How to Share and Distribute Claude Skills via the Marketplace

To share and distribute Claude Skills via the Marketplace, package your skill directory containing a valid SKILL.md file into a zip archive and submit it to https://claude.ai/marketplace, using the skill-creator and skill-share automation tools from the ComposioHQ/awesome-claude-skills repository to handle scaffolding, validation, and team notifications.

Claude Skills are self-contained directories that encapsulate reusable capabilities for Anthropic's Claude AI assistant. The ComposioHQ/awesome-claude-skills repository provides two core utilities that automate the preparation and distribution workflow, ensuring your skills meet marketplace standards before publication.

Understanding Claude Skill Structure

A Claude Skill is fundamentally a directory containing specific metadata and asset files. According to the source code in skill-creator/SKILL.md, every skill requires a standardized layout including a SKILL.md metadata file, a scripts/ directory for executable code, a references/ folder for documentation, and an assets/ directory for static resources. This structure ensures that when you share and distribute Claude Skills via the marketplace, users receive a complete, functional package.

Core Distribution Utilities

The repository provides two specialized skills that form an end-to-end pipeline for marketplace distribution.

skill-creator

The skill-creator utility scaffolds new skills with the correct directory layout and enforces naming conventions. As defined in skill-creator/SKILL.md, this tool generates the /skill-<name>/ directory structure and populates the initial SKILL.md with required front-matter fields including name, description, and license.

skill-share

The skill-share utility handles validation, packaging, and team announcements. According to skill-share/SKILL.md, this tool performs three critical functions:

• Validation: Checks metadata compliance (lines 33-36) by verifying required fields in SKILL.md
• Packaging: Creates a distributable zip archive containing all skill files (lines 38-41)
• Notification: Posts announcements to Slack channels via Rube integration (lines 43-47), including direct links to the skill files

The Five-Step Distribution Pipeline

When you share and distribute Claude Skills via the marketplace, follow this automated workflow:

1. Initialize

Use skill-creator to generate a new skill directory with proper structure. Provide a unique name and description to populate the metadata template.

2. Validate

Before packaging, skill-share validates that your SKILL.md contains all required front-matter fields: name, description, and license. This validation logic ensures marketplace compliance before submission.

3. Package

The packaging logic compresses all files under your skill folder into a zip archive. According to lines 38-41 in skill-share/SKILL.md, this creates a distributable package that preserves the directory structure required for installation.

4. Publish

Upload the generated zip file to the Claude Skills Marketplace at https://claude.ai/marketplace. The marketplace accepts either the zip file directly or a public GitHub URL pointing to your skill directory.

5. Announce

Trigger the Slack integration to notify your team. As implemented in lines 43-47 of skill-share/SKILL.md, this sends a message containing the skill name, description, and GitHub directory link to your configured Rube channel (typically #claude-skills).

Marketplace Ingestion Requirements

The Claude Marketplace ingests skills directly from public GitHub repositories. To successfully share and distribute Claude Skills via the marketplace, your submission must meet three strict criteria:

• Public Accessibility: The GitHub repository must be publicly accessible
• Metadata Compliance: The skill folder must contain a well-formed SKILL.md with required front-matter (name, description, license)
• Archive Format: The skill must be packaged as a standard zip file containing the complete directory structure

When you submit a zip, the marketplace extracts it, validates the presence of SKILL.md, and registers the skill under the name specified in that file's front-matter. After successful registration, the skill appears in the public listings at https://claude.ai/marketplace, where other users can install it directly into their Claude environment.

Complete CLI Workflow

The following example demonstrates the complete workflow using the claude CLI, which acts as a thin wrapper around the skill-creator and skill-share Python scripts:

# 1. Create a new skill with proper scaffolding

claude skill create \
  --name my-awesome-skill \
  --description "Summarizes PDFs and extracts key insights"

# 2. Validate the generated skill metadata

claude skill validate my-awesome-skill

# 3. Package the skill into a distributable zip

cd my-awesome-skill
zip -r ../my-awesome-skill.zip .

# 4. Upload to the Claude Marketplace

# Navigate to https://claude.ai/marketplace → "Add new skill" → upload the zip

# 5. Announce to your team via Slack (requires Rube integration)

claude skill share \
  --skill-dir ../my-awesome-skill \
  --slack-channel "#claude-skills"

Key Source Files

The implementation details for sharing and distributing Claude Skills via the marketplace are contained in the following repository files:

• skill-share/SKILL.md: Defines validation, packaging, and Slack notification logic
• skill-creator/SKILL.md: Provides scaffolding templates for new skills
• README.md (Skills Marketplace section): Documents marketplace access and submission guidelines
• connect-apps-plugin/README.md: Configures the Rube-based Slack messaging integration that skill-share utilizes

Summary

• Claude Skills require a standardized directory structure with a SKILL.md metadata file containing name, description, and license fields
• The skill-creator utility generates compliant skill scaffolding automatically according to skill-creator/SKILL.md
• The skill-share utility validates metadata, creates zip packages (lines 38-41), and sends Slack notifications via Rube integration (lines 43-47)
• The Claude Marketplace ingests skills from public GitHub repositories as zip files, validating metadata before listing
• Submit your packaged skill to https://claude.ai/marketplace to make it available for community installation

Frequently Asked Questions

What file format does the Claude Marketplace require for skill submissions?

The marketplace requires a standard zip archive containing your complete skill directory. According to the skill-share implementation in skill-share/SKILL.md (lines 38-41), you must package all files including SKILL.md, scripts/, references/, and assets/ into a single zip file before uploading to https://claude.ai/marketplace.

Can I publish a Claude Skill from a private GitHub repository?

No. The Claude Marketplace requires your repository to be publicly accessible to ingest and validate the skill source code. Private repositories cannot be processed by the marketplace ingestion system, though you can still use the skill-share utility to package skills for internal distribution via Slack notifications.

How do I notify my team when I publish a new skill?

Use the skill-share utility with the --slack-channel flag to send automated notifications. As implemented in skill-share/SKILL.md (lines 43-47), this feature uses the Rube integration (configured in connect-apps-plugin/README.md) to post messages containing the skill name, description, and GitHub repository link to your specified Slack channel.

What fields are required in the SKILL.md metadata file?

The SKILL.md file must include three critical front-matter fields: name (the skill identifier), description (functionality summary), and license (distribution terms). The validation logic in skill-share/SKILL.md (lines 33-36) explicitly checks for these fields to ensure marketplace compliance before packaging.

{
  "mcpServers": {
    "instagit": {
      "command": "npx",
      "args": ["-y", "instagit@latest"]
    }
  }
}