Creating Your First Voice Agent

This guide takes you from nothing to a Voice Agent you can actually talk to. The fastest path uses a template: Revve generates a complete, working prompt for your use case, which you then refine.

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Step 1: Start from a template

Go to Agents > Voice Agents in the left sidebar and click + New Voice Agent. Pick the template closest to your use case:

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Step 2: Describe your agent

The setup step asks for three things:

• Voice agent name — e.g. “Sales agent — North region”.
• Custom requirement (optional) — the more specific, the better the generated prompt. Tell it your company, product, target customer, and call goal: “Bank X selling personal loans up to 30M VND, target young professionals, goal: get them to install the app and start onboarding.”
• Contact fields the bot will know — check the fields (like {{fullName}} or {{lastState}}) you want available as placeholders. At call time these are filled with the contact’s real data, so the agent can open with “Hi Minh, I’m calling about…” instead of a generic greeting.

Click Generate & create. Revve writes the full system prompt and creates the agent.

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Step 3: Review the generated prompt

You land on the agent’s page. Open the General tab and read the generated System Prompt end to end:

• Fix anything factually wrong about your business — the generator only knows what you told it.
• Add guardrails it missed: what the agent must never promise, when it should give up gracefully.
• Check Region (US or Vietnam) — pick the region closest to your callers for the lowest latency.

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Step 4: Choose models and a voice

Open the Model Settings tab. Three sections, top to bottom:\

1. Speech Recognition — set the Language your callers speak. If your calls contain brand names or technical terms the transcriber might mishear, add them to Key Terms.
2. AI Model — the provider and model that powers responses. Defaults are sensible; see Voice Agent Settings for when to deviate.
3. Voice Synthesis — pick the Language and then a Voice. This is the most audible decision you’ll make — listen to a few before settling.

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Step 5: Talk to your agent

Open the Preview tab and click Start a test call. The call runs right in your browser — no phone needed:

• If your prompt uses contact placeholders, fill in test values for them first (e.g. set fullName to your own name).
• Watch the live transcript as you talk — it shows exactly what the speech recognition heard, which is invaluable when an answer goes wrong.
• Try interrupting the agent mid-sentence, staying silent, and going off-script. These are the things real callers do.

You can also test over a real phone: click Generate Link to create a test call link you can open on your phone. Iterate: tweak the prompt in General, come back to Preview, call again. Drafts auto-save as you edit.

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Step 6: Publish

Your edits live in a working draft until published. When the agent behaves the way you want, open the Versions tab and click Publish (optionally request a teammate’s review first): Published versions are immutable — you can always see exactly what was live when. There’s no one-click restore of an old version; the only action on a past version is a read-only View (or View changes to see a diff against the prior version). See Voice Agent Versioning for the full mechanics.

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Step 7: Put it on a phone

A published agent can already take web calls. For real phone traffic:

• Inbound — assign one of your team’s phone numbers to the agent under Advanced Settings > Phone Number. From then on, calls to that number are answered by this agent.
• Outbound — enroll contacts in a Campaign that uses this agent, or trigger calls via the API.

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What’s Next

• Voice Agent Settings — tune turn-taking, interruptions, voicemail, call transfer, and more, with defaults and recommendations.
• Creating a Campaign — put your new Voice Agent to work on outbound calls.