pubmed

name	pubmed
description	Use for biomedical and life-science literature searches when query expects PubMed articles, clinical trials, or medical research papers.
version	1
languages	["en"]
methods	[{"id":"api_search","impl":"methods/api_search.py","requires":[],"rate_limit":{"per_min":10,"per_hour":300}}]
fallback_chain	["api_search"]
when_to_use	{"query_languages":["en","mixed"],"query_types":["academic","medical","clinical","literature-review"],"avoid_for":["news","product-review","real-time","programming"]}
quality_hint	{"typical_yield":"medium-high","chinese_native":false}
layer	leaf
domains	["academic","medical"]
scenarios	["medical-research","clinical-trial","drug-review","biomedical-paper"]
model_tier	Fast

Overview

PubMed is NCBI's free search engine for biomedical and life sciences literature. No API key required. Best for medical research, clinical trials, drug studies, and biological science papers.

When to Choose It

• Biomedical, clinical, or pharmaceutical research queries
• Searching for peer-reviewed medical journal articles
• Finding abstracts with DOI or PubMed ID for citation

How To Search

Uses E-utilities API: esearch.fcgi to get IDs, esummary.fcgi to fetch metadata.

Quality Bar

• Evidence items have non-empty title and url.
• No crash on empty or malformed API response.
• Source channel field matches the channel name.