Portage
Move your agent rules, prompts, and MCP servers between AI editors
● The Problem
SpaceX closed its $60 billion acquisition of Cursor on 14 August 2026, and teams spent the following weeks writing public posts about whether to stay. Leaving costs more than it looks: rules files, prompt libraries, MCP server configs, and per-repo agent instructions are all written in editor-specific formats that nobody exports.
● The Solution
One source of truth for agent configuration that compiles to Cursor rules, Claude Code settings, Zed, Windsurf, and Copilot instructions. Write the standard once, generate the per-tool files in CI, and switch editors without rewriting institutional knowledge.
Key Signals
MRR Potential
$5K-20K
Competition
Low
Build Time
2-4 Weeks
Search Trend
rising
Market Timing
The Hacker News thread on one company deciding whether to keep Cursor after the SpaceX acquisition drew 845 points and 540 comments in late August 2026. Cursor has roughly 4 million developers, and a meaningful share are now weighing an exit they cannot execute cheaply.
MVP Feature List
- 1One config format compiling to Cursor, Claude Code, Zed, Windsurf, and Copilot
- 2Importer that reads existing rules files from any supported editor
- 3MCP server definitions shared across tools
- 4Per-repo and per-directory scoping
- 5CI check that fails when generated files drift from source
- 6Team rule library with versioning
- 7Diff view showing what each editor actually receives
Suggested Tech Stack
Go-to-Market Strategy
Ship the converter as a free open source CLI and let it spread through the migration posts people are already writing. Charge teams for the hosted rule library, drift enforcement, and audit history. Time content to every acquisition and pricing change in the editor market.
Target Audience
Monetization
Per-SeatCompetitive Landscape
Each vendor ships an importer that only points inward, since Cursor wants your VS Code settings and not the reverse. Dotfile managers like chezmoi move files without understanding rule semantics. The neutral format has no owner, which is exactly why teams stay put.
Why Now?
AI editor consolidation started in 2026 with a $60 billion acquisition and has not stopped. Teams that standardized their agent instructions inside one vendor discovered the switching cost only after the ownership changed.
Tools & Resources to Get Started
Build It with AI
Open directly in an AI code generator or copy the prompt to start building Portage in minutes.
Replit Agent
Full-stack MVP app
Bolt.new
Next.js prototype
v0 by Vercel
Marketing landing page
Frequently Asked Questions
What problem does Portage solve?
SpaceX closed its $60 billion acquisition of Cursor on 14 August 2026, and teams spent the following weeks writing public posts about whether to stay. Leaving costs more than it looks: rules files, prompt libraries, MCP server configs, and per-repo agent instructions are all written in editor-specific formats that nobody exports.
How much MRR can Portage generate?
Portage has $5K-20K MRR potential with a Per-Seat model. The estimated build time is 2-4 Weeks with Low competition in the market.
What are the MVP features for Portage?
One config format compiling to Cursor, Claude Code, Zed, Windsurf, and Copilot. Importer that reads existing rules files from any supported editor. MCP server definitions shared across tools. Per-repo and per-directory scoping. CI check that fails when generated files drift from source. Team rule library with versioning. Diff view showing what each editor actually receives.
What is the go-to-market strategy for Portage?
Ship the converter as a free open source CLI and let it spread through the migration posts people are already writing. Charge teams for the hosted rule library, drift enforcement, and audit history. Time content to every acquisition and pricing change in the editor market.
Who is the target audience for Portage?
The primary target audience includes Platform Engineering Teams, Engineering Managers, Developer Experience Leads, Open Source Maintainers. AI editor consolidation started in 2026 with a $60 billion acquisition and has not stopped. Teams that standardized their agent instructions inside one vendor discovered the switching cost only after the ownership changed.
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