The Package Manager
for Agentic Reasoning.
Stop writing 100-line prompts. Install versioned, proven agent behaviors directly into your repo. Works with Cursor, Windsurf, and Claude.
Trusted by builders using
The marketplace for
agent capabilities.
Like npm but for behavior: install packs for security, growth, payments, QA, and operations.
Everything stays local in .ai/. Vendor-neutral, versioned, team-shared.
Standardized
Universal schema. Works with any agent.
Collaborative
Syncs via Git. If you know it, the team knows it.
Shared
One protocol. Works with Cursor, Windsurf & Claude.
@ycombinator/delivery
Standardized shipping cadence & launch checklist.
@design/ui-audit
Automated heuristics for visual regression testing.
@stripe/payment-flow
Secure checkout implementation guidelines.
Bridge the registry to your agent
Marketplace → UCP → Your agent. Local-first in .ai/, vendor-neutral, versioned, and one command away.
The Marketplace
Global Registry (@corepackai)
Your Agent
Local Intelligence
Vendor Neutral
Works with Cursor, Windsurf, Copilot, and any future agent.
Zero Lock-in
Context lives in your repo (.ai/), not our servers.
Open Standard
Built on UCP and compatible with Anthropic's MCP.
Boot. Run. Sync.
No black boxes.
UCP loads your rules, applies patterns, and writes back learnings every session. Your agent stays aligned with your team—locally, verifiably, predictably.
Publish your own packs to share expertise. Install others to gain capabilities. Everything is versioned and portable, like npm for AI context.
Learn the Protocol
Manifesto, UCP spec, and product updates to understand how packs work.