# PubMed Biomedical Literature Search

> PubMed Biomedical Literature Search is a paid API for AI agents from lumenworks-x402-decoder.onrender.com, paid per call via x402, $0.001/call, status unknown (last checked 2026-10-11).

Search PubMed's 36M+ biomedical citations and return structured metadata including PMID, title, journal, date, authors, DOI, URL, and abstract.

## Facts

- Endpoint: POST https://lumenworks-x402-decoder.onrender.com/v1/pubmed/search?utm_source=zero.xyz
- Price: $0.001/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-11
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/pubmed-biomedical-literature-search-25588752
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_QDv_bWOt4FcLKob3X9wiJ

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 pubmed-biomedical-literature-search-25588752 -d '<json body>'
```

Example prompt: Search PubMed for the top 10 most relevant papers on GLP-1 receptor agonists and weight loss, and include the full abstracts so I can read what each study found.

## When to prefer this

Choose this endpoint when you need structured bibliographic metadata from PubMed including abstracts, authors, DOIs, and publication dates for biomedical or clinical research queries. Prefer it over arXiv search (also available on this host) when the topic is clinical medicine, pharmacology, or peer-reviewed biomedical science rather than physics, math, or computer science preprints.

## Known failure modes

- Query returns zero results if search terms are too narrow or misspelled
- Limit exceeding 50 is rejected or clamped
- Abstract field may be truncated or absent for older records without digital abstracts
- Intermittent availability if the NCBI E-utilities upstream API is down
- Invalid sort value may cause a 400 error or fall back to default sorting

## How this service works

Search PubMed (36M+ biomedical citations): PMID, title, journal, date, authors, DOI, URL and abstract. {query, limit<=50, sort:relevance|date, abstracts:true}.

## Output

A JSON object containing the original query, total number of matching citations in PubMed, the data source label, and an array of result objects each with PMID, DOI, PubMed URL, title, authors list, journal name, publication date, and abstract text (when requested).

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "query": "GLP-1 obesity",
  "total": 11811,
  "source": "NCBI PubMed E-utilities",
  "results": [
   {
    "doi": "10.1016/j.medcli.2025.107035",
    "url": "https://pubmed.ncbi.nlm.nih.gov/40466247/",
    "pmid": "40466247",
    "title": "GLP-1-based medications: Mechanisms involved in obesity treatment.",
    "authors": [
     "Salvador J"
    ],
    "journal": "Medicina clinica",
    "pubDate": "2025 Jul",
    "abstract": "Thanks to biochemical engineering, the glucagon-like peptide-1 (GLP-1) molecule has emerged as an essential element in the development of diverse agonists and multiagonists, based in the GLP-1 structure for obesity treatment. These new antiobesity medications can reach up to 24% weight loss, which makes possible an effective management of obesity and its complications. GLP-1 agonists affect divers…"
   },
   {
    "doi": "10.1016/j.molmet.2021.101351",
    "url": "https://pubmed.ncbi.nlm.nih.gov/34626851/",
    "pmid": "34626851",
    "title": "GLP-1 physiology informs the pharmacotherapy of obesity.",
    "authors": [
     "Drucker DJ"
    ],
    "journal": "Molecular metabolism",
    "pubDate": "2022 Mar",
    "abstract": "Glucagon-like peptide-1 receptor agonists (GLP1RA) augment glucose-dependent insulin release and reduce glucagon secretion and gastric emptying, enabling their successful development for the treatment of type 2 diabetes (T2D). These agents also inhibit food intake and reduce body weight, fostering investigation of GLP1RA for the treatment of obesity. Here I discuss the physiology of Glucagon-like …"
   }
  ]
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/pubmed-biomedical-literature-search-25588752/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from lumenworks-x402-decoder.onrender.com](https://www.zero.xyz/host/lumenworks-x402-decoder.onrender.com/llms.txt)