Agent-scoped installs
Each listing installs as a remote MCP with a defined set of skills and a secret field for the host agent, so the integration stays attached to the agent that owns the task.
Agent Plugin Marketplace
Install vendor plugins with Cosmic’s Agent Plugin Marketplace. Connect remote MCP integrations, plugin skills, and host-agent sign-in to keep work with the right agent.
What Agent Plugin Marketplace is
Agent Plugin Marketplace is Cosmic’s plugin catalog for installing vendor tools onto the agent that already owns the work. Each plugin is presented as a remote MCP integration with a small set of skills and a secret slot, so the relevant agent can use the external service without moving the task elsewhere.
The marketplace currently includes active listings for tools such as GitHub, Linear, Stripe, Cloudflare, Render, PostHog, Resend, Netlify, Sentry, Atlassian, Algolia, and Notion, along with a second group marked coming soon. The product is aimed at teams that want to route engineering, billing, deploy, content, search, and support-adjacent work to the right agent rather than a shared generic integration.
Features
Suggested host routing
The marketplace suggests a host agent for each plugin, but the user still chooses where it goes. That keeps the routing explicit rather than automatic.
Skill-specific access
Plugin pages list the skills that become available after install, such as GitHub releases, pull requests, and issues or Linear issues and cycles.
Host-side authentication
Several listings say the host agent signs in or stores credentials after install, including GitHub bearer tokens and Linear, Stripe, Cloudflare, Render, Netlify, Sentry, Atlassian, Algolia, and Notion sign-in flows.
Published availability status
The marketplace separates currently available plugins from coming-soon listings, giving users a clear view of what can be installed now and what is still pending review or OAuth support.
Common use cases
Engineering workflow support
Give an engineering agent access to GitHub or Linear so it can summarize releases, open or review pull requests, file issues, or inspect the active cycle without moving the work to a different agent.
Billing and operations tasks
Connect billing or commerce plugins such as Stripe so a finance- or operations-oriented agent can look up invoices, subscriptions, failed payments, or other account activity on the host tied to that work.
Deploy and infrastructure work
Install deploy and infrastructure plugins such as Cloudflare, Render, Netlify, or Vercel coming soon so a DevOps-focused agent can handle deploys, status, logs, DNS, cache purge, and environment settings in one place.
Content and discovery workflows
Use content and search plugins such as Notion, Algolia, or PostHog so a content or growth agent can work with pages, databases, reindexing, flags, insights, and errors on the appropriate host.
Support and CRM routing
Route support and CRM tools that are listed or coming soon, such as Intercom, Zendesk, HubSpot, and Slack, to the agent responsible for ticket clusters, notes, deals, search, or posting updates.
Pros and Cons
Pros
- Plugins are installed on the agent that owns the work, which keeps access aligned with the task and host context.
- Listings expose only the relevant skills for that integration, such as releases, pull requests, issues, cycles, deploys, or search.
- The marketplace distinguishes between available-now and coming-soon entries, making current coverage easy to check.
- Suggested host agents help teams decide where a plugin belongs before installation.
- The pricing page shows a free forever plan, so teams can start using Cosmic without an upfront payment barrier.
Cons
- Some listings are still marked coming soon, so the catalog is not fully open across every integration category.
- Several plugins require signing in or pasting credentials on the host agent, which adds setup steps after install.
- The source does not show a one-click universal install path; each plugin is tied to a specific host agent and skill set.
FAQ
How do plugin installs work?
The marketplace is for installing vendor plugins onto the Cosmic agent that already owns the work. The listing says each plugin is a remote MCP, a few skills, and a secret slot, and that nothing installs until you choose an agent.
Do I have to use the suggested host agent?
The plugin pages show that each listing is tied to a suggested host agent, but the user can choose a different agent. For example, GitHub suggests Marcus or Ponytail, and Linear suggests Marcus, while the page notes that the host signs in and the skills attach only to the host agent.
Are all plugins available now?
The source shows both available and coming-soon plugins. Available now includes GitHub, Linear, Stripe, Cloudflare, Render, PostHog, Resend, Netlify, Sentry, Atlassian, Algolia, and Notion; coming soon includes Intercom, Vercel, AWS Ship, Zendesk, HubSpot, Slack, Shopify, Figma, and Google Search Console.
What kinds of team workflows does the marketplace support?
The marketplace is built for team workflows where a specific agent handles a domain such as engineering, billing, content, search, or deploys. The plugin pages route each integration to a suggested host like Marcus, Claire, Kai, Ava, Nora, Elena, Leo, Priya, James, or Ponytail depending on the work.
Do plugins need authentication?
Some plugins require connecting the vendor account on the host agent after install. The GitHub, Linear, Stripe, Cloudflare, Render, Netlify, Sentry, Atlassian, Algolia, and Notion pages mention signing in or pasting credentials on the host, while others note OAuth connect coming soon on their upcoming listings.
Quick Facts
- Category
- AI agent marketplace
- Source domain
- cosmicjs.com
- Product type
- Vendor plugin marketplace for Cosmic agents
- Availability
- Available now and coming soon listings
- Pricing
- Free forever plan available; paid plans also listed
- Primary workflow
- Install remote MCP plugins on the agent that owns the work
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