Business details

TOPA APP BUILDER – AI SOFTWARE DEVELOPMENT, CODING AGENT, BUILD, VERIFICATION & DEPLOYMENT PLATFORM

NON-EXCLUSIVE PERPETUAL COMMERCIAL SOURCE-CODE LICENCE – £25,000

Topa App Builder is a substantial AI-powered software development platform designed to help users create, import, modify, build, test, verify, preview and deliver software projects through one integrated environment.

This listing is for ONE perpetual, non-exclusive commercial source-code licence / deployable copy of the Topa App Builder platform.

The buyer receives their own licensed source-code copy together with the agreed setup, documentation and handover package.

IMPORTANT LICENCE TERMS

This is NOT an exclusive sale of the entire Topa platform and is NOT a transfer of worldwide ownership of the underlying product.

The original master platform, core intellectual property and the seller's rights remain with the seller.

The seller retains the right to:

• Continue developing Topa App Builder
• Continue using the master platform
• Produce future versions and improvements
• Licence or sell additional non-exclusive copies to other buyers

The buyer receives commercial use rights for their licensed deployment subject to the final software licence agreement.

The buyer may configure and adapt their licensed copy for their own organisation and agreed internal/white-label use. Exact modification, deployment, branding and redistribution rights will be documented in the final licence agreement.

ABOUT TOPA APP BUILDER

Topa App Builder is more than a simple AI chatbot or code-generation interface.

The platform combines:

• AI software-development agents
• Project and source-code management
• Integrated development workspace
• Real local build execution
• Automated testing workflows
• Browser-based verification
• Build and runtime evidence
• Project previews
• Error detection and repair
• Backup and recovery
• Deployment functionality
• Delivery/source ZIP generation
• Local AI support
• Multiple external AI-provider pathways
• Security and access controls
• Buyer-controlled infrastructure and credentials

The objective is to provide a closed-loop software development workflow where AI-generated or AI-modified code can be executed, checked and evidenced rather than simply generated and assumed to work.

PROJECT CREATION & IMPORT

The platform supports software project creation and management, including:

• Create new projects
• Import existing projects
• ZIP project upload
• Remote project import
• Project file management
• Source-code management
• File tools
• Project restoration
• ZIP import/export
• Backup and recovery
• Delivery of the latest source package

INTEGRATED DEVELOPMENT WORKSPACE

Topa provides an integrated development workspace combining key development functions in one environment.

The workspace includes areas for:

• Code/project files
• AI development chat
• Application preview
• Build information
• Verification information
• Browser evidence
• Delivery information
• Agent/project memory

This allows a user to work with the project's source, communicate with the AI development system and review the resulting application from the same platform.

AI DEVELOPMENT AGENTS

Topa includes AI development and supervisory workflows.

TOPA AGENT

The main development agent can assist with:

• Understanding development requests
• Analysing project requirements
• Generating implementation plans
• Working with existing project files
• Creating or modifying source code
• Maintaining project context
• Using persistent project memory
• Applying approved development changes

PLANNING & APPROVAL WORKFLOW

Development tasks can follow a controlled plan-and-apply workflow.

The platform can:

• Analyse the user's request
• Generate a proposed implementation plan
• Present changes for approval
• Apply approved changes
• Support an auto-apply workflow where configured

This gives the operator control over changes rather than forcing every AI-generated modification directly into the project.

TOPA PREVIEW

Topa includes preview-related functionality allowing project output and application state to be reviewed.

TOPA ONE / SUPERVISORY WORKFLOW

The architecture also includes a senior/supervisory Topa role designed to participate in review, verification and repair workflows.

AGENT MEMORY & CONTEXT

Topa includes durable project/agent memory functionality.

This can maintain useful context across development sessions and includes:

• Persistent agent memory
• Project-related conversation context
• Memory management
• Session/message records
• Project-specific development context

MULTI-PROVIDER AI ARCHITECTURE

The platform has been designed with multiple AI-provider pathways rather than being permanently tied to a single model supplier.

