Technical architecture
Shard is built on top of Polymarket's core infrastructure : CLOB, relayer, and data API with a modular application layer on top that handles the workspace, widgets, privacy routing, and wallet management.
For technical details on Polymarket's core infrastructure, refer to the official documentation at docs.polymarket.com
Polymarket CLOB
Order matching and settlement
Shard Edge Layer
Public data caching — fully anonymous, no wallet exposure
Shard Privacy Router
Authenticated reads and signed writes via Header Anonymiser
Widget System
Modular UI layer — native widgets and partner integrations
Wallet Layer
Multi-wallet support via Gnosis Safe, up to 5 wallets per account
Non-Custodial
Shard never holds, touches, or has access to user funds. Keys never leave the user's device. Orders are signed locally in the user's wallet and routed through the Privacy Layer before reaching Polymarket. At no point does Shard have custody or control over any funds.
Zero Fees
Shard charges no fees of any kind.
Maker fee
0%
Taker fee
0%
Deposit fee
0%
Withdrawal fee
0%
Gas fees
Covered by Shard
All on-chain transactions order submission, wallet deployment, DeFi supply are gasless for the user. Shard covers all gas fees on Polygon. Standard Polymarket protocol fees apply on certain market categories see Fees.
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