Is L402 an open standard? It doesn't appear to be.
X402 is an open standard backed by the Linux Foundation.
I'm honestly not the biggest fan of the Linux Foundation as a company, nor of many of the names behind X402 (e.g. Coinbase) but if I had to choose between these two standards for something I was implementing, I know which one I'd be less worried about vendor lock-in with.
In fairness, both of these standards are from & for the cryptobro universe. Just that x402 is supported by large corps & l402 is created by some arbitrary shady crypto startup nobody has heard of.
It's even possible that x402 directly took ideas from l402 given l402 seems to be a few months older, but x402 has over 1000 contributions from almost 100 contributors & l402 seems to be solo project without any updates this year. It's not a moral preference, just a practical one.
X402 is an open standard backed by the Linux Foundation.
I'm honestly not the biggest fan of the Linux Foundation as a company, nor of many of the names behind X402 (e.g. Coinbase) but if I had to choose between these two standards for something I was implementing, I know which one I'd be less worried about vendor lock-in with.