Breez

• Name: Breez
• URL: https://breez.technology/
• Category: Bitcoin payments SDK / Lightning infrastructure / app-embedded wallet and stable-balance tooling
• Tags: bitcoin-ecosystem
• Summary: Breez is a bitcoin-infrastructure company whose main product surface is the Breez SDK, a free and open-source developer toolkit for embedding instant, non-custodial bitcoin payments into apps and services. Its official materials show Breez operating less like a standalone consumer wallet and more like an application-layer control plane for Lightning, Spark, Liquid, on-chain interoperability, passkey onboarding, multi-device sync, and emerging stable-balance / tokenized-balance flows.
• What it does:
  • Provides SDKs for integrating non-custodial bitcoin payments and wallet functions into apps, services, wallets, and neobanks
  • Supports multiple implementation paths including Breez SDK - Spark and Breez SDK - Liquid, with different underlying settlement/connectivity models
  • Exposes payment rails and formats including Lightning addresses, LNURL variants, Bolt11/Bolt12, BTC addresses, Spark addresses, BIP353, and Liquid-based flows depending on implementation
  • Adds higher-level product features such as passkey login, stable-balance UX, multi-device/app sync, external signers, fiat onramps, and language bindings across major mobile, web, and backend stacks
  • Publishes substantial open-source implementation material through public repositories, CLI examples, bindings, demo apps, and SDK documentation
• Key claims:
  • Homepage and SDK pages position Breez as a way to add “instant, non-custodial bitcoin” to any app or service and repeatedly frame value transfer as a developer-embeddable feature rather than a standalone consumer product
  • Official SDK docs say the product is “nodeless,” end-to-end, non-custodial, and intended to remove the need for third parties while simplifying Bitcoin and Lightning integration work
  • Spark docs show Breez expanding beyond classic Lightning flows into a Bitcoin-native Layer 2 path with Spark payments, passkey login, stable-balance support, Spark token support, and multi-device sync
  • Liquid docs show a parallel implementation built around Liquid + Lightning interoperability, submarine swaps, reverse submarine swaps, on-chain interoperability, and multi-asset support including USDT on Liquid
  • Public GitHub materials show that the real source of truth is heavily docs/repo driven: Spark and Liquid documentation sites, open-source SDK repositories, multi-language example CLIs, and a public org positioning Glow as a white-label showcase app
  • Case-studies copy claims 75+ apps and services are building with Breez, which helps place it as ecosystem infrastructure rather than only an internal SDK experiment
• Whitepaper: No classic whitepaper or litepaper was found during this pass. The strongest primary materials were Breez’s homepage, SDK landing page, Spark and Liquid documentation, public GitHub organization, and Spark SDK repository; see ../whitepapers/breez-primary-sources-2026-04-25.md.
• Sources:
  • https://breez.technology/
  • https://breez.technology/sdk/
  • https://breez.technology/case-studies/
  • https://sdk-doc-spark.breez.technology/
  • https://sdk-doc-liquid.breez.technology/
  • https://github.com/breez
  • https://github.com/breez/spark-sdk

Internal linkages

• App-embedded Bitcoin payments peer built around a different stack lineage: lightning-dev-kit
• Wallet-session contrast when the app talks to an external wallet instead of embedding one: alby
• Packaged backend contrast for teams that want an API-first Lightning service rather than an embedded SDK: phoenixd

Governance / control risk

• Practical leverage accumulates around which SDK mode gets normalized, which liquidity and swap paths are used by default, how passkey or sync workflows are mediated, and how much policy the host app can silently impose on top of ostensibly non-custodial rails.

• Last reviewed: 2026-05-24 UTC