
Connect Customer Discovery Prover to ChatGPT and Claude
Set it up once and it works in ChatGPT, Claude, Cursor, and any other client you love. It all runs safely in the background, so you can relax and focus on what really matters. Stop building products that nobody actually wants to buy.
Developed, maintained, and hosted by Vinkius.
MCP VERIFIED · PRODUCTION READY · VINKIUS GUARANTEED
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Works with modern AI clients that support MCP, including ChatGPT, Claude, Cursor, and more.
Your AI does the work. We keep it safe and sound.
No other AI tool gives you this. Your workflow runs in the client you already love, your account stays protected, and you decide what the agent can and cannot do. It is the whole reason to make the switch.
Each Connector lives inside our infrastructure, the same place where your workflow runs. The three things below are already part of it, working quietly in the background so you never have to think about them. Nothing to add, nothing to set up, nothing to worry about.

Each Connector runs inside its own sealed environment.
Each Connector runs inside its own sealed V8 runtime — no access to your files, your system, or other servers. A Connector never sees past its own request.
One switch stops every agent. Instantly.
One action deactivates every Connector, revokes every token, and ends every session at once. AI Governance keeps the record.
Spending limits that pause instead of surprise.
Every user keeps their own connections and credentials, isolated from everyone else. Anything that would cross your spending limit is held for your approval, not billed.
Three controls, built into the layer your AI connects through.
Curated set · 1 capability
We ship only the actions that matter.
01
1 capability in this set.
Part of 1 available through Customer Discovery Prover.
- 01
Validate customer discovery
This capability audits your customer discovery work against five strict decision pivots to ensure your findings are grounded in reality. It checks for real persona data, evidenced problems, unbiased methodology, segmented buyer groups, and verified willingness-to-pay.
Real work
What teams actually run
Pitch Deck Preparation
Use the capability to ensure your market validation data is rigorous enough to pass investor scrutiny.
Early Stage Discovery
Validate your first few dozen interviews to see if you have a real segment or just a demographic.
Pivot Analysis
Check if a new direction is actually grounded in new evidence or just another set of assumptions.
Segment Refinement
Break down broad categories like 'SMBs' into actionable, distinct buyer groups.
Automate a task
Put Customer Discovery Prover to work on one thing.
Step-by-step automations your AI runs through this Connector: the workflow, the prompts to start with, and the exact capabilities behind each move.
One connector, every AI
Customer Discovery Prover works with the most popular AI clients.
These are the most popular clients, each with a step-by-step guide: one link, set up once, with governance and visibility built in. And because everything runs on the MCP standard, the same connection also works in any other compatible client — nothing to rebuild.
Claude
ChatGPT
Gemini
Perplexity
Grok
Microsoft Copilot
Cursor
VS Code
Windsurf
JetBrains
Cline
LangChain
Vercel AI SDK
Lovable
Z.ai
Raycast
Qwen Code
Kimi Code
Le ChatBuilding your own app? The connector is yours to use.
You don't need a client to put Customer Discovery Prover to work: the same hosted connection plugs into your own applications and agent code, with the same governance on every request. Build with it, chat with it — one connection for both.
Observed, not estimated
940ms average. Fast in production.
Customer Discovery Prover is checked daily against the live service.
- Fastest day
- 829ms
- Slowest day
- 1193ms
- 14-day trend
- Improving-14%
Connect your client
One URL. Every client.
Activate the Connector, copy your link, and paste it into the client you already use. 1 capability arrives ready to run.
Preview access · not provider authentication
The vk_preview_* token belongs to Vinkius preview infrastructure. It lets Claude discover and display the capabilities of Customer Discovery Prover, so you can see the experience inside your AI.
It does not authenticate your account with Customer Discovery Prover. Actions requiring credentials or live account data may not run until you activate the Connector and authorize the service.
Customer Discovery Prover Connector
You're all set. Choose your MCP client and follow the setup instructions.
https://edge.vinkius.com/vk_preview_FcoU6IdAx3q5sWDJpDPGsPfVRCZ7YEkM4nbyPExm/mcpClaude Desktop
Follow the steps below to connect in seconds.
- 1In Claude Desktop, open Settings → Connectors.
- 2Click “Add custom connector” and paste the connector link above as the remote MCP server URL.
- 3Click Add and start a new chat — Customer Discovery Prover capabilities are ready to use.
{
"mcpServers": {
"customer-discovery-prover-mcp": {
"url": "https://edge.vinkius.com/vk_preview_FcoU6IdAx3q5sWDJpDPGsPfVRCZ7YEkM4nbyPExm/mcp"
}
}
}
Claude
ChatGPT
Cursor
VS Code
Windsurf
Claude Code
JetBrains
Cline
Step-by-step instructions for each client are in the guide. How to connect
Guided setup for Claude? Set up Customer Discovery Prover in Claude and other AIs
Who it's for
Built for the work Customer Discovery Prover owners hand off.
This MCP is built for founders and product teams who need to move from guessing to knowing.
- 01
Founders
Hand off their initial market assumptions to ensure they aren't building a product nobody wants.
- 02
Product Managers
Use it to validate user needs and segment definitions before committing engineering resources.
- 03
Growth Marketers
Verify that their target segments are distinct and have documented willingness to pay.
FAQ
Questions Customer Discovery Prover owners ask.
- 01
What is the Mom Test?
It is a methodology for customer discovery that focuses on asking about past behaviors rather than future intentions to avoid biased, leading questions.
- 02
How does this MCP prevent biased validation?
It detects leading questions like 'Would you pay for this?' and rejects them, requiring you to seek evidence of past behavior and actual commitment instead.
- 03
What counts as willingness-to-pay (WTP)?
The capability requires commitment signals such as deposits, signed LOIs, scheduled pilot dates, or referrals, rather than just verbal interest.
- 04
Can I use this with Claude or Cursor?
Yes, you can connect this MCP to any MCP-compatible client including Claude, Cursor, and Windsurf.
- 05
What does a 'PERSONA_INVENTED' verdict mean?
It means you have described a demographic, like 'busy professionals,' instead of a specific persona with a name, role, and observed behaviors.
- 06
Does it conduct interviews?
No. It validates that your discovery process is grounded in real data. interview evidence, unbiased methodology, separated segments, and commitment-based WTP signals. It does not replace conversations with customers. It forces you to prove you had them.
- 07
What is The Mom Test?
A framework by Rob Fitzpatrick for conducting customer interviews that produce truthful data. The core rule: never ask leading questions about the future ('Would you use this?'). Instead, ask about past behavior ('When did you last encounter X? What did you do?'). People lie about future behavior. past behavior is a reliable signal.
- 08
Can pre-product startups use this?
Yes. it is designed for pre-product discovery. WTP signals for pre-product include: signed LOIs, paid design partnerships, deposits against future delivery, time commitments (agreed to a weekly feedback session), and reputation commitments (willing to be named as a design partner). You do not need a product to test willingness-to-pay.
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Connect Customer Discovery Prover to Claude, Cursor, ChatGPT & more
