SHSelfHostIndex
ME

Mercure

Real-time updates protocol and server-sent events hub

Automation & Workflows ★ 5.3k stars Medium setup AGPL-3.0

Mercure is an open protocol and self-hosted hub for pushing real-time data updates to web and mobile clients over server-sent events. It is commonly used to automate live UI updates and event broadcasting.

Official siteSource code

Key features

  • Real-time updates protocol
  • Server-sent events hub
  • JWT-based authorization
  • Lightweight Go binary

Strengths

  • Released under the AGPL-3.0 license
  • First-class Docker support for quick deployment
  • Mature project with 5.3k GitHub stars
  • Written in Go

Is Mercure secure?

No known vulnerabilities affect Mercure's latest release (v1.1.2). OSV.dev lists 1 past advisory for the project; none of them applies to this release. No known vulnerabilities is not proof of security: it means none have been publicly catalogued.

  • Most recent fixed advisory CVE-2026-39972, published 2026-04-09 (188 days ago), fixed in 0.22.0

Source: OSV.dev, checked 2026-10-14. How this is measured.

Mercure replaces

Self-hosted Pusher alternatives

Health badge

Maintain Mercure? Add its health score to your README. The badge links back to this page.

SelfHostIndex: 92 · excellent

Markdown
[![SelfHostIndex health score for Mercure](https://selfhostindex.com/badge/mercure-hub.svg)](https://selfhostindex.com/app/mercure-hub/)
HTML
<a href="https://selfhostindex.com/app/mercure-hub/"><img src="https://selfhostindex.com/badge/mercure-hub.svg" alt="SelfHostIndex health score for Mercure"></a>
reStructuredText
.. image:: https://selfhostindex.com/badge/mercure-hub.svg
   :alt: SelfHostIndex health score for Mercure
   :target: https://selfhostindex.com/app/mercure-hub/

The score is recomputed on every nightly rebuild from public repository data — see how it is calculated.

Similar automation & workflows apps