Sentinel AI — Autonomous Onchain Investment Committee

🚀 Live Project Links

• Live Demo: https://sentineel.netlify.app/

• GitHub Repository: https://github.com/rohan911438/Sentinel-AI

• Video Demo: https://youtu.be/SsjmK9SI6ao?si=ZCb1lBUF5swy4D7w

• Pitch Deck: https://docs.google.com/presentation/d/1Cu2ED94fC9-hXvZVitRDpb99U_3ziv72W07DbeK9KxQ/edit

• Builder Feedback Blog: https://dev.to/roan911/building-sentinel-ai-my-journey-through-the-metamask-smart-accounts-x-1shot-api-x-venice-ai-dev-376d

Problem Statement

Crypto investing remains fragmented, stressful, and insecure.

Users must continuously monitor markets, evaluate countless information sources, manage gas fees, sign transactions, and manually enforce risk controls. Existing trading bots introduce another problem: users must trust a single automated system with significant authority over their funds.

At the same time, AI agents are becoming increasingly capable. However, allowing a single AI model to directly manage capital creates a dangerous single point of failure.

Sentinel AI solves this problem by introducing an Autonomous Onchain Investment Committee powered by multiple specialized AI agents, MetaMask Smart Accounts, ERC-7715 Advanced Permissions, ERC-7710 Delegation, x402 Payments, and 1Shot Permissionless Relayer infrastructure.

Rather than trusting a single AI, users delegate limited authority to a committee of specialized agents that research, debate, validate, and execute decisions within strict onchain security boundaries.

What Makes Sentinel AI Different

Most AI investing solutions rely on a single reasoning engine.

Sentinel AI introduces a Multi-Agent Consensus Architecture where every decision is challenged before execution.

Instead of one AI saying:

"Buy ETH now."

Multiple agents participate:

• Bull Agent searches for upside opportunities.

• Bear Agent identifies risks and bearish signals.

• Yield Agent evaluates DeFi yield strategies.

• Onchain Agent validates blockchain activity.

• Neutral Agent synthesizes all viewpoints.

• Execution Agent executes approved decisions.

This creates a robust investment committee rather than a single decision-maker.

System Architecture

Multi-Agent Consensus Layer

🐂 Bull Agent

Focuses on:

• Market momentum

• Growth opportunities

• Narrative strength

• Ecosystem expansion

Outputs:

• Buy proposals

• Allocation recommendations

• Bullish counterarguments

🐻 Bear Agent

Focuses on:

• Risk management

• Downside scenarios

• Macro uncertainty

• Market weakness

Outputs:

• Risk reports

• Position reduction suggestions

• Protective strategies

🌾 Yield Agent

Focuses on:

• DeFi opportunities

• Staking yields

• Lending protocols

• Stablecoin strategies

Outputs:

• Yield recommendations

• Capital efficiency reports

⛓️ Onchain Agent

Focuses on:

• Wallet activity

• Whale tracking

• Smart money flows

• Contract interactions

Outputs:

• Blockchain intelligence

• Security validations

• Onchain analytics

⚖️ Neutral Agent

Acts as committee chairperson.

Responsibilities:

• Reviews all agent opinions

• Resolves conflicts

• Creates final consensus report

• Produces execution recommendation

⚡ Execution Agent

Responsible for:

• Transaction preparation

• Delegation usage

• Relayer submission

• Execution monitoring

End-to-End Workflow

Step 1 — User Connects MetaMask

The user connects MetaMask and upgrades their account into a Smart Account using MetaMask Smart Accounts Kit.

Step 2 — Smart Account Creation

MetaMask creates:

• Smart Account

• Session Key

• Delegated permissions

This eliminates the need for exposing private keys.

Step 3 — ERC-7715 Permission Grant

The user grants controlled permissions:

Examples:

• Maximum daily spending limit

• Approved protocols

• Risk thresholds

• Trading constraints

The AI can never exceed these limits.

Step 4 — Agent Debate Begins

The investment committee receives a portfolio objective.

Example:

"Invest $1000 with Moderate Risk."

Agents begin debating possible actions.

Step 5 — x402 Premium Intelligence Access

When additional information is required:

• Agents autonomously pay for premium data.

• x402 payment flows are triggered.

• ERC-7710 delegated permissions authorize payment.

This allows agents to acquire premium intelligence without human intervention.

Step 6 — Consensus Formation

The Neutral Agent reviews:

• Bull recommendations

• Bear warnings

• Yield opportunities

• Onchain validation

A final committee decision is created.

Step 7 — Policy Validation

Before execution:

Sentinel Policy Manager verifies:

• Spending limits

• Approved tokens

• Risk thresholds

• Governance rules

No transaction can bypass policy enforcement.

Step 8 — 1Shot Relayer Execution

The approved transaction is submitted through the 1Shot Permissionless Relayer.

Benefits:

• Gas abstraction

• Stablecoin fee payments

• Simplified UX

• Automated execution

Step 9 — Blockchain Settlement

Execution occurs on Base Sepolia.

