Skip to content
Generative Engine for HubSpot CMS

Stop coding rigid HubSpot themes. Generate bespoke modules instantly.

Turn design mockups, raw copy, or a conversational brief into native, production-ready HubSpot CMS modules. The AI writes your fields.json and HubDB config for you.

THREE INGESTION WORKFLOWS

Three paths from concept to native code.

Start from a visual, a written brief, or an abstract requirement — the AI guides you through discovery and assembles production-grade HubSpot modules.
01

Image-to-Module Discovery

Upload a screenshot or high-fidelity mockup. The engine runs structural analysis, isolates repeating layouts, recommends edit fields, and guides you through compilation.
02

Text-to-Schema Synthesizer

Paste raw content, functional specs, or structured copy. The AI processes the hierarchy, maps variable content inputs, and generates standard field configuration files natively.
03

Conversational Developer Sandbox

Launch a free chat session and build step by step. Instruct the AI on custom CSS, HubDB relationships, and JavaScript behaviors through iterative, guided prompts.
Data-driven orchestration

Seamless HubDB & CRM integrations.

Dynamic layouts usually mean hours of schema config and fragile server-side syntax. Flexbox Pro links modules directly to HubDB and native CRM objects like Contacts and Companies, then compiles clean, performance-optimized markup automatically.

Non-technical teams manage real-time event tables, staff directories, and product catalogs on their own.

Screenshot 2026-07-23 103004
ENTERPRISE ASSET VAULT
50

Premium pre-built modules, ready to deploy.

Beyond on-demand generation, tap a curated repository of enterprise-grade, responsive custom modules — complex HubDB elements, CRM contact directories, secure company boards, and dynamic navigation.

HubDB elements

Event tables, catalogs & resource grids wired to live tables.

CRM directories

Filterable team & contact boards from native CRM objects.

Company boards

Partner & client directories with safe query bindings.

Dynamic navigation

Data-driven menus that stay in sync automatically.

COMMERCIAL TIERS

Transparent pricing built to scale.

Start free on Light to test the engine, or unlock the full enterprise platform with Pro.

FLEXBOX LIGHT

The ideal sandbox tier

Test the engine — completely free

  • 1 free AI generation credit
  • 1 free AI generation credit
  • 1 free AI generation credit
  • 1 free AI generation credit
Try free
MOST POPULAR

FLEXBOX PRO

The enterprise powerhouse

Scale bespoke module creation.

  • 20 AI generation credits
  • 20 AI generation credits
  • 20 AI generation credits
  • 20 AI generation credits
Upgrade now
Engineering FAQs

Structural, compliance & hosting answers.

How does the platform differ from standard HubSpot CMS themes?

 Traditional themes provide a locked set of pre-coded templates and layout blocks. Flexbox Pro is a dynamic generative developer tool: upload design layouts, paste copy briefs, or run a step-by-step chat session to build custom modules for unique requirements. It eliminates structural limitations, letting agencies build custom sites without compromising design or code quality. 

What structural files are generated when I download a module?

 Every exported package contains 100% native, HubSpot-compatible source code compiled to the latest development standard: a custom editing interface schema (fields.json), a rendering template wrapper (module.html), scoped non-leaking layouts (module.css), and lightweight behavior scripts (module.js). All files are fully accessible and editable in HubSpot Design Manager or local code tools. 

What structural files are generated when I download a module?

 Every exported package contains 100% native, HubSpot-compatible source code compiled to the latest development standard: a custom editing interface schema (fields.json), a rendering template wrapper (module.html), scoped non-leaking layouts (module.css), and lightweight behavior scripts (module.js). All files are fully accessible and editable in HubSpot Design Manager or local code tools. 

What structural files are generated when I download a module?

 Every exported package contains 100% native, HubSpot-compatible source code compiled to the latest development standard: a custom editing interface schema (fields.json), a rendering template wrapper (module.html), scoped non-leaking layouts (module.css), and lightweight behavior scripts (module.js). All files are fully accessible and editable in HubSpot Design Manager or local code tools.