What is the key difference between Openapi To MCP and MCP Js?

Openapi To MCP belongs to the Code Execution category with local stdio execution, while MCP Js belongs to the Code Execution category with cloud HTTP/SSE execution.

How do I install Openapi To MCP or MCP Js in Claude Desktop or Cursor?

Copy the mcpServers JSON configuration snippet provided on this page into your claude_desktop_config.json or ~/.cursor/mcp.json file and restart your AI client.

Are Openapi To MCP and MCP Js free or paid?

Openapi To MCP operates under a Free / Open Source model (API Key required). MCP Js operates under a Free / Open Source model (API Key required).

Which MCP server has more tools and community activity?

Openapi To MCP lists 4 tools with 2 views and 34 GitHub stars. MCP Js lists 5 tools with 2 views and 57 GitHub stars.

Can I use both Openapi To MCP and MCP Js together in the same MCP host?

Yes! MCP hosts like Claude Desktop, Cursor, Windsurf, Cline, and VS Code support configuring multiple servers under the mcpServers object simultaneously.

Side-by-Side Model Context Protocol Comparison

Openapi To MCP vs MCP Js

In-depth architectural comparison of the Openapi To MCP and MCP Js MCP servers. Compare execution transports, security boundaries, tool capabilities, quality scores, and ready-to-paste client installation snippets for Claude, Cursor, Windsurf, and VS Code.

At a Glance & Executive Verdict

Openapi To MCP

Code Execution · Local stdio

Quality: 48/100 (Fair) | Auth: API Key required

MCP Js

Code Execution · Remote HTTP/SSE

Quality: 59/100 (Good) | Auth: API Key required

Verdict Summary: Choose Openapi To MCP if you need specialized Code Execution tools running via a local process. Choose MCP Js if your workspace requires Code Execution integration with remote web transport. Both servers can be configured concurrently in your client's mcpServers manifest.

Which MCP Server Should You Choose?

Choose Openapi To MCP when:

You need dedicated capabilities in the Code Execution domain.
You prefer local stdio subprocess transport architecture.
Your security boundary fits: API Key required (Free / Open Source).
You have access to required keys: BEARER_TOKEN, OAUTH_2_CLIENT_ID, OAUTH_2_CLIENT_SECRET, OAUTH_2_TOKEN_URL, OAUTH_2_USERNAME, OAUTH_2_PASSWORD, OAUTH_2_REFRESH_TOKEN.
Primary tools included: operation.x-mcp-tool-name, operation.x-mcp-tool-description, operation.description.

Explore Openapi To MCP Details

Choose MCP Js when:

You need dedicated capabilities in the Code Execution domain.
You prefer remote streaming HTTP/SSE transport architecture.
Your security boundary fits: API Key required (Free / Open Source).
You have access to required keys: .

Feature & Specification Comparison

Specification	Openapi To MCP ouvreboite Code Execution	MCP Js r33drichards Code Execution
Summary	⃣ ☁️ - Lightweight MCP server to access any API using their OpenAPI specification. Supports OAuth2 and full JSON schema parameters and request body.	A Javascript code execution sandbox that uses v8 to isolate code to run AI generated javascript locally without fear. Supports heap snapshotting for persistent sessions.
Category & Scope	Code Execution

Tools & Capabilities Breakdown

Openapi To MCP Tools (4)

operation.x-mcp-tool-name

operation.x-mcp-tool-description

operation.description

path.description

MCP Js Tools (5)

run_js

Stateful: queue execution → `{execution_id}`. Stateless: run and return `{output, error?}`.

get_execution

Poll status/result of an execution.

get_execution_output

Ready-to-Paste Client Configurations

Paste either (or both) of these JSON server blocks into your client config file (e.g. claude_desktop_config.json or ~/.cursor/mcp.json).

Openapi To MCP Configuration

mcpServers (Claude Desktop / Cursor)

{
  "mcpServers": {
    "ouvreboite-openapi-to-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "ouvreboite-openapi-to-mcp"
      ],
      "env": {
        "BEARER_TOKEN": "YOUR_BEARER_TOKEN_HERE",
        "OAUTH_2_CLIENT_ID": "YOUR_OAUTH_2_CLIENT_ID_HERE",
        "OAUTH_2_CLIENT_SECRET": "YOUR_OAUTH_2_CLIENT_SECRET_HERE",
        "OAUTH_2_TOKEN_URL": "YOUR_OAUTH_2_TOKEN_URL_HERE",
        "OAUTH_2_USERNAME": "YOUR_OAUTH_2_USERNAME_HERE",
        "OAUTH_2_PASSWORD": "YOUR_OAUTH_2_PASSWORD_HERE",
        "OAUTH_2_REFRESH_TOKEN": "YOUR_OAUTH_2_REFRESH_TOKEN_HERE"
      }
    }
  }
}

MCP Js Configuration

mcpServers (Claude Desktop / Cursor)

{
  "mcpServers": {
    "r33drichards-mcp-js": {
      "url": "http://localhost:8080/mcp"
    }
  }
}

Frequently Asked Questions

Openapi To MCP is categorized under Code Execution and uses a local stdio subprocess. In contrast, MCP Js belongs to Code Execution using remote streaming HTTP/SSE transport. Select Openapi To MCP when you need capabilities focused on code execution and MCP Js when you require tools for code execution.

More alternatives to Openapi To MCP More alternatives to MCP Js Code Execution category hub