AI Tools: Anthropic’s Engineers Stopped Building AI Agents. Here’s What They Build Instead.

Watch on YouTube: https://www.youtube.com/watch?v=VxGIopUQVKo

Channel: Sharbel A.

Introduction

The video from Sharbel A. explains why Anthropic’s engineers shifted from building a separate AI agent for every task to creating reusable “skills.” A skill is a lightweight, self‑contained unit that can be installed once and used repeatedly, much like an app on a smartphone. This approach reduces the overhead of maintaining many half‑trained agents and lets a single agent gain many capabilities through a library of skills.

What the video covers

The presentation walks through the concept of a skill, shows how to create one using three different methods, and explains how to share or discover existing skills in community marketplaces. It also highlights the mechanics of progressive disclosure, the structure of the skill.md file, and practical safety tips for installing third‑party skills.

Step‑by‑step walkthrough of creating a skill

• Define the task – Identify a repetitive job you want your AI agent to perform (e.g., searching a niche on VidIQ, formatting a report, or launching a specific workflow).
• Create the skill folder – Make a new directory on your local machine; inside it place a file named skill.md.
• Write the skill metadata – At the top of skill.md add a name and a description. The description tells the agent when the skill should be activated (think of it as a trigger phrase or condition).
• Add step‑by‑step instructions – Below the metadata, list the exact actions the agent must take to complete the task. Use clear, imperative language so the agent can follow each step without ambiguity.
• Save and test – Save the file, then point your agent at the folder. The agent will first read only the name and description; if those match the current context, it will load the full skill and execute the instructions.
• Refine – Run the skill a few times, observe any mismatches, and adjust the description or instructions until the agent reliably triggers and completes the task.

Three creation methods demonstrated

• Manual authoring – You write the skill.md file yourself, following the structure above.
• Claude‑guided generation – In the Claude UI, use the “create with Claude” option: describe the job in natural language, let Claude draft a skill, then edit the generated skill.md for accuracy.
• Screen recording – Record yourself performing the task, upload the recording to Claude, and ask it to learn the steps. Claude will produce a skill that mirrors the recorded workflow.

Tools and numbers mentioned

• Claude – the underlying AI model used to create and run skills.
• VidIQ – example tool referenced in a prompt (“YouTube pockets”).
• Hermes, Codex, Cursor, Permees – additional tools cited as examples of what skills might interact with.
• Cloud (marketplace), Skills MP, Lobe Hub, GitHub – platforms where existing skills can be found or shared.
• Find Skills skill – a helper skill for discovering other skills.
• Agent Hermes’ Mission Control – an example of a skill that orchestrates multiple actions.
• skill.md – the core file that defines a skill.
• Plus sign (UI element) – the button used to add a new skill in the Claude interface.

Caveats and hype check

The video frames the skill concept as a productivity improvement, not as a revenue‑generating scheme. It avoids making explicit earnings promises, affiliate promotions, or unverified claims. The tone remains educational and tool‑focused. A practical warning is included: always read the entire skill description and scan it for potentially malicious content before installing any third‑party skill.

Concrete next actions

• Identify a repetitive task you currently perform with your AI agent and draft a skill.md file for it (include name, description, and step‑by‑step instructions).
• Try creating a skill manually using the Claude UI to become familiar with the folder and file structure.
• Use Claude’s “create with Claude” feature: describe the job, let Claude generate a draft skill, then refine the skill.md file.
• Record a screen walkthrough of a task, have Claude learn from the recording, and export the resulting skill for reuse.
• Search the Claude skills explorer, GitHub, Skills MP, or Lobe Hub for existing skills that match your needs, then import them into your agent.
• Before installing any third‑party skill, review its description and instructions for signs of unwanted or harmful behavior.
• Share your own skill by exporting the folder containing skill.md and distributing the file or a download link to teammates or the community.