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Sphinx Relay

Chat and pay over the Lightning Network

Social Networks ★ 247 stars Easy setup free

Sphinx Relay turns your Lightning node into a personal communication server. Messages are end-to-end encrypted and transmitted over the Bitcoin Lightning Network. Download Sphinx on your phone from https://sphinx.chat and pair it with Sphinx Relay on Umbrel. Communication between Sphinx Relay nodes takes place entirely on the Lightning Network, so it is decentralized, untraceable, and encrypted. Messages are encrypted using client public keys on the Sphinx app. You can join tribes at https://tribes.sphinx.chat. If you join a podcast tribe, you can listen to the podcast in Sphinx and stream don.

Official siteSource code

Strengths

  • Easy to set up — beginner-friendly
  • First-class Docker support for quick deployment
  • One-click install on common self-host platforms
  • Written in TypeScript

Is Sphinx Relay secure?

OSV.dev has no published security advisories for Sphinx Relay's repository. No known vulnerabilities is not proof of security: it means none have been publicly catalogued.

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

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SelfHostIndex: 7 · at risk

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

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