# Trustodian

- [Introduction](https://sdk-guide.mintlify.app/sdk-guide/introduction.md): Server-side, non-custodial multi-chain wallets with vaults-multichain-sdk (TrustodianSDK)
- [Quickstart](https://sdk-guide.mintlify.app/sdk-guide/quickstart.md): From npm install to a broadcast transaction in one file
- [Authentication](https://sdk-guide.mintlify.app/sdk-guide/authentication.md): API keys, the wallet-password session, and userRef
- [Key Management](https://sdk-guide.mintlify.app/sdk-guide/key-management.md): How the wallet password, the three key shares and session unlocking work
- [Recovery Phrase](https://sdk-guide.mintlify.app/sdk-guide/recovery-phrase.md): The account seed your wallets derive from: derivation paths, state and errors
- [Strict authentication](https://sdk-guide.mintlify.app/sdk-guide/strict-authentication.md): When every signing action needs the wallet password again, and how to pass it
- [Errors](https://sdk-guide.mintlify.app/sdk-guide/errors.md): TrustodianBaseError, every error class, error codes, and how to recover
- [Wallets](https://sdk-guide.mintlify.app/sdk-guide/wallets.md): Create, read, and manage personal MPC wallets with TrustodianSDK
- [Hardware Wallets](https://sdk-guide.mintlify.app/sdk-guide/hardware-wallets.md): Ledger and Trezor accounts: what you build, what the SDK gives you
- [Transactions](https://sdk-guide.mintlify.app/sdk-guide/transactions.md): Send value from a personal wallet: fees, memos, address validation, and spend authorization
- [Preflight](https://sdk-guide.mintlify.app/sdk-guide/preflight.md): Simulate and verify a transaction before a signature is collected
- [Token approvals](https://sdk-guide.mintlify.app/sdk-guide/token-approvals.md): List the token allowances of your wallets and revoke or reduce them on EVM, Solana and Tron
- [Multisig Vaults](https://sdk-guide.mintlify.app/sdk-guide/multisig.md): Create, activate, and manage multi-signature vaults with the Trustodian SDK
- [Orders](https://sdk-guide.mintlify.app/sdk-guide/orders.md): Create, sign, and execute multisig vault transactions with the Trustodian SDK
- [Multisig Network Fees](https://sdk-guide.mintlify.app/sdk-guide/multisig-fees.md): How the Trustodian SDK estimates fees, and who pays at each step on each chain
- [Organization](https://sdk-guide.mintlify.app/sdk-guide/organization.md): Org context, team directory, membership, and employee wallet provisioning
- [Organization Wallets](https://sdk-guide.mintlify.app/sdk-guide/organization-wallets.md): Org-owned wallets, portfolios, UTXOs, history, and the Corporate Address Book
- [Organization Vaults](https://sdk-guide.mintlify.app/sdk-guide/organization-vaults.md): Org-owned multisig vaults, their per-chain activation lifecycle, and org orders
- [Governance & Policies](https://sdk-guide.mintlify.app/sdk-guide/organization-policies.md): Security policies, daily spending limits, limit groups, and the org audit trail
- [Address Book](https://sdk-guide.mintlify.app/sdk-guide/address-book.md): Save, look up, and whitelist recipient addresses with memo support
- [FAQ](https://sdk-guide.mintlify.app/sdk-guide/faq.md): Answers to the questions integrators hit first


This documentation is built and hosted on [Mintlify](https://mintlify.com), a developer documentation platform.