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Independent software studio · Est. 2026

Field notes from a company of one.

Real systems, failures, and decisions from building software with AI agents. Written for people who want the useful parts, not the demo.

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Latest note10 published
5 min read

The Tiny File That Keeps Parallel AI Sessions from Colliding

Separate worktrees protect files. A small claims file protects the shared resources around them.

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Diagram separating file ownership from shared resource ownership in a session claim.

Field notes

Engineering, agents, operations, and the failures that made the systems better.

  1. A Green Test Is Not Evidence Until It Can Go RedA passing command can still miss the behavior users depend on. I started treating reachability and runner state as part of the test.5 min readTesting / Agents
  2. The Image Loader Was a State Machine, Not a FallbackA fallback list fixed bad formats. A small state machine fixed the races around hydration, cache purges, and reused image elements.5 min readWeb / React
  3. My Dashboard Used to Live on a Server. Now It Lives on My Mac.I had an internal dashboard pushing snapshots to a VPS so a browser could fetch them back. Then I noticed the data already lived on the machine doing the pushing. So I deleted the entire round trip.5 min readLocal First / Architecture
  4. The Model Got Good Enough to Run a Team of ItselfI posted two screenshots last week with barely a caption: 'so smart' and 'they definitely cooked.' This is the longer version of what I was running and why a company of one suddenly feels like it has a staff.4 min readClaude Code / Agents
  5. When Your Automation Breaks EverythingMy scheduled email triage bot deleted 35 Swift files from a client project. Here's what went wrong, how I fixed it, and what I rebuilt from scratch.5 min readAutomation / Claude Code
  6. How I Replaced a Team of 5 with Claude CodeI don't have a CTO, a project manager, a DevOps engineer, a finance person, or a marketing team. I have Claude Code and a set of custom skills that do what all of them would.5 min readClaude Code / Workflow
  7. The Memory System That Makes Claude Code Coherent Across SessionsThe biggest problem with AI assistants is amnesia. Every conversation starts from zero. Here's how I solved that with a persistent memory layer that gives Claude Code real continuity.4 min readMemory / Claude Code
  8. Automating Financial Management with a CFO AgentInvoicing, expense tracking, revenue reports, and tax prep are handled by an autonomous AI agent that runs on a schedule and reports back to me every morning.4 min readAgents / Finance
  9. Email Triage Automation: How I Never Miss a MessageClient emails, support requests, newsletters, and invoices get triaged, categorized, and either handled automatically or surfaced to me with full context.4 min readEmail / Automation

About the record

I run a software company alone. These are the parts worth sharing.

I'm Martino Vigiani, founder of SubraLabs. I publish the systems, mistakes, and practical evidence behind building software with AI agents.

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