PGX
PGX is a lightweight Postgres runtime that creates thousands of short-lived, isolated databases for AI agents, tests, and CI jobs.
What it is good for
- Giving each AI coding agent its own throwaway database
- Running tests against a fresh database for every pull request
- Creating preview databases quickly and deleting them afterward
- Keeping many temporary databases from using too much memory
At a glance
- Who it is for
- Setup
- Guided command-line setup
Level 4 of 5. You copy and paste commands into a terminal by following the instructions. Comfortable territory for vibe coders.
- Cost
- Free and open source
- Type
- Other
- Tasks
- Works with
- Claude Code, Cursor, Codex, Rails, Django, Prisma
Momentum
- Rank this week
- Not ranked (last #42, week 43, 2026)
- Best rank
- #42 week 43, 2026
- GitHub stars
- 637
GitHub numbers as of Nov 2, 2026. Updated weekly.
Ranking history
Official links
Setup steps are on the official pages. We do not repeat them here, since they change.
Questions
- Is PGX free?
- Yes. It is free and open source (AGPL-3.0 license).
- Do I need to know how to code to use PGX?
- You do not need to write code, but setup means copying and pasting commands into a terminal by following its instructions.
- What does PGX work with?
- According to its own documentation, it works with Claude Code, Cursor, Codex, Rails, Django, and Prisma.
- What is PGX good for?
- Giving each AI coding agent its own throwaway database, running tests against a fresh database for every pull request, creating preview databases quickly and deleting them afterward, and keeping many temporary databases from using too much memory.
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