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Migration: AgentNetwork to .network() | Migration Guide

docs/src/content/en/guides/migrations/agentnetwork.mdx

2025-12-182.3 KB
Original Source

Migrate from AgentNetwork to .network()

As of v0.20.0 for @mastra/core, the following changes apply.

Upgrade from AI SDK v4 to v5

  • Bump all your model provider packages by a major version.

:::note

This will ensure that they're all v5 models now.

:::

Memory is required

  • Memory is now required for the agent network to function properly.

:::note

You must configure memory for the agent.

:::

Migration paths

If you were using the AgentNetwork primitive, you can replace the AgentNetwork with Agent.

Before:

typescript
import { AgentNetwork } from '@mastra/core/network'

const agent = new AgentNetwork({
  name: 'agent-network',
  agents: [agent1, agent2],
  tools: { tool1, tool2 },
  model: 'openai/gpt-5.4',
  instructions: 'You are a network agent that can help users with a variety of tasks.',
})

await agent.stream('Find me the weather in Tokyo.')

After:

typescript
import { Agent } from '@mastra/core/agent'
import { Memory } from '@mastra/memory'

const memory = new Memory()

const agent = new Agent({
  id: 'agent-network',
  name: 'agent-network',
  agents: { agent1, agent2 },
  tools: { tool1, tool2 },
  model: 'openai/gpt-5.4',
  instructions: 'You are a network agent that can help users with a variety of tasks.',
  memory,
})

await agent.network('Find me the weather in Tokyo.')

If you were using the NewAgentNetwork primitive, you can replace the NewAgentNetwork with Agent.

Before:

typescript
import { NewAgentNetwork } from '@mastra/core/network/vnext'

const agent = new NewAgentNetwork({
  id: 'agent-network',
  name: 'agent-network',
  agents: { agent1, agent2 },
  workflows: { workflow1 },
  tools: { tool1, tool2 },
  model: 'openai/gpt-5.4',
  instructions: 'You are a network agent that can help users with a variety of tasks.',
})

await agent.loop('Find me the weather in Tokyo.')

After:

typescript
import { Agent } from '@mastra/core/agent'
import { Memory } from '@mastra/memory'

const memory = new Memory()

const agent = new Agent({
  name: 'agent-network',
  agents: { agent1, agent2 },
  workflows: { workflow1 },
  tools: { tool1, tool2 },
  model: 'openai/gpt-5.4',
  instructions: 'You are a network agent that can help users with a variety of tasks.',
  memory,
})

await agent.network('Find me the weather in Tokyo.')