Give your agent a budget,
not your keys.
Vellar is building the agent-payments stack for Stellar on x402 — smart accounts that pay HTTP-402 APIs autonomously, budgets enforced on-chain, and trust-ranked discovery. Secured by passkeys, not seed phrases.
The agent-payments stack for Stellar.
x402 is the open protocol that turns HTTP 402 into machine-payable APIs. We're building every layer of it on Stellar: the payer — smart accounts with scoped agent keys — the settlement rails, and trust-ranked discovery so agents pay the right services.
Agent keys with on-chain budgets
One passkey tap mints your agent a scoped session key — locked to the tokens you choose, capped by a spending-limit policy. The budget lives in a contract, not in code the agent could bypass, and you can revoke the key remotely any time.
Autonomous payments via the SDK
The first x402 client built for Stellar smart accounts. One call handles the 402 challenge — sign headlessly, pay, get the resource. An over-budget payment fails on-chain before any money moves.
Facilitator + trust-ranked Bazaar
Our open-source facilitator verifies and settles x402 payments — including policy-governed smart accounts other facilitators reject — and its Bazaar lets agents discover payable APIs ranked by real settlement data and contract verification.
Your everyday Stellar wallet.
Web-first
Create and use your smart wallet straight from the browser — no download, no seed phrase. Just a passkey.
Developer SDK
Add passkey login and a Stellar smart wallet to your app in minutes — self-custodial, fee-sponsored, no seed phrases.
Connect to any Stellar dApp.
The Vellar extension pairs with your wallet once, then approves dApp connections and signing — with the same passkey and on-chain policies you already set. No seed phrase ever enters the browser.
Pair once
Approve the extension from your wallet with a single passkey tap. It gets a secure device key — bound to your account, and it expires automatically.
Connect to dApps
When a Stellar app requests access, the extension shows exactly which site is asking. You approve per-origin — nothing connects silently.
Review & sign
Every transaction is decoded and shown before you approve. Your spending limits and policies are enforced on-chain — the extension can't bypass them.
Everything a smart wallet should do.
Agents are only half the story. Vellar is a full self-custodial smart wallet for people too — passkeys, programmable policies and trust signals layered over your Stellar account. No custody, no compromises.
Instant DEX swaps
Trade Stellar assets natively without leaving your wallet — settled on-chain in seconds.
Programmable policies
Spending limits, co-signers, time locks and allow-lists — enforced by the network, not a promise.
Contract verification
See exactly what a contract does before you sign. Vellar flags what's verified and what's risky.
Sponsored fees
Vellar sponsors network fees on everyday transactions — no need to hold XLM just to get started.
Passkey security
Unlock with Face ID, Touch ID or a security key. Keys live in your device's secure enclave — nothing to write down, nothing to leak.
Guided account cleanup
Reclaim locked reserves from unused trustlines and stale entries. Every step is laid out for you to review and sign — closing an account moves its funds and can't be undone.
Non-custodial
Your account and keys live on Stellar and in your enclave. We never touch your funds.
Trust signals
Every signature comes with a plain-language breakdown and a risk score before you approve.
Developer SDK
Ship passkey auth, policies and contract-verification tooling into your own Stellar app.
Frequently asked questions
Still curious? Reach us at hello@vellar.xyz or read the developer docs.
Can my AI agent spend from my wallet? +
Is Vellar custodial? +
What happens if I lose my device? +
Do I need the browser extension? +
What are programmable policies, exactly? +
Is it ready for teams and developers? +
Try out the
SDK
Add passkey login, a Stellar smart wallet and x402 agent payments to your app in minutes — self-custodial, fee-sponsored, no seed phrases.