Mdast Builder

Mdast Builder parses Markdown into an MDast and exposes a transformation pipeline to modify structure as requested. It targets developers, content engineers, and tooling teams that automate Markdown workflows. The goal is deterministic, auditable edits to content structure without rendering results.
Conceptually, a Markdown parser yields an MDast, and a transformer applies operations such as add_heading, wrap_code, remove_node, or add_link by walking and mutating the tree. Outputs include a JSON MDast and optional regenerated Markdown for downstream systems. The tool emphasizes correctness, testability, and compatibility with CommonMark and GitHub Flavored Markdown standards.
Beneficiaries include static site pipelines, content validators, and editors that enforce architectural rules on Markdown documents. Unique value lies in explicit operation definitions, strict validation, and the ability to produce both the MDast and the Markdown string in a single workflow. Core features include input validation, operation sequencing, MDast serialization, and optional plugins for advanced transformations.