Non-custodial
Users sign their own intent. Operators sponsor execution, but never control user funds.
Open infrastructure for Stacks
Transactions should feel effortless.
OSSR is an open protocol for sponsored Stacks transactions. Users move sBTC without holding STX, while independent operators handle network fees.
Non-custodial Open source Built for sBTC
USER WALLETSign intent
OOSSR PROTOCOLRoute + sponsor
STACKSSettle onchain
LIVE Atomic settlement
0 STXrequired by users
1 signaturefrom intent to settlement
100%non-custodial by design
Openprotocol and operator network
THE PROTOCOL
A better transaction primitive.
OSSR separates user intent from fee payment, letting applications deliver gasless experiences without compromising ownership.
Open operator network
A permissionless relay layer designed for resilient routing and transparent competition.
One seamless action
Fees are handled behind the scenes, making Stacks applications feel fast and familiar.
HOW IT WORKSSimple for users.
Simple for users.
Powerful underneath.
A compact, verifiable flow connects wallets, relay operators, and the Stacks network.
Request a quote
A wallet asks the relay for a bounded sponsorship quote, including fees and expiry.
Sign once
The user authorizes the exact token movement—without ever needing to hold STX.
Relay atomically
An operator sponsors and broadcasts the transaction, settling its fee in the same flow.
Power the relay network.
Run infrastructure, sponsor transactions, and help create a more accessible Stacks ecosystem.
Operator overviewoperator
$ ossr-operator start✓ connected to stacks-testnet✓ relay ready for quotesMake gasless feel native.
Integrate sponsored sBTC transfers with a small, predictable API designed for modern applications.
Read the docsrequest.ts
const quote = await ossr.quote({ amount: 1000, token: 'sBTC' });
The open relay layer for Stacks.
Connect your wallet and experience sponsored transactions on testnet.
Connect to OSSR