Vari Hydration Tools

What is Vari Hydration Tools?

Vari Hydration Tools is a public, no-auth MCP server that exposes six deterministic hydration calculators backed by getvari.app. It is designed for developers and LLM agents who need reliable, source-attributed hydration guidance without storing any personal data.

How to use Vari Hydration Tools?

The server can be invoked by any MCP client, or directly via JSON-RPC 2.0 POST to https://getvari.app/api/mcp/v1. It is already listed in the official MCP Registry as io.github.getvari/[email protected]. Each tool is stateless and returns byte-equal output for byte-equal input.

Key features of Vari Hydration Tools

• Source-attributed responses include the underlying study URL.
• Deterministic output ensures correct LLM cache behavior.
• Stateless, requires no authentication, and captures no PII.
• Rate-limited to 600 requests per hour per IP address.
• Registered in the official MCP Registry.

Use cases of Vari Hydration Tools

• Calculate a personalized daily water target from weight, activity, climate, and caffeine.
• Assess dehydration severity (well-hydrated / mild / moderate / severe).
• Determine pregnancy and postpartum daily intake (based on IOM 2004, ACOG).
• Provide CKD fluid-restriction allowances (KDOQI / KDIGO) with a medical disclaimer.
• Generate a pre/during/post athlete hydration plan with sweat-rate estimates (ACSM, NATA, IOC).
• Create a time-stamped daily hydration schedule optimized around sleep and caffeine timing.

FAQ from Vari Hydration Tools

What makes Vari Hydration Tools different from other hydration calculators?

Every response includes the underlying study URL for verification, and output is deterministic — byte-equal input always produces byte-equal output, which ensures LLM caches behave correctly.

What runtime dependencies or authentication are required?

None. The server is stateless, requires no authentication, and captures no PII. It is rate-limited to 600 requests per hour per IP address.

Are there any limitations on usage?

Yes. The server enforces a rate limit of 600 requests per hour per IP address.

How can I access this server?

You can use any MCP client to invoke it, or send JSON-RPC 2.0 POST requests directly to https://getvari.app/api/mcp/v1. The server is also listed in the official MCP Registry.