How to Use the OpenAPI Validator Engine MCP in Windsurf

Stop shipping broken specs in Windsurf. Validate your OpenAPI files before Cascade writes a single line of code.

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Connect OpenAPI Validator Engine MCP to Windsurf

Create your Vinkius account to connect OpenAPI Validator Engine to Windsurf — we handle the hosting, security, and runtime updates so you don't have to. No server setup required.

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Setup OpenAPI Validator Engine with Windsurf

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Instant spec verification in Windsurf

Stop guessing if your API definition is valid. When you point Cascade at an OpenAPI file, it uses `validate_openapi` to check the structure against official schemas. It catches missing fields and invalid types before your agent starts generating client SDKs. You save hours of debugging by catching errors at the source.

Multi-version support for Windsurf

You aren't locked into one version. The `validate_openapi` tool handles Swagger 2.0 through OpenAPI 3.2 specs without you switching configurations. Cascade reads the output and shows you exactly where the spec breaks. It turns a cryptic schema failure into a clear path for your next edit.

Automated quality gates for Windsurf

Build a reliable workflow where your agent refuses to work on bad definitions. Use `validate_openapi` as the first step in your Cascade plan. If the spec fails, the agent stops immediately and gives you the error list. You only move forward once the contract is solid.

Setup guide

Set up OpenAPI Validator Engine MCP in Windsurf

Prerequisites

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

1

Open MCP configuration

Click the Cascade assistant icon in the sidebar, then click the hammer icon (🔨) at the top of the panel. Select "Configure" to open ~/.codeium/windsurf/mcp_config.json.
2

Add the OpenAPI Validator Engine 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

Refresh MCPs

Go back to the hammer icon (🔨) in Cascade and click "Refresh". Windsurf will detect the new server. No full restart is needed — the connection is hot-reloaded.
4

Verify in Cascade

Start a new Cascade conversation and ask something like "Show my OpenAPI Validator Engine payment history." If connected, Cascade will call the OpenAPI Validator Engine tools directly. You will see a green dot next to the server name in the MCP panel.

mcp_config.json

{
  "mcpServers": {
    "openapi-validator-engine-mcp": {
      "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 @seriousme/openapi-schema-validator. 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 OpenAPI Validator Engine MCP in Windsurf

It doesn't edit them for you, but it highlights exactly what is broken. You call `validate_openapi` and see the path to the error, letting you fix the issue before Windsurf generates broken code.

Yes. The engine is built to handle Swagger 2.0 alongside all modern OpenAPI versions. Cascade will tell you the version detected before it lists the errors.

Not at all. The validation runs locally and returns the report in milliseconds. It is much faster than waiting for a build to fail after code generation.

Your files never leave your machine. The server only reads the text you pass to `validate_openapi` during the session.

This server is ephemeral and runs locally. It only processes the raw OpenAPI text you provide, and it discards that data once the validation tool finishes its task.

Use it with your favorite AI tools

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

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