How to Use the YC Startup Prover MCP in Mastra AI

Deploy automated startup evaluation workflows with Mastra AI and the YC Startup Prover.

See Vinkius in Action

Works with every AI agent you already use

…and any MCP-compatible client

MCP Servers — Included with Plan

Connect YC Startup Prover MCP to Mastra AI

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

GDPR Included with Plan

Setup YC Startup Prover with Mastra AI

Ask AI about this MCP

ChatGPT

Claude

Perplexity Vinkius runs on Gemini

Gemini

Grok

Build conditional MCP Server pipelines in Mastra AI

Founders lie about their traction. You'll build Mastra AI workflows that run the `validate_yc_startup` tool against incoming pitch decks, branching the logic based on the results. If the evaluation detects premature scaling, the workflow automatically routes the application to a rejection queue. The framework handles the routing while the server enforces Paul Graham's rules. A pitch lacking weekly retention numbers triggers a retry loop, prompting the founder to supply actual MRR data before the agent proceeds to the next step.

Automate the search for manual effort

Startups die when they hire sales reps before finding product-market fit. Your agent scans the submitted business plan for evidence of personal onboarding and manual customer support. It rejects any strategy that relies on massive marketing spend for early user acquisition. You deploy these checks to any cloud with a single command. The system demands that founders name five specific people who have the problem, effectively catching solution-seeking behavior before human reviewers waste their time.

Filter out vanity activity

Page views don't pay the rent. The evaluation cuts through the noise of newsletter signups and focuses entirely on default alive calculations. Your automated pipeline forces the entrepreneur to clarify their one core value proposition in a single sentence. Built-in exponential backoff ensures your audits complete even if the external data sources lag. You set up human-in-the-loop approvals for borderline cases where the founder shows deep user obsession but struggles with early monetization.

Setup guide

Set up YC Startup Prover MCP in Mastra AI

Prerequisites

Node.js 18+ and a TypeScript project
@mastra/mcp + @mastra/core packages
Active Vinkius subscription with a valid endpoint token

1

Install dependencies
Run npm install @mastra/mcp @mastra/core plus your preferred model provider (e.g. @ai-sdk/openai).
2

Configure the MCPClient
Create an MCPClient with your Vinkius endpoint as a URL object. Replace [YOUR_TOKEN_HERE] with your token from cloud.vinkius.com.
3

Discover and inject tools
Call mcpClient.listTools() and spread the result into your agent's tools object. All YC Startup Prover tools become native Mastra tools.
4

Run with any model
Swap openai("gpt-4o") for any AI SDK-compatible provider. Call agent.generate() and the agent routes tool calls through MCP automatically.

agent.ts

import { MCPClient } from "@mastra/mcp";
import { Agent } from "@mastra/core/agent";
import { openai } from "@ai-sdk/openai";

const mcpClient = new MCPClient({
  id: "yc-startup-prover-mcp-client",
  servers: {
    "yc-startup-prover-mcp": {
      url: new URL(
        "https://edge.vinkius.com/[YOUR_TOKEN_HERE]/mcp"
      ),
    },
  },
});

const agent = new Agent({
  name: "YC Startup Prover Agent",
  model: openai("gpt-4o"),
  instructions: "You have access to YC Startup Prover tools.",
  tools: {
    ...(await mcpClient.listTools()),
  },
});

const result = await agent.generate(
  "List recent YC Startup Prover transactions"
);
console.log(result.text);

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.

Why Choose Vinkius

Vinkius connects your tools to AI with real-time monitoring and automatic cost savings — all from one dashboard.

Connect YC Startup Prover now

Real-time monitoring

Live

visibility into every interaction

Connect your favorite tools to your AI and see exactly what's happening — every request, every response, in real time.

Built-in savings

60%

lower AI costs

Vinkius compresses data between your apps and your AI automatically. Lower bills every month — no configuration required.

Single dashboard

One

place for every integration

Every tool your AI connects to, managed from a single screen. One account, complete control.

Common questions about YC Startup Prover MCP in Mastra AI

Initialize the MCPClient with your server URL and spread the available tools into your agent's configuration. Mastra automatically detects the transport layer and makes the startup evaluation logic available to your workflow engine.

Your workflow can easily route pitches differently depending on the evaluation output. Decks that fail the problem discovery phase get an automated rejection email, while those showing strong user obsession escalate to a human partner.

The system actively filters out follower counts and free downloads. It forces the agent to judge the business solely on monthly recurring revenue and weekly retention curves.

Use the requireToolApproval feature to pause the automated audit. A human reviewer can look at the founder's user conversation logs before allowing the workflow to proceed.

Burn rates and runway calculations never persist outside your execution context. Vinkius runs the validation logic inside an ephemeral sandbox that immediately wipes all MRR figures and proprietary algorithms from memory after the workflow step completes.

Use it with your favorite AI tools

Connect this server to Cursor, Claude, VS Code, and more.

OpenAI Agents SDK sdk-python

Google ADK sdk-python

Pydantic AI sdk-python

Vercel AI SDK sdk-typescript