Deterministic MCP MCP server

The Deterministic MCP server enables AI agents to perform physics-based validation of simulation results. It allows agents to ingest simulation data, run structured verification checks (such as CFD, structural, and thermal analysis), and receive deterministic receipts with per-check verdicts. This helps agents accept, reject, or request review of simulation outputs based on rigorous engineering constraints rather than probabilistic LLM reasoning.

Endpoint and access

OAuth sign-in: the first time you connect, your client opens the vendor's own authorization prompt in a browser.

OAuth sign-inEndpoint checked 2026-10-05Operated by Deterministic

MCP endpoint (Streamable HTTP)

https://deterministic.sh/mcp

Vendor documentation

What you can do with it

Validate CFD simulation results for units, ranges, and boundary conditions
Check structural simulation outputs against declared allowables and mesh quality
Verify thermal simulation energy balance and heat flow across interfaces
Generate structured verification receipts for AI agent decision-making

Connect from your client

Each snippet registers the same endpoint; pick the client you use.

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Claude Code

Run this once in a terminal. It registers a Streamable HTTP server. Use --scope project to write .mcp.json for the repo.

Claude Code configuration

claude mcp add --transport http deterministic-mcp https://deterministic.sh/mcp

Codex

Run this once. Codex stores MCP servers in ~/.codex/config.toml (or .codex/config.toml in a trusted project).

Codex configuration

codex mcp add deterministic-mcp --url https://deterministic.sh/mcp

Cursor

Merge this server into .cursor/mcp.json in your project, then enable deterministic-mcp in your MCP settings.

Cursor configuration

{
  "mcpServers": {
    "deterministic-mcp": {
      "url": "https://deterministic.sh/mcp"
    }
  }
}

Cline

Merge this into cline_mcp_settings.json (Cline → MCP Servers → Configure). The type must be streamableHttp for a remote HTTP server.

Cline configuration

{
  "mcpServers": {
    "deterministic-mcp": {
      "type": "streamableHttp",
      "url": "https://deterministic.sh/mcp",
      "disabled": false
    }
  }
}

VS Code

Merge this server into .vscode/mcp.json. Use MCP: List Servers to start deterministic-mcp and inspect its tools.

VS Code configuration

{
  "servers": {
    "deterministic-mcp": {
      "type": "http",
      "url": "https://deterministic.sh/mcp"
    }
  }
}

Gemini CLI

Run this once. It writes .gemini/settings.json in the current project; pass --scope user for ~/.gemini/settings.json.

Gemini CLI configuration

gemini mcp add --transport http deterministic-mcp https://deterministic.sh/mcp

Claude Desktop

Merge this into claude_desktop_config.json (macOS: ~/Library/Application Support/Claude/, Windows: %APPDATA%\Claude\), then restart Claude Desktop.

Claude Desktop configuration

{
  "mcpServers": {
    "deterministic-mcp": {
      "url": "https://deterministic.sh/mcp"
    }
  }
}

Windsurf

Merge this into ~/.codeium/windsurf/mcp_config.json, then refresh MCP in Cascade. Windsurf remote servers use serverUrl, not url.

Windsurf configuration

{
  "mcpServers": {
    "deterministic-mcp": {
      "serverUrl": "https://deterministic.sh/mcp"
    }
  }
}

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