Introducing the Crewly Marketplace: Share Skills, Models, and Roles

When we built Crewly, we designed the agent skill system to be modular. Every skill is a self-contained directory with a shell script, a description file, and a JSON manifest. This makes skills easy to create, easy to share, and easy to install.

The Crewly Marketplace takes that modularity and turns it into a community. Browse skills built by other teams, install them with one command, and extend what your agents can do — without writing a single line of code.

What's in the Marketplace

The marketplace has three categories of items:

Skills

Skills are the actions your agents can perform. Each skill is a bash script that calls an API, runs a tool, or executes a workflow. Crewly ships with 50+ built-in skills, and the marketplace adds community-contributed ones on top.

Examples available now:

• Code Review Pro — Advanced code review with security analysis, performance profiling, and best-practice enforcement across TypeScript, Python, Go, and Rust
• Nano Banana — AI image generation powered by Google Gemini, with standard and pro quality modes
• Send PDF to Slack — Convert markdown documents to styled PDFs and deliver them directly to your team's Slack channel
• Playwright Browser — Headless browser automation for web scraping, testing, and interaction via Playwright MCP
• Quality Gate Runner — Pre-completion quality checks that verify build, tests, and lint pass before an agent marks work as done

3D Models

Crewly's dashboard supports 3D avatar models for agent representations. The marketplace offers GLB models that you can assign to your agents for a more visual team experience.

Models come with metadata about polygon count, texture resolution, and available animations — so you know exactly what you're getting before you install.

Roles

Roles define how an agent behaves. Each role includes a system prompt, a list of assigned skills, and configuration for the agent's behavior profile. The marketplace lets you share and install role configurations.

Instead of writing a system prompt from scratch for your security auditor or data engineer, you can install a pre-built role that's been tested and refined by the community.

How to Install

Installing from the marketplace is one command:

crewly marketplace install <item-id>

For example:

# Install a skill
crewly marketplace install skill-code-review-pro

# Install a 3D model
crewly marketplace install model-german-shepherd

# Install a role
crewly marketplace install role-security-engineer

Installed skills appear in your agent's skill catalog immediately. No restart required.

How Skills Work Under the Hood

Every Crewly skill follows a simple structure:

skills/
└── my-skill/
    ├── skill.json       # Manifest: name, version, category, parameters
    ├── instructions.md  # How the agent should use this skill
    └── execute.sh       # The actual script that runs

When an agent needs to perform an action, it runs the skill's execute.sh with a JSON argument:

bash config/skills/agent/my-skill/execute.sh '{"param1": "value1"}'

The instructions.md file tells the agent when and how to use the skill. The skill.json manifest defines the skill's metadata, parameters, and which roles can use it.

This architecture means skills are:

• Portable — Just a directory with three files
• Testable — Run the shell script directly to verify it works
• Composable — Skills can call other skills or chain together
• Runtime-agnostic — Works with Claude Code, Gemini CLI, or Codex

Featured Skills Deep Dive

Nano Banana — AI Image Generation

The Nano Banana skill turns your agents into visual creators. Give it a text prompt, and it generates an image using Google's Gemini image generation API.

bash config/skills/agent/nano-banana/execute.sh '{
  "prompt": "A modern office dashboard showing AI agents collaborating"
}'

It supports two quality modes: standard (fast, uses Gemini Flash) and pro (higher quality, uses Gemini Pro). Perfect for generating concept art, placeholder images, or visual documentation.

Send PDF to Slack — Document Delivery

This skill handles a common workflow: take a markdown file, convert it to a professionally styled PDF, and send it to a Slack channel. It auto-installs its own Python dependencies on first run.

bash config/skills/agent/send-pdf-to-slack/execute.sh '{
  "markdownPath": "./report.md",
  "channelId": "C0123456789",
  "title": "Weekly Sprint Report"
}'

Your QA agent can generate a test report and deliver it to the team channel without any human involvement.

Playwright Browser — Headless Web Automation

Powered by Playwright's MCP server, this skill gives agents full browser control: navigate pages, fill forms, click elements, take screenshots, and monitor network requests — all headlessly.

# Install the Playwright MCP server
claude mcp add @anthropic/mcp-server-playwright

Once installed, agents can automate web interactions as part of their workflows: scraping documentation sites, testing deployed UIs, or interacting with web-based tools.

Contributing to the Marketplace

Want to share a skill you've built? The process is straightforward:

1. Structure your skill with the three required files (skill.json, instructions.md, execute.sh)
2. Test it locally by running the execute script with sample inputs
3. Submit a PR to the Crewly repository with your skill in the content/marketplace/skills/ directory
4. Include metadata in your item.json: description, tags, category, license, and version

We review submissions for quality, security, and usefulness. Accepted skills appear in the marketplace for all Crewly users.

What's Coming Next

We're working on several marketplace improvements:

• One-click install from the web UI — Install skills directly from the dashboard instead of the CLI
• Skill ratings and reviews — Help the community surface the best skills
• Skill bundles — Pre-configured sets of skills for common workflows (e.g., "Full-Stack Dev Kit", "QA Pipeline")
• Private marketplaces — Host your team's internal skills in a private registry

New to Crewly? Start with the 60-second quickstart, or read the full tutorial for a detailed walkthrough of creating a multi-agent team.

Browse the Marketplace

Visit crewly.stevesprompt.com/marketplace to explore available skills, models, and roles. Filter by category, search by keyword, or sort by popularity to find what you need.

The Crewly Marketplace is a community hub for sharing and installing agent skills, 3D avatar models, and role configurations. Skills are portable shell scripts that work across all supported runtimes — Claude Code, Gemini CLI, and Codex. Install any skill with crewly marketplace install <item-id> and it appears in your agent's skill catalog immediately.

Have a skill idea or want to contribute? Check out the Crewly GitHub repository to get started.