Solana Squads Multisig

Squads V4 Multisig

Overview

Squads is the dominant Solana multisig — the Solana ecosystem's equivalent of Gnosis Safe. The V4 protocol (program ID SQDS4ep65T869zMMBKyuUq6aD6EgTu8psMjkvj52pCf on mainnet-beta and devnet) is what real teams use today to secure program upgrade authority, custody team treasuries, hold large LP positions, and run on-chain DAO operations. The TypeScript SDK (@sqds/multisig) exposes three flavors of every action — multisig.instructions.* (returns an Ix you compose yourself), multisig.transactions.* (returns a signed VersionedTransaction), and multisig.rpc.* (builds, sends, and returns a signature). Most automation should target multisig.rpc.* on the backend and multisig.instructions.* from a wallet adapter frontend.

When to use this skill

Trigger this skill when the user wants to:

• Move a program's upgrade_authority off a single keypair onto a multisig (the #1 production use case — single-key upgrade authority is the most common source of catastrophic Solana program compromises)
• Set up a 2-of-3, 3-of-5, etc. team treasury for a startup, DAO, or fund
• Custody LP positions, vesting contracts, or token mint authority behind multiple signers
• Programmatically propose / approve / execute multisig transactions from a backend
• Migrate from the Squads webapp UI to scripted operations, or vice versa
• Rotate / add / remove multisig members

If the user wants a single-sig hot wallet, an SPL token mint, or a generic Solana transaction, this is the wrong skill.

Prerequisites

Pin these. The Squads program has been stable, but the SDK and @solana/web3.js v1 vs v2 split means version mismatches cause cryptic runtime errors.

{
  "engines": { "node": ">=20" },
  "dependencies": {
    "@sqds/multisig": "2.1.4",
    "@solana/web3.js": "^1.95.0"
  },
  "devDependencies": {
    "typescript": "^5.4.0",
    "ts-node": "^10.9.0",
    "@types/node": "^20.0.0"
  }
}

Notes:

• @sqds/multisig 2.1.4 (latest as of May 2026) targets @solana/web3.js v1. Do NOT use @solana/web3.js v2 (kit) with this SDK — wrong types, wrong Connection, wrong Keypair.
• A funded keypair on the target cluster. For devnet, solana airdrop 2 is usually enough for a full create + propose + execute cycle.
• An RPC endpoint. Public devnet (https://api.devnet.solana.com) is fine for testing; for mainnet use Helius / Triton / QuickNode.

Workflow

1. Core concepts (memorize these — most bugs come from confusing them)

A Squads multisig has four distinct PDAs you will derive:

The vault PDA is what you put funds into and what becomes the program upgrade authority — never the multisig account itself.

2. Create the multisig

multisig.rpc.multisigCreateV2() takes:

• createKey — a one-time Keypair whose pubkey seeds the multisigPda. Discard after; not used to sign anything later.
• creator — the Keypair paying for the create transaction.
• members[] — array of { key: PublicKey, permissions: Permissions }. Permissions are bitfields built from Permission.Initiate | Permission.Vote | Permission.Execute. Use Permissions.all() for full power.
• threshold — minimum approvals required (e.g. 2 for 2-of-3).
• configAuthority — null for an autonomous multisig (governs itself via configTransaction); set to a pubkey for a controlled multisig where that authority can unilaterally change membership. Most teams want null.
• timeLock — seconds between approval-reaching-threshold and execution. 0 for none. Use a real timelock (1–24h) for program upgrade authority multisigs.
• rentCollector — null is fine; set to recover rent from closed transaction accounts.
• treasury — the treasury field from ProgramConfig account; the create-fee goes here.

3. Find the vault PDA

const [vaultPda] = multisig.getVaultPda({ multisigPda, index: 0 });

Index 0 is the default vault every multisig has. You can derive vault 1, 2, ... and use them as separate sub-treasuries under the same governance.

