Mastra•3mo ago

Get threadId associated with agent memory

I have a workflow that calls an agent with memory, configured to generate a thread title.

How can I get access to the threadId automatically created for that agent once it's been used?

_roamin_•10/17/25, 10:39 PM

Hey @flippyhead ! The only way to do that at the moment is to create the thread beforehand, like this:

const newThread = await memory.createThread({
    resourceId: "user-123",
  })

// then use the new thread id to call the agent
const result = await agent.stream('...', {
  memory: {
    resource: "user-123",
    thread: newThread.id
  }
})

const newThread = await memory.createThread({
    resourceId: "user-123",
  })

// then use the new thread id to call the agent
const result = await agent.stream('...', {
  memory: {
    resource: "user-123",
    thread: newThread.id
  }
})

flippyheadOP•10/18/25, 2:47 PM

@Romain ok thanks. Consider this my vote for returning that value somewhere in the response

Get threadId associated with agent memory

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