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How to automate visual diffs for PRs with Claude Code, Playwright, and GitHub Actions

Here's how you can automate visual diffs for every PR using Claude Code, the Playwright MCP, and GitHub Actions. This workflow will help you get before/after screenshots posted as PR comments.

Claude Code tokens: what they are and how they're counted

Claude Code tracks its usage in tokens. These are how LLMs break down, process, and generate text. Here's how Claude tokenizes text, and what your token usage count means.

Choosing a Container Registry in 2026: Docker Hub vs ECR vs Harbor (and others)

Most container registries are functionally similar: they use a repository format to store, protect, scan, and deploy container images. We looked at what distinguishes some of the major offerings, and how to weigh them against each other.

The Docker Ecosystem Explained

The Docker ecosystem has tooling to support nearly every component of container-based development. Here's a brief glossary of Docker's services and how they support cloud-native workflows.

Claude Opus 4.6 for software engineering

Anthropic's latest SOTA model, Opus 4.6, raises the bar again for LLM-written code. Here's how it changes the day-to-day for engineering teams.

Empower coding agents to self-validate with ephemeral environments

Coding agents are much more productive when they can check their work. Here's how you can get them iterating continuously on their own so they produce better, higher-quality code.

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Claude Code CLI cheatsheet with commands, configuration, and best practices

Claude Code CLI Cheatsheet: config, commands, prompts, + best practices

Get leet @ Anthropic's Claude Code with this cheatsheet, including config, CLI commands, advanced features, and best practices for faster dev + test.

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