Abilities Plugin Marketplace
The official agent development toolkit for Claude Code. Curated plugins covering the full agent lifecycle - from scaffolding and onboarding to deployment, scheduling, and ongoing operations.
Build and Deploy Agents in Cursor
Apr 2026
Quick Start
New to Trinity? Install the trinity plugin and run /trinity:start-here— a guided, resumable journey from “what is Trinity?” to your first agent running on your own instance. It sequences everything below, so you don't have to pick a starting point:
/plugin marketplace add abilityai/abilities /plugin install trinity@abilityai /trinity:start-here
Prefer to drive yourself? From Claude Code chat:
# Add the abilities marketplace (one-time) /plugin marketplace add abilityai/abilities # List available plugins /plugin list abilityai # Install core plugins /plugin install create-agent@abilityai /plugin install agent-dev@abilityai /plugin install trinity@abilityai
Or from the terminal:
claude plugin add abilityai/abilities claude plugin install create-agent@abilityai
Set up in the Claude Code desktop app
Prefer clicking to typing? The Claude Code desktop app (macOS and Windows) has the same marketplace built into Settings — no terminal required. It resolves to the same abilityai/abilities marketplace as the CLI. Here is the whole flow, start to finish.
Open Settings
From your account menu at the bottom-left of the sidebar, choose Settings (or press ⌘,).

Open the Plugins tab
In the Settings sidebar, under Customize, select Plugins.

Add a marketplace
Click Add ▾ in the top-right of the Plugins panel and choose Add marketplace.

Add from a repository
In the Add marketplace dialog, pick Add from a repository — “Sync a plugin marketplace from a GitHub repository or git URL.”

Enter the repository
In the URL field, type abilityai/abilities. If the repository list doesn't load, click Use “abilityai/abilities” to continue.

Sync the marketplace
Click Sync. Only add marketplaces you trust — plugins run with your permissions and are not vetted by Anthropic.

Install the plugins
The Directory opens with the Ability.ai plugins — Create agent, Agent dev, Dev methodology, Trinity, and Utilities. Click the + on each one to install it. Its skills become available as / commands right away.

Available Plugins
| Plugin | Skills | Purpose | Key Skills |
|---|---|---|---|
| create-agent | 14 | Agent creation wizards | /create-agent:prospector, /create-agent:custom |
| agent-dev | 25 | Extend existing agents, and work fleet-wide | /agent-dev:create-playbook, /agent-dev:add-memory, /agent-dev:add-orchestrator, /agent-dev:add-canon, /agent-dev:agent-fleet-analysis |
| trinity | 7 | Deploy to and operate on Trinity | /trinity:start-here, /trinity:connect, /trinity:onboard, /trinity:sync, /trinity:loop |
| dev-methodology | 24 | Development workflow | /dev-methodology:implement, /dev-methodology:validate-pr |
| utilities | 7 | Ops and productivity | /utilities:safe-deploy, /utilities:docker-ops |
| add-project-management | — | Deprecated — moved into agent-dev; the stub installs nothing | /agent-dev:add-project-management |
The Agent Development Workflow
Abilities supports a four-step workflow:
1. Scaffold 2. Develop 3. Deploy 4. Iterate
/create-agent:* /agent-dev:create-playbook git push → /trinity:onboard git push → /trinity:sync
/agent-dev:add-memory (or onboard in place) /create-agent:review
/agent-dev:add-backlog /create-agent:adjust/create-agent:prospector or /create-agent:custom to get a fully configured agent/agent-dev:create-playbook to add capabilities, /agent-dev:add-memory for persistence/trinity:connect once to authenticate, push the agent's repo, then /trinity:onboard per agent - Trinity clones the repo and tracks the branch. An agent that is already deployed from a bare repo can be onboarded in place by running /trinity:onboard inside it/trinity:sync, which also reconciles declared schedules and plugins onto the instance. Use /create-agent:review and /create-agent:adjust to audit and improveWhat Wizard-Created Agents Include
Every agent created with the wizards includes:
onboarding.json + /onboarding skilldashboard.yaml + /update-dashboard skilltemplate.yaml (declaring credentials, schedules:, and plugins:), .env.example, .mcp.json.template