Mercur
Open-source headless platform for building multi-vendor marketplaces, built on the Medusa commerce core.
www.mercurjs.comrepositorydocs
Mercur is a headless platform for multi-vendor marketplaces, built as a Medusa application with a marketplace layer on top, as its architecture guide describes. Marketplace operators use an admin panel and sellers use a vendor panel. Each store’s members hold roles that are resolved per store, and PostgreSQL stores all data.
The self-host guide runs the API in server mode, which serves the admin panel, and deploys the vendor panel as a separate static app.
Worth knowing
The repository is MIT-licensed, but the Mercur Enterprise modules are a separately licensed suite that comes with a support contract. Medusa Cloud is named as a managed deployment target next to self-hosting. The README lists Redis next to Node.js and PostgreSQL as a prerequisite.
Identity
Rendering and deploy
- Runs as
- Always on, Static files9
- Install with
- bun create mercur-app4
Releases
Adoption
Sources
- 2026-10-23: name, links
www.mercurjs.com - 2026-10-23: links, Written in, GitHub stars
github.com/mercurjs/mercur - 2026-10-23: links
docs.mercurjs.com - 2026-10-23: License, License model, Runtime, Minimum runtime, Categories, Install with, Admin interface
github.com/mercurjs/mercur/blob/main/README.md - 2026-10-23: Built on
docs.mercurjs.com/learn/architecture.md - 2026-10-23: Maintainer, Headquarters
www.mercurjs.com/privacy-policy - 2026-10-23: First release
github.com/mercurjs/mercur/releases/tag/v0.9.0 - 2026-10-23: Current major version, Last release
github.com/mercurjs/mercur/releases/tag/v2.3.7 - 2026-10-23: Databases, Runs as
docs.mercurjs.com/resources/deployment/self-host.md - 2026-10-23: Contributors
api.github.com/repos/mercurjs/mercur/contributors - 2026-10-23: npm downloads a week
api.npmjs.org/downloads/point/last-week/@mercurjs/core