---
title: "Agent builder essentials · @harlan-zw · skilld"
canonical_url: "https://skilld.dev/@harlan-zw/agent-building-stack"
last_updated: "2026-08-20T06:40:37.919Z"
meta:
  description: "Find and install an existing skill, create and validate one when needed, or connect a new tool through MCP."
  "og:description": "Agent skills written by real maintainers in their own GitHub repos, with links to source"
  "og:title": skilld
---

`

[Curated by@harlan-zw](https://skilld.dev/@harlan-zw)Featured collection

# **Agent builder essentials**

Find and install an existing skill, create and validate one when needed, or connect a new tool through MCP.

<dl>

<dt>Skills</dt>
<dd>6</dd>

<dt>Repositories</dt>
<dd>5</dd>

<dt>Updated</dt>
<dd>2 months ago</dd>

</dl>

## **Included skills **

6 total

1. 01 [find-skills](https://skilld.dev/gh/vercel-labs/skills)

   /find-skills · vercel-labs/skills

   Search the wider skill ecosystem before building a capability from scratch.
2. 02 [skill-installer](https://skilld.dev/gh/openai/skills/skill-installer)

   /skill-installer · openai/skills

   Install a curated skill or pull one directly from a public or private GitHub repository.
3. 03 [skill-creator](https://skilld.dev/gh/anthropics/skills/skill-creator)

   /skill-creator · anthropics/skills

   Author a concise SKILL.md that agents can discover, load, and apply reliably.
4. 04 [writing-skills](https://skilld.dev/gh/obra/superpowers/writing-skills)

   /writing-skills · obra/superpowers

   Test skill behavior against pressure scenarios, then refine its triggers and instructions.
5. 05 [validate-skills](https://skilld.dev/gh/callstackincubator/agent-skills/validate-skills)

   /validate-skills · callstackincubator/agent-skills

   Check skill structure, metadata, loading paths, and authoring practices before publishing.
6. 06 [mcp-builder](https://skilld.dev/gh/anthropics/skills/mcp-builder)

   /mcp-builder · anthropics/skills

   Design and wire up a Model Context Protocol server for a new tool.