What problem does your feature solve?
The x402 protocol currently supports one-time payments but lacks a specification for payment channels. Payment channels enable repeated micropayments with lower fees and faster settlement, which is critical for streaming payments and metered API access on Stellar.
What would you like to see?
A new specification added to coinbase/x402 that defines the payment channel scheme, including:
- Channel open/close lifecycle
- Off-chain payment updates and state management
- On-chain settlement
- Integration points with the existing x402 HTTP 402 flow
- Support for the facilitator to be the server's proxy to managing the channel lifecycle
- Stellar-specific considerations (e.g., Soroban smart contracts, channel accounts, authorization)
What alternatives are there?
Rely solely on one-time payments, but this limits use cases that require high-frequency micropayments.
What problem does your feature solve?
The x402 protocol currently supports one-time payments but lacks a specification for payment channels. Payment channels enable repeated micropayments with lower fees and faster settlement, which is critical for streaming payments and metered API access on Stellar.
What would you like to see?
A new specification added to
coinbase/x402that defines the payment channel scheme, including:What alternatives are there?
Rely solely on one-time payments, but this limits use cases that require high-frequency micropayments.