Vaulkyrie

Vaulkyrie is a Solana wallet suite for users and builders who want more than a single local private key. The suite brings together a browser wallet, cross-device signing coordination, FROST threshold custody, Privacy Vault flows powered by Umbra, and a post-quantum-oriented PQC Wallet path based on Winternitz one-time authorization.

Vaulkyrie is early-stage software. The code has not completed a formal third-party audit, the SDK and CLI are being prepared for public distribution, and this documentation should be treated as initial technical documentation for testing and review. Do not use Vaulkyrie for production custody or high-value funds yet.

Threshold Vault

Split signing authority across participants with FROST DKG and threshold Ed25519 signatures.

PQC Wallet

Use a Winternitz one-time authorization path that advances to a fresh root after each PQC spend.

Privacy Vault

Access private transfer workflows through Vaulkyrie’s Umbra integration.

What Vaulkyrie offers

Vaulkyrie is designed as a wallet suite rather than a single wallet mode.

Option	Who it is for	What it does
Threshold Vault	Teams, shared treasuries, advanced self-custody users	Requires a threshold set of participants to cooperate before a Solana transaction can be signed.
PQC Wallet	Users testing hash-based authorization models	Uses one-time Winternitz signing material and rotates to the next root after each spend.
Privacy Vault	Users testing private transfer workflows	Connects Vaulkyrie wallet flows to Umbra-powered private transfer operations.
Relay Server	Multi-device users and operators	Coordinates cross-device DKG/signing sessions and optional server cosigner support.
SDK and CLI	Developers	Provide instruction builders, PDA helpers, account decoding, DKG harnesses, and integration tooling.

Official links

Main website

The public Vaulkyrie website and landing page.

GitHub organization

The destination organization for Vaulkyrie repositories.

X / Twitter

Official Vaulkyrie updates.

System overview

Current code-sourced status

Surface	Current state
Browser wallet	Implemented as a Vite React browser extension in `src/`. It includes onboarding, approval UI, threshold signing, PQC wallet UI, Privacy Vault UI, and internal wallet SDK code.
Relay server	Implemented in `relay-server/src/`. It supports WebSocket ceremony relay, session invites, server cosigner registration/signing, and PQC sponsorship helpers.
Rust SDK	Implemented in `crates/vaulkyrie-sdk/`. It includes instruction builders, PDA helpers, account decoders, error decoding, and optional FROST helpers.
CLI	Implemented in `crates/vaulkyrie-cli/`. It is usable from the workspace for DKG harnesses, instruction JSON, PDA derivation, decoding, and inspection.
TypeScript SDK	Now being prepared as a package from browser SDK code. Until it is published, local workspace/package-link usage is the intended path.

Where to start

Read the codebase map to understand the moving parts.
Read Threshold Vault, PQC Wallet, and Privacy Vault to choose a wallet mode.
Read Rust SDK and CLI and TypeScript SDK before building an integration.
Read Readiness before testing with real infrastructure.

Start Here

Architecture

Wallet Modes

Protocol Deep Dives

Developer Reference

Threshold Vault

PQC Wallet

Privacy Vault

What Vaulkyrie offers

Official links

Main website

GitHub organization

X / Twitter

System overview

Current code-sourced status

Where to start

Threshold Vault

PQC Wallet

Privacy Vault

​What Vaulkyrie offers

​Official links

Main website

GitHub organization

X / Twitter

​System overview

​Current code-sourced status

​Where to start

What Vaulkyrie offers

Official links

System overview

Current code-sourced status

Where to start