What Block builds for agent payments
L402 (Lightning HTTP 402) is the bitcoin-native cousin of x402. Block’s ecosystem is one historical root of “paywall over HTTP with satoshis.” Compare rails on our x402 vs L402 page.
Block
Square / Cash App parent — long-running agent & bitcoin payments research.
Gateways & Processors L402
Block vs other gateways & processors
| Company | Protocols | HQ | Founded | OSS repos |
|---|---|---|---|---|
| Block | L402 | Oakland, USA | 2009 | 0 |
| PayPal | MCP | San Jose, USA | 1998 | 0 |
| Visa | Cards | Foster City, USA | 1958 | 0 |
| Mastercard | Cards | Purchase, USA | 1966 | 0 |
On mpp.best
Block’s own repositories
No org-matched repos in the directory yet — browse the protocol categories instead.