Supported/integrated provider paths in the architecture include:

• Local Codex
• Topa AI Local
• Groq
• Gemini
• OpenRouter
• DeepSeek
• Cloudflare Workers AI
• AI gateway/fallback pathways where configured

The platform includes provider-selection and fallback architecture.

Actual external AI-provider availability depends on the buyer's own accounts, API keys, provider terms and configuration.

LOCAL AI / OLLAMA SUPPORT

Topa can also work with local AI models.

The local AI architecture supports Ollama-based operation and a Topa AI bridge workflow.

This allows technically suitable buyers to use compatible local models on their own hardware rather than relying entirely on paid external AI APIs.

A buyer can therefore choose an architecture appropriate to their own privacy, cost and infrastructure requirements.

LOCAL RUNNER – REAL PROJECT EXECUTION

A major component of the Topa platform is its separate local Runner.

The Runner is designed to operate on the user's own machine and perform real development tasks against project source code.

Runner capabilities include:

• Synchronising approved project/source files
• Creating and managing local project workspaces
• Installing project dependencies
• Running project commands
• Executing actual builds
• Supporting type-checking workflows
• Supporting lint workflows
• Supporting automated test execution
• Starting built applications
• Selecting available local ports
• Running application previews
• Working with browser-verification processes
• Capturing build/runtime results
• Reporting evidence and status back to the Topa platform

The Runner provides an important distinction between simply generating code and actually attempting to execute and verify the resulting project.

REAL BUILD & TEST EVIDENCE

Topa's workflow is designed to record genuine build/test outcomes.

Where applicable, the system can execute and report:

• Production build results
• Type-check results
• Lint results
• Automated tests
• Runtime/build errors
• PASS / FAIL status

This is intended to reduce reliance on unsupported AI statements such as "the application should now work."

BROWSER VERIFICATION

The platform includes browser-based inspection and evidence workflows.

Depending on the project and configured environment, verification evidence can include:

• Application loading
• Browser/DOM inspection
• Browser console errors
• Failed network requests
• Runtime behaviour
• Screenshot/PNG evidence

Where browser verification has not genuinely completed, the architecture is capable of reporting that verification has not been completed rather than automatically presenting an unsupported success result.

APPLICATION PREVIEWS

Topa supports application-preview workflows including:

• Project/application preview
• Hosted/public preview where configured
• Shareable preview URLs where applicable
• Local Runner-based previews
• Static application preview workflows
• Cloudflare quick-tunnel support within the Runner architecture where used

Static applications have been tested through the platform workflow without requiring the Windows Runner.

Compiled React/Vite applications require the buyer to operate the supplied Runner within their own compatible machine/environment for the complete compiled build and execution workflow.

SELF-REPAIR & RECOVERY

The platform contains automated repair and recovery functionality intended to identify and attempt to correct common development and build problems.

Repair workflows can relate to areas such as:

• Project/source problems
• Package configuration
• Project manifests
• Build issues
• Application configuration
• Platform/project recovery operations

WATCHDOG / MONITORING

Topa includes monitoring/watchdog-related architecture designed to support fault detection, platform health and recovery workflows.

FAULT ATTRIBUTION

A useful part of the platform architecture is the ability to distinguish different classes of failure.

Faults can be categorised in areas such as:

• Platform
• Runner
• Project code
• External service/provider
• User input or configuration

This helps distinguish a genuine product/platform failure from an error caused by a project dependency, third-party provider or local buyer environment.

BUILD JOB MANAGEMENT

Topa includes build-job infrastructure allowing the platform to:

• Start builds
• Track build status
• Associate builds with projects
• Store build results
• Record build evidence
• Display build outcomes

BACKUPS & RESTORE

Project backup and recovery functionality is included.

This supports workflows for:

• Project backups
• Source preservation
• Restore operations
• Recovery-related tasks

DELIVERY SYSTEM

The platform includes a dedicated delivery workflow.

