Identity
Citadel
One identity. A stronger foundation.
Space-based identity, OpenID Connect and branded sign-in for your applications.
OpenID ConnectShared identityAccess control
INDEPENDENT TOOLS. SHARED POSSIBILITIES.
Great software.
Even better
together.
We build thoughtful tools for people who build. Bring your team, infrastructure and AI agents together — in one Combine workspace.
CITADEL IDENTITY / RECA PAYMENTS / ONE MCP CONNECTION
YOUR COMBINE ECOSYSTEM
Citadel
Mesa
Hevsuit
combine
ONE WORKSPACE. YOUR STACK.
Cablebox
Reca
Fabrica
Ready for your agents
/mcp
Use one product or build your stack
Your identity, powered by Citadel
Every product still has its own home
01 / THE TOOLKIT
Good on their own.
Powerful in combination.
Six focused products. Pick what you need today, and make room for what comes next.
Infrastructure
Mesa
From your machine to production.
Bring servers, applications and deployments into one infrastructure control plane.
Server inventoryDeploymentsRun history
Knowledge
Hevsuit
Give your agents shared knowledge.
A versioned code knowledge library with semantic search, suggestions and reuse history.
Semantic searchCode knowledgeAgent context
Collaboration
Cablebox
Stay up to date with your team.
A shared home for project conversations, tasks and whiteboards. Less switching, more doing.
Project chatTasksWhiteboards
Payments
Reca
Payments with a clear paper trail.
Branded checkout, merchant connections, reconciliation and signed payment events.
Hosted checkoutPayment eventsReconciliation
Email
Fabrica Mail
The right message, delivered.
A transactional email relay with isolated application tokens and delivery-attempt history.
Transactional mailApp isolationDelivery history
02 / BETTER TOGETHER
A head start, bundled.
Start with a combination that makes sense. One request, one place to follow setup, and checkout through Reca when pricing is available.
BUILD & LAUNCH
The application stack
Identity, infrastructure, payments and email. The foundations of your next product, together.
citadelmesarecafabrica
Price on request
Let’s find the right setup for you
Build with this bundleCONTEXT & EXECUTION
The agent stack
Give your agents the knowledge to build and the tools to ship, through one connection.
mesahevsuit
Price on request
Let’s find the right setup for you
Build with this bundlePEOPLE & PROJECTS
The team stack
A place for your team to work, with a shared identity foundation and guided setup.
citadelcablebox
Price on request
Let’s find the right setup for you
Build with this bundleProducts are at different stages of billing and provisioning integration. Your bundle review shows what is available and what needs guided setup.
03 / BUILT FOR PEOPLE. OPEN TO AGENTS.
Your stack.
One conversation away.
Connect your MCP client to Combine. Discover your services, inspect available tools and work across supported products with the permissions you choose.
- One central endpoint for supported services
- Your credentials, your explicit tool permissions
- Direct access to every product, whenever you need it
COMBINE / MCPSTREAMABLE HTTP
https://combine.software/mcp
01 discover_products
Find the right tools for the job.
02 list_my_services → list_service_tools
Discover tools through your own connections.
03 call_service_tool
Act within your explicit per-service allowlist.
04 / THE PEOPLE BEHIND THE TOOLS
We are Combine.
A team of developers, designers and innovators building software that makes a difference. We combine technical craft with creative thinking — in our products and in the custom solutions we build with you.
Web & mobile applications/AI-powered solutions/Custom development
Let’s build your next chapter.
A product, a bundle, or something entirely your own.