How do I install Arctura Reef — counterfactual evidence engine (synthetic) or Openapi MCP Server 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 Arctura Reef — counterfactual evidence engine (synthetic) and Openapi MCP Server free or paid?

Arctura Reef — counterfactual evidence engine (synthetic) operates under a Free / Open Source model (No auth required). Openapi MCP Server operates under a Free / Open Source model (No auth required).

Which MCP server has more tools and community activity?

Arctura Reef — counterfactual evidence engine (synthetic) lists 0 tools with 1 views and 0 GitHub stars. Openapi MCP Server lists 5 tools with 3 views and 904 GitHub stars.

Can I use both Arctura Reef — counterfactual evidence engine (synthetic) and Openapi MCP Server 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.

Arctura Reef — counte… vs Openapi MCP Server

Q: What is the key difference between Arctura Reef — counterfactual evidence engine (synthetic) and Openapi MCP Server?

Arctura Reef — counterfactual evidence engine (synthetic) belongs to the Developer Tools category with local stdio execution, while Openapi MCP Server belongs to the Developer Tools category with cloud HTTP/SSE execution.

Arctura Reef — counte… vs Openapi MCP Server | AllMCPs

Feature & Specification Comparison

Specification	A Arctura Reef — counterfactual evidence engine (synthetic) Developer Tools	Openapi MCP Server snaggle-ai Developer Tools
Summary	Deterministic same-seed but-for twin for battery fleets — synthetic-only (DR-236)	Connect any HTTP/REST API server using an Open API spec (v3)
Category & Scope	Developer Tools	Developer Tools
Quality signal	37/100 (Fair)	47/100 (Fair)
Transport Protocol	Local Subprocess (stdio)	Remote HTTP/SSE
Auth Requirement	No auth required	No auth required
Pricing Model	Free / Open Source	Free / Open Source
Required Env Vars	None required	None required
Compatible Clients	Claude DesktopCursorWindsurfClineVS Code	Claude DesktopCursorWindsurfClineVS Code
Install path signal	`npx · low`	`Remote (HTTP/SSE) · high`
Engagement & Health	1 views 0 copies 0 upvotes	3 views 0 copies 1 upvotes 904 stars
Verified / Official	Community Listing	Community Listing
Open full listing	View Arctura Reef — counterfactual evidence engine (synthetic) Listing	View Openapi MCP Server Listing

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).

Arctura Reef — counterfactual evidence engine (synthetic) Configuration

mcpServers (Claude Desktop / Cursor)

{
  "mcpServers": {
    "arctura-reef-counterfactual-evidence-engine-synthetic": {
      "command": "npx",
      "args": [
        "-y",
        "arctura-reef-counterfactual-evidence-engine-synthetic"
      ]
    }
  }
}

Openapi MCP Server Configuration

mcpServers (Claude Desktop / Cursor)

{
  "mcpServers": {
    "snaggle-ai-openapi-mcp-server": {
      "url": "https://openapi-mcp.openapisearch.com/mcp"
    }
  }
}

Arctura Reef — counterfactual evidence engine (synthetic) vs Openapi MCP Server

At a Glance & Executive Verdict

Which MCP Server Should You Choose?

Choose Arctura Reef — counterfactual evidence engine (synthetic) when:

Choose Openapi MCP Server when:

Feature & Specification Comparison

Tools & Capabilities Breakdown

Arctura Reef — counterfactual evidence engine (synthetic) Tools (0)

Openapi MCP Server Tools (5)

Ready-to-Paste Client Configurations

Frequently Asked Questions

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