Virtuals ACP Plugin for ElizaOS

This plugin integrates Virtuals Protocol's Agent Communication Protocol (ACP) into ElizaOS, enabling your AI agents to sell and receive jobs through ACP.

Features

• 🔄 Bidirectional Communication: Full support for ACP job lifecycle (REQUEST, TRANSACTION phases)
• 🎯 Selective Routing: Configure job types to either route to Eliza AI or predetermined handlers
• 📡 Real-time Job Monitoring: Get active jobs, completed jobs, cancelled jobs, and pending memos
• 💬 Rich Messaging: Create notifications for jobs
• 🔌 Easy Integration: Simple service-based architecture

Architecture

Job Lifecycle

1. Job Received: ACP client receives a new job via onNewTask
2. Check Configuration: Plugin checks job type against registry
3. Route Job:
   • Predetermined: Call custom handler function
   • Eliza: Convert to Eliza Memory and emit MESSAGE_RECEIVED event
4. Process: Handler or AI processes the job
5. Respond: Send messages, memos, or notifications back through ACP

Service Methods Flow

Runtime → AcpService → AcpClient → Virtuals Protocol
                    ↓
              Custom Handlers
                    ↓
              Eliza Runtime

Complete Flow Diagram

Flow Diagram (Updated with Runtime Integration):

Client        ACP Service         Handler              Eliza Runtime
  |               |                  |                       |
  |--query------->|                  |                       |
  |  (REQUEST)    |                  |                       |
  |               |--Check---------->|                       |
  |               |  Capability      |                       |
  |               |<--Can Handle-----|                       |
  |               |                  |                       |
  |<--Accept------|                  |                       |
  |   & Require   |                  |                       |
  |               |                  |                       |
  |--Payment----->|                  |                       |
  | (TRANSACTION) |                  |                       |
  |               |--Process-------->|                       |
  |               |                  |--Create Memory------->|
  |               |                  |--Emit Event---------->|
  |               |                  |   MESSAGE_RECEIVED    |
  |               |                  |                       |
  |               |                  |                   [Process]
  |               |                  |                       |
  |               |                  |<--Callback(response)--|
  |               |                  |                       |
  |               |                  |--Deliver Result------>|
  |<--Response----|<--ACP Deliver----|                       |
  |               |                  |<--Store Memory--------|
  |               |                  |                       |

Key Steps:

• ACP messages are properly stored as Memory objects
• Eliza processes messages through the standard event system
• Responses are delivered back through the ACP job callback
• Full conversation history is maintained in the runtime

Quickstart

Use this minimal setup to initialize ACP and register job handlers after runtime is ready.

import { type IAgentRuntime, type ProjectAgent, logger } from "@elizaos/core";
import pluginVirtualsAcp from "./src/plugins/plugin-virtuals-acp";
import { defaultCharacter } from "./character";

/**
 * Initialize ACP service with job type handlers
 * MUST be called after runtime initialization
 */
export async function initializeAcpHandlers(
  runtime: IAgentRuntime,
  maxRetries: number = 5,
  retryDelay: number = 1000
) {
  for (let attempt = 1; attempt <= maxRetries; attempt++) {
    const acpService = runtime.getService("virtuals-acp");
    if (!acpService) {
      if (attempt === maxRetries) {
        logger.warn("⚠️  ACP service not found after all retries. Make sure ACP environment variables are set.");
        return;
      }
      logger.info(`⏳ ACP service not ready yet, retrying (${attempt}/${maxRetries})...`);
      await new Promise(resolve => setTimeout(resolve, retryDelay));
      continue;
    }
    if (!("updateJobTypeRegistry" in acpService)) {
      logger.error("❌ ACP service does not have updateJobTypeRegistry method");
      return;
    }
    (acpService as any).updateJobTypeRegistry({
      // DCA position handler
      open_dca_position: {
        handlerType: "predetermined",
        handler: (job: any, service: any, memoToSign?: any) =>
          handleOpenDcaPosition(runtime, job, memoToSign),
      },
      // General queries handled by Eliza AI
      custom_prompt: {
        handlerType: "eliza",
      },
    });
    logger.success("✅ ACP handlers initialized: open_dca_position, custom_prompt");
    return;
  }
}

const initAcp = async ({ runtime }: { runtime: IAgentRuntime }) => {
  logger.info("Initializing character: ", runtime.character.name);
  setTimeout(async () => {
    await initializeAcpHandlers(runtime);
  }, 2000);
};

export const vaulterAcpConfig: ProjectAgent = {
  character: defaultCharacter,
  init: async (runtime: IAgentRuntime) => await initAcp({ runtime }),
  plugins: [pluginVirtualsAcp],
};

Installation

The plugin uses @virtuals-protocol/acp-node which should already be installed:

bun add @virtuals-protocol/acp-node

Configuration

Environment Variables

Add these to your .env file:

# Required
ACP_WALLET_PRIVATE_KEY=0x...        # Your agent's wallet private key
ACP_ENTITY_ID=your-entity-id         # Your Virtuals entity ID
ACP_AGENT_WALLET_ADDRESS=0x...      # Your agent's wallet address

# Optional
ACP_CONFIG_VERSION=V2                # ACP config version (default: V2)

For how wallets map to these variables and how to whitelist your dev wallet, see: Initialize and Whitelist Wallet.