4. Fund the vault

A vault is a normal PDA from the multisig's perspective — send SOL or SPL tokens to vaultPda like any other address. It will not show up in getMultisigInfo; check it with connection.getBalance(vaultPda).

5. Create a vault transaction

A "vault transaction" is a proposed CPI bundle the vault will sign. You build a TransactionMessage whose payerKey is the vault PDA (not your wallet), with the instructions you want the vault to execute.

const transferMessage = new TransactionMessage({
  payerKey: vaultPda,
  recentBlockhash: (await connection.getLatestBlockhash()).blockhash,
  instructions: [SystemProgram.transfer({ fromPubkey: vaultPda, toPubkey: dest, lamports })],
});

const newIndex = BigInt(Number(multisigInfo.transactionIndex) + 1);

await multisig.rpc.vaultTransactionCreate({
  connection, feePayer: proposer, multisigPda,
  transactionIndex: newIndex,
  creator: proposer.publicKey,
  vaultIndex: 0,
  ephemeralSigners: 0,
  transactionMessage: transferMessage,
  memo: "Transfer 0.01 SOL",
});

6. Create the proposal (separate step!)

vaultTransactionCreate only stores the message — members can't vote yet. You must call proposalCreate at the same transactionIndex:

await multisig.rpc.proposalCreate({ connection, feePayer, multisigPda, transactionIndex: newIndex, creator });

Pass isDraft: true if you're building a batch and want to add more before activating.

7. Approve from each member

Each member with Permission.Vote calls proposalApprove with their own Keypair. The proposal moves to Approved state when threshold is reached:

await multisig.rpc.proposalApprove({ connection, feePayer, multisigPda, transactionIndex: newIndex, member: memberKeypair });

8. Execute

Any member with Permission.Execute can fire it once Approved:

await multisig.rpc.vaultTransactionExecute({
  connection, feePayer: executor, multisigPda,
  transactionIndex: newIndex,
  member: executor.publicKey,
  signers: [executor],
  sendOptions: { skipPreflight: true },
});

skipPreflight: true is often needed — Squads' CPIs can confuse the simulator into reporting false errors. Confirm the on-chain signature for ground truth.

9. Squads webapp (squads.so) vs SDK

Use the webapp (https://v4.squads.so) when:

• You want a multisig for humans clicking buttons (treasury, DAO ops).
• You need to import existing token accounts visually.
• The signers are using hardware wallets — the webapp's wallet-adapter integration is way better than rolling your own.

Use the SDK when:

• You're automating proposal creation from a backend (e.g. scheduled treasury payouts, programmatic vesting unlocks).
• You're integrating multisig flows into your own product UI.
• You need to do batch operations the UI doesn't support (e.g. add 200 members programmatically — pragmatically you wouldn't, but the SDK lets you).

A multisig created via SDK is fully visible / usable in the webapp and vice versa — they're the same on-chain program.

10. Best practice: program upgrade authority

The single highest-leverage thing this skill enables. After deploying a program:

1. Create a multisig with at least 3 members, threshold ≥ 2, timeLock ≥ 86400 (24h).
2. Derive vault 0.
3. solana program set-upgrade-authority <PROGRAM_ID> --new-upgrade-authority <VAULT_PDA>.
4. From then on, every program deploy must be proposed as a BPFLoaderUpgradeable.upgrade instruction inside a vault transaction, approved, wait out the timelock, then executed.

The timelock means a single compromised key can't push a malicious upgrade in the time it takes to alert your team.

11. Best practice: changing membership

Changing members, threshold, or configAuthority is not a vaultTransactionCreate — it's a configTransactionCreate. Different PDA, different instruction, different proposal type. Common mistakes:

• Trying to add a member by encoding the SDK's addMember instruction inside a vault transaction. Won't work — the multisig account is only writable to itself via configTransaction.
• For controlled multisigs (configAuthority is set), the config authority can change membership directly without a vote. For autonomous multisigs (the default), member changes require the same threshold vote as any other action.

Always rotate one member at a time and verify the on-chain state between rotations.

