# FitPulse Supplement Stack Review — Dosing & Timing by Goal

> FitPulse Supplement Stack Review — Dosing & Timing by Goal is a paid API for AI agents from fitpulse.theaslangroupllc.com, paid per call via x402, $0.08/call, status unknown (last checked 2026-09-15).

Returns evidence-based tier ratings, recommended dosing, and timing for a supplement stack tailored to a specific fitness goal.

## Facts

- Endpoint: GET https://fitpulse.theaslangroupllc.com/api/fit/supplement
- Price: $0.08/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/fitpulse-supplement-stack-review-dosing-timing-by-goal-8d94198d
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_p-cXbEoilID0uqyXAPOcz

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-review-dosing-timing-by-goal-8d94198d
```

Example prompt: What supplements should I take for muscle building, and when should I take them? I want evidence-based tier ratings and exact dosing recommendations for a strength and hypertrophy goal.

## When to prefer this

Use this endpoint when a user wants evidence-graded supplement recommendations with specific dosing and timing for a named fitness goal (e.g. fat loss, muscle gain, endurance). Prefer this over a general supplement efficacy ranker when the user needs a complete, actionable stack with dosing schedules rather than just a tier list.

## Known failure modes

- Unrecognized or vague goal returns a generic or empty stack
- Missing goal parameter causes a 400 bad request error
- Overly broad goal (e.g. 'get healthy') may produce low-confidence or minimal results
- Network timeout or service unavailability returns a 5xx error

## 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

A structured response containing evidence-based tier ratings for relevant supplements, recommended daily doses, and timing guidance (pre-workout, post-workout, morning, etc.) tailored to the specified fitness goal — clearly marked as fitness information, not medical advice.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "required": [
  "goal"
 ],
 "properties": {
  "goal": {
   "type": "string",
   "description": "e.g. muscle-gain, fat-loss, endurance, recovery, general-health"
  },
  "lang": {
   "type": "string",
   "description": "lang"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "goal": "muscle-gain",
  "tier_1_supplements": [
   {
    "dose": "3-5g/day",
    "name": "Creatine Monohydrate",
    "evidence": "strong"
   }
  ]
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/fitpulse-supplement-stack-review-dosing-timing-by-goal-8d94198d/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from fitpulse.theaslangroupllc.com](https://www.zero.xyz/host/fitpulse.theaslangroupllc.com/llms.txt)