# Vextorium PubMed Biomedical Literature Search

> Vextorium PubMed Biomedical Literature Search is a paid API for AI agents from api.vextorium.com, paid per call via x402, $0.003/call, status unknown (last checked 2026-10-16).

Searches PubMed (NIH) biomedical literature and returns article metadata including title, authors, journal, date, DOI, PMID, and abstract, sorted newest first with optional year filtering.

## Facts

- Endpoint: POST https://api.vextorium.com/pubmed-buscar-pago?utm_source=zero.xyz
- Price: $0.003/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-16
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/vextorium-pubmed-biomedical-literature-search-70b51e9a
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_59zJYNkE1QFpRiAiHp_rN

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 vextorium-pubmed-biomedical-literature-search-70b51e9a -d '<json body>'
```

Example prompt: Search PubMed for the 10 most recent studies on CRISPR gene editing in cancer therapy published since 2022 and give me each article's title, authors, journal, abstract, and DOI.

## When to prefer this

Choose this endpoint when you need programmatic, structured access to PubMed biomedical literature with clean JSON output including abstracts and identifiers (DOI, PMID). Prefer it over direct PubMed API calls when you want a simple POST interface with built-in newest-first sorting and optional year filtering, without handling NCBI's E-utilities directly. Ideal for AI agents performing literature reviews, evidence synthesis, or medical research queries.

## Known failure modes

- Empty result set if query terms match no PubMed records
- Null abstract fields for articles that have no abstract on PubMed
- Rate limiting or timeout if PubMed upstream is slow
- Invalid or missing 'consulta' field returns a schema validation error
- Extremely broad queries may return incomplete or truncated results without a limit set

## How this service works

Search biomedical literature on PubMed (NIH): title, authors, journal, date, DOI, PMID and abstract of each article, newest first, with optional year filter.

## Output

Returns a JSON object containing the total number of matching articles, the source (PubMed), the original query string, and an array of articles each with: title, list of authors, journal name, publication date, DOI, PMID, link to the article on PubMed, and full abstract text.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "limite": {
   "type": "integer"
  },
  "consulta": {
   "type": "string"
  },
  "desde_año": {
   "type": "integer"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/vextorium-pubmed-biomedical-literature-search-70b51e9a/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.vextorium.com](https://www.zero.xyz/host/api.vextorium.com/llms.txt)