Assemble page from structured components

Patch HTML element(s) by CSS selector

Set attribute on element(s) by CSS selector

Replace a range of lines in an HTML file with new content (most token-efficient edit — send only the changed lines)

Replace a rendered section in an HTML file with a new component. Pages rendered with render_page embed section markers. Use list_sections to discover available indices. Provide component+props to re-render, or html for raw replacement.

Insert a new component section at a specific index, pushing existing sections forward. Uses the same section marker system as render_page. Auto-renumbers all subsequent sections.

List all component sections in an HTML file that was built with render_page. Returns section indices, component types, and sizes.

Read/analyze existing HTML file. Use mode='text' for token-efficient plain text extraction with offset/limit progressive reading.

Write raw HTML content directly to file

Write content as formatted HTML file

Format/beautify an existing HTML file

Preview rendered HTML string without writing

List available template shells (optionally filter by category)

Propagate an entity edit through the dependency graph, updating all transitively affected sections

Audit document for stale cross-section references and dependency violations

List available interactive components (optionally filter by category)

Get template metadata including available variables with defaults

Get component schema with available props

Register a custom template at runtime for immediate use with render_page/preview_html