tiun.

tiun. is an AI-native backend built for AI and SaaS companies, giving builders one system for authentication, payments, customer database, and analytics. According to the website, tiun gives AI and SaaS companies the backend they need to ship, scale, and grow their business in one unified platform, replacing a patchwork of single-purpose services with an ecosystem of services that are designed to work together from the start. The product is aimed at builders — developers and founders — who want to launch paid products quickly, and its public materials state that with one install command you can launch a paid product the same day you start building. The problem tiun addresses is the hidden complexity created by single-purpose tools. The website states that using separate services for auth, billing, customer data, and analytics creates multiple accounts, scattered data, and costs that compound as you scale. Builders are left maintaining business logic just to keep systems in sync, which makes the insights they need harder to reach. tiun describes itself as the backend powering the AI engineering era, and its stated approach is to remove that glue work: no webhook logic and no business logic to handle, because the services are designed to work together. This matters because every hour spent wiring up sync logic between disconnected tools is an hour not spent building the product itself, and because scattered data hides the very signals — who signs up, who pays, and how the product is used — that a company needs in order to price and grow. Authentication is the first of the core service groups. tiun provides sign up, login, and logout as simple and secure user authentication that is ready to use out of the box. It also ships User Button and User Profile components, which give users a dropdown menu to access their account so they can manage their profile and security settings without custom UI work. Multifactor authentication is supported through SMS passcodes, email, and social SSO. Together these pieces cover the account lifecycle that a paid product needs on day one, from creating an account to protecting it with a second factor or a social identity provider, and they remove the need for a builder to assemble and maintain that surface area themselves. Payments and billing form the second group, and tiun's stated promise is that you can start billing without writing payment code or wrangling webhooks. Users can create products and billing plans and accept one-time payments, subscriptions, and usage-based billing from day one. Checkout components are pre-built and ready to drop in as an overlay, so users never leave your page during the purchase flow. tiun also acts as your Merchant of Record: it processes your payments, pays out monthly, and includes tax compliance and chargebacks. The website compares transaction fees, showing tiun transaction fees of 2.9% + $0.30 and a total of roughly 3.4% + $0.30 in its example for international transactions. Because billing sits inside the same platform as the customer database, subscription state does not have to be reconciled across separate services. The customer database is the third group, and tiun states that every user, transaction, and session is stored in one place, with no syncing between tools. User management keeps each customer's subscription status up to date and stored with their user data, so builders do not have to build or maintain complex synchronization logic. Advanced event and session tracking records how users move through your product: every login, purchase, and product interaction is logged at the profile level. The platform also handles transactional emails for key user actions such as confirmations, password resets, and purchases, and it gives customers an invoice history where they can access, view, and download receipts and invoices from their user profile. Users can manage their own plans — upgrading, downgrading, or cancelling directly, with no support ticket required — and Data APIs provide one queryable API built on a consistent model, kept in sync and ready to plug into your stack. AI Analytics turns that shared data into something the whole team can act on. Because all data lives in one place, tiun says you can finally see the full picture: who is signing up, who is paying, how they use your product, where they get value, and how to price your product. The company frames this as one system that your entire team — business, engineering, product, and marketing — can work with, rather than a set of disconnected dashboards. For a SaaS or AI company this is significant because pricing, product, and go-to-market decisions all depend on the same underlying facts about customers, and having them in a single system reduces the friction of getting answers. Integration is handled through skills and the Model Context Protocol. The stated workflow is to install tiun's skills, connect the MCP, and let the AI agent do the hard work. The command shown on the site is npx skills add https://mcp.tiun.business, with deeper instructions in tiun's documentation. A customer testimonial on the site, from David Becker, founding member at Braintonic, describes trying the MCP integration and finding that it worked so well there was no backend, no webhooks, and no custom logic. Another, from Ferdinand Meyer, founder at moss, says he tried integrating tiun for a side project and it worked like a charm, calling it an absolute no brainer for future solo builders and founders. This agent-first installation is tiun's distinctive approach: rather than asking a developer to hand-wire several services together, it exposes the whole backend to an AI agent that performs the setup. The benefits follow from consolidation. Builders get a single system instead of multiple accounts and scattered data, and they avoid the compounding costs the site associates with maintaining several tools. The Product Hunt summary states the practical outcome plainly: one system for auth, payments, customer data, and analytics, one command to install, and the ability to launch a paid product the same day you start building. Because subscription status, events, sessions, and transactions live together, the insights needed to price and grow a product are reachable without extra integration work. The website also presents a case study: Res Publica increased their user base by 21% in the last 12 months by introducing usage-based billing with tiun, with Martin Stedler, CEO at Res Publica, Cicero, quoted alongside it. Concrete use cases described in the content include solo builders and founders starting a side project who need authentication and billing without building a backend, and new AI or SaaS products that need to launch a paid offering on the same day that development begins. Usage-based billing is a stated scenario: the Res Publica case study describes a company that grew its user base after introducing usage-based billing with tiun. Teams are another: business, engineering, product, and marketing functions are each named as groups that can work with the same unified system and the analytics it produces. Companies that want to accept one-time payments, subscriptions, or usage-based billing from day one, and that want tax compliance and chargebacks handled through a Merchant of Record arrangement, are also directly addressed by the payments offering. tiun is positioned for AI and SaaS companies and for builders generally — developers, founders, and operators who would otherwise assemble separate tools. The site notes that the company is supported by investors, founders, and operators. On integration, the platform connects through the Model Context Protocol and skills installed with a single command, and it is presented alongside a section labelled "INTEGRATE tiun with," although no specific third-party integrations are named in the content provided. Pricing information points to a dedicated pricing page and a "why tiun" comparison page; the visible fee example is 2.9% + $0.30 in transaction fees, with a total of roughly 3.4% + $0.30 for international transactions. Access starts with a "Try for free" action that leads to my.tiun.business, and documentation lives at docs.tiun.io. Taken together, tiun's value proposition is a single, AI-native backend that removes the seams between authentication, payments, customer data, and analytics. By installing skills and connecting MCP, builders let an agent wire up the backend, so there is no webhook logic and no business logic to maintain. The result, as the site puts it, is one system for auth, payments, customer database, and analytics — one that an entire team can work with, and that lets a builder launch a paid product the same day they start building.