Prostir — Build the AI agent only you could build.

The problem

Your idea is simple. The execution is a mess.

The AI is the easy part. Everything between the prompt and a paying customer is the part nobody warned you about.

Phase 01 · The spark

It works in ChatGPT.

You poke at ChatGPT until it answers the way you would. You think: I could sell this. I could automate this. You are right. You just have no idea how.

Phase 02 · The wall

Why do I need a developer for this?

Every answer to "how" comes back the same. Auth. Payments. Hosting. Agents. APIs. MCP. The simple idea is suddenly a €15k quote and three months on someone else's calendar.

Phase 03 · The workaround

A Custom GPT that doesn't earn.

You settle for a Custom GPT inside ChatGPT. It works. It is also stuck there. You cannot charge for it. You cannot see who used it. You don't own it.

Stuck in ChatGPT
No payments
No customer data

The result

The stall. Maybe AI isn't for me.

The complexity wins. The idea sits in a Notion doc. Your customers keep asking the same questions. Your week looks exactly like last week.

Prostir handles the engineering. You handle the part only you can do.

De Prostir-manier

Custom AI agents. No code. Anywhere your people work.

Upload what only you have. Connect the tools you already pay for: Pay, HubSpot, Notion, Slack. Set a price, or share for free. One link that works wherever your customers already are. No code, no engineers, no agent headache.

Upload what only you have.

PDFs, websites, Notion docs, transcripts, voice samples, brand books, internal SOPs. Prostir reads everything and answers in your register, with your sources cited.

Connect the tools you already pay for.

Pay, HubSpot, Notion, Slack, and the others. Your agent does its work inside the tools your team and your customers already use.

Charge for it. Or don't.

Subscription, one-time, or pay-per-use. Pay is wired in from day one. You own every customer, every conversation, every receipt.

Hoe het werkt

From idea to live AI agent. One afternoon.

Stap 1

Start a new agent.

Name it. Describe what it does. Pick a starter template (customer support, course tutor, paid expert, internal helper) or start from a blank agent.

Klantsupport

Antwoord uit je docs

Cursuscoach

Lesgeven vanuit je cursus

Betaalde expert

Verkoop je expertise

SaaS guide

Walk users through your product

Internal team

Help your team work faster

Vanaf nul beginnen

Stap 2

Add what you know.

Upload PDFs, websites, Notion docs, transcripts, voice samples, your style guide. Prostir reads everything and answers your customers in your register, with sources cited.

Klik om te uploaden of sleep je bestand Markdown, text, PDF, DOCX, or CSV source

support-rules.md 2.4 MB

READY

product-faq.txt 12 sections indexed

READY

Stap 3

Tell it how to behave.

Plain-language rules. Always answer from approved sources. Never give legal advice. Recommend the Creator plan to teams over 10. Prostir handles the rest.

Systeeminstructies

 You are the support guide for this agent. Answer from approved knowledge first. Use tools only when needed. Strikte regels: Keep answers short. Always cite the source.
Run a knowledge search before product-specific advice.
Never share secrets or other customers' data.
  

Stap 4

Launch. Set a price. Track it all.

One link works in ChatGPT, Claude, your website, and your web dashboard. Price it, or share free. Payments, customers, and usage land in one dashboard.

Verdienmodel

Model Subscription ▾

Monthly price $29.00

Betaling via SPay · connected

Prostir Support Agent PRO

Kan deze agent antwoorden vanuit onze supportbestanden?

P

Yes - your knowledge is ready and your link is live.

Plan limits apply automatically.

View agent

Krijg vroege toegang

Cases

Real life examples people are building on Prostir

Each case walks through the inputs (files, prompts, tools), the build path (Claude Code, ChatGPT, or Studio), and what the published agent does. Read the closest match to your work, then build the one only you could build.

CASE // 01

An AI agent that writes in your voice, not the chatbot's

You've tried prompts. Screenshots of old posts. Custom GPTs. The voice still slips by the second paragraph. This agent reads five of your real posts and drafts the sixth the way you would, with the words you never use already missing from it.

Wat je publiceert Written in your voice

Gebouwd in built with Prostir agent in Claude

Read the case

Bring the idea. Prostir handles the engineering. Krijg vroege toegang

Onder de motorkap

Everything an AI agent needs. Already built.

Prostir handles the engineering. You handle the idea.

Knowledge

Your files become its brain.

Drop in PDFs, docs, websites, transcripts. Prostir reads everything and answers your customers from your sources, with citations.

Choose what is searchable, not every file needs to be.
Files index automatically, ready in minutes.
Each agent sees only its own knowledge.

Sources

support-rules.md Ready · 1.2 MB

product-faq.docx Ready · 450 KB

setup-notes.txt Processing

leads.csv Error

Test what it knows

How do refunds work?

Refund requests go through the support team review.

support-rules.md

Ask a question...

Billing

Plans and payments, built in.

Set what is free, what is paid, what each plan unlocks. Pay runs checkout, receipts, refunds, and limits.

Starter, Creator, and AI Creator Pro packages include agents, skills, and workflows.
Limits check before each call.
No surprises, no plumbing.

Plan rules

STStarter

$29/moSTRIPE

CRCreator

$99/moSTRIPE

BZBusiness

CustomSALES

Betaling ontvangen Starter plan unlocked

Distribution

One link, every AI client.

Your agent gets one stable link. Paste it into ChatGPT, Claude, Cursor, or your own site. Same setup, every channel. Sign-in rules travel with the link.

