Pasting a Claude or DeepSeek API key straight into your code "just to test it quick" leaves a trail in your git history and your logs. A no-nonsense guide to environment variables, rotation, and what to check before sharing a repo.
Sep 09 2026 · 7′ · Tutorials · nextjs · anthropic
Running the OWASP LLM Top 10 as a real audit is a completely different experience than reading it as a checklist. I ran it against my TypeScript agent stack with system prompts, MCP tools, and Cline — and the findings were uncomfortable.
Jun 20 2026 · 9′ · Tutorials · TypeScript · LLM
The most common mistake when implementing MCP tools is coupling them to the provider's SDK. The spec exists to prevent exactly that. A practical architecture guide: the input/output contract that makes a tool work across Claude, GPT, and local models without rewriting anything.
Jun 10 2026 · 8′ · Tutorials · TypeScript · LLM
Cline's official docs describe an autonomous coding agent for VS Code with an approval loop, auto-approve modes, and multi-provider support. Here's what those docs say — plus what two weeks of real use on a TypeScript project taught me that the docs don't.
Jun 07 2026 · 11′ · Tutorials · TypeScript · developer tools
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 hype says Kimi K2.6 beat Claude and GPT-5.5 at coding. I ran it against my own codebase — not cherry-picked HumanEval — and what I found changes the question you should actually be asking.
May 03 2026 · 11′ · Experiments · TypeScript · produccion
874 points on HN for 'I cancelled Claude'. Before joining the chorus, I ran my own regression cases against real Claude Code logs. The degradation is real — just not where everyone's complaining about it.
Apr 25 2026 · 8′ · Experiments · TypeScript · claude code
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
Architecture, real systems, product decisions and technical lessons. Everything reviewed with my own judgment before it ships.
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