# FitPulse Supplement Efficacy Ranking

> FitPulse Supplement Efficacy Ranking is a paid API for AI agents from fitpulse.theaslangroupllc.com, paid per call via x402, $0.08/call, status unknown (last checked 2026-09-14).

Returns a PubMed-grounded, evidence-graded tier list of supplements ranked by fitness goal, with recommended dosing, timing, and filters for budget and dietary restrictions.

## Facts

- Endpoint: GET https://fitpulse.theaslangroupllc.com/api/fit/supplements
- Price: $0.08/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/fitpulse-supplement-efficacy-ranking-8caaf00e
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_AC5ONg9yCGCCdwxnDi2Hg

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-efficacy-ranking-8caaf00e
```

Example prompt: Can you pull up an evidence-graded tier list of supplements for muscle building — I'm vegan, on a budget of about $50/month, and want to know what's actually proven to work with recommended dosing and timing?

## When to prefer this

Choose this endpoint when you need an evidence-grounded, literature-backed ranking of supplements by fitness goal rather than anecdotal recommendations. Ideal for fitness and nutrition agents helping users make informed supplement choices filtered by real-world constraints like budget and dietary needs. Prefer over generic supplement databases when scientific tier grading and dosing guidance are required.

## Known failure modes

- Unsupported fitness goal returns empty or default results
- Invalid or unrecognized dietary restriction parameter may be ignored or cause a 400 error
- Budget filter too low may return no results if no qualifying supplements found
- Overly broad or ambiguous goal may return a generic list without personalization
- Service unavailable or timeout may return a 5xx error

## How this service works

Supplement efficacy ranking / what supplements actually work: evidence-graded tier list by goal. Returns a PubMed-grounded ranking (creatine and more) with recommended dosing and timing, filtered by budget and dietary restrictions. Fitness-info for fitness and nutrition agents, not medical advice.

## Output

A ranked, tier-based list of supplements relevant to the specified fitness goal, each annotated with an evidence grade sourced from PubMed literature, recommended daily dose, optimal timing, price range, and dietary restriction compatibility flags.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "required": [
  "goal"
 ],
 "properties": {
  "goal": {
   "type": "string",
   "description": "Fitness goal (muscle-gain, fat-loss, endurance, recovery, general-health)"
  },
  "lang": {
   "type": "string",
   "description": "Response language"
  },
  "budget": {
   "type": "string",
   "description": "Monthly budget for supplements (e.g. $50, $100, $200)"
  },
  "restrictions": {
   "type": "string",
   "description": "Dietary restrictions or intolerances (vegan, lactose-free, etc.)"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "goal": "muscle-gain",
  "tier_1_essentials": [
   {
    "dose": "3-5g/day",
    "supplement": "Creatine Monohydrate",
    "evidence_grade": "A"
   }
  ]
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/fitpulse-supplement-efficacy-ranking-8caaf00e/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)