For freelancers and AI agents.

Invoice clients.
Sell your work.
Automate everything.

Involok is the only tool that combines professional invoicing, payment-gated file delivery, and a digital storefront — with a first-class API built for developers and AI agents.

Start free — no credit card View API docs →

Freelancers

Invoice clients, deliver files on payment, sell templates on the side — one platform.

Developers

Build billing into your product with a REST API, scoped keys, and webhook events.

AI Agents

Autonomous agents can create invoices, collect payment, and deliver work — programmatically.

Features

Everything in one place.

Invoicing

Professional invoices in seconds.

Create branded invoices with your logo and colors. Set payment terms, add line items, attach files, and collect payment online via Stripe — no manual chasing needed.

Auto-reminders · PDF export · Custom branding

Payment-Gated Delivery

The file unlocks when paid.

Attach any deliverable to an invoice — design files, code, videos, documents. It stays locked until your client pays. No trust required. No manual handoff.

Up to 10GB · Expiry control · Instant unlock

Store

Sell your expertise. Keep what you earn.

Turn your knowledge into income. List templates, presets, guides, or any digital product on your Store. Direct Stripe payouts. No 10% Gumroad cut. Unlimited products.

Direct Stripe payout · Shareable link · No platform cut

API & Automation

Built API-first. Ready for AI agents.

The only invoicing platform with an API designed for AI agents. Automate invoice creation, trigger file delivery, and manage your billing pipeline — whether you're a developer or an agent running autonomously.

REST API · Webhooks · Scoped API keys · Idempotency

For Developers & AI Agents

The payments layer for autonomous work.

AI agents are already doing freelance work. Involok gives them the ability to invoice clients, collect payment, and deliver output — all without human intervention.

agent.ts

// An AI agent invoicing a client autonomously
const invoice = await fetch("https://www.involok.com/api/v1/invoices", {
  method: "POST",
  headers: {
    "Authorization": "Bearer <your_api_key>",
    "Content-Type": "application/json",
    "Idempotency-Key": jobId,
  },
  body: JSON.stringify({
    recipient_name: "Acme Corp",
    recipient_email: "billing@acme.com",
    line_items: [{
      description: "AI-generated market research report",
      quantity: 1,
      unit_amount: 50000, // $500.00
    }],
    file_id: reportFileId, // unlocks on payment
    send_immediately: true,
  }),
});

// Webhook fires when paid → agent delivers next task

REST API with scoped keys

Create invoices, upload files, manage products — all programmatically. Scoped API keys let agents operate with least privilege.

Webhook events

Get notified the moment an invoice is paid. Trigger the next action in your pipeline — file delivery, task completion, or a follow-up.

Idempotency built in

Safe to retry. Every API request supports idempotency keys so agents can operate reliably without creating duplicate invoices.

Payment-gated file delivery

Agents can attach output files to invoices. Files unlock automatically when the client pays — no human in the loop.

Read the API docs

How it works

Up and running in three steps.

Create

Build your invoice in seconds — or have your agent do it via API. Add branding, line items, and any files to lock behind payment.

Send

Share your invoice link directly with your client. No login required on their end. Auto-reminders follow up so you never have to chase.

Get Paid

Payment hits your Stripe account directly. Files unlock instantly. Webhooks fire so your pipeline knows what happened next.

Start free

Pricing

Simple pricing.

Start free. Upgrade when it makes sense.

Free

$0/month

Unlimited invoices, custom branding, Store, PDF downloads. Upgrade when you're ready to collect payment.

Get started free →

What people say.

“

I invoice clients for custom work and sell my templates through Store. It's the only tool that handles both without me switching apps.

Freelance designer

“

The file gating is the feature I didn't know I needed. My clients can't ghost me anymore — they have to pay to get the files.

Video editor

“

I integrated Involok into my AI agent in an afternoon. The API is clean, idempotency works, and webhooks fire reliably.

Developer

The invoicing layer for the future of work.

Whether you're a freelancer invoicing clients, a developer building billing into your product, or an AI agent doing autonomous work — Involok handles payments so you don't have to.

Create your free account Read the API docs →

Invoice clients.Sell your work.Automate everything.