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Agentic Payments

Agentic payments enable programmatic, per-request payments over HTTP — designed for AI agents, APIs, and machine-to-machine interactions. These protocols extend the 402 Payment Required HTTP status code into a machine-readable payment negotiation layer, allowing clients to pay for API requests natively on Stellar.

  • x402 on Stellar — An open protocol from the Coinbase Developer Platform for per-request payments using Soroban authorization entries, with facilitator-based verification and settlement.
  • MPP on Stellar — The Machine Payments Protocol for direct on-chain settlement via Soroban SAC transfers, with support for both one-time charge payments and high-frequency off-chain payment channels.