Ben Congdon splits software into interpolative (agents nail it from a few sentences) and novel (fighting uphill). Building Calendrz showed me exactly where that line runs, and why the bits you have to explain are the ones worth building.
Posts Tagged: calendar
Of AI Agents, Code Mode and the One Tool to Rule Them All
Agents are collapsing their tool catalogues into a single exec tool and writing code against your APIs. Having built an MCP server with 30+ tools for Calendrz, I think that makes your tool design more important, not less, and privacy has to live in the tools.
Daylight Saving Time: Store the Zone, Not the Offset
Europe and the US changed their clocks a week apart, and calendars everywhere got confused. Why storing a time zone id beats storing an offset, what it means for distributed teams, and why it matters even more now that agents book meetings.
Of Legacy Code and Unlimited AI Tokens
Cisco has given one engineer unlimited AI tokens to rewrite 98% of its legacy code. I did a (much smaller) version of that on the Calendrz codebase this year, and the tokens were the easy part: the tests and the deleting came first.
AI agents are joining your meetings. Do they know when you’re actually free?
Agents are moving into meetings and calendars. Here’s what six months of running an MCP server and a scheduling agent taught me about letting AI book your time.
The return-to-office fight is really a calendar problem
Three-day mandates, four-day weeks, deferred rollouts: whichever policy wins, it plays out in a calendar that rarely tells the truth about when you’re free.
The AI-Native Product: What Happens When You Design for AI Consumers First
There’s a category of product emerging that I think deserves its own label: the AI-native product. Not “AI-enhanced” — a product that bolts on a chatbot or sprinkles some ML recommendations on top. Not “AI-powered” — a product whose core engine is a model. I mean something different: a product that was designed from the […]
Building a Privacy-First Product with AI as Your Engineering Partner
There’s a tension at the heart of building products with AI that nobody talks about enough: AI is fundamentally about sharing and connecting data, but some of the best products are built on the principle of not sharing data. Calendrz, the calendar mirroring tool I’ve been building, is one of those products. Its core promise […]
How AI Wrote Seven Blog Posts for My Product in Forty Minutes
Last week I sat down to write a content marketing plan for Calendrz. Seven blog posts, each targeting a different audience segment, each with a matching LinkedIn teaser. The kind of work that would normally take me a solid two or three days of writing, editing, second-guessing, and procrastinating. It took about forty minutes. And […]
How I Revived a 3-Year Side Project in One Week Using AI Agents
I spent 3 years building Calendrz as a side project. Then I orchestrated AI coding agents for one week and shipped more than the entire 3 years combined — a Chrome Extension, MCP server, Stripe billing, custom CRM, infrastructure agents, and a full marketing refresh. Here’s what happened and why the combination of engineering knowledge, product sense, and agent orchestration is the new superpower.