Depending on the project state, the Delivery area can provide information such as:

• Live Preview URL
• Latest source ZIP
• Build status
• Verification/evidence
• Runner status and warnings

This is designed to make project handover and delivery clearer and more auditable.

DEPLOYMENT & PUBLISHING

Topa contains deployment/publishing functionality.

The architecture includes Netlify deployment support using the buyer's own deployment account/token.

The platform contains functionality relating to:

• Deployment targets
• Deployment records
• Publishing workflows
• Project delivery

The buyer remains responsible for their own hosting/deployment accounts, applicable subscription charges and third-party service terms.

PROJECT & FILE TOOLS

Topa includes file-management functionality supporting day-to-day development operations, including:

• Project file browsing
• Source management
• Import tools
• ZIP import
• Remote import
• Export/delivery
• Backup and restoration

ADMINISTRATION & SETTINGS

The product includes administration and configuration areas for managing the platform and associated services.

Interface areas include functionality/routes/components for:

• Dashboard
• Projects
• Workspace
• Agent
• Jobs
• Builds
• Backups
• Runner
• File Tools
• Administration
• Settings
• Deployment/Publishing
• Delivery
• Browser Evidence
• Agent Memory
• AI Provider Selection
• Project Import
• ZIP Import

BACKEND & DATA ARCHITECTURE

Topa uses Supabase architecture for database/authentication/storage-related functionality.

Platform data and operational areas include records for functions such as:

• Projects
• Project files
• Agent sessions
• Agent messages
• Agent memory
• Coding jobs
• Builds
• Backups
• Imports
• Runner status
• Deployment targets
• Deployments
• Platform maintenance
• Patches and repairs
• Platform/owner settings

SECURITY

The platform/codebase includes security-oriented controls and protections.

These include functionality relating to:

• Row Level Security (RLS)
• Sensitive-token encryption
• AES-256-GCM encryption functionality
• SSRF protection
• ZIP-slip/path traversal protection
• Symlink safety
• Secret-file exclusions
• Access controls
• Protection of sensitive deployment credentials

Buyer-specific secrets, passwords, private API keys and external-service credentials are not intended to be included as shared seller credentials in the buyer's source package.

The buyer uses their own credentials and accounts.

TECHNOLOGY STACK

Topa App Builder uses a modern full-stack web-development architecture including technologies such as:

• React 19
• TypeScript
• TanStack Start
• Vite
• Supabase
• Tailwind
• Radix/shadcn-style interface components
• Vitest

TESTING & CURRENT VERIFICATION

The current documented/final verification status supplied for the platform includes:

• 414 automated tests passing
• Production build passing
• Practical browser testing against a public URL passing

A serious buyer should be given the opportunity during technical due diligence/handover to review and reproduce applicable verification steps.

The system is being offered as working software rather than simply a design concept or unfinished idea.

THIRD-PARTY SERVICES & BUYER CONFIGURATION

Topa is designed to operate with buyer-controlled infrastructure.

Depending on the functions the buyer wishes to use, the buyer may need their own:

• Supabase project/account
• AI-provider API credentials
• Netlify account/deployment token
• Cloudflare/tunnel configuration where applicable
• Local Runner-compatible machine
• Ollama installation and compatible local model for local AI use
• Other third-party service credentials where applicable

These are external services and are not being sold as part of Topa's underlying intellectual property.

Any ongoing third-party charges are normally the buyer's responsibility.

BUYER-SPECIFIC SETUP

Because different buyers may use different infrastructure, AI providers, deployment services and internal technical environments, final configuration is completed according to the buyer's intended deployment.

The buyer is therefore not forced to use the seller's personal API keys, hosting accounts or private credentials.

BRANDING / WHITE-LABEL USE

The buyer's licensed deployment may be configured for agreed internal branding / white-label presentation as part of the commercial setup, subject to the final licence terms.

