# Implementations and Links

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## L402 implementations and libraries <a href="#docs-internal-guid-835019d0-7fff-c5a5-1425-7948dcc6dd6f" id="docs-internal-guid-835019d0-7fff-c5a5-1425-7948dcc6dd6f"></a>

* [​Aperture: A gRPC/HTTP authentication reverse proxy using L402​](https://github.com/lightninglabs/aperture)
* [​lsat-js: A utility library for working with L402​](https://github.com/Tierion/lsat-js)
* [​boltwall: Nodejs middleware-based authentication using L402](https://github.com/tierion/boltwall)
* [now-boltwall: The Boltwall deployment toolkit](https://github.com/tierion/now-boltwall)
* [Aperture Dynamic Pricing Demo](https://github.com/ellemouton/aperture-demo)

## Projects using L402

* [Satring](https://satring.com/), a repository for L402 endpoints
* [WoT Scoring](https://wot.klabo.world/), an L402-gated way to discover Nostr networks of trust
* [​Lightning Pool](https://docs.lightning.engineering/lightning-network-tools/pool)
* [Lightning Loop](https://docs.lightning.engineering/lightning-network-tools/loop)
* [​L402 Playground​](https://lsat-playground.bucko.now.sh/)

## Further reading

* [Tierion: Pseudonymous Authentication using Bitcoin Lightning Payments](https://medium.com/tierion/lsats-pseudonymous-authentication-using-bitcoin-lightning-payments-459e209b4b36)
* ​[Macaroons: Cookies with Contextual Caveats](https://research.google/pubs/pub41892/)​\
  the 2014 paper published on Google Scholar.
* ​[HTTP/1.1 RFC, Section 6.5.2: 402 Payment Required](https://tools.ietf.org/html/rfc7231#section-6.5.2)​


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