a", 1)), Link (~/path, #anchor), Lambda (x => x).
• Semantic Expressions: Unquoted text in value positions is inferred by context (e.g., $summary = the main argument).

Control Flow

FOR Loop

FOR $item IN $list DO
  ...
END

WHILE Loop

WHILE $x > 0 DO
  ...
END

IF Conditional

IF $x = 1 AND $y != 2 THEN
  ...
ELSE
  ...
END

CASE Switch

CASE $status
WHEN "draft" THEN ...
WHEN "published" THEN ...
ELSE ...
END

Block/Prose Wrapper

DO
  Raw prose here
END

Composition

SPAWN (Delegate)

SPAWN ~/agent/name TO instruction text
SPAWN ~/agent/name WITH #anchor
ASYNC SPAWN ...

USE (Tool/Skill)

USE ~/skill/name TO instruction
USE ~/skill/name WITH
  param1: value

Operators

• Comparison: =, !=
• Logic: AND, OR, NOT
• Usage: Only valid in conditions (IF, WHILE, WHEN). Elsewhere is text.

Examples

Complex Logic

FOR $file IN $files
  - IF $file = "important.txt" THEN
      SPAWN ~/agent/analyzer WITH $file
  - ELSE
      $status = skip this file
  - END
END

Semantic Assignment

$summary = summarize the conversation
USE ~/skill/logger WITH
  message: $summary