The agent-payments stack for Stellar.
Vellar is building on x402, the open protocol that turns HTTP 402 into machine-payable APIs. AI agents need to pay for the services they use, and nobody should have to hand an agent their keys to make that possible. So we build every layer on Stellar.
Agent keys
Scoped session keys with budgets enforced by on-chain policy contracts.
x402 client
The first x402 client built for Stellar smart accounts, in the vellar-sdk.
Facilitator
Open source, verifies and settles x402 payments on Stellar.
Bazaar
Trust-ranked discovery so agents find and pay the right services.
Underneath it all is a self-custodial passkey smart wallet: sign in with Face ID, Touch ID or a security key, and your account is a smart contract enforcing real on-chain rules.
David Ejere
Founder & builder
I'm building Vellar so that money on Stellar works for both people and their agents, with no seed phrases to lose, no blind signing, and budgets the network enforces rather than a promise in the UI. Vellar started as a passkey wallet and is growing into the agent-payments stack on x402 that other Stellar developers can build on.
Ship agent payments today.
Add passkey login, a Stellar smart wallet and x402 agent payments to your app in minutes, self-custodial, fee-sponsored, no seed phrases.