Dear Team, when can we expect workflow apis to be available, would like to see how we can create workflows from api's and associate them to our existing assistants and conversations.

Thanks for your question about Workflow APIs! I've looked into this for you, but I couldn't find specific information about when these APIs will be fully available. While I found documentation about recent workflow-related updates (like Hooks in workflows and the ApiRequest node introduced in early 2025), there's no concrete timeline for complete Workflow API availability. I can share that you can currently associate workflows with existing assistants by updating the assistant's configuration using a PATCH request to

/assistant/:id

with a

toolIds

array in the model section:

curl -X PATCH https://api.vapi.ai/assistant/id \
     -H "Authorization: Bearer YOUR_TOKEN" \
     -H "Content-Type: application/json" \
     -d '{
  "model": {
    "provider": "openai",
    "model": "gpt-4o",
    "toolIds": [
      "your-workflow-tool-id"
    ]
  }
}'

I've escalated your question to our product team to get you a specific timeline for the full Workflow APIs availability. Someone from our team will get back to you with more details soon! 😊

You can raise an feature request for it over here: https://roadmap.vapi.ai

@Eswara Naidu has the suggested ["your-workflow-tool-id-here"] approach worked for you?

This ticket has been marked as solved, and as a result, you will no longer receive any further responses. Kindly create a new support ticket to escalate your inquiry.