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NCBI PubMed MCP by usefulapi MCP Server

answering

NCBI PubMed MCP by usefulapi is answering right now. Last checked 8 min ago. It exposes 5 tools. Last commit 11 Nov 2026.

Search PubMed, read abstracts and summaries, and find similar articles in NCBI PubMed.

Uptime history 9 days of history
9 days agonow
100.0%
Uptime 24h
91 of 91 checks
5
Tools
read from the server
169 ms
Response time
average over 24h
1
Stars
last commit 11 Nov 2026

What changed 15

Every tool that appeared, vanished or quietly changed what it asks for. Recorded since 3 November 2026. No other catalogue keeps this.

11 Nov a tool changed version
10 Nov a tool changed version3 times that day
7 Nov a tool changed version3 times that day
6 Nov a tool changed version3 times that day
5 Nov a tool changed version2 times that day
3 Nov a tool changed version3 times that day
and 9 more, back to 3 November 2026

Nothing serious here today

Today is the operative word: we check NCBI PubMed MCP by usefulapi every 15 minutes and re-read its code on every release. Watch it and you find out the day that stops being true.

Three servers free · no card

Connect this server

Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 8 min ago.

run in your terminal
claude mcp add pubmed-ncbi-e-utilities --transport http https://pubmed-ncbi-e-utilities.usefulapi.io/mcp
Settings → Connectors → Add custom connector, then paste this address
https://pubmed-ncbi-e-utilities.usefulapi.io/mcp
~/.codex/config.toml
[mcp_servers.pubmed-ncbi-e-utilities]
url = "https://pubmed-ncbi-e-utilities.usefulapi.io/mcp"
.cursor/mcp.json
{
  "mcpServers": {
    "pubmed-ncbi-e-utilities": {
      "url": "https://pubmed-ncbi-e-utilities.usefulapi.io/mcp"
    }
  }
}
.vscode/mcp.json
{
  "servers": {
    "pubmed-ncbi-e-utilities": {
      "type": "http",
      "url": "https://pubmed-ncbi-e-utilities.usefulapi.io/mcp"
    }
  }
}

Available tools 5

Read directly from the server with tools/list, grouped by what they act on. If a tool disappears, we record the date.

pubmed
pubmed_database_info
Show PubMed's current record count, last update time and the search field codes (for example TIAB or AU) that pubmed_search accepts. E-utilities: einfo.fcgi?db=pubmed.
pubmed_fetch_abstracts
Get the citation and abstract text for up to 20 PubMed articles by PMID, as plain text. Keep the PMID and journal when you cite an article. E-utilities: efetch.fcgi?db=pubmed&rettype=abstract.
pubmed_related
List PubMed articles that are similar to one article (PubMed's 'similar articles' links), by PMID. Returns the linked PMIDs; use pubmed_summary for their details. E-utilities: elink.fcgi?dbfrom=pubmed&cmd=neighbor.
pubmed_search
Search PubMed with the same query syntax as the PubMed search box (fields, MeSH terms, boolean operators). Returns the total hit count and a list of PMIDs; use pubmed_summary or pubmed_fetch_abstracts on the PMIDs. E-utilities: esearch.fcgi?db=pubmed.
pubmed_summary
Get short metadata for up to 100 PubMed articles by PMID: title, authors, journal, publication date, DOI and PubMed Central ID. Does not return abstracts (use pubmed_fetch_abstracts). E-utilities: esummary.fcgi?db=pubmed.

Endpoints

URLTransportStateLatencyChecked
https://pubmed-ncbi-e-utilities.usefulapi.io/mcp streamable-http answering 156 ms 8 min ago

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NCBI PubMed MCP by usefulapi — questions

Answers built from our own checks of this server.

What can NCBI PubMed MCP by usefulapi do?
It exposes 5 tools, read directly from the server on our last check. Among them: pubmed_database_info, pubmed_fetch_abstracts, pubmed_related, pubmed_search, pubmed_summary. The full list with descriptions is on this page — we take it from the server itself via tools/list, not from a README. How MCP servers expose tools in the first place →
Is NCBI PubMed MCP by usefulapi working right now?
We send a real MCP handshake every 15 minutes. Over the last 24 hours 91 of 91 checks got a reply (100.0%