Hire an AI subscription app starter builder

Everything it can hand back

Your task sets the actual outputs. The specialist picks the methods that cover them.

• A project with sign-in, a database, pages and a dashboard
• Subscriptions with trials, checkout, a customer portal and safe payment webhooks
• Email templates and a sending setup with a local preview
• Logs and alerts on the payment and email paths
• Tests with a coverage report and a list of what is still untested

How it does the job well

• Reconcile to source documents, such as bank statements, ledgers and invoices, before reporting.
• Show the calculation, inputs and period for every figure.
• Label actuals, estimates and forecasts clearly.
• Send tax, legal and regulatory questions to a qualified professional.

Mistakes it avoids

• Mixing cash and accrual figures, or different periods, in one comparison.
• Rounding or formula errors that do not tie back to totals.
• Giving personal investment advice.

What a good result looks like

An example, not your task: You are starting a subscription web app and want the base done properly.

• Step 1: Project. The file layout, sign-in, database, pages, dashboard and an example settings file.
• Step 2: Billing. Plans, trials, checkout, customer portal, payment webhook handlers and steps to test them on your computer.
• Step 3: Emails. Email templates, a sending function, a local preview and a spam check.
• Step 4: Logs and alerts. The questions you will ask when something breaks, the logs that answer them and alerts for what needs action.
• Step 5: Tests. The tests written, their results, a coverage report and a list of what is still untested.
• Hand-back summary. Each step's file, any step not run and why, and every MISSING line in one list.

How the work is checked

• Each step passed its own checks, or the run stopped at the step that failed and says why.
• The steps ran in order, and each one used the result of the one before.
• Nothing was invented to fill a gap. Every gap is a MISSING: line.
• Nothing was sent, published or paid for without a clear yes.
• States which checks passed, failed or could not run, and names missing inputs.

These checks have not been run against a model yet. Your AI uses them to check its own work.

Capabilities

• Scaffold the app. Lays out pages, API routes, the database and sign-in from your choices, with an example settings file.
• Add subscriptions and webhooks. Adds plans, trials, checkout and the customer portal. Webhooks check signatures and ignore repeats. Sets up local testing.
• Add the emails the app sends. Builds the templates and a sending function, with a local preview and spam and dark mode checks.
• Add logs and alerts. Writes the questions you will ask when something breaks, adds a log or metric for each and alerts for what needs action.
• Write the tests. Lists what can be tested, riskiest first, writes the tests, runs them and reports what is still missing.

How the role works

1. Checks your task, context and available tools.
2. Picks the methods needed and prepares a work plan.
3. Carries out supported tasks, with each method's limits and review gates.
4. Checks the real deliverables and corrects supported faults.
5. Hands back files, evidence and unresolved gaps.

Your specialist's working setup

Download the base specialist without a task form or account. README.md and SETUP.md explain how to use the folder. SOUL.md defines its scope. INTAKE.md asks missing questions inside your AI. PLAYBOOK.md, SKILLS.md, BEST_PRACTICES.md, CHECKS.md and HANDOFF.md guide the work and its checked deliverables.

Complete associated skills, supporting files and licences are included. Choose only the methods needed for the actual task. Keep context, working files and accepted feedback in your AI project.

Use this specialist through MCP or the API

Call prepare_specialist with role_id build-a-paid-app-with-billing-emails-alerts-and-tests only. No task is required to load it. Your AI asks what job you need done, what you want back and which relevant context it can use.

For task-led hiring, call find_specialist, explain the suggested specialists and let the user accept or change the team.

Complete ZIP: Download base specialist. API: GET /api/v1/specialists/build-a-paid-app-with-billing-emails-alerts-and-tests/pack. The host AI supplies its own model, tools and execution; a pack does not connect accounts or run a task.

Inputs and helpful context

The specialist starts from the task brief. Only active methods require their inputs.

For the primary method, when used

• Your app idea in a few sentences, with the features you need
• Your choices for sign-in, database and payments, or say you have none
• Your plans and prices
• The emails your app should send (optional)

Functions and deliverables

• Subscription app starter builder: Build an app starter with sign-in, subscriptions, service emails and alerts, then test the payment and email paths.
  • A project with sign-in, a database, pages and a dashboard
  • Subscriptions with trials, checkout, a customer portal and safe payment webhooks
  • Email templates and a sending setup with a local preview
  • Logs and alerts on the payment and email paths
  • Tests with a coverage report and a list of what is still untested
• SaaS starter builder: Build a SaaS starter app in Next.js. Describe your product and get sign-in, database, Stripe billing, API routes and a dashboard.
  • A full Next.js project with its file tree
  • Sign-in, checkout, billing portal and Stripe webhook routes
  • Dashboard, settings, billing and marketing pages
  • Database tables and helper files
  • An .env.example file listing every key you need
  • A checklist that tells you how to test each stage
  Source: Alireza Rezvani.
• Stripe payments builder: Describe your billing rules. Get Stripe code drafts for checkout, subscriptions, webhooks and local test steps.
  • Checkout and subscription code
  • A webhook route with a signature check
  • Upgrade and downgrade code with a price preview
  • Customer portal code
  • An eight-step test run using the Stripe CLI
  Source: Alireza Rezvani.
• Transactional email builder: Say which emails your app sends. Get coded templates, a sending setup, preview and dark mode.
  • Coded email templates
  • A provider-agnostic send setup
  • A local preview server
  • A spam and dark mode checklist
  Source: Alireza Rezvani.
• Logging and alerts code writer: Describe what production behavior matters. Get structured logs, metrics and alert changes, plus checks to verify they reveal the right failures.
  • Structured log statements
  • Metrics for key behaviour
  • Trace points
  • Alert rules with thresholds
  • A short runbook for each alert
  Source: Addy Osmani.
• Test suite writer: Write tests for your code and check what they miss. Give it a module and get unit, integration and end-to-end tests plus a coverage report.
  • Unit, integration and end-to-end tests
  • Test run results
  • A coverage report
  • Suggestions for remaining gaps
  Source: Burhan Sebin.
• me.md builder: Answer a few questions, or let your AI use what it remembers. Get one private file that tells any AI who you are.
  • One me.md file with up to ten dated sections
  • A list of facts taken from memory, for you to check
  • A short note of what it removed for privacy
  • The two next steps, to save it and set it up

Tasks you can use it for

• You are starting a subscription web app and want the base done properly.
• Your first version needs real payments, not a mock checkout.
• You want monitoring and tests from day one.

Limits to check before starting

• You only need a landing page or a one-time payment link: use a simple page builder or your payment provider's own payment link tool.
• You already have a live app and only need to fix failing tests: use the Failed test repairer.
• You want to take real payments right away: first get a developer to review the code, and use test keys until then.

Best way to use this role

Give it one clear outcome, the actual files and a definition of done. Keep the work in one AI project so it can reuse checked context and earlier files.

• Download the handoff pack. It's a zip with HANDOFF.md and every skill file this workflow uses.
• Open an empty folder in Claude Code, give it the pack and say "Follow HANDOFF.md".
• Describe the app. Use payment test keys only, never live keys.
• After each step, run the app and check that step before you continue.
• Read the final test report. Fix the gaps it lists before you take real payments.

Read it as data

Read the complete role setup as JSON. Connect your AI to the AI Blocks MCP library and read aiblocks://roles/build-a-paid-app-with-billing-emails-alerts-and-tests for its role instructions and pinned sources.

This is a prepared AI role. No task has run. Your AI carries out authorized work using its available tools and reports the actual deliverables and checks.