L402 (Lightning HTTP 402)
Lightning Labs standard for paying for and authenticating to APIs with Bitcoin Lightning payments; Aperture is the reference reverse proxy.
Tags
Related
- x402: Open standard for internet-native payments built on HTTP 402, letting APIs and agents pay per request across crypto and fiat networks.
- Machine Payments Protocol (MPP): Open standard for machine-to-machine payments over HTTP 402, co-developed by Tempo and Stripe; charge per API request, tool call or content.
Guides & comparisons
- Pay for an API as an agent with x402 (Guide): How an agent pays per request for an HTTP API or MCP tool with x402 v2, from reading the 402 response to signing a USDC payment with spend caps, on testnet first.
- Agent payment protocols compared (Comparison): x402, MPP, L402, ACP, AP2 and UCP compared on what each standardizes, payment rails, wire format, governance, spec status and SDKs, so you can tell machine-payment protocols from agent-checkout protocols.
Sources
- https://l402.tech/
- https://docs.lightning.engineering/the-lightning-network/l402
- https://github.com/lightninglabs/aperture
Machine-readable
- JSON
- Markdown
- Source file on GitHub (edit via pull request)