LSPS2
JIT channels
lsp/LSPS2 at main · BitcoinAndLightningLayerSpecs/lsp
The LSP generates non-standard forwards, where the amount received by the client is smaller than specified in the onion; the client MUST accept the non-standard forward(s), provided they sum to at least payment_size_msat - opening_fee.
bLIP-0025: Allow forwarding HTLCs that underpay the onion encoded value by valentinewallace · Pull Request #25 · lightning/blips · GitHub
https://github.com/BitcoinAndLightningLayerSpecs/lsp/pull/22#discussion_r1136081531