The most powerful thing you can give an AI agent is a boundary.

Let your users delegate on-chain transactions to AI agents through programmable wallets—governed by policies that prevent unauthorized actions while keys stay safe in hardware.

On-chain AI Agents

Key delegation

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Policy-protected keys

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High-performance signing

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Social login

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Key delegation

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Policy-protected keys

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High-performance signing

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Social login

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Key delegation

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Policy-protected keys

•

High-performance signing

•

Social login

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This is where things get tricky.

Challenges

AI agents should execute, not orchestrate.

Grant on-chain AI agents the ability to execute transactions on behalf of your users—without ever exposing private keys. Set strict guardrails to define exactly what agents can and cannot do, ensuring every transaction stays within the user’s control. With policy-driven permissions, social login features, and hardware protection, AI-powered automation becomes secure and easy to use.

Solutions

This is how design meets execution.

Keep agent autonomy scoped and revocable.

Hardware-enforced logic

Securely run agent instructions inside TEEs, then layer governance controls on top to prevent unauthorized modifications (even if the AI agent is prone to prompt injection). Use code to integrate independent and untainted market data or other real-time inputs.

Delegation and revocation

Delegate permissions to AI agents, allowing them to sign transactions without accessing key material. Allow users to immediately change or revoke permissions from their agent for any reason at any point.

Low-latency performance

Sign fast enough for speed-critical applications like AI-powered trading. Hardware offers a performance advantage that MPC can’t match.

A Case Study on On-chain AI Agents

AI Automation: A Real-World Use Case

K3 Labs chose Cubist to provide the secure wallet infrastructure behind their AI-powered Web3 automation platform. K3 users retain full ownership and hardware-backed protection of their keys, while delegating only the permissions needed for K3 to execute configured workflows.

Case Study

“We are happy to be working with Cubist to make Web3 easier to use by automating many of the most common repetitive tasks for both technical and non-technical users. Their focus on security without sacrificing convenience made Cubist a great fit for us.”

William Herkelrath • Co-Founder & CEO at K3 Labs

Benefits

Unchecked AI autonomy isn’t progress—it’s a security risk.

Grow your user base by providing AI automation that helps users feel safe.

Prevent rogue agents

Program set guardrails that control what actions agents can and cannot take (e.g., require Passkey approval for non-stablecoin swaps), ensuring keys won’t sign unintended transactions.

Keep users in control

Private keys stay inside secure hardware unless the user exports them. Agents get permission to transact, but never access key material.

Scale agent operations

Endlessly parallelize your agents with horizontal scaling: generate millions of non-custodial wallets, and sign many thousands of transactions in seconds.

Give agents autonomy without exposing keys.

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