# Protocols

> Protocols: Lightning tools for AI agents that pay in Bitcoin.

Canonical: https://satsforbots.com/category/protocols/

## Protocols
3 tools. [All tools](https://satsforbots.com/directory/)
[Protocols](https://satsforbots.com/category/protocols/)
### [L402 Protocol Spec](https://satsforbots.com/tool/l402-protocol-spec/)
Specification for HTTP 402 Lightning payment authentication with macaroons

[Protocols](https://satsforbots.com/category/protocols/)
### [Nostr Wallet Connect (NWC)](https://satsforbots.com/tool/nostr-wallet-connect-nwc/)
Open protocol for apps and agents to control a remote Lightning wallet with scoped permissions

[Protocols](https://satsforbots.com/category/protocols/)
### [Cashu](https://satsforbots.com/tool/cashu/)
Chaumian ecash protocol on Bitcoin/Lightning used for private agent micropayments