# Crew\.ai

**Use Case Overview**

**Scenario**: Decentralized Hedge Fund Management\
**Key Components**:

* **CrewAI Agents**: Portfolio Strategist, Risk Auditor, Trade Executor
* **AgentGPT Modules**: Payment Router (ERC-4337), Autonomous Audit Trail, Fault Penalty System

***

#### **Architecture**

```mermaid
flowchart TB  
    subgraph Blockchain[AgentGPT Smart Layer]  
        SC1[Task Registry]  
        SC2[Payment Escrow]  
        SC3[Penalty Engine]  
    end  

    subgraph Crew[AI Task Force]  
        A1[Research Agent] -->|Proposal| A2[Execution Agent]  
        A2 -->|Proof| A3[Audit Agent]  
    end  

    Blockchain <-.->|Tx Verification| Crew  
    Crew <-.->|ERC-20 Streaming Payment| Blockchain  

    style SC3 fill:#f96,stroke:#333  
    style A2 fill:#9af,stroke:#333  
```

***

#### **1. Smart Contract Agent Binding**

**CrewAI Agent Registration (Solidity):**

```solidity
// contracts/AgentRegistry.sol  
pragma solidity ^0.8.25;  

contract CrewAgentNFT {  
    struct Agent {  
        address paymentAddress;  
        uint256 performanceBond;  
        bytes32 capabilityHash;  
    }  

    mapping(uint256 => Agent) public agents;  
    mapping(address => bool) private _authorizedControllers;  

    function registerAgent(  
        uint256 agentId,  
        bytes32 capabilityProof,  
        uint256 bondAmount  
    ) external payable {  
        require(msg.value == bondAmount, "Bond mismatch");  
        require(_authorizedControllers[msg.sender], "Unauthorized");  

        agents[agentId] = Agent({  
            paymentAddress: msg.sender,  
            performanceBond: bondAmount,  
            capabilityHash: capabilityProof  
        });  
    }  

    function slashBond(uint256 agentId) external onlyGovernance {  
        agents[agentId].performanceBond = 0;  
        payable(governanceTreasury).transfer(bondAmount);  
    }  
}  
```

***

#### **2. Workflow Automation Setup**

**Task Pipeline Configuration (YAML):**

```yaml
# crewai-integration.yaml  
agents:  
  - id: quant-model-v3  
    type: strategy  
    blockchain:  
      bond: 1.5 ETH  
      payment_rule:  
        stream: 0.00015 ETH/sec  
        completion_bonus: 0.3 ETH  
    performance_metrics:  
      - sharpe_ratio > 2.3  
      - max_drawdown < 15%  

workflows:  
  portfolio-rebalance:  
    trigger:  
      - temporal: "0 18 * * 1-5"  # Weekdays 6PM UTC  
      - onchain: "ETHVolatility > 45%"  
    steps:  
      - agent: quant-model-v3  
        task: generate_strategy  
        timeout: 1800s  
      - agent: exec-bot-v2  
        task: deploy_to_uniswap_v4  
        gas_policy: "optimistic_rollup"  
```

Deploy with:

```bash
agentgpt deploy-swarm --file crewai-integration.yaml --network arbitrum-one  
```

***

#### **3. Payment Streaming System**

**ERC-1337 Compliant Paymaster (Python):**

```python
from agentgpt.payments import StreamManager  
from web3 import Web3  

class PerformancePayer:  
    def __init__(self):  
        self.w3 = Web3(Web3.HTTPProvider(os.getenv("ARB_RPC")))  
        self.streams = StreamManager(paymaster_address=os.getenv("PAYMASTER"))  

    async def handle_payment(self, agent_id: str, metrics: dict):  
        if metrics["success"]:  
            await self.streams.create_stream(  
                receiver=agent_id,  
                token="0xERC20",  
                amount_sec=Web3.to_wei(0.00015, 'ether'),  
                duration=3600  
            )  
        else:  
            await self.streams.cancel_stream(agent_id)  
            self.penalty_engine.slash(agent_id, metrics["failure_reason"])  
```

***

#### **4. Autonomous Monitoring**

**Liveness Probe (Rust):**

```rust
// agentgpt-monitor/src/probes.rs  
pub async fn check_agent_liveness(  
    agent: Agent,  
    contract: &Contract<Http>  
) -> ProbeResult {  
    let last_heartbeat = contract  
        .method::<_, u64>("getLastActive", agent.id)?  
        .call()  
        .await?;  

    let current_block = contract.client().block_number().await?;  
    let max_missed_blocks = 15;  

    if current_block - last_heartbeat > max_missed_blocks {  
        Ok(ProbeResult::Unhealthy(  
            "Missed block heartbeat threshold".into()  
        ))  
    } else {  
        Ok(ProbeResult::Healthy)  
    }  
}  
```

***

#### **5. Security & Fault Recovery**

**Decentralized Kill Switch:**

```solidity
// contracts/Failsafe.sol  
pragma solidity ^0.8.25;  

contract AntiRugPull {  
    address[] private _watchdogs;  
    uint256 private _consensusThreshold = 4;  

    function triggerEmergencyStop(bytes32 taskHash) external {  
        require(isWatchdog(msg.sender), "Unauthorized");  
        uint256 confirmations;  

        for (uint256 i; i < _watchdogs.length; i++) {  
            if (_watchdogs[i] == msg.sender) {  
                confirmations++;  
            }  
        }  

        if (confirmations >= _consensusThreshold) {  
            _haltOperations(taskHash);  
            _distributePenalty();  
        }  
    }  

    function _haltOperations(bytes32 taskHash) internal {  
        // Force cancel all related streams  
    }  
}  
```

***

#### **6. Performance Analytics**

```bash
agentgpt monitor-swarm --format json | jq .  
```

**Sample Output**:

```json
{  
  "swarmId": "fund-mgmt-v4",  
  "uptime": "99.982%",  
  "economics": {  
    "totalPayments": "82.14 ETH",  
    "performanceFees": "12.3 ETH",  
    "slashingEvents": 2  
  },  
  "agents": [  
    {  
      "id": "quant-model-v3",  
      "sharpeRatio": 2.81,  
      "completionRate": "98.4%",  
      "paymentStream": "0x...:2400/sec"  
    }  
  ]  
}  
```

***

#### **Best Practices**

1. **Gas Optimization**:

```solidity
// Use ERC-6982 for compressed state proofs  
import "@agentgpt/erc6982/contracts/EfficientStorage.sol";  
```

2. **Decentralized Storage**:

```bash
agentgpt store-strategy --file strategy.tar.zst --network ipfs  
```

3. **Security Audits**:

```python
from slither import Slither  

def audit_contract(path: str):  
    slither = Slither(path)  
    return slither.run_checks()  
```

4. **Real-Time Monitoring**:

```bash
agentgpt watch --events Deposited,TaskCompleted,AgentSlashed  
```

***

#### **Troubleshooting**

| **Issue**               | **Recovery Protocol**                                  |
| ----------------------- | ------------------------------------------------------ |
| Gas price spikes        | Enable alt-MEMPOL routing via `--gas-router=flashbots` |
| Model consensus failure | Trigger fallback to `gpt-3.5-turbo-instruct`           |
| Smart contract upgrade  | Use `agentgpt upgrade --strategy time-locked`          |
| Oracle manipulation     | Switch verifiable ZK-proof oracles immediately         |


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