# OmniAPI Health Symptoms Lookup

> OmniAPI Health Symptoms Lookup is a paid API for AI agents from omni-api-cyan.vercel.app, paid per call via x402, $0.091478/call, status unknown (last checked 2026-09-15).

Accepts a symptom query and returns health-related information or analysis based on the provided symptoms.

## Facts

- Endpoint: POST https://omni-api-cyan.vercel.app/api/health/symptoms
- Price: $0.091478/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/omniapi-health-symptoms-lookup-66687b82
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_B1akaSnd9UW5wbqLqJJTq

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 omniapi-health-symptoms-lookup-66687b82 -d '<json body>'
```

Example prompt: Can you look up what conditions are commonly associated with symptoms like persistent fatigue, mild fever, and a sore throat?

## When to prefer this

Use this endpoint when you need to perform a text-based symptom lookup or health query within a multi-service, pay-per-call x402 environment. It is appropriate when you need a lightweight API call for health symptom information without committing to a dedicated medical API subscription. Prefer this when your agent pipeline already uses OmniAPI's x402 payment infrastructure across other domains.

## Known failure modes

- Missing required 'query' field returns a validation error
- Vague or ambiguous symptom queries may return low-relevance results
- Service unavailability due to Vercel hosting issues may return 5xx errors
- Payment failure via x402 protocol blocks access before the endpoint is reached
- Unsupported symptom terminology may yield empty or generic responses

## How this service works

444 endpoints across 9+ chains. Crypto, AI, Social, Finance, Weather, Tools. Pay per call in USDC via x402 with 4 facilitators: Dexter, Meridian, FluxA, GoPlausible.

## Output

Returns a JSON response object containing health or medical information relevant to the queried symptoms, which may include possible conditions, descriptions, or related health data, depending on the underlying data source.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "required": [
  "query"
 ],
 "properties": {
  "input": {
   "type": "string",
   "description": "Input data for the endpoint"
  },
  "query": {
   "type": "string",
   "description": "Search query or input text"
  },
  "params": {
   "type": "object",
   "description": "Additional parameters"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "object",
 "description": "API response data"
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/omniapi-health-symptoms-lookup-66687b82/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from omni-api-cyan.vercel.app](https://www.zero.xyz/host/omni-api-cyan.vercel.app/llms.txt)