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PubMed Search via NCBI E-utilities (Markdown)
x402
PubMed Search via NCBI E-utilities (Markdown) is a paid API for AI agents from x402-v2-mint-pubmed-search.vercel.app, paid per call via x402, $0.005/call, status unknown (last checked 2026-10-31).
Searches PubMed using NCBI E-utilities without an API key and returns results as markdown-formatted text including article count, ID list, and optional metadata like title, journal, and publication date.
Price / call$0.005
Success—
StatusUnknown
How this service works
[concierge markdown] PubMed search via NCBI E-utilities (keyless). Query → count + idlist (retmax≤10) + optional title/journal/pubdate.
Output
A markdown-formatted response containing the total count of matching PubMed articles, a list of up to 10 PubMed IDs (PMIDs), and optionally for each result: the article title, journal name, and publication date.
Example use cases
Literature review for rare disease
“Can you search PubMed for up to 10 recent articles on amyotrophic lateral sclerosis and TDP-43, and give me the results as markdown with titles and journals?”
Drug interaction research
“Search PubMed for studies on metformin and cardiovascular outcomes — I need up to 10 results formatted in markdown with publication dates and journal names.”
Competitive research for biotech startup
“Find me the latest PubMed papers on mRNA vaccine delivery mechanisms, up to 10 results, formatted as markdown with titles and publication years.”
Technical details
Endpoint
POSThttps://x402-v2-mint-pubmed-search.vercel.app/v1/pubmed-search/fmt/markdown?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a quick, keyless PubMed literature search with human-readable markdown output — ideal for AI agents surfacing biomedical research results in chat interfaces, reports, or summaries. Prefer this over the JSON or CSV sibling endpoints when the output is going directly to a human reader or a markdown-rendering context. Best for exploratory queries returning up to 10 results; not suited for bulk retrieval or full-text access.
Side effects
- Empty result set if query terms match no PubMed records
- NCBI rate limiting or temporary unavailability causing request failure
- Malformed or overly complex query syntax returning unexpected results
- retmax exceeding the cap of 10 being silently clamped or rejected
- Optional metadata fields absent when NCBI record is incomplete
Tags
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