How to Use the API Design Prover MCP in Cursor

Q: Can I use API Design Prover with Cursor's global configuration file?

Yes. You can define this MCP Server in your global /.cursor/mcp.json file. This lets the Cursor agent validate your API contracts across all your local coding projects.

Force Cursor to validate your endpoint schemas and error contracts before writing code in Agent mode.

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Connect API Design Prover MCP to Cursor

Create your Vinkius account to connect API Design Prover to Cursor and route execution through our secure gateway. The platform manages server hosting, runtime updates, and security layers. Configuration requires no manual server provisioning.

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Setup API Design Prover with Cursor

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Real-time schema checks in the Cursor editor

Calling the `validate_api_design` tool inside Cursor lets you check your HTTP structures in real-time. The tool stops the Cursor agent from generating controllers with missing response envelopes. You get clean, validated code injected directly into your active editor workspace.

Enforce strict pagination rules in Cursor Agent

Running the `validate_api_design` tool inside Cursor forces the editor to define strict page caps before generating database code. By running this check in your workspace, the agent catches unbounded list queries. It ensures your Cursor-generated API controllers enforce maximum page limits out of the box.

Catch missing versioning policies in Cursor

Triggering the `validate_api_design` tool inside Cursor stops you from building unversioned endpoints that break frontend clients. If Cursor attempts to write code for an unversioned route, the MCP Server flags it as a design flaw. The editor then rewrites the route with proper versioning before saving the file.

Setup guide

Set up API Design Prover MCP in Cursor

Prerequisites

Cursor installed (macOS, Windows, or Linux)
Active Vinkius subscription with a valid endpoint token

1

Open MCP Settings

Go to Cursor Settings → MCP or open the Command Palette (Cmd+Shift+P / Ctrl+Shift+P) and search for "MCP: Add Server".
2

Add the API Design Prover MCP

Cursor will create or open .cursor/mcp.json in your project root. Paste the JSON snippet on the right. Replace [YOUR_TOKEN_HERE] with your endpoint token from cloud.vinkius.com.
3

Enable Agent mode

Open Composer (Cmd+I / Ctrl+I) and switch to Agent mode using the dropdown at the top. MCP tools are only available in Agent mode.
4

Verify the connection

Ask Cursor something like "List my recent API Design Prover transactions." If the MCP tools are loaded correctly, Cursor will call the API Design Prover tools automatically. You can also check Settings → MCP for a green status indicator.

.cursor/mcp.json

{
  "mcpServers": {
    "api-design-prover-mcp": {
      "url": "https://edge.vinkius.com/[YOUR_TOKEN_HERE]/mcp"
    }
  }
}

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Independent Platform Disclaimer: Vinkius is an independent platform and is not affiliated with, endorsed by, sponsored by, verified by, or otherwise authorized by API Design 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 API Design Prover MCP in Cursor

The tool integrates with Cursor via your local project configuration. When the Cursor agent attempts to write code, it runs the validation tool to verify your endpoint parameters and response shapes first.

Yes. You can define this MCP Server in your global `~/.cursor/mcp.json` file. This lets the Cursor agent validate your API contracts across all your local coding projects.

Not at all. The validation tool runs locally and checks your schema structure in milliseconds, giving Cursor the exact blueprint it needs to write clean code.

It enforces semantic HTTP verbs, RFC 7807 error structures, response envelopes, and strict pagination. It uses rules adapted from Stripe and GitHub API guidelines.

No. The validation logic runs entirely within Cursor's secure MCP runtime environment. Your route structures, endpoint parameters, and versioning rules are never exposed to external networks.

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