Implementing Hybrid Voice + Text Input for Voice A...
# ❓・bug-reportu
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02/06/2026, 9:30 AMWe use a Retell AI voice agent workflow (question nodes, extract variable nodes, function nodes) in a Next.js app with RetellWebClient for web calls. Currently, users can only respond via voice. We want to allow users to type text answers in the same conversation while keeping the same voice agent workflow.
Questions:
How do we send a text message to an active web call? What API method/endpoint should we use?
How do we get the callId or conversationId from an active RetellWebClient web call?
Can a voice agent workflow accept text input mid-conversation, and will the extract variable nodes and question flow continue normally?
Please provide API documentation or code examples. Thank you.
https://cdn.discordapp.com/attachments/1469263931137720524/1469264893545939127/image.png?ex=69870710&is=6985b590&hm=f35a9c628a09e848224d6a3fe6636bee48fd3518a8ff9550bc8425054e02de51&
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02/06/2026, 1:31 PM@Shehroze -Support @Retell
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02/06/2026, 2:02 PMCan you give me advice?
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02/06/2026, 4:53 PM@Shehroze -Support @Retell
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Shehroze -Support @Retell
02/06/2026, 5:08 PMHi @!
Shehroze -Support @Retell
02/06/2026, 5:09 PMThe web call SDK is designed for voice-only interactions
Shehroze -Support @Retell
02/06/2026, 5:09 PMIf you need text-based interactions, Retell offers Chat Agents which work via API
Shehroze -Support @Retell
02/06/2026, 5:10 PMCreate Chat - Retell AI https://share.google/nmkvKBgbZohFtwdph
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02/06/2026, 5:25 PMI think this is only used for text chat agent.
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02/06/2026, 5:25 PMHow do we send a text message to an active web call?
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02/06/2026, 5:27 PMUsers want to chat with voice or text to agent. not only voice to voice, text to text
We want voice(agent) to voice+text(clients)