Claude Skills Marketplaces: How to Pick and Publish One (No Code)

You search "claude skills marketplace" and get scale with no map. There are 2,500+ plugin marketplaces registered, roughly 40 products that support the portable SKILL.md standard, and at least six competing directories all claiming to be the place to find skills. Here's the one distinction that tells you which of them is worth your time, and how to publish your own skill so a business can install it in a single command.

Quick answer: A Claude skills marketplace is a place to find, install, or publish SKILL.md skills — reusable instruction folders an AI agent loads on demand. They come in three types: browse-only directories (you still copy-paste by hand), cross-agent installers (one click adds a skill across tools), and versioned package managers (install by name, get updates). Anthropic's official in-Claude-Code marketplace distributes plugins that only work in Claude Code, not portable skills.

What a Claude skills marketplace actually is

A Claude skills marketplace is a catalog of SKILL.md skills you can find, install, or publish. A skill is just a folder with a markdown file that tells Claude how to do one repeatable job — write a weekly report a certain way, process an intake form, format a compliance doc. The description line at the top is the trigger: Claude reads it and decides when to load the skill, so "use this skill when you need to summarize a support queue" is what makes it fire at the right moment.

The reason this matters now is that the format went portable. OpenAI adopted SKILL.md for ChatGPT and Codex in late 2025, and by mid-2026 roughly 40 products supported the standard on agentskills.io. A skill you write once can run across those tools. That's the whole promise, and it's also why the directory situation got noisy — every catalog wants to be the front door to the same underlying files. If you're new to what skills even are, our guide to Claude Agent Skills for non-developers sorts the business tasks worth turning into one.

The one distinction that sorts every directory

Every marketplace you'll find falls into one of three buckets, and knowing which you're on tells you exactly how much work is still on you. Independent guides from happyskills, digitalapplied, and agentman all land on the same three-way split, so this isn't one blog's opinion — it's how the ecosystem actually organizes.

For a non-developer, the practical rule is simple: a directory saves you searching, an installer saves you fiddling, and a package manager saves you maintenance. If a skill is something you'll run once, a directory is fine. If it's something a business will depend on weekly, you want an installer or package manager so updates don't rot.

Anthropic's official marketplace is not what you think

Anthropic runs an in-Claude-Code marketplace, and it's worth knowing it distributes plugins, not portable skills. Plugins are Claude-Code-only. They bundle commands, subagents, and hooks into Claude Code specifically — powerful inside that tool, but they don't travel to ChatGPT, Codex, or the other ~40 products that read SKILL.md.

So there are two parallel ecosystems and people conflate them constantly. If your goal is a skill that works everywhere the standard is supported, you want SKILL.md from a portable directory or installer. If you live entirely inside Claude Code and want deeper hooks into that one tool, the official plugin marketplace is the right shelf. The mistake is grabbing a Claude Code plugin, expecting it to run in ChatGPT, and concluding skills are broken. They're not — you picked the wrong format for your goal.

How to publish your own skill (no code)

Publishing a skill is writing one markdown file, packaging the folder, and pointing a marketplace at it. You do not need to be a developer, and you do not need a terminal for the writing part.

Write the SKILL.md

Create a folder named for your skill and put a SKILL.md file inside it. The file needs a name, a description, and the instructions. The description is the most important line you'll write, because it's the trigger.

---
name: weekly-revenue-report
description: Use this skill when the user asks for a weekly revenue report. Pulls figures from the shared sheet, formats a summary, and flags any week-over-week drop over 10%.
---

# Weekly Revenue Report

1. Read the "Revenue" tab from the linked spreadsheet.
2. Summarize total revenue, top three sources, and any refunds.
3. Compare to the prior week. If any line dropped more than 10%, flag it in bold.
4. Output as a short paragraph followed by a three-row table.

Write the instructions the way you'd brief a new hire: specific, ordered, with the edge cases named. Vague skills fire at the wrong time or produce mush.

Test it before you ship it

Load the skill into your own Claude setup and run it three or four times with real inputs before you publish. The same discipline we use on voice agents applies here — test against real cases first, not idealized ones. Check that the description actually triggers the skill when you expect and stays quiet when you don't.

Publish so a business can install in one command

To get the "install by name" experience, you publish to a package-manager-style marketplace rather than dropping the raw file in a directory. Once it's listed, a buyer installs it with a single command like install weekly-revenue-report instead of hunting down and pasting your file. That one-command path is what makes a skill sellable: distribution that forces a buyer to manually copy a file kills conversion, and if you just hand over the raw SKILL.md, your instructions — your actual IP — are sitting in their folder with nothing stopping them from resharing it.

This is where a lot of "sell your Claude skill" advice quietly falls apart. There's no native payment or access control in the plugin marketplace, so the honest models are licensing the skill for a flat fee, building it done-for-you, or pairing it with consulting. If you'd rather have a business's skill built and deployed for you instead of assembling the pipeline yourself, 6omb builds custom agents and ships them in under 30 days.

Common pitfalls when picking or publishing

Most of the pain here comes from three avoidable mistakes, and each maps to a decision you make before you install or publish anything.

There's a fourth one for sellers: handing over the raw file and hoping people pay. Treat the file like source code you're licensing, not a PDF you're emailing.

FAQ

Where can I find Claude skills?

You'll find Claude skills across six-plus competing directories, including SkillsMP, claudeskills.info, SkillHub, augmentclaude, and mcpmarket, plus Anthropic's official in-Claude-Code marketplace. Check whether each one is a browse-only directory, a cross-agent installer, or a versioned package manager before you rely on it, because that decides how much manual work is left for you.

Do I need to write code to publish a Claude skill?

No, you don't need to write code to publish a Claude skill. A skill is a folder with a plain-markdown SKILL.md file — a name, a trigger description, and step-by-step instructions written in normal language. The only technical moment is publishing to a marketplace, which is a single command.

What's the difference between a Claude plugin and a Claude skill?

A Claude plugin works only inside Claude Code and bundles commands, subagents, and hooks for that one tool. A Claude skill uses the portable SKILL.md standard and runs across the roughly 40 products that support it, including ChatGPT and Codex. Pick the plugin for deep Claude Code power, the skill for cross-tool portability.

Can I sell a Claude skill without leaking the file?

There's no native payment or access control in the plugin marketplace, so selling the raw file leaks your instructions the moment a buyer opens the folder. The honest models are licensing for a flat fee, building the skill done-for-you, or bundling it with consulting rather than shipping the file alone.

If you'd rather skip the hunt and start with skills that already work, the free Claude Community has 40-50+ copy-paste skills and templates you can install and adapt without writing a line of code.