Plugins
What ships built into Proliferate, and what you connect yourself.
You may have landed here from a link that called something a "plugin." An earlier version of Proliferate planned to bundle skills, MCP servers, and product features into installable, per-session plugins. That model was never shipped this way. What actually exists today is simpler, and split into two places depending on where the capability comes from.
Replaced. This page used to document a Skills + MCP + capability bundle you'd enable per session. That mechanism doesn't exist in the product. Below is what replaced it.
Built into Proliferate
Some capabilities are part of the agent itself. You don't install or connect them, they're available automatically whenever the work calls for them:
- Subagents: an agent can spawn child sessions to work on bounded pieces of a task in parallel, then read back their results.
- Plan & code review: gate agent output through a review step before it lands.
- Computer Use and Browser Use: letting an agent drive a desktop app or a real browser. These are planned, not yet available.
There's no catalog to browse or toggle for these. They show up as tools inside a session the same way the agent's core abilities do.
Tools you connect yourself
Everything else, third-party providers like Slack, Linear, Notion, or an internal tool your org runs, comes through Integrations. You connect your account once in Settings (OAuth or an API key, depending on the provider), and from then on every session you run can call that tool. An org admin can also register a custom integration for an internal MCP server your team runs.
This is the mechanism to reach for when you want to "give your agent a new tool." There's no separate plugin step: connecting the integration is the whole thing.