# FitPulse Supplement Stack Analyzer

> FitPulse Supplement Stack Analyzer is a paid API for AI agents from fitpulse-vert.vercel.app, paid per call via x402, $0.08/call, status unknown (last checked 2026-09-13).

Analyzes a fitness supplement stack and returns evidence-based tier ratings, recommended dosing, and optimal timing for each supplement.

## Facts

- Endpoint: GET https://fitpulse-vert.vercel.app/api/fit/supplement
- Price: $0.08/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-13
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/fitpulse-supplement-stack-analyzer-00b75703
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_vNR3yf53-E5eVTumBpvfS

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability fitpulse-supplement-stack-analyzer-00b75703
```

Example prompt: Can you analyze my supplement stack — I'm taking creatine monohydrate 5g, caffeine 200mg, and beta-alanine 3.2g — and give me evidence-based tier ratings, the right dosing, and best timing for each one around my morning workouts?

## When to prefer this

Use this endpoint when you need per-supplement evidence grading and precise dosing/timing guidance for a specific combination of supplements, rather than a general ranking or single-supplement lookup. Ideal when a user wants to validate their current stack or optimize their protocol around a training schedule.

## Known failure modes

- Unknown or unsupported supplement names return a null or low-confidence rating
- Missing required stack input returns a 400 validation error
- Ambiguous supplement names may produce generic rather than specific analysis
- Payment not processed results in 402 Payment Required
- Rate limiting may return 429 if called too frequently

## How this service works

Supplement stack review / dosing & timing by goal: evaluate which supplements to take. Returns evidence-based tier ratings, recommended dosing, and timing for a goal-based stack. Fitness-info for fitness and nutrition agents, not medical advice.

## Output

Returns evidence-based tier ratings (e.g. S/A/B/C tier) for each supplement in the stack, recommended dosing amounts, optimal timing windows relative to training, synergy notes between supplements, and any relevant contraindications or redundancies — all grounded in published research.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema"
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/fitpulse-supplement-stack-analyzer-00b75703/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from fitpulse-vert.vercel.app](https://www.zero.xyz/host/fitpulse-vert.vercel.app/llms.txt)