Works in ChatGPT, Claude, Cursor, and any AI client that follows MCP.
Each agent gets its own clean link.
Sign-in rules travel with the link automatically.

ChatGPT

Connect your AI agent Connected. What can I help with? Use knowledge

Claude

@Prostir docs According to your knowledge base, refund requests go through the support portal.

API client

Ask support agent Sign-in confirmed. Run knowledge search.

Operations

Sign-in, limits, access. Handled.

Prostir manages who can do what, who paid for what, and what each plan unlocks. Sensitive actions require owner approval. Live status, usage, and revenue in one dashboard.

Revoke access in one click.
Every user, every action, every dollar — one dashboard.
Push updates that don't break customers.
Export everything to CSV. Your customers, not ours.

Agents 5 / 5

Knowledge 100 MB used

Requests 100 today

Liveactiviteit

$
Betaling ontvangen Starter unlocked
Starter
M
Klant vroeg support-agent
1m ago
Q
Limieten gecontroleerd all good
ok

Tools

Connect anything. Stay in control.

Plug in Pay, HubSpot, Notion, Slack, and more. 20+ ready integrations. Custom ones via simple URL setup. Sandboxed actions. Secrets stay private.

20+ ready integrations. Custom ones via simple URL setup.
Sandboxed actions. Your agent does only what you allow.
Secrets stay private. Customer-facing tools stay clean.

Active Connected tool Live

connected Limits active

Vergelijking

The missing layer is the backend, not the prompt.

	Custom GPT	Build it yourself	Generic no-code agent	Prostir
Hosted MCP-endpoint	Nee	Zelf bouwen	Meestal niet	Inbegrepen
Kennis en resources	Beperkt	Zelf bouwen	Verschilt	Duidelijke modi
Externe API's als tools	Beperkt	Zelf bouwen	Per workflow	Via gateway
Gebruikers en auth	Platform-eigen	Zelf bouwen	Verschilt	Serverkant
Pay-betalingen	Nee	Zelf bouwen	Verschilt	Ingebouwd in agentplannen
Quota's	Nee	Zelf bouwen	Verschilt	Planbewust
Tenant-grenzen	Platform-eigen	Zelf bouwen	Verschilt	Serverkant
Preview-houding	Beschikbaar	Jouw project	Verschilt	Toegang aanvragen

Cases

Three real needs Prostir was built for.

These are not testimonials. These are the actual problems people came to Prostir to solve.

01 Betaalde expert

Weinig setup

Ik wil een betaalde AI-agent die mijn expertise draagt, koppelt met tools die ik al gebruik en geen developer vraagt.

02 Interne helper

Privé

Ik wil een private AI-agent voor het team. Die handelt vragen en taken af, bewaakt wie wat mag en vraagt geen setup van mijn kant.

03 Klanthelp

Klaar om te shippen

Ik wil een klantgerichte AI-agent , betaald via Pay, die ik kan shippen zonder apart engineeringproject.

FAQ

Questions, answered.

What people ask before they ship their first paid AI.

What is Prostir? Prostir is where non-technical creators build AI agents, share skills, and get paid — straight inside ChatGPT, Claude, Cursor, on your site, or in your own interface. Upload your knowledge, write the rules in plain English, set a price (or don't), get a link. Done. Lees

Do I need to understand "MCP" or "agents" or any of that? No. Those are the technical names for what's under the hood. We handle that. You upload knowledge, write rules, set a price. The engineering is our job. Lees

Do I need to know how to code? No. If you can write an email and drag a file, you can ship an AI on Prostir. Teams that want custom integrations add them through a simple URL setup — still no code. Lees

How is this different from a Custom GPT in ChatGPT? Custom GPTs only live inside ChatGPT and can't take money. Prostir AI agents live in ChatGPT, Claude, Cursor, your site, and your own interface — with payments, customer accounts, and a dashboard you actually own. The relationship is yours, not OpenAI's. Lees

How do customers actually use my AI? Three ways, and you can ship all three at once: in ChatGPT or Claude through your link, on your website as a chat widget, or inside your own interface as a help panel. All channels roll into one dashboard. Lees

Which AI clients does it work with? ChatGPT, Claude, Cursor, and any AI client that follows the MCP standard — including custom ones your team builds later. We give you copy-paste setup for each. Lees

Can I charge in my local currency? Yes. Pay handles 135+ currencies. Prostir routes the right one automatically. Lees

What happens to my knowledge? Is it private? Yes. Files are encrypted, used only to answer your customers, and never used to train AI models. Each AI sees only its own knowledge — no leaks between accounts. Delete everything in one click anytime. Lees

Can I try it without paying? Starter is the entry plan. You can request a 15-min walkthrough first to pick the plan that fits your launch. Lees

What happens to my customers if I cancel? Export every customer record, conversation, and payment to CSV anytime. We hold your data for 30 days after cancellation — plenty of time to migrate or come back. Lees

Can I plug in my CRM, Slack, or Notion? Yes. Ready-made connections to HubSpot, Notion, Slack, Calendly, Google Drive, Pay, and more. Custom ones via simple URL setup. Still no code. Lees

How fast can I really launch? First-time creators get a live link in about 17 minutes. If you want to fine-tune everything, give it an afternoon. Lees

Klaar om te lanceren?

One afternoon from idea to live link.

Upload what only you have. Write the rules in plain language. Open the link in ChatGPT, Claude, or your site. Ship the agent only you could ship.

Krijg vroege toegang Talk to sales

Need custom scale, white-label, or dedicated setup? Talk to sales.

Build the AI agent only you could build.