🙋♀️At its core Vultisig is a multi-chain, multi-factor, multi-platform Threshold-Signature vault that does not need any specialised hardware. It supports most UTXO, EVM, BFT and EdDSA Chains.
It is powered by a modern DKLS TSS protocol, but adapted for the mobile environment.
In addition, the Vultisig team is constantly expanding the functionality and use of Vultisig with
- A Chrome browser extension - easy access to web3
- Web version - view your positions and join the airdrop
- A marketplace for Plugins and Ai Agents to automate the wallet
- A TypeScript SDK and MCP server for developers and AI agents
Vultisig is built by the founders of THORChain - who built the largest and oldest working multi-chain DEX with Threshold-signatures.
It is possible to create a vault with different secure setup options:
- Fast Vaults (One device solution, "hot wallet")
- 2 of 2 (fastest setup, not backed up*)
- 2 of 3 (recommended, backed up*)
- 3 of 4 (most secure)
The above are the most popular vault configurations and more can come in the future.\
🔮 Vultisigs are better than Single-sig or Multi-sig Wallets:
- Vultisig vault shares do not store funds - thus no funds at risk if you lose a key.
- There is no on-chain registration of signing-keys.
- Vultisigs are compatible with all chains and fully DeFi compatible (Multi-sigs are not).
📱 Vultisig uses your favourite laptops, tablets, and phones.
- Rich, large screens with familiar UI, Secure Enclaves to store vault shares and with biometric locking.
- Does not look like a hardware device and therefore grants higher security.
🌈 Vultisig is open-source, based on secure technology and is audited (see in the [docs](threshold-signature-scheme/security.md "mention"), with further audits to come).
There is no registration required.
Humans — It is far safer than anything else (mobile, desktop, hardware, etc). Self-custodial, seedless, multi-chain. One vault for everything.
AI Agents — Vultisig vaults are programmable. Agents can create vaults, sign transactions, and operate across 40+ chains via the TypeScript SDK, CLI, or MCP server. Fast Vaults enable full autonomy. Secure Vaults add human co-signing for oversight.
The TypeScript SDK (@vultisig/sdk) gives you everything: vault creation, address derivation, balance queries, transaction signing, cross-chain swaps across 40+ chains. Two vault modes:
| Fast Vault | Secure Vault | |
|---|---|---|
| Setup | 2-of-2 with VultiServer | N-of-M multi-device |
| Signing | Instant, no human needed | Requires device co-signature via QR |
| Agent use case | Full autonomy | Human oversight on every tx |
The CLI mirrors the full SDK for scripting and automation pipelines — JSON output, env var auth, zero interactive prompts.
Model Context Protocol server for Vultisig. Any MCP-compatible AI agent can query balances, build transactions, and operate vaults directly.
Available tools: set_vault_info, get_address, search_token, evm_get_balance, evm_get_token_balance, evm_check_allowance, evm_tx_info, evm_call, build_evm_tx — with UTXO, Solana, and Cosmos support expanding.
→ mcp
Agent-friendly files on vultisig.com:
| File | Purpose |
|---|---|
SKILL.md |
Full operating procedure — vault creation, sends, swaps, balances |
llms.txt |
Spec-compliant link index (llmstxt.org format) |
llms-full.txt |
Full SDK context with code examples |
agent.json |
Capabilities manifest — chains, operations, SDK info |
| Resource | Link |
|---|---|
| SDK API reference | vultisig.github.io/vultisig-sdk |
| SDK implementation guide | docs.vultisig.com/developer-docs/vultisig-sdk/SDK-USERS-GUIDE |
| CLI reference | docs.vultisig.com/developer-docs/vultisig-sdk/CLI |
| Agent integration guide | docs.vultisig.com/agent |
| Plugin dev docs | docs.vultisig.com/developer-docs/marketplace |
| Local dev environment | vcli |
| Component | Link |
|---|---|
| Plugin Marketplace | apps.vultisig.com · app-marketplace |
| Developer Portal | developer-portal |
| Verifier + Recipes | verifier · recipes |
| AI Agent Backend | agent-backend |
Vultisig is a ever expanding Ecosystem. Working on more platforms, products and features.
👩💻 Read the docs!
🍿 Download here: Vultisig:
- iOS AppStore
- iOS Testflight
- Google Play Store
- Google Play Store Web
- Android APK
- Windows application
- MacOS
🧰 Vultisig Extension - The chrome browser extension:
🧙 Contribute to the code (https://github.com/vultisig)
_*_backed up: meaning that a device can be lost and access to funds is still ensured. Deleting the application is equivalent to losing the device. To properly back up the vault shares, please use the following steps.