## Summary - Move build/env/DB setup out of the GitHub Actions workflow into an on-demand script (`packages/twenty-utils/setup-dev-env.sh`) that Claude invokes only when needed - Add Nx/build cache restore/save steps to speed up repeated runs - Add `allowed_tools` so Claude can run the setup script and common dev commands (nx, jest, yarn) - Add `PG_DATABASE_URL` env var via `settings` for the postgres MCP server - Remove unnecessary `actions: read` permission grant - Document the lazy setup pattern in CLAUDE.md This makes read-only tasks (code review, architecture questions, docs) fast by skipping the ~2min build/setup overhead, while still letting Claude run tests and builds when it needs to. ## Test plan - [ ] Comment `@claude what is the architecture of the backend?` — should answer fast without running setup - [ ] Comment `@claude run the twenty-server unit tests` — should call setup script first, then run tests - [ ] Verify cross-repo dispatch still works 🤖 Generated with [Claude Code](https://claude.com/claude-code) --------- Co-authored-by: Claude Opus 4.5 <noreply@anthropic.com>
The #1 Open-Source CRM
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Installation
See: 🚀 Self-hosting 🖥️ Local Setup
Does the world need another CRM?
We built Twenty for three reasons:
CRMs are too expensive, and users are trapped. Companies use locked-in customer data to hike prices. It shouldn't be that way.
A fresh start is required to build a better experience. We can learn from past mistakes and craft a cohesive experience inspired by new UX patterns from tools like Notion, Airtable or Linear.
We believe in Open-source and community. Hundreds of developers are already building Twenty together. Once we have plugin capabilities, a whole ecosystem will grow around it.
What You Can Do With Twenty
Please feel free to flag any specific needs you have by creating an issue.
Below are a few features we have implemented to date:
- Personalize layouts with filters, sort, group by, kanban and table views
- Customize your objects and fields
- Create and manage permissions with custom roles
- Automate workflow with triggers and actions
- Emails, calendar events, files, and more
Personalize layouts with filters, sort, group by, kanban and table views
Customize your objects and fields
Create and manage permissions with custom roles
Automate workflow with triggers and actions
Emails, calendar events, files, and more
Stack
- TypeScript
- Nx
- NestJS, with BullMQ, PostgreSQL, Redis
- React, with Recoil, Emotion and Lingui
Thanks
Thanks to these amazing services that we use and recommend for UI testing (Chromatic), code review (Greptile), catching bugs (Sentry) and translating (Crowdin).
Join the Community
- Star the repo
- Subscribe to releases (watch -> custom -> releases)
- Follow us on Twitter or LinkedIn
- Join our Discord
- Improve translations on Crowdin
- Contributions are, of course, most welcome!




