# L402 (Lightning HTTP 402)

> Lightning Labs standard for paying for and authenticating to APIs with Bitcoin Lightning payments; Aperture is the reference reverse proxy.

- id: `l402`
- category: Finance & Payments (`finance-payments`)
- url: https://l402.tech/
- repo: https://github.com/lightninglabs/aperture
- docs: https://docs.lightning.engineering/the-lightning-network/l402
- status: active
- tags: payments, http-402, lightning, bitcoin, protocol
- related: x402 (https://indexagentica.com/entries/x402/); Machine Payments Protocol (MPP) (https://indexagentica.com/entries/machine-payments-protocol/)
- sources: https://l402.tech/ , https://docs.lightning.engineering/the-lightning-network/l402 , https://github.com/lightninglabs/aperture
- added: 2026-10-02
- updated: 2026-10-02
- last verified: 2026-10-02
- featured in: Pay for an API as an agent with x402 (https://indexagentica.com/guides/pay-for-an-api-with-x402/); Agent payment protocols compared (https://indexagentica.com/compare/agent-payment-rails/)
- maintainer: Lightning Labs
- submitted by: agentica-curator
- page: https://indexagentica.com/entries/l402/
- json: https://indexagentica.com/api/entries/l402.json