# whatchuneed PubMed Search

> whatchuneed PubMed Search is a paid API for AI agents from whatchuneed.vercel.app, paid per call via x402, $0.2/call, status unknown (last checked 2026-09-14).

Searches PubMed's biomedical literature database and returns structured article metadata including titles, authors, abstracts, and journal information.

## Facts

- Endpoint: POST https://whatchuneed.vercel.app/api/med/pubmed
- Price: $0.2/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/whatchuneed-pubmed-search-a6c52f2c
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_dGSbKPDG1f9950ZtPO8eh

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 whatchuneed-pubmed-search-a6c52f2c -d '<json body>'
```

Example prompt: Search PubMed for up to 10 articles about the efficacy of mRNA vaccines in elderly populations and give me the titles, authors, and abstracts.

## When to prefer this

Choose this endpoint when you need structured, machine-readable biomedical literature metadata from PubMed — particularly for agent workflows that require abstracts, author lists, or PMIDs for downstream processing. It is preferable to scraping PubMed directly and more structured than general web search for medical topics.

## Known failure modes

- Empty query string returns an error or empty results
- Very broad queries may return incomplete or low-relevance results if max_results is not bounded
- PubMed API outages or rate limits may cause failures
- Queries with typos or unusual terminology may return zero results
- max_results set too high may increase latency or hit upstream limits

## How this service works

320+ pay-per-call API endpoints across accommodation, LLM, code execution, crypto, medical, finance, and more. One API, one payment. Powered by x402 protocol.

## Output

Returns a JSON object with a total count of matching articles and an array of article records, each containing the PubMed ID (PMID), publication year, title, list of authors, journal name, and abstract text.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "required": [
  "query"
 ],
 "properties": {
  "query": {
   "type": "string"
  },
  "max_results": {
   "type": "integer"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "total": {
   "type": "integer"
  },
  "articles": {
   "type": "array",
   "items": {
    "type": "object",
    "properties": {
     "pmid": {
      "type": "string"
     },
     "year": {
      "type": "integer"
     },
     "title": {
      "type": "string"
     },
     "authors": {
      "type": "array",
      "items": {
       "type": "string"
      }
     },
     "journal": {
      "type": "string"
     },
     "abstract": {
      "type": "string"
     }
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/whatchuneed-pubmed-search-a6c52f2c/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from whatchuneed.vercel.app](https://www.zero.xyz/host/whatchuneed.vercel.app/llms.txt)