Wallets

Self-custodial accounts that make crypto invisible

Onboarding users should be as simple as integrating OAuth: a zero friction front door to your product. With most wallet providers the real friction isn't in the pixels, it's in the trade-off between custody and UX. Rhinestone uses smart accounts and passkeys to generate keys locally on the user's device, which removes third-party vendors from the chain of custody. Compliance and legal never become the bottleneck.
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Wallets product interface preview

Custodial-grade experience.
Self-custodial by architecture.

Face ID to sign up. No seed phrase, no extension, no gas token, no chain switching. Keys are generated inside the user's device hardware and never leave it. Rhinestone accounts are unhosted by design and stay that way at every scale.

Passkey account sign-up and biometric authentication interface

Passkey accounts

Users sign up with their biometrics. Signing happens locally, so it's fast, with a flexible recovery model to meet your regulatory needs.

Hardware-grade security

Flexible recovery model to meet your regulatory needs

Multi-chain keystore built-in

Gas and fees, handled

Sponsor gas, swap and bridge fees on any supported chain from a single balance. Build stablecoin apps that don’t require users to understand gas tokens or any other DeFi fees.

Global gas sponsorship

Pay fees in any token

Sponsor DEX and bridge fees

Gas sponsorship and multi-token fee management interface
Session key permissions and delegated signing interface

Session keys

Let users delegate narrow, revocable permissions: this token, this amount, this contract, this long. Limits are enforced by the account onchain, not promised by a backend.

Build single-click flows

Delegate scoped keys for agents

Self-custodial and revokable

Coverage

Chains

18 EVM networks, Solana, and Tron.

Signers

Passkeys, external wallets, multisig, server-side keys.

Modular

Rhinestone co-authored ERC-7579 and is EIP-7702 compatible.

Who is it for

Regulated fintechs

You need keys generated and held by the user, proveably, to keep your architecture unhosted. This is the specific thing we're built for.

Consumer crypto apps

You're onboarding people who have never held a private key and should never deal with the pain of having to.

Agent platforms

Your agents need scoped permissions to spend without taking custody.

One integration. One SLA.

Rhinestone commits to SLAs no self-custodial vendor can match. We use our edge in account abstraction to ensure that all flows are self-healing and replayable, without compromising on security, self-custody or the user experience.

Uptime

Fulfilment rate

Settlement rate

Coverage

Response time

Recovery

SLAs are agreed per integration.

Self-custodial money movement for modern fintechs.

We work with a small number of teams at a time, closely. Tell us what you're building.

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