76 Strings: Vertical SaaS for Racket Stringing Businesses76 Strings: Vertical SaaS for Racket Stringing Businesses
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Martin Garcia Krebs
• 2d
76 Strings is a vertical SaaS platform I designed and built for professional racket stringers and their customers.
The idea came from long conversations with a stringer friend around the courts of a tennis academy, talking through how stringing businesses actually work, where manual processes create friction and which problems were worth solving properly with software.
I deliberately chose 76 Strings as one of the first substantial products to develop alongside the modern Webmentat Framework.
It was a particularly useful product for that stage because it combines many real SaaS challenges inside one focused domain: multitenancy, customer workflows, subscriptions, payments, connected business accounts, logistics, locations, equipment data, QR-linked physical items, dashboards, multilingual support and AI-assisted capabilities.
The product helps stringers manage their customers, racket servicing, equipment history, pickup and delivery, payments and the connection between physical rackets and their digital records.
Developing 76 Strings and the Framework together created an important feedback loop.
Real product requirements exposed architectural needs. I solved them first in context, then evaluated which parts were genuinely reusable and belonged back in the Framework.
That allowed the product to remain highly specialized while strengthening reusable systems underneath it.
For me, 76 Strings is both a standalone vertical SaaS product and a practical proving ground for the broader Webmentat approach: use a mature reusable foundation, then spend the new engineering effort on the workflows and business model that actually make the product different.
Business Workflow AutomationSoftware ArchitectureSoftware DevelopmentNode.jsOpenAIReact
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