Action Control

TACo Threshold Signing is currently in alpha and available only on the DEVNET environment.

TACo Signing vs. Alternatives

• Custodial Signing APIs. Centralized services (e.g., Fireblocks, Coinbase Custody) can be used to manage signing keys on behalf of users or applications. However these present with a single point of failure and trust, where if the provider is compromised or misbehaves, the signing authority is at risk. There is typically no native support for programmable access control.

• Threshold MPC Services. Proprietary threshold signing solutions using multi-party computation (MPC) are often provided as SaaS. Such services are opaque and vendor-locked. The policy or signing condition logic is often inaccessible or non-verifiable, and reliance on a single provider reduces decentralization and auditability.

• Basic Multisig Wallets. On-chain wallets (e.g., Gnosis Safe) similarly require M-of-N approvals to execute transactions. However, practically, they are manual and rigid, requiring individual wallet owners to coordinate signatures manually. It also lacks support for automated, dynamic policies based on real-time data or off-chain claims.

• Single-Key Wallets. Traditional wallets or smart contract accounts can be secured by a single private key. In such cases, there is no fault tolerance and if the key is lost or compromised, the signing authority is irrecoverably broken. Additionally, there is no native support for automated/conditional logic or multi-party governance.