The Onchain Agent monitors:

• Transaction success

• Position updates

• Portfolio state

Hackathon Track Coverage

🏆 Best Agent

Sentinel AI directly addresses this track through its specialized AI committee.

Implemented Agents:

• Bull Agent

• Bear Agent

• Yield Agent

• Onchain Agent

• Neutral Agent

• Execution Agent

Each agent has a unique responsibility and contributes to final decision-making.

🏆 Best A2A Coordination

Sentinel AI is fundamentally an Agent-to-Agent coordination platform.

Implemented Features:

• Multi-agent debate system

• Shared context passing

• Consensus generation

• Execution handoff

• Delegation hierarchy

Agents communicate, challenge each other, and collaboratively arrive at decisions.

🏆 Best x402 + ERC-7710

Sentinel AI implements:

• MetaMask Smart Accounts

• ERC-7715 Advanced Permissions

• ERC-7710 Delegation

• x402 Payment Flows

Agents autonomously pay for premium intelligence using delegated permissions without requiring user intervention.

🏆 Best Use of Venice AI

Venice AI powers the reasoning layer.

Used For:

• Investment analysis

• Agent reasoning

• Debate generation

• Consensus support

• Portfolio intelligence

Venice AI acts as the cognitive engine behind the committee.

🏆 Best Use of 1Shot Permissionless Relayer

Sentinel AI integrates:

• 1Shot Public Relayer

• Gas abstraction

• Stablecoin fee payments

• Relayed execution

The Execution Agent submits approved transactions directly through the 1Shot infrastructure.

Smart Contract Infrastructure

All contracts are deployed on Base Sepolia.

SentinelPolicyManager

Address:

0x33491e1b1fbd9f1d757a0abd1a2930d189d4990e

Purpose:

• Policy enforcement

• Spending limits

• Risk validation

• Governance controls

Verification:

https://sepolia.basescan.org/address/0x33491e1b1fbd9f1d757a0abd1a2930d189d4990e

SentinelAgentRegistry

Address:

0xfc8c9aef0085cee0eeb4110c9e681ecd8c105930

Purpose:

• Agent authorization

• Session management

• Delegation validation

Verification:

https://sepolia.basescan.org/address/0xfc8c9aef0085cee0eeb4110c9e681ecd8c105930

SentinelExecutionVault

Address:

0x975839ce675306f2329c526f70c64d803828e9d9

Purpose:

• Treasury management

• Controlled execution

• Secure asset handling

Verification:

https://sepolia.basescan.org/address/0x975839ce675306f2329c526f70c64d803828e9d9

Technology Stack

Frontend

• Next.js

• React

• Tailwind CSS

• JavaScript

Backend

• Node.js

• Express.js

Blockchain

• MetaMask Smart Accounts Kit

• ERC-7715 Advanced Permissions

• ERC-7710 Delegation

• Solidity

• OpenZeppelin

• Base Sepolia

Payments

• x402 Protocol

• 1Shot Permissionless Relayer

AI Layer

• Venice AI

• Multi-Agent Consensus Engine

Future Vision

Sentinel AI represents a future where AI agents become first-class blockchain participants.

Future roadmap includes:

• Cross-chain execution

• DAO treasury management

• Institutional portfolio automation

• Multi-wallet coordination

• Autonomous hedge fund infrastructure

• Advanced agent economies powered by x402

Our goal is simple:

Move from human-operated portfolios to secure, permissioned, autonomous onchain investment committees.

Team

BROTHERHOOD

Rohan Kumar

• Solo Builder

• Web3 Developer

• AI Agent Architect

• Smart Account Integrator

Acknowledgements

Special thanks to:

• MetaMask Smart Accounts Team

• 1Shot API Team

• Venice AI Team

• HackQuest Team

for enabling the next generation of autonomous onchain applications.

Started with a simple question:

"Can autonomous agents safely manage capital without requiring users to surrender control?"

Over the course of the hackathon, Sentinel AI evolved from a basic portfolio automation concept into a full multi-agent investment committee.

Major milestones achieved:

• Designed a Multi-Agent Consensus Architecture
• Implemented Bull, Bear, Yield, Onchain, Neutral, and Execution Agents
• Integrated MetaMask Smart Accounts
• Implemented ERC-7715 Advanced Permissions
• Implemented ERC-7710 Redelegation Flows
• Built Smart Account Governance Dashboard
• Developed x402-powered Research Layer
• Integrated 1Shot Permissionless Relayer
• Designed and deployed three core smart contracts
• Deployed frontend MVP
• Published technical documentation and architecture diagrams
• Created social media content documenting the entire build journey

The project progressed from architecture design to a fully functional end-to-end prototype demonstrating autonomous agent coordination, secure permission management, and onchain execution.

Sentinel AI is currently a hackathon-stage prototype and is not actively raising funds.

The primary focus is validating autonomous multi-agent portfolio management using MetaMask Smart Accounts, ERC-7715 permissions, ERC-7710 redelegation, x402 payments, and permissionless execution infrastructure.

Future fundraising may be considered after validating product-market fit and expanding cross-chain execution capabilities.