Common pitfalls

1. Confusing the multisig account with the vault PDA. The multisig account holds the governance state (members, threshold). The vault PDA holds the money. They are different addresses. Funding the multisig account does nothing useful. Setting the multisig account as program upgrade authority makes the program unupgradeable. Always use getVaultPda({ multisigPda, index: 0 }) for anything involving value.

2. Forgetting that proposalCreate is a separate call after vaultTransactionCreate. The SDK splits them so you can build batches as drafts. If you skip proposalCreate, no one can vote and you'll get cryptic "proposal not found" errors at the approve step.

3. Vault index confusion. Almost every multisig only ever uses index 0. If you're seeing "vault balance is 0" but you funded the vault, you probably funded vault 0 but built the transaction message against vault 1 (or vice versa). The vaultIndex passed to vaultTransactionCreate MUST match the index used to derive the payerKey of the TransactionMessage.

4. Approving before the proposal is in Active state. Plain proposalCreate puts the proposal directly into Active. But proposalCreate({ isDraft: true }) (used for batches) leaves it as Draft — you must call proposalActivate before any approve will succeed. Symptom: InvalidProposalStatus error.

5. Changing members via vaultTransaction instead of configTransaction. Member / threshold / config-authority changes require configTransactionCreate + configTransactionExecute — a completely separate flow from value-moving vault transactions. The instructions live under multisig.rpc.configTransaction*. See docs.squads.so/main/development/typescript/instructions/controlled-multisig-instructions.

6. Reusing createKey keypairs across multisigs. createKey seeds the multisigPda. If you accidentally reuse the same createKey.publicKey, the second multisigCreateV2 will fail with "account already exists." Always generate a fresh Keypair per multisig.

7. Reusing member keys across multiple multisigs without rotation. Each member's signing key is a single point of failure across every multisig it sits on. If wallet X is on 5 multisigs and gets compromised, all 5 are at the threshold-minus-one. Best practice: dedicated hardware-wallet keys per multisig, or at minimum per security domain (treasury vs. upgrade-authority).

8. @solana/web3.js v2 incompatibility. @sqds/multisig 2.1.4 is built against web3.js v1. If your project upgraded to web3.js v2 / kit, you'll get TypeScript errors about Keypair and Connection types not matching. Either pin web3.js v1 for the multisig surface or wait for an SDK v3.

9. Treasury vs rentCollector confusion. treasury (required) is the program's fee recipient — set it from ProgramConfig.treasury, not your own wallet. rentCollector (optional, can be null) is where rent flows when transaction accounts close — set it to your multisig vault if you want to recover that rent.

10. Stale transaction index. Multisigs track a monotonically incrementing transactionIndex. Always read it from Multisig.fromAccountAddress(...).transactionIndex, add 1, pass as BigInt. Hardcoding 1n only works for the very first transaction.

References

• Squads docs: https://docs.squads.so/main/development/typescript/overview
• Squads V4 program source: https://github.com/Squads-Protocol/v4
• Reference TypeScript examples: https://github.com/Squads-Protocol/v4-examples
• TypeDoc API: https://typedoc.squads.so/
• Webapp (mainnet + devnet): https://v4.squads.so
• npm package: https://www.npmjs.com/package/@sqds/multisig (latest 2.1.4)
• Program ID (mainnet + devnet): SQDS4ep65T869zMMBKyuUq6aD6EgTu8psMjkvj52pCf

Example scripts

See scripts/create-multisig.ts and scripts/propose-and-execute.ts. Both run against devnet out of the box.

# Setup
npm init -y
npm i @sqds/multisig@2.1.4 @solana/web3.js@^1.95.0
npm i -D typescript ts-node @types/node

# 1. Create the multisig and fund vault 0
npx ts-node scripts/create-multisig.ts

# Copy the printed `MULTISIG_PDA` and paste it into propose-and-execute.ts
# (or set it via env var — see the script).

# 2. Run the full propose -> approve x2 -> execute flow
npx ts-node scripts/propose-and-execute.ts