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Most Solana DeFi protocols don't reinvent the wheel — they compose. Token-2022 for tokens, Pyth for prices, Wormhole/CCTP for bridges, Switchboard for fallback oracles, Marinade/Jito for staking, Squads for treasury multisig. Understanding the standard stack and where to plug in saves months of work.
The standard composition.
Layer Standard choice When to deviate
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Token SPL Token (or Token-2022) Confidential transfers, metadata
Price oracle Pyth (pull, fastest) Switchboard for redundancy/fallback
Stable peg USDC (Circle, native CCTP) USDT for some pairs (more volume but
less compliance-friendly)
Bridge Wormhole / Circle CCTP deBridge or Allbridge for niche routes
Multisig Squads v3 Realms for DAO-style on-chain voting
Staking Marinade (mSOL), Jito (jSOL) bSOL for permissionless / nodeless
Aggregator Jupiter (swap API) Self-built routing only for in-house
pairs no aggregator covers
Indexing Helius, Triton Self-hosted Geyser plugin if needed
Wallet adapter @solana/wallet-adapter Privy, MagicLink for embedded UX
Typical Solana DeFi stack composition: 80% off-the-shelf, 20% custom logic.
Custom logic is where you differentiate; everything else is plumbing.