This should not be interpreted as a transfer of the Topa master brand, global product ownership or exclusive underlying IP unless separately agreed in writing.

DOCUMENTATION & HANDOVER

The sale includes an agreed source-code and technical handover package.

Documentation/material covers areas such as:

• Source-code setup
• Environment configuration
• Development startup
• Testing
• Production build
• General platform operation
• Runner setup
• Local Topa AI/Ollama setup
• Troubleshooting
• Security precautions
• Buyer-specific environment configuration

Runner setup/start material and local-AI bridge material are included where applicable.

POST-SALE SUPPORT

Initial post-sale support will be provided for reasonable setup, handover and technical clarification as agreed with the buyer.

This does not represent unlimited lifetime maintenance, an indefinite support contract or a guaranteed SLA.

Any substantial future custom development, major integrations, ongoing maintenance or long-term support can be discussed separately if required.

WHO THIS PLATFORM MAY SUIT

Topa App Builder may be particularly relevant to:

• Software-development businesses
• Digital agencies
• AI development companies
• Internal development teams
• Technical entrepreneurs
• Businesses building their own applications
• Organisations wishing to reduce dependence on a single AI provider
• Teams requiring local/private AI options
• Buyers wanting an existing AI-development platform rather than starting from zero
• Businesses looking for an adaptable internal or white-label development environment

COMMERCIAL OPPORTUNITY

A buyer receives a substantial existing development platform that can potentially save significant time compared with independently designing and building all of the project's workflow, Runner, AI integration, project management, verification, deployment and delivery components from the beginning.

However, no guaranteed income, customer base, market share or future financial return is being represented.

The value of the licensed copy is based primarily on the existing software, source code, integrated functionality, technical work completed, buyer utility and the time/cost that may be saved by acquiring an established starting platform.

WHAT THE BUYER RECEIVES

Subject to the final agreement, the £25,000 asking price is for ONE non-exclusive commercial licensed copy and includes:

• Licensed Topa App Builder source-code package
• Deployable buyer copy
• Existing application/platform functionality
• Project/workspace functionality
• AI agent architecture
• Local Runner-related software/setup material
• Build/test/verification workflows
• Backup/restore functionality
• Deployment and delivery functionality
• Existing documentation
• Agreed buyer setup and handover
• Reasonable initial post-sale technical clarification
• Agreed branding/configuration assistance where applicable

WHAT IS NOT INCLUDED

Unless separately agreed, the sale does not include:

• Exclusive worldwide ownership of Topa App Builder
• Transfer of the seller's master platform
• Transfer of the seller's right to licence other buyers
• Seller's private passwords or personal credentials
• Seller's private API keys
• Free third-party AI-provider usage
• Free hosting or third-party subscriptions
• Unlimited lifetime support
• Guaranteed future development
• Guaranteed revenue or customers
• Exclusive market rights

FINAL LICENCE & SALE TERMS

ASKING PRICE: £25,000

This price is for ONE perpetual, non-exclusive commercial source-code licence / deployable copy of Topa App Builder.

The buyer receives their own licensed software copy, source code and agreed setup/handover.

The seller retains the original master platform, core intellectual property and the continuing right to develop, use and licence additional copies of Topa App Builder to other buyers.

This listing does NOT offer exclusive ownership of the whole Topa platform and does NOT transfer global intellectual-property ownership.

Any request for exclusive acquisition of the entire platform, master IP or restrictions on the seller's future licensing rights would constitute a materially different transaction and would require separate negotiation and pricing.

LIMITED LAUNCH OFFER: The first 3 perpetual, non-exclusive commercial source-code licences are available at £14,995 each. Regular licence price: £25,000. The buyer may use, modify, brand and deploy Topa App Builder commercially and may sell applications created using the platform. However, the Topa App Builder platform, source code or licence itself may not be resold, sublicensed, redistributed or transferred. Master copyright and intellectual property remain with the seller.