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An AI agent builder for agents that do real work

Describe the job and the tools. Vibely builds the agent into an app: it decides what to do, uses your tools, and leaves the big decisions to a person.

Start building freeTry the example agent

Free plan, no credit card needed.

Vibely builds AI agents into apps: describe the job, and it writes an agent that chooses which of your app’s tools to use, reads each result and decides again until it can answer. The model runs through Vibely AI on your app’s server, with no API key, and actions wait for a person to approve.

Start from

Start from an agent that already works

Relay is a customer support agent for a sample shop, in the template gallery. Try it, then give it your own tools.

  • Four tools

    It looks up orders, searches the help centre before stating a policy, files refund requests and hands cases to a person.

  • A visible trace

    Beside the chat, every step shows why the agent chose a tool, the exact input it sent and the result that came back.

  • An inbox for people

    Refund requests and hand-offs land in an inbox where someone approves, declines or resolves them. Nothing is paid without approval.

  • Settings without code

    Add instructions, switch tools on and off, and change the refund window from the Agent page.

Try Relay or see the template and its source. The live preview runs a labelled demo planner, because it has no server to call a model from.

How to build an AI agent

The same four parts, whatever the agent does.

  • 01

    Name the job and the tools

    Say who the agent serves, what it may look up and what it may do. Each tool is a small function in your app.

  • 02

    Let the model choose

    Each step, the model picks one tool or replies. The app runs the tool and shows the model the result, up to a step limit.

  • 03

    Keep people in the loop

    Tools that move money or make promises file a request instead of acting, and a person approves it.

  • 04

    Publish it

    The agent ships with the app. The published app’s server gets its own Vibely AI key, so nothing to configure.

Built to be trusted with customers

  • The key and the rules stay on the server

    The model call runs in a server function. The browser sends only the conversation, capped in size, and never sees the key or the agent’s instructions.

  • Models without API keys

    Vibely AI gives the agent models from Google, OpenAI and Anthropic through one gateway, billed to your workspace credits.
    Vibely AI

  • Plain answers when something fails

    Out of credits, a usage limit or too many requests: the customer gets a clear message, never a broken page.

  • Your tools, your data

    Tools can read your own Supabase tables or connected apps such as HubSpot, Airtable and Google Sheets, and the whole agent is React and TypeScript you can read and take with you.
    Connectors

Free to start

A credit is Vibely’s unit of AI work. Each message is charged exactly for the model work it actually took — a small edit costs a fraction of a credit, a large build more — and publishing, hosting, previews and mobile builds use none.

  • Free

    $0, no credit card. Build the agent and publish it to a vibelyagent.com address; its model calls draw on your credits.
    Start building free

  • Pro

    Pro plan
    from $25/month (100 credits), or $21/month billed yearly. Adds custom domains, the Code view and the Supabase integration for tools over your own data.
    Compare plans

Frequently asked questions

An AI agent is a model that can act, not just answer. It is given tools, such as looking up an order or filing a request, and it decides which one to use, reads the result and decides again until the job is done. The template shows each of those steps as it happens.

No. The agent calls models through Vibely AI, with a key Vibely creates for each project and keeps on the app’s server. Models from Google, OpenAI and Anthropic are available, and usage is billed to your workspace credits.

Each step the agent takes is one model call, billed in credits for what it actually used. You can cap a workspace’s or a project’s AI spend in Settings, and if the credits run out the agent tells the customer plainly instead of failing. Credit prices are on the pricing page.

Only through the tools you give it, and only as far as each tool allows. In the template, the refund tool checks the order and the refund window and then files a request; nothing is paid until a person approves it in the inbox.

No. Those are hosted workflow tools that connect apps for you. Vibely builds the agent into an app you own as code: its tools, its screens and its rules are yours to read and change, and it publishes with the rest of the app.

Yes, the other way round. Agent integrations add an MCP server to your published web app, with one tool for each action the app already does, so people can use it from ChatGPT, Claude or Cursor.

Keep exploring

Build your first agent

Describe the job, give it tools, keep a person in the loop. Free to start, no credit card.

Start building freeTry the example agent