Lightning Loop is a service that allows users to make a Lightning transaction to an onchain Bitcoin address (Loop Out), or send on-chain Bitcoin directly into a Lightning channel (Loop In). Loop can help manage channel liquidity, for example, by emptying out a channel and acquiring inbound capacity (or refilling a depleted channel).

Lightning Loop uses submarine swaps to transact non-custodially, meaning that Loop is trustless. Loop Out transactions are batched to save on transaction fees.

Loop uses L402s for authentication.

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{% content-ref url="the-loop-cli.md" %} the-loop-cli.md {% endcontent-ref %}

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