Stablecoin wallets & treasury automation

Name: Fystack MPC Wallet Platform
Author: Fystack

Build your own stablecoin rails.
No blockchain team required.

Start building Documentation

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

Platform

Everything to move stablecoins, in one stack

Wallets, MPC signing, sweeping, approvals and deployment. Use what you need, run it where you want.

One API for every chain. Create wallets, accept deposits and send payouts across Tron, Ethereum, Solana, Base, Bitcoin and more.

Treasury wallet7 chains

Total balance

$0.00

USDTTron1,284,910.00

USDCBase642,300.18

USDCSolana318,044.52

USDTEthereum96,120.00

Read the docs→

Keys that never exist in one place. MPC splits every key into shares across independent nodes. Transactions are signed without reconstructing the full key.

Signing sessionThreshold signing

Withdrawal · 50,000 USDT → 0x8f3a…c21e

MPC nodeAWS · SingaporeSigning…

MPC nodeGoogle Cloud · FrankfurtWaiting

Server cosignerAzure · Policy checkWaiting

Mobile cosigneriOS · Face IDWaiting

Full private key never assembled.

Open-source MPC node→

Money that moves itself. Deposits sweep from customer wallets into your treasury automatically, on a schedule or when balances cross a threshold.

Explore the platform→

Auto sweepEvery 10 min

1,200 USDTDeposit #4812

860 USDCDeposit #4813

2,450 USDTDeposit #4814

Treasury wallet$482,300

Deposits → Treasury0 of 3 swept

Gas, handled. Sponsor network fees for your users and refill fee wallets before they run dry.

AutomationsLive

Gas sponsorshipPay network fees for users

Auto gas refillTop up TRX when < 50

Balance alertsSlack when hot wallet < $10K

Explore the platform→

Every approval, on the record. Roles, approval groups, spending limits and a full audit trail.

Approval request> $25,000

Send 120,000 USDC to Acme Payouts

Treasury leadPending

CFOPending

CompliancePending

Compliance guide→

Run it on your own infrastructure. Your keys, your cloud, your compliance boundary. No per-transaction cut.

DeploymentYour infrastructure

KubernetesHelm chart

DockerCompose

SystemdBare metal

Self-host docs→

app.fystack.io

Built for developers

Integrate in days, not weeks

Everything your engineers need to ship stablecoin payments, without a blockchain team.

Watch intro

REST API & SDKs

One API across every chain, with SDKs for JavaScript, Python and Go and docs built for engineers.

Webhooks & Events

Get notified the moment deposits land, withdrawals confirm or approvals change. No polling nodes.

Sandbox & Testnet

Build and test the full flow on testnets before a single real dollar moves.

Monitoring & Alerts

Track balances, transactions and anomalies in real time with Telegram and Slack notifications.

Built for teams moving stablecoins at scale

Live in production with payment processors, fintechs, and digital-asset platforms moving real stablecoin flow every day.

Margin

No per-transaction cut

Stop losing margin to volume-based fees. Run the wallet layer yourself — no per-transaction cut, no revenue share.

Fits you if

You run stablecoin rails

You're a fintech, PSP, or neobank running stablecoin rails — hitting a competitor's volume cliff, or needing self-hosted for jurisdiction or licensing.

Deployment

Our cloud or yours

Start on Fystack Cloud, or self-host on your own infrastructure with Docker, Kubernetes, or Systemd. Same platform, your choice of boundary.

Trusted by teams moving real stablecoin volume

Use cases

One platform. Every stablecoin workflow.

From deposit rails to treasury sweeps — purpose-built for payments teams.

Stablecoin payment rail

Accept and send crypto payments at scale with automated reconciliation.

MPC wallet sweeps for automated fund collection
Multi-chain deposit address generation
Webhook notifications for real-time updates
Enterprise-grade security for payment flows

Checkout · Order #4821Tron · TRC-20

Amount due

250.00USDT

TQn9Y2…kh7Wx

Awaiting payment

Payment detected

Confirmed on Tron

POST /webhooks · payment.confirmed · 200

Fystack vs building in-house

Save engineering years and ship in days

Building a production-ready wallet stack in-house is expensive and slow. Fystack gives you the same infrastructure — without the team, the audits, or the wait.