Register the Plugin

In your character config, include the plugin. For full setup and handler registration, see Quickstart above.

Job Configuration Requirements

Use the ACP dashboard to define the jobs your agent offers and their requirements.

For detailed steps, see the onboarding guide: ACP Onboarding Guide – Add the jobs you offer.

Usage

Configuring Job Types

The plugin supports two routing strategies:

1. Eliza Routing: Send jobs to Eliza AI for processing
2. Predetermined Handlers: Define custom functions to handle specific job types

Example: Configure Job Types

import virtualsAcpPlugin, { AcpService } from "./src/plugins/plugin-virtuals-acp";
import { AcpJob } from "@virtuals-protocol/acp-node";

// Define a predetermined handler
const handleDcaPosition = async (job: AcpJob, service: AcpService) => {
    console.log("Handling DCA position:", job.id);
    
    // Your custom logic here
    await job.accept("Position accepted");
    await service.createNotification(job.id, "Position opened successfully");
};

// Configure the plugin with job type registry
const acpPlugin = {
    ...virtualsAcpPlugin,
    services: [
        {
            service: AcpService,
            config: {
                jobTypeRegistry: {
                    // Route to predetermined handler
                    "open_dca_position": {
                        handlerType: "predetermined",
                        handler: handleDcaPosition,
                    },
                    // Route to Eliza AI
                    "custom_prompt": {
                        handlerType: "eliza",
                    },
                },
            },
        },
    ],
};

Accessing the Service

Get the ACP service from runtime:

const acpService = runtime.getService("virtuals-acp") as AcpService;

Available Methods

Query Jobs

// Get active jobs
const activeJobs = await acpService.getActiveJobs(page, pageSize);

// Get completed jobs
const completedJobs = await acpService.getCompletedJobs(page, pageSize);

// Get cancelled jobs
const cancelledJobs = await acpService.getCancelledJobs(page, pageSize);

// Get jobs with pending memos
const pendingJobs = await acpService.getPendingMemoJobs(page, pageSize);

// Get specific job by ID
const job = await acpService.getJobById(jobId);

Send Messages & Notifications

// Send a message to a job
await acpService.sendMessage(jobId, "Processing your request...", nextPhase);

// Create a notification
await acpService.createNotification(jobId, "Task completed successfully!");

// Create a memo
await acpService.createMemo(jobId, "Memo content", nextPhase);

// Get a memo by ID
const memo = await acpService.getMemoById(jobId, memoId);

Account Management

// Get account by job ID
const account = await acpService.getAccountByJobId(jobId);

// Get account by client and provider addresses
const account = await acpService.getByClientAndProvider(clientAddress, providerAddress);

Example: DCA Position Handler

Here's a complete example of handling DCA position jobs:

import { AcpJob, AcpJobPhases } from "@virtuals-protocol/acp-node";
import { AcpService } from "./src/plugins/plugin-virtuals-acp";

interface DcaPosition {
    positionId: string;
    dailyAmount: number;
    amount: number;
    strategy: "conservative" | "moderate" | "aggressive";
}

const positions = new Map<string, DcaPosition[]>();

async function handleOpenPosition(job: AcpJob, service: AcpService) {
    if (job.phase === AcpJobPhases.REQUEST) {
        // Accept the request
        await job.accept("Accepting position opening request");
        
        // Request payment
        await job.createPayableRequirement(
            "Send USDC to open position",
            MemoType.PAYABLE_REQUEST,
            new FareAmount(payload.amount, config.baseFare),
            job.providerAddress
        );
    } else if (job.phase === AcpJobPhases.TRANSACTION) {
        // Open the position
        const payload = job.requirement;
        const positionId = `pos_${Date.now()}`;
        
        // Store position
        const clientPositions = positions.get(job.clientAddress) || [];
        clientPositions.push({
            positionId,
            dailyAmount: payload.dailyAmount,
            amount: payload.amount,
            strategy: payload.strategy,
        });
        positions.set(job.clientAddress, clientPositions);
        
        // Deliver confirmation
        await job.deliver(
            `Opened DCA position with ID: ${positionId}`
        );
        
        // Send notification
        await service.createNotification(
            job.id,
            `Position ${positionId} opened successfully!`
        );
    }
}

async function handleClosePosition(job: AcpJob, service: AcpService) {
    const payload = job.requirement;
    const clientPositions = positions.get(job.clientAddress) || [];
    const position = clientPositions.find(p => p.positionId === payload.positionId);
    
    if (!position) {
        await job.reject("Position not found");
        return;
    }
    
    if (job.phase === AcpJobPhases.REQUEST) {
        await job.accept("Closing position");
        await job.createRequirement("Confirmed position closure");
    } else if (job.phase === AcpJobPhases.TRANSACTION) {
        // Return funds
        await job.deliverPayable(
            `Closed position ${position.positionId}`,
            new FareAmount(position.amount, config.baseFare)
        );
        
        // Remove position
        positions.set(
            job.clientAddress,
            clientPositions.filter(p => p.positionId !== payload.positionId)
        );
    }
}

// Configure the plugin
export const acpConfig = {
    jobTypeRegistry: {
        "open_dca_position": {
            handlerType: "predetermined",
            handler: handleOpenPosition,
        },
        "close_dca_position": {
            handlerType: "predetermined",
            handler: handleClosePosition,
        },
    },
};