Carousels MCP from Houtini

List available carousel design templates (built-in + user brand kits).

When to call: Before creating a carousel, to check if the user has custom brand templates. If they do, suggest using their branded design instead of the default.

Returns: Array of template objects with name, description, and builtin flag.

Convert content into a structured slide plan WITHOUT rendering. Returns editable JSON.

When to call: When the user wants to review or edit slide content before rendering. Also use as the first step in the enhanced workflow (preview → enhance with Gemini → render).

Workflow: Enhanced visuals

1. Call preview_slides with the content

2. Review the returned slide plan. Each slide may have an aiSuggestion field

3. For slides with aiSuggestions, use Gemini MCP tools:

   • generate_svg for diagrams, charts, flowcharts

   • generate_image for hero images, illustrations

   • gemini_chat to rewrite slide copy for punchier hooks

4. Inject generated SVGs into the slide's customSvg field

5. Call render_slides with the enhanced plan

Returns: SlidePlan JSON with slides array, sourceTitle, summary.

Render a slide plan into SVG + PDF (LinkedIn) or PNG (Instagram/Threads).

When to call: After preview_slides when you've reviewed or enhanced the slide plan. Also accepts manually crafted slide plans.

Supports Gemini-generated visuals: Any slide in the plan can include:

• customSvg: Raw SVG content (from generate_svg) embedded directly into the slide

• customImageUrl: Local file path to an image (from generate_image)

Tip: Run list_templates first to check for user brand kits.

Returns: Output paths (SVG, PDF/PNG), template used, platform.

Full pipeline: content → slides → PDF/PNG in one call. Supports three input modes:

Mode 1 (Content provided): Pass article text, markdown, or transcript in the content field. The tool extracts key points, generates slides, and produces output immediately.

Mode 2 (URL provided): Pass a sourceUrl. The tool fetches the page, extracts article content, and runs the full pipeline. If the page is JavaScript-rendered and extraction fails, the tool returns fallback instructions to use firecrawl_scrape or web_fetch instead.

Mode 3 (Topic only): Pass a topic without content or sourceUrl. The tool returns orchestration instructions with multiple research workflows: • Web Research: Use gemini_deep_research → pass result as content • YouTube Summary: Use supadata_transcript → summarize with gemini_chat → pass as content • Data-Driven: Use gemini_deep_research → preview_slides → generate_svg for charts → render_slides • Quick Draft: Use web_fetch to grab a page → pass as content

Common workflows the user might request:

1. "Make a carousel about [topic]" → Call with topic param, follow returned workflow

2. "Turn this article into a carousel: [url]" → Call with sourceUrl param

3. "Here's my content, make a carousel" → Call with content param

4. "Research [topic] and make a carousel with charts" → Call with topic, follow Data-Driven workflow

Platforms: linkedin (1080×1350 PDF), instagram (1080×1080 PNGs), threads (1080×1350 PNGs)

After rendering: Consider using analyze_image (Gemini MCP) to review the output quality.

Create a custom brand template by overriding colors, typography, and layout from a base template.

When to call: When the user wants their carousels to match their brand identity. Saves the template for future use.

Tips:

• Start from 'professional' as base. It has the most polished defaults

• Pick a dominant accent hue and build a monochromatic gradient (same hue, two lightness stops)

• Use warm backgrounds (#F5F3EF) not cold (#FAFAFA)

• Avoid Inter, Roboto, Arial. Choose distinctive fonts like Plus Jakarta Sans, Space Grotesk, Outfit

• Pair a geometric display font with an editorial serif body font (Frank Ruhl Libre, Source Serif 4)

Returns: Saved template path and confirmation.