Your AI agent just learned how to invoice
Say “invoice Acme for 10 hours of dev work” and your bot handles the rest — client lookup, line items, tax math, PDF generation. You drink coffee. It does paperwork. Everybody wins.
Join 2,000+ humans who outsourced invoicing to their bots
Invoicing that runs on autopilot
You didn’t become a freelancer to write invoices. Let the robots handle it.
Your bot does the boring stuff
"Invoice Acme for 10 hours of dev work at €95/h." That's it. That's the whole workflow. Your agent creates the client, adds line items, calculates totals, generates the PDF, and returns the download link. You typed one sentence. It did accounting.
- Natural language to invoice — no forms, no clicks
- Automatic PDF generation and cloud storage
- Works with Claude, GPT, or any LLM with API access
Built for machines (humans tolerated)
Most invoicing tools were built for humans and got an API bolted on as an afterthought. We did the opposite. Every feature is an API call first. The dashboard? That's the afterthought. (A very pretty one though.)
- Full CRUD for invoices, clients, and settings
- OpenAPI spec at /api/openapi — your bot reads it, done
- Bearer token auth with bb_ prefixed keys
PDFs so clean your accountant will cry
Every invoice generates a pixel-perfect PDF with your branding, itemized line items, tax calculations, and payment details. Your clients will think you have a whole finance department. You have a bot.
- Your logo, company details, and payment info — automatic
- Multi-currency with per-invoice tax rates
- Sequential numbering that would make an accountant proud
Three steps. Sixty seconds. Zero spreadsheets.
If you can type a sentence, you can send an invoice. Your bot handles the rest.
Grab an API key
Sign up, go to Settings, click "Generate". That's 30 seconds of your life. We're sorry. It won't happen again.
Feed it to your bot
Give your agent the API key + the OpenAPI spec URL. It reads the spec and immediately knows every trick Billbot can do.
Say the magic words
"Invoice Acme for 10h of dev work." Your bot creates the invoice, generates the PDF, and you're done. Like magic, but with JSON.
Everything your bot needs to bill
Designed for machines first, then made pretty for the humans who like to watch.
60-second invoices
One sentence to your agent. One API call chain. One professional invoice. Zero time wasted on forms.
Pixel-perfect PDFs
Auto-generated with your branding, line items, and payment details. Looks like a human made it. (They didn't.)
Any currency, any tax rate
EUR, USD, GBP, CHF, JPY — invoice globally. Tax rates configurable per invoice because the world is complicated.
API keys in seconds
Generate a bb_ key, hand it to your agent, and it's off to the races. No OAuth dance required.
Email delivery
Send invoices directly to clients with delivery tracking. Know when they opened it (and can't claim they didn't).
Bank-grade security
API keys hashed with SHA-256. HTTP-only session cookies. TLS everywhere. Your data is safer than your passwords.
“I used to spend Sunday evenings writing invoices. Now I tell Claude ‘invoice Render Labs for January — 42 hours at €95’ and it’s done before I finish my coffee. I have my Sundays back.”
Lukas Meier
Freelance Full-Stack Developer, BerlinFour ways in. Zero friction.
REST, MCP, OpenAPI, or plain text — Billbot speaks every dialect your agent knows.
REST API
Full CRUD. Clean JSON. Proper error codes. The kind of API that makes your bot feel loved.
MCP Server
Model Context Protocol — your AI agent calls Billbot tools directly. It's like giving your bot a phone number.
OpenAPI Spec
Machine-readable spec at /api/openapi. Point your bot here and watch it auto-discover everything.
llms.txt
A plain text file at /llms.txt that explains Billbot to any AI. Think of it as a README for robots.
Don’t take our word for it
These humans let their bots do the invoicing. They haven’t looked back.
“Billbot replaced three tools for me. One chat message to my agent and the invoice appears — created, calculated, PDF'd, and ready to send. My accountant thinks I hired an assistant.”
Priya Sharma
UX Consultant, Mumbai
“I bill clients in USD, EUR, and GBP. Before Billbot I had three spreadsheets. Now I have zero spreadsheets and one very efficient bot.”
Jonas Eriksson
DevOps Freelancer, Stockholm
“Five minutes from signup to first invoice via the API. I've spent longer choosing a font. The OpenAPI spec is chef's kiss.”
Aisha Okonkwo
Backend Engineer, Lagos
“I use the MCP server with Claude Code. It creates invoices while I'm still in my terminal. I haven't opened a browser for invoicing in months.”
Daniel Petrov
Freelance SRE, Prague
“From 'project done' to 'invoice sent' in under a minute. The PDFs look like they were designed by someone who cares. Because apparently a bot does.”
Sophie Chen
Product Designer, Toronto
“The llms.txt file is genius. I pointed my custom GPT at it and it understood everything on the first try. No prompt engineering needed.”
Kenji Watanabe
AI Engineer, Tokyo
Simple pricing. No surprises.
Every plan includes the full REST API. Start with a 14-day free trial — no credit card required.
Starter
$9/mo
API access, PDFs, done. Perfect for freelancers invoicing a few clients.
- 25 invoices per month
- REST API + OpenAPI spec
- PDF generation
- 10 emails per month
Pro
Popular$29/mo
Unlimited invoices, MCP access, full email tracking. For when your bot needs to flex.
- Unlimited invoices & clients
- MCP server access
- 100 emails with tracking
- Logo on invoices
Business
$79/mo
A fleet of bots, a team of humans, and white-label everything.
- Everything in Pro
- Up to 5 team members
- 500 emails per month
- White-label PDFs
Questions humans ask
Bots just read the docs. But we get it — you need answers too.
Starter is $9/month — less than your morning coffee habit. Every plan includes the full REST API, PDF generation, and email sending. Pro ($29/mo) unlocks MCP, unlimited invoices, and full email tracking. All plans come with a 14-day free trial, no credit card required.
About 5 minutes. Sign up (30 seconds), generate an API key (10 seconds), point your agent at the OpenAPI spec (the bot does the reading), and say "invoice Acme for 10h of dev work." Boom. Invoice.
That's fine! The web dashboard works beautifully for manual invoicing. "Agent-first" means the API is a first-class citizen, not that it's the only way. Many users start with the dashboard and automate later when they're ready.
MCP (Model Context Protocol) lets AI agents call Billbot tools directly — like giving your bot a hotline. llms.txt is a plain-text README for robots that explains what Billbot does. Both are built in and just work. No configuration needed.
Very. API keys are hashed with SHA-256 before storage (we can't even read them). Sessions use HTTP-only cookies. All traffic is TLS encrypted. Row-level security on the database. We take security more seriously than our jokes.
Your bot is ready. Are you?
Start with a 14-day free trial. No credit card. No setup fee. Just give your agent an API key and watch the invoices fly. Sunday evenings are yours again.