Morpho SDKs

The Morpho Software Development Kits (SDKs) are a suite of TypeScript packages for building on the Morpho protocol - from a full-featured DeFi application to a liquidation bot, an indexer, or a simple data dashboard.

The recommended starting point is the Morpho SDK - the default abstraction layer that produces ready-to-send transactions for VaultV2 and MarketV1 (Morpho Blue) in a single, consistent surface. When you need raw entity classes, low-level fetchers, or custom calldata composition, the Morpho SDK ships those primitives as subpath exports, so you never have to reach past it. For fixed-rate, fixed-term lending through the Morpho Midnight orderbook, use the Midnight SDK instead.

Default: Morpho SDK

@morpho-org/morpho-sdk - the default and recommended SDK for application integrators. It is the abstraction layer that simplifies the Morpho protocol:

• One consistent abstraction layer across VaultV2 and MarketV1 (Morpho Blue), with V1 (MetaMorpho) supported under the hood for migrations / liquidity reallocation
• Builds final, deep-frozen viem Transaction objects - no calldata wrangling
• Handles ERC-20 approvals, Permit / Permit2 signatures, and Morpho setAuthorization for GeneralAdapter1 via a unified getRequirements() flow
• Composes Bundler3 / GeneralAdapter1 bundles for you (atomic supply+borrow, repay+withdraw, Blue-to-Blue refinance, V1→V2 migration, native-token wrapping)
• Slippage-protected by default (maxSharePrice / minSharePrice, LLTV buffer)
• Optional shared-liquidity reallocations through the PublicAllocator for borrow, withdraw, supply+borrow, and refinance flows
• Strict TypeScript, no any, dedicated error classes for every failure mode

pnpm add @morpho-org/morpho-sdk viem

→ Read the Morpho SDK guide · Source on GitHub · Package on npm

Fixed-term lending: Midnight SDK

@morpho-org/midnight-sdk - the viem-based toolkit for Morpho Midnight, fixed-rate / fixed-term lending through signed maker offers matched in an onchain orderbook. It covers both sides of the protocol:

• Make side - construct offers locally, commit them to a Merkle tree, validate against the Midnight API's mempool policy, sign or approve through a ratifier, and publish onchain
• Take side - query books, price levels, and quotes from the Midnight API, and execute ABI-ready takes against the Midnight contract

pnpm add @morpho-org/midnight-sdk viem

→ Read the Midnight SDK guide · Source on GitHub · Package on npm

Reaching below the abstraction layer

When you need to reach below the abstraction layer - for raw entity classes, low-level on-chain fetchers, custom calldata composition, or simulation pipelines - the Morpho SDK ships those primitives as subpath exports, so you never need a separate package:

• @morpho-org/morpho-sdk/entities - Core entity classes (Market, Vault, Position) and offchain computations. The foundation of the rest of the stack.
• @morpho-org/morpho-sdk/fetch - Viem-based fetchers for live on-chain data.
• @morpho-org/morpho-sdk/abis, /addresses, /constants, /bundler - ABIs, deployment addresses, protocol constants, and Bundler3 / GeneralAdapter1 helpers.

See the Morpho SDK guide for the full surface.

Where next

• Recommended starting point: Morpho SDK guide
• Fixed-term lending: Midnight SDK guide
• Source code: morpho-org/sdks - the SDK monorepo containing @morpho-org/morpho-sdk and @morpho-org/midnight-sdk
• Need help? Reach out via the chat on help.morpho.org.