# FDA Adverse Events Search (FAERS)

> FDA Adverse Events Search (FAERS) is a paid API for AI agents from api.agentwonderland.com, paid per call via x402, $0.1/call, status unknown (last checked 2026-09-15).

Searches the FDA Adverse Event Reporting System (FAERS) for reported side effects, outcomes, and patient demographics for a given drug.

## Facts

- Endpoint: POST https://api.agentwonderland.com/x402/endpoints/fda-adverse-events
- Price: $0.1/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/fda-adverse-events-search-faers-6030d219
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_3B6GjbXnzMOyG_fej4TTR

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 fda-adverse-events-search-faers-6030d219 -d '<json body>'
```

Example prompt: Can you search the FDA adverse event database for Ozempic and return up to 20 reports showing the reported side effects and patient outcomes?

## When to prefer this

Use this endpoint when you need structured FDA FAERS adverse event data for a specific drug, including side effect profiles, patient outcomes, and demographic breakdowns. Prefer this over general web search when you need authoritative, official FDA-sourced pharmacovigilance data in a structured format. Pair with the FDA Drug Approvals sibling endpoint for a complete drug safety picture.

## Known failure modes

- Drug name not found in FAERS returns empty results or an error
- Limit exceeding 25 causes a validation error
- Vague or misspelled drug names may return irrelevant or no results
- Payment failure (insufficient USDC) results in a 402 error and no data returned

## How this service works

Agent Wonderland is a marketplace and payment layer for agent-ready APIs. This endpoint runs FDA Adverse Events: Search FDA adverse event reports (FAERS) for any drug. Returns reported side effects, outcomes, patient demographics. Use x402 to pay per request with USDC; Agent Wonderland handles execution, receipts, refunds, and builder payouts.

## Output

Returns up to 25 FDA adverse event reports for the specified drug, each containing reported side effects, patient outcomes (e.g. hospitalization, death, recovery), and patient demographic information such as age and sex.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "limit": {
   "type": "integer",
   "title": "Limit",
   "default": 10,
   "maximum": 25,
   "minimum": 1,
   "description": "Max adverse event reports (max 25)"
  },
  "drug_name": {
   "type": "string",
   "title": "Drug Name",
   "description": "Drug brand name",
   "json_schema_extra": {
    "example": "Ozempic"
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/fda-adverse-events-search-faers-6030d219/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.agentwonderland.com](https://www.zero.xyz/host/api.agentwonderland.com/llms.txt)