The payment layer for AI agents on Stellar.
Vellar is building on x402, the open protocol that turns HTTP 402 into machine-payable APIs. Sellers need a way to charge for an API without building settlement infrastructure, and agents need a way to find and pay for what they need. Vellar is that layer on Stellar.
The facilitator
Open source, verifies and settles x402 payments on Stellar, fees sponsored.
The Bazaar
Searchable discovery so agents find payable endpoints after a real settlement.
Buyer tools
Search and pay for a resource in one step, with an MCP discovery server for agents.
Seller tools
Point a resource server at the facilitator and gate any route with a 402 challenge.
Every claim here is meant to be checkable: the facilitator is open source, its testnet settlements resolve independently on the Stellar ledger, and it's listed in Stellar's own x402 documentation as a community facilitator.
David Ejere
Founder & builder
I'm building Vellar so that AI agents can pay for the APIs and tools they use, without a seller having to build payment infrastructure and without a buyer having to hand over a key. x402 gives us the protocol; Vellar is the open-source facilitator and Bazaar that make it work on Stellar, verifiable end to end.
Get paid by agents today.
Add an x402 payment gate to any endpoint in minutes, open source, non-custodial, fees sponsored.