DEV Community: Victor Del Puerto

Anatomy of a four-minute boot

Victor Del Puerto — Wed, 10 Jun 2026 12:00:00 +0000

Where my Claude Code sessions actually spent their first four minutes, and what cut it to thirty seconds without losing any context. Hooks were three seconds of the problem. The model's diligence was the rest.

How do you know a correction held? Instrumenting an agent in production

Victor Del Puerto — Tue, 09 Jun 2026 12:00:00 +0000

Functional scars make a correction persist. They don't tell you whether the system as a whole is getting better. So I instrumented every session — deterministic, zero-token, never blocking — and let a monthly pass turn the evidence into mechanism changes. The first thing the data caught was me.

The same scar, two agents

Victor Del Puerto — Wed, 03 Jun 2026 13:30:00 +0000

fscars 0.4.0 promotes the Codex adapter from instructions to native hooks. A correction you write once now fires deterministically in both Claude Code and Codex — and the scar itself does not change. Here is how each side works, and the one honest limitation.

Calibrate against your own voice

Victor Del Puerto — Tue, 02 Jun 2026 17:00:00 +0000

AI detectors flag non-native English as machine-written. callus scores your draft against your own voice instead. pip install callus.

A month of functional scars: 934 fires, one broken validation loop, and what it cost

Victor Del Puerto — Tue, 26 May 2026 20:00:00 +0000

I wired ten functional scars into my own workspace and let them run for a month. Half the signal came from one hook with documented false positives, and 3,838 captured opportunities sat unread. Here are the numbers and what they forced me to build.

The Pixar precedent: vibe coding has been here before

Victor Del Puerto — Mon, 18 May 2026 12:00:00 +0000

Debates over disruptive tools follow a pattern. The vibe coding fight is at a recognisable stage of it. Notes from someone who passed through an earlier version of the same argument.

Functional Scars — turning corrections into a primitive

Victor Del Puerto — Sat, 09 May 2026 12:00:00 +0000

fscars 0.1.0 is out — a bolt-on correction primitive for AI coding agents, built on the framework from the Lucy Syndrome paper. Apache 2.0, pip install fscars.

From memory to scar: a four-layer progression

Victor Del Puerto — Wed, 06 May 2026 14:00:00 +0000

Anthropic shipped managed memory stores in April. They sit at the third of four layers. The fourth, hooks, is the one that closes the Lucy loop.

The Lucy Syndrome: Why LLMs Forget Corrections

Victor Del Puerto — Fri, 10 Apr 2026 14:00:00 +0000

LLMs don't remember yesterday. That gap has a name, a causal mechanism, and a fix that doesn't require better memory.

The Lucy Syndrome and AI

Victor Del Puerto — Thu, 09 Apr 2026 19:00:00 +0000

LLMs don't remember yesterday — and that gap has a name. A five-part essay on the Lucy Syndrome, functional scars, and what it takes for a production system to actually learn.

Questions and answers

Victor Del Puerto — Thu, 09 Apr 2026 18:00:00 +0000

Questions about the Lucy Syndrome essay — its scope, its method, and what functional scars actually look like in operation. Compiled from real conversations and updated as new questions arrive.

Where this came from

Victor Del Puerto — Thu, 09 Apr 2026 17:00:00 +0000

The informal companion to the Lucy Syndrome essay — how the observation started, how the system around it took shape, and why an operator in Paraguay ended up writing about model amnesia.