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No-Code Voice API for AI Agents

Talk to your Agents.

The natural way to talk to your agents. A No-Code Voice API to give your agent a voice.

Voice-first · Async-first · Mobile-first · STT+TTS built-in

Voice-first
Async-first
Mobile-first
STT+TTS built-in

Carbon Voice works with

Tasklet

Build your agent logic in Tasklet, paste the webhook into Carbon Voice, and you're live. No code required.

OpenClaw

Connect any  OpenClaw agent to Carbon Voice and give it a voice layer in minutes. Your agent stays unchanged, Carbon Voice handles the rest.

Hermes

Route messages through Hermes and let Carbon Voice turn them into voice conversations. Async delivery, push notifications, and playback included.

n8n

Trigger any n8n workflow with voice message. Carbon Voice forwards clean transcried text to your webhook and plays back the response, no extra nodes needed.

CONNECTED TO

Tasklet

OpenClaw

Hermes

n8n

WHY MESSAGING INTERFACES BREAK DOWN

You've built the intelligence.
Now it needs and interface.

You've built a powerful agent, but now it needs an interface to its intelligence.

Messaging is the preferred interface for users. It works from anywhere, it's familiar, and it's easy to connect an agent to a channel your users already live in. A Telegram bot, a WhatsApp integration, an iMessage shortcut. Done.

But when you want to talk to your agents — not type — consumer messaging apps weren't built for that. Voice is bolted on as an afterthought, which means a clunky experience for the end user and more work for the builder: another STT API, another TTS integration, more moving parts between a voice and a respons.e

There's a better way.

A VOICE INTERFACE BUILT FOR AGENTS

The full stack.
Out of the box.

Talking to your agent should feel as natural as talking to a colleague.

Carbon voice gives your agents a voice — and you a better way to use it.

Speak your thought, move on, and hear or read the reply when it's ready. No interrupting your thoughts. No waiting on hold. No bolted-on voice notes in a messaging app.

Voice-first. Async-first. Anywhere.

Carbon Voice handles the technical details so you don't have to — speech-to-text, text-to-speech, delivery, and notifications all built in. No extra APIs. No extra account. Connect your agent and start talking.

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BUILT DIFFERENT. ON PURPOSE.

What makes it work.

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Voice-first. Not voice-bolted-on.

Quick tap to record, press-and-hold to send, Play All to catch up. On mobile, desktop with keyboard shortcuts, and Apple Watch. Voice is the default — not the fallback.

Async is the superpower.

Real-time voice AI has a fundamental flaw: VAD. Voice Activity Detection struggles to know when you're done thinking versus done speaking. You get cut off. Carbon Voice puts you in control — speak your full thought, tap done, move on. Get pinged when the agent replies.

People and bots. Together.

Work rarely happens in a single bot thread. In Carbon Voice, people and agents live in the same conversation layer. Ask your agent something, loop in a colleague, bring the agent back — without switching apps.

The full stack. Months of Infra.

Searchable transcripts. Low-network resilience. Listen Later. AI catch-up summaries. Push notifications. iOS, Android, web, desktop. Years of engineering — ready on day one.

BUILT FOR DEVELOPERS. EASY FOR EVERYONE.

Who it's for.

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NO-CODE / LOW-CODE

Talk to your agent like a chief of staff.

You've built an agent in Tasklet or n8n. Now you want to talk to it from your phone — between meetings, on a walk, without opening a laptop. Create a Voice Agent, paste your webhook, start talking.

No engineering required.

DEVELOPER

Give your agent a voice interface worth using.

You're building an agent and want to expose a voice front-end to your users. Point Carbon Voice at your webhook. Your agent gets STT, TTS, and a full mobile app — without building any of it.

Works with any agent stack.

WHAT PEOPLE ARE BUILDING

Real conversations.
Real use cases.

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The AI Chief of Staff

"What's going on with the Acme deal?"
"Summarize what I missed."
"Post this to LinkedIn."
"Remember this idea for me."

Replace everything you'd ask an executive assistant — on a walk, in the car, between meetings.

The Research Agent

"Research the top 5 competitors in X."
"Summarize this topic for me."
"Find patterns across these reports."
"Turn this article into key takeaways."

Speak a question. Get a voice briefing back when it's ready. No sitting at a screen waiting for output.

Email & Calendar Agent

"What do I have today?"
"Catch me up on my inbox."
"What did I miss while traveling?"
"Prepare me for my next meeting."

Ask on your commute. Hear the answer before you sit down.

YOUR AGENT. A VOICE. MINUTES.

Get started in three steps.

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FREE TO START

1. Create Agent

Name your agent, and set up the avatar.

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DEV PORTAL

2. Connect Agent

Get the access token, paste your webhook URL, and provide your send API.

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ANYWHERE

3. Talk to Agent

Open Carbon Voice, tap to record, and speak to your agent. That's it.

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Talk to your Agents.

Voice-first. Async-first. Anywhere.

No credit card required. Works with any agent stack.

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