APIFleet

Give your
agent a voice.

Build, test, and deploy voice agents.
Connect real tools. See every conversation.

Start building Read the docs

Example conversation

Caller:Can I book a demo?00:00 Agent:Let me check availability.00:05 HTTP tool:check_availability00:08 Result:Tuesday, 10:0000:10 View call log00:12

From first hello
to deployment.

01

Configure your agent

Give it instructions, choose a voice and model, and connect the knowledge and tools it needs to help.

Create an assistant
02

Test the conversation

Talk to your agent in the browser. Run simulations, inspect the conversation, and refine how it responds before connecting a number.

Explore simulations
03

Connect your number

Bind a phone number to your assistant, configure your telephony provider, and follow the conversations in your call logs.

Read the setup guide

A conversation
you can follow.

The words are only half the story. Follow the tool calls and results behind the conversation, so you can understand what your agent did.

Illustrative transcript and timing.
This walkthrough doesn’t place a call.

Example conversationBrowser test
  1. 00:00
    Caller

    Can I book a demo?

  2. 00:05
    Agent

    Let me check availability.

  3. 00:08
    HTTP tool

    check_availability

    Your endpoint returns available times.
  4. 00:10
    Tool result

    Tuesday, 10:00

  5. 00:12
    Agent

    There’s a slot on Tuesday at 10:00.
    Would that work for you?

See your conversations in APIFleet

Your voice.
Your tools.
Your way of building.

Start in the dashboard or work directly with the API. The same assistants, configuration, and conversations are yours to build on.

Choose how it speaks.

Configure the voice, model, language, and instructions. Use a realtime model or choose the speech, language, and voice providers in a custom pipeline.

Give it something to do.

Connect HTTP tools to your own services. Look up an order, check a calendar, or bring the next step in your workflow into the conversation.

Keep your app in the loop.

Use API keys to manage assistants from your backend and webhooks to receive call events. Inspect recordings and transcripts in the dashboard.

Create an assistant
curl https://apifleet.dev/assistants \
  -X POST \
  -H "Authorization: Bearer $APIFLEET_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "name": "Demo concierge",
    "instructions": "Help callers explore our product.",
    "first_message": "Hi! What are you building?"
  }'

Create an API key in your workspace, then make it your own.

Explore the API

Before you
say hello.

What can I build with APIFleet?

Voice agents that answer questions, use your business tools, and handle conversations over the phone or in a browser test. You define the instructions, knowledge, and actions available to each assistant.

Can I test an agent before connecting a number?

Yes. Use browser testing to talk to your agent, or run simulations to exercise a conversation. You can inspect the results and adjust its configuration before connecting phone traffic.

Can it connect to my existing backend?

Yes. Attach HTTP tools to call your services, manage assistants through the API, and subscribe to call events with webhooks. The API documentation covers authentication and configuration.

Where do I create an account?

Start building opens your APIFleet workspace. Sign up with Google or an email link to create your workspace. APIFleet is the platform powering VoiceFleet.

Your next idea.
Its first hello.

Give it a voice. See where the conversation goes.

Start building