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Blog

The AI tooling ecosystem, explained with real numbers.

Explainers

2026-07-23 · 7 min read

What is agentic AI? A plain-language definition with examples

Agentic AI means systems that pursue goals through multiple steps — planning, using tools, checking results — instead of answering one prompt. Definition, examples, and how agents differ from chatbots.

Guides

2026-07-23 · 5 min read

Claude skills marketplace: how to browse, vet and install skills

There's no single official Claude skills store — skills live on GitHub and surface through directories. Here is how the ecosystem fits together and how to pick skills worth installing.

Guides

2026-07-23 · 5 min read

Claude skills for Obsidian: turn your vault into an AI workspace

The skills that let Claude read, write and organize your Obsidian vault — daily notes, linking, summarization — and how to set them up safely.

Rankings

2026-07-23 · 5 min read

The best Claude skills for designers and design engineers

Design-taste skills are the breakout category of the skills ecosystem. The ones worth installing for UI work, design systems, and frontend polish.

Explainers

2026-07-23 · 4 min read

The "get shit done" Claude skill: what it does and why it spread

One of the most-searched skills in the ecosystem — a planning-and-execution skill that turns vague asks into shipped work. What it actually does, and alternatives.

Rankings

2026-07-23 · 7 min read

Best frameworks for building AI agents in 2026

Multi-agent orchestration, tool calling, memory, tracing — the open-source agent frameworks with real momentum, and how to choose between them.

Guides

2026-07-22 · 8 min read

What are Claude skills? The complete guide

Claude skills are markdown instruction packages that extend Claude Code with new capabilities. What they are, how they work, how to install them, and where to find the good ones.

Guides

2026-07-22 · 6 min read

How to activate Claude Code skills (and fix ones that won't trigger)

Installed a skill but Claude ignores it? Here is exactly how skill activation works, the three ways to invoke one, and the checklist for skills that refuse to trigger.

Guides

2026-07-22 · 7 min read

How to build a Claude skill: SKILL.md from scratch

A skill is one markdown file with frontmatter. Here is the full anatomy, a working example, the description-writing rule that decides whether your skill triggers, and how to publish it.

Rankings

2026-07-22 · 6 min read

The best Claude skills on GitHub, by real install counts

The Claude skills actually worth installing — ranked by live install numbers, not opinions. Picks for coding, writing, research and daily driving.

Guides

2026-07-22 · 8 min read

How to build an AI agent in 2026: the practical stack

Model, loop, tools, memory — the four pieces every agent needs, the build-vs-assemble decision, and the open-source frameworks with real momentum.

Rankings

2026-07-21 · 7 min read

The best MCP servers, ranked by real install numbers

Forget star counts and listicles. These are the MCP servers developers actually install every month, according to npm and PyPI download data.

Explainers

2026-07-18 · 5 min read

What are agent skills, and why is everyone installing them?

Skills are reusable instruction sets that teach an AI agent a specific task. Here is how the ecosystem works and how to pick skills worth installing.

Guides

2026-07-16 · 6 min read

How to install and use skills in Claude Code

A practical guide to adding skills to Claude Code: the install command, where files land, how invocation works, and the skills worth installing first.

Rankings

2026-07-14 · 8 min read

Cursor, Claude Code, or Codex: picking a coding agent in 2026

The coding-agent field has consolidated into a few serious options. Here is how they differ, what the install data shows, and how to choose.

Explainers

2026-07-12 · 6 min read

MCP servers, explained in five minutes

The Model Context Protocol gives agents hands: browsers, databases, GitHub, email. Here is what an MCP server actually does and which ones matter.

Guides

2026-07-10 · 7 min read

Building your first MCP server: what to know before you start

The MCP spec is simple at its core: tools, resources, prompts. Here is the architecture in plain terms and the decisions that matter before you write code.

Inside aaaa.fyi

2026-07-05 · 4 min read

How aaaa.fyi ranks listings: real numbers only

No editorial scores, no invented ratings. Every ranking on this site comes from live install counts, GitHub activity and registry statistics.

Explainers

2026-07-02 · 5 min read

Agent workflows: when one prompt isn't enough

Workflows chain agents, skills and tools into repeatable processes. Here is when to reach for one, and the patterns that keep showing up.