Launch Wallet Operations
in Days, Not Months

Name: Fystack MPC Wallet Platform
Author: Fystack

Hybrid custody architecture with MPC vaults for long-term storage and Hyper Wallets for speed and scale. One API, multi-chain, production-ready.

Start Building API Documentation

USE CASES

One Platform, Various Use Cases

Fystack provides a unified custody and wallet infrastructure that adapts to multiple use cases, from exchanges and OTC desks to stablecoin payment apps and enterprise platforms.

Exchanges & OTC Desks

Secure high-volume deposits, withdrawals, and real-time balances across a unified hot, warm, and cold wallet architecture.

Payment & Stablecoin Apps

Streamline collections, payouts, and stablecoin operations via treasury automation with customizable policy approvals.

Crypto Payment Gateway

Accept crypto payments from customers, settle on-chain, and receive real-time webhook confirmations across multiple chains.

Unified Dashboard for Multichain Experience

Multi-workspace support for different teams, isolate operations by business unit while sharing infrastructure.

Fystack

Fystack treasury

Dashboard

Total Value

Receive Send

$2,399,240

Total Wallets

Create Wallet

Search item

Filters

NameTypeTop AssetsValue

Treasury Hot

MPC

$1,240,580

Cold Storage

MPC

$890,200

Payout Wallet

MPC

$245,100

Payment #01

Hyper

$18,340

Payment #02

Hyper

$5,020

Fystack treasuryDefault

Other Workspaces (9)

Exchange ProductionOwner

Fystack TreasuryOwner

Payment AppOwner

Workspace StagingViewer

Crypto TestingViewer

Create New Workspace

Built for Engineering Teams

Seamless Developer
Experience

Ship faster with production-ready SDKs and APIs designed for modern engineering workflows.

SDKs

TypeScript · Go

APIs

REST + Webhooks

Supported Chains

Get Started Documentation

KEY BENEFITS

Powerful Wallet Infrastructure via APIs

Create and manage wallets programmatically. Fystack handles key generation, MPC signing, and policy enforcement through a single REST API.

Programmatic Wallets

MPC-secured Signing

Policy-based Controls

Play Demo

POST /v1/wallets200 OK

{

"name": "Treasury",

"type": "MPC"

}

Fystack Engine

Processing wallet creation...

Validate

Policy

Sign

Broadcast

Wallet

Created

Policy

Applied

MPC

Secured

KEY BENEFITS

Build Once. Operate at Scale.

One integration to support 100K+ wallets across multiple chains. No in-house custody R&D needed, Fystack handles the complexity.

Launch in weeks, not months

No in-house custody R&D

Predictable, flat pricing at scale

Reduced operational risk

Play Demo

100K+

Wallets

Chains

99.9%

Uptime

Your Application

fystack.wallets.create()

Fystack Handles

Key generation & MPC ceremony

Multi-chain address derivation

Policy enforcement & approvals

Webhook notifications & indexing

One API, all chains

KEY BENEFITS

Automate Operations with Confidence

Set up approval workflows, automated sweeps, and real-time event streaming. Every transaction is policy-checked and fully auditable.

Approval Workflows

Automated Transfers

Webhooks & Events

Multi-channel Notifications

Play Demo

Approval Workflow

Transfer initiatedAPI call

Policy check passedAuto

Manager approvedadmin@co.io

Transaction signedMPC

Live EventsStreaming

transaction.signednow

webhook.delivered1s ago

notification.sent2s ago

Fully automated

Transaction RequestPending

Transfer 50,000 USDC→ 0x8f2...a1c

Security Pipeline

Policy: Max 100K per txPASS

Whitelist: Address verifiedPASS

Velocity: Under daily limitPASS

Quorum: 2 of 3 approved1/3

MPC Threshold Signing

Shard 1 ✓

Shard 2 ✓

Shard 3 ...

SECURITY & CONTROL

Security That Enables Automation

Every transaction passes through policy checks, whitelist verification, and quorum approvals before MPC signing. Automate with confidence.

MPC / Threshold Signing

Policies enforced before signing

Quorum approvals

Multi-channel Notifications

Enterprise

For teams that need custom integrations, SLA guarantees, and dedicated support.

Launch Wallet Operations
in Days, Not Months