@getvari/mcp

Stdio bridge for the public Vari Hydration Tools Model Context Protocol server. Lets MCP clients (Claude Desktop, Cursor, Continue.dev, and any other stdio-launching MCP host) call the six hydration calculators that back getvari.app — without writing a custom HTTP client.

The package is a ~50-line proxy. The real server is the Vercel-hosted HTTP endpoint at https://getvari.app/api/mcp/v1; we publish this package so stdio-only MCP installers can launch it via npx.

Tools

All six tools are deterministic, source-attributed, and require no auth.

Tool name	What it does
calculate_water_intake	Personalized daily water target (mL) from weight, activity, climate, caffeine.
dehydration_check	Symptom-scored dehydration severity (well-hydrated → severe) + recommended actions.
pregnancy_water_intake	Trimester-aware intake for pregnancy + postpartum, IOM/ACOG-aligned.
kidney_safe_intake	CKD-safe fluid allowance (KDOQI/KDIGO). Returns a restriction, not a hydration goal.
athlete_hydration_plan	Pre / during / post hydration plan with sweat-rate estimate (ACSM/NATA/IOC).
optimize_hydration_for_energy	Time-stamped intake schedule that pre-empts the afternoon crash and caffeine dips.

Every response embeds a canonical source URL pointing at the corresponding getvari.app/tools page, so LLMs that surface the call to the user can cite the methodology.

Install

Claude Desktop

Edit claude_desktop_config.json (Settings → Developer → Edit Config):

{
  "mcpServers": {
    "vari-hydration": {
      "command": "npx",
      "args": ["-y", "@getvari/mcp"]
    }
  }
}

Restart Claude Desktop. The six tools appear under Vari Hydration in the tools panel.

Cursor

Cursor reads the same mcp.json shape. Drop this into ~/.cursor/mcp.json:

{
  "mcpServers": {
    "vari-hydration": {
      "command": "npx",
      "args": ["-y", "@getvari/mcp"]
    }
  }
}

Continue.dev

Add the server in your ~/.continue/config.json under experimental.modelContextProtocolServers:

{
  "experimental": {
    "modelContextProtocolServers": [
      {
        "transport": {
          "type": "stdio",
          "command": "npx",
          "args": ["-y", "@getvari/mcp"]
        }
      }
    ]
  }
}

Configuration

Env var	Default	Purpose
VARI_MCP_URL	https://getvari.app/api/mcp/v1	Override the upstream HTTP endpoint (e.g. for staging).

License

MIT — see LICENSE.

Links

• Website: https://getvari.app
• Source repository: https://github.com/getvari/vari-mcp
• MCP manifest: https://getvari.app/.well-known/mcp.json
• OpenAPI 3.1 contract: https://getvari.app/api/mcp/v1/openapi.json
• MCP catalogue: https://modelcontextprotocol.io/servers