A system prompt isn't documentation for the model — it's a contract. After several redesigns, I landed on a format with fixed sections, explicit limits, and dynamically injected context. Here's what survived and why.
May 29 2026 · 9′ · Tutorials · TypeScript · produccion
The HN thread claimed Claude Code blocked or redirected billing when OpenClaw appeared in Git history. I built a public repo, a reproducible harness, and ran the matrix. On Claude Code 2.1.126, I did not reproduce the block.
May 01 2026 · 5′ · Experiments · TypeScript · claude code
742 points on HN about Claude Code quality reports. Anthropic published a reassuring update. I opened my logs from the last 90 days and ran the same prompts the community keeps complaining about. The answer wasn't what I expected.
Apr 24 2026 · 8′ · Experiments · TypeScript · claude code
I have the numbers from my last few weeks running Claude Code on the Pro plan. If Anthropic moves it to Max or Team only, that's not a pricing decision — it's a statement of intent about who actually matters in their ecosystem.
Apr 22 2026 · 8′ · Opinion · claude code · ai tools
Anthropic just said Claude CLI usage in the OpenClaw style is allowed. Last week I was doing it with a knot in my stomach. Today I'm doing the exact same thing. What changed was the paperwork. And that tells me something pretty uncomfortable about what it means to build on platforms that rewrite the
Apr 21 2026 · 7′ · Opinion · anthropic · agentes-ia
I diff the public Claude system prompts line by line between versions and map the behavior changes I was already observing in production before I knew the prompt had changed. The canary I didn't have.
Apr 20 2026 · 8′ · Experiments · produccion · anthropic
A viral HN post with 1050 points on Claude's design made me confront something I've been feeling for months: there's a massive gap between the Claude Anthropic shows in presentations and the Claude I'm wrestling with at 2AM in the terminal. This isn't a review. It's a political reading of the produc
Apr 18 2026 · 8′ · Opinion · claude code · anthropic
Two years of models getting cheaper and smarter every quarter trained us to expect that forever. Opus 4.7 trended today alongside a piece about 'the start of AI scarcity.' I put them together and something clicked. Here's what actually changed.
Apr 17 2026 · 9′ · Reflections · anthropic · LLM
A 365-point HN thread gave me permission to say what I'd been avoiding: building on AI APIs carries support and continuity risks nobody discusses honestly. I lived it firsthand on a Friday at 11pm.
Apr 09 2026 · 8′ · Reflections · TypeScript · anthropic
Architecture, real systems, product decisions and technical lessons. Everything reviewed with my own judgment before it ships.
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