Skip to content
The Agent Economy

Infrastructure directory

Comparison

L402 vs x402

L402 and x402 are Payment rails listings set side by side. L402 is live. x402 is live. HTTP 402 flow that pairs a macaroon with a Lightning invoice. The client pays, then presents the preimage so the server can check payment without a lookup.

Last verified 2026-10-16 (L402), 2026-10-16 (x402)

Sources

Payment rails

L402 vs x402
FieldL402x402
StatusLiveLive
Open sourceYesYes
Last verified2026-10-162026-10-16
Mechanism

HTTP 402 flow that pairs a macaroon with a Lightning invoice. The client pays, then presents the preimage so the server can check payment without a lookup.

Open HTTP payment standard. A server answers with status 402, the client pays and retries, and a facilitator can verify and settle the payment.

Tags

http-402, lightning, macaroons

http-402, stablecoins, pay-per-call

Links
Sources

Tags

Shared
http-402
Only L402
lightning, macaroons
Only x402
stablecoins, pay-per-call

Glossary

Questions

What is the status of L402 and x402?
L402 is live. x402 is live.
When was each listing last verified?
L402 was last verified 2026-10-16. x402 was last verified 2026-10-16.
Does this page score L402 against x402?
No. The page restates each mechanism and cites the listing sources.

Other comparisons in Payment rails