One-prompt apps

Each entry below is a complete application, expressed as a single message to a Claude that has the Fine Structure connector. Copy any of them into the chat, or open the interactive gallery, where every prompt is offered in eighteen languages and opens Claude with the text already typed.

Business systems

A CRM with customers, jobs and invoices, published at a live link.
A booking system with services, time slots and an admin view.
An inventory tracker with low-stock alerts and a movement log.
A price-quote generator that produces shareable quote pages.
Invoicing with paid and overdue status and a what-I-am-owed dashboard.
An income and expense tracker showing monthly profit.
A sales pipeline board with value per stage and stalled-deal alerts.
A client portal where each client sees only their own projects and invoices.

Customer-facing sites

A landing page with a lead form that saves to a real database.
A portfolio site with a projects gallery and contact form.
A restaurant site with menu, hours and table reservations.
An event page with RSVP and a guest count.
A mini-course site with per-student progress tracking.
A local business directory with search and an approval queue.
A property listings site with filters and enquiries.
An online product catalog with categories and order enquiries.
A waitlist page with email capture and a signup counter.

Internal tools

A team task board with owners, due dates and an overdue view.
Timesheets with weekly totals per person and a billing export.
A support desk with a public ticket form and a triaged queue.
An employee directory with leave requests and an absence calendar.
The spreadsheet you keep maintaining, rebuilt as a real app.
A daily operations checklist with per-shift completion tracking.

AI agents

An agent that checks for new leads each morning and reports on WhatsApp.
A watchdog for runtime errors and traffic drops.
A Monday morning summary of last week across all your apps.
An agent with its own email address that drafts replies to inbound mail.

Improve what you already have

Pick my most promising app, improve one real thing and publish.
Audit for errors and broken pages, fix them, validate and republish.
Read this week traffic, say where people leave, and make one change.
Add user accounts and put chosen pages behind a login.
Connect my own domain and confirm when the certificate is live.

Connecting takes about two minutes

Open claude.ai and sign in. A free Claude account is enough; free accounts can add one custom connector.
Go to Settings, then Connectors, choose Browse connectors, and search for Fine Structure. Click Connect.
Sign in with a Fine Structure account (the free tier is enough, no credit card) and approve.
Back in the chat, ask for what you want built. The result is published at a public link.

In Claude Code: claude mcp add --transport http finestructure https://finestructure.ai/api/mcp, then run /mcp to authenticate. The full guide covers the desktop app and every other client.

Where this is listed

Fine Structure is a Community connector in Anthropic's connector directory (listed, not verified or endorsed), and the same server is recorded in the official MCP registry as ai.finestructure/fine-structure, on Smithery and on Glama. The endpoint answers publicly at /api/mcp/manifest, so any claim on this page can be checked against the live tool list.