How to Use the YC Startup Prover MCP in Claude Code

Audit your startup logic from the CLI. Connect the YC Startup Prover MCP Server to Claude Code and validate your pitch in seconds.

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Connect YC Startup Prover MCP to Claude Code

Create your Vinkius account to connect YC Startup Prover to Claude Code — we handle the hosting, security, and runtime updates so you don't have to. No server setup required.

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Setup YC Startup Prover with Claude Code

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Terminal-based pitch validation

Run `validate_yc_startup` directly from your command line to audit your startup strategy. It provides a brutal, structured critique based on YC's proven methodology. Claude Code pipes the output into your workflow, letting you integrate these checks into your existing development scripts. It turns your terminal into a venture capital evaluation engine.

Hard tech sanity check

Avoid the trap of building technology in search of a problem. This server forces an analysis of your problem discovery and user obsession metrics. `validate_yc_startup` ensures that your deep-tech approach is grounded in real customer pain. It forces you to prove that people are paying for a solution that actually works.

Pipeline integration

Use the server in CI/CD pipelines to ensure every new feature aligns with your core value proposition. It prevents scope creep by validating changes against your one-thing focus. `validate_yc_startup` keeps your development path lean. It ensures you are not adding features that do not directly improve your retention or revenue.

Setup guide

Set up YC Startup Prover MCP in Claude Code

Prerequisites

Claude Code CLI installed (npm install -g @anthropic-ai/claude-code)
Active Vinkius subscription with a valid endpoint token

1

Run the add command

Open your terminal and run the command shown on the right. Replace [YOUR_TOKEN_HERE] with your endpoint token from cloud.vinkius.com. Use --scope user to make it available across all projects.
2

Verify the connection

Start a Claude Code session and type /mcp to list connected servers. You should see yc-startup-prover-mcp with a green status indicator.
3

Start using tools

Ask Claude Code something like "Check my latest YC Startup Prover transactions." It will automatically discover and invoke the available YC Startup Prover tools.

Terminal

claude mcp add --transport http yc-startup-prover-mcp https://edge.vinkius.com/[YOUR_TOKEN_HERE]/mcp

Get your connection token →

Prerequisites

Claude Code CLI installed
Active Vinkius subscription with a valid endpoint token

1

Open the config file

Create or edit .mcp.json in your project root for project-level scope, or ~/.claude.json for user-level scope.
2

Add the YC Startup Prover MCP

Paste the JSON snippet shown on the right into the mcpServers object. Replace [YOUR_TOKEN_HERE] with your endpoint token from cloud.vinkius.com.
3

Restart Claude Code

Start a new Claude Code session. Type /mcp to confirm the server is connected. The tools will be automatically available in your conversation.

.mcp.json

{
  "mcpServers": {
    "yc-startup-prover-mcp": {
      "type": "url",
      "url": "https://edge.vinkius.com/[YOUR_TOKEN_HERE]/mcp"
    }
  }
}

Get your connection token →

Independent Platform Disclaimer: Vinkius is an independent platform and is not affiliated with, endorsed by, sponsored by, verified by, or otherwise authorized by YC Startup Prover. All third-party trademarks, logos, and brand names are the property of their respective owners. Their use on this website is strictly for informational purposes to identify service compatibility and interoperability.

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Common questions about YC Startup Prover MCP in Claude Code

Use the command line to add the server via the MCP transport configuration. Once added, you can call the validation tool from any directory.

Yes. It is designed to be called as part of your existing terminal workflow. It returns machine-readable results that your scripts can parse.

It brings YC-level rigor to your backend development. You can validate your product logic without ever leaving your terminal environment.

Yes. You can script the validation tool to run against your business documentation whenever you update your roadmap. It helps catch strategic drift early.

It only touches the text of your pitch and business plan. The tool is isolated from your codebase to ensure your intellectual property stays secure.

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