Saved vs building in-house

$100k+/year

Skip the 3–4 engineer team, ongoing maintenance, on-call, and security audits.

Faster time to market

3–6 months

Go live faster with production-ready infrastructure and SDKs.

Security

Secured by MPC technology

Multi-Party Computation ensures your private keys never exist in one place, eliminating single points of failure.

No single point of failure

Distributed architecture across independent nodes

Split key shares

Keys divided and stored on different nodes

Private key never exists whole

Complete key never assembled in memory

Threshold signing

Cryptographic signatures without key reconstruction

MPC library on GitHub

Coming soon

Cosigners — sign from a hardware enclave

Add an independent signer that Fystack never controls. Every key generation and every transaction needs its signature — from a phone in your pocket or a daemon in your own infrastructure.

Learn more about Cosigner

Mobile cosigner

Approve from a device only your team can unlock.

Key share stored in Secure Enclave / StrongBox
Transaction decoded on-device — what you see is what you sign
Hold-to-sign with biometric confirmation
Push notifications for signs and key generation

Fystack nowSign requestTransfer 1,000 USDC · Ethereum

9:41

Sign request2m 41s

Transfer

1,000USDC

Ethereum · ≈ $1,000.00

FromTreasury Hot

To0x8f3a…c21e

Initiated byops@acme.io

PolicyMatched · 2 of 3

Reject Hold to sign

Server cosigner

A headless signer running in your own infrastructure.

One-command install with a scoped pairing token
Payload validated against policy before any signature
Policy engine signs programmatically, 24/7
Runs on your VPC — Docker, Kubernetes, or bare metal

ops@treasury — cosigner

✓Pairing token verified · workspace "Workspace 1"

✓Attestation OK · AMD SEV-SNP enclave

✓MPC params generated · 2 of 3 signers

●cosigner is up · listening on 127.0.0.1:7420

✓Awaiting sign requests…

⠋Listening for approvals…

Security built by experts

Security-first wallet infrastructure

Fystack is designed by cryptography and security experts in the field. Built with industry standard security practices from the ground up.

Encryption at Rest for Sensitive Data

Industry-standard DEK/KEK hybrid encryption model balancing security, performance, and operational simplicity.

High PerformanceLayered Security

Developer experience

Developer first platform. One unified API, multiple chains.

Write once, deploy everywhere. A single SDK that works across all major blockchains.

Supported chains

Bitcoin

Digital Gold

Ethereum

EVM Compatible

Solana

High Performance

Tron

USDT Powerhouse

BSC

BNB Chain

Base

Layer 2

Stellar

Coming soon

Cross-Border Payments

+ 10 more chains supported

Operations

Built for operational excellence

Everything you need to manage digital assets at scale with confidence and control.

Alerts & Monitoring

Real-time visibility across wallets and transactions.

Telegram & Slack notifications
Balance and transaction monitoring
Suspicious activity alerts

Automation

Automatically move funds with safety and efficiency.

Scheduled & threshold-based sweeps
Multi-chain native automation
Gas-optimized batching

Analytics & Insights

Clear operational insights for treasury teams.

Wallet performance metrics
Transaction and volume analytics
Actionable operational insights

Compliance & governance

Enterprise-grade compliance

Meet regulatory requirements with comprehensive controls and full transparency.

User Management

Role-based access control with granular permissions for team members and workspaces

Custom roles and permissions
Multi-workspace support

Approval Groups

Multi-signature approval workflows for sensitive operations and large transactions

Threshold-based approvals
Custom approval chains

Audit Trails

Complete immutable logs of all actions, changes, and transactions for compliance reporting

Immutable event logging
Export for compliance

Transaction Policies

Set spending limits, whitelists, and custom rules to control transaction behavior

Spending limits & velocity
Address whitelisting

Deployment

Deploy on your own infrastructure

Complete control over your private keys and data with self-hosted deployment.

Self-hosted

Deploy our MPC infrastructure within your own environment for complete control over your private keys and data.

KMS integration

Integrate with cloud-based KMS signers to enhance the security of your MPC cluster setup.

AWS KMS

Amazon Key Management

Google Cloud KMS

Cloud Key Management

Reliable backups

Encrypted, redundant backups safeguard your custody infrastructure against failures and data loss, meeting enterprise standards for business continuity (ISO 27001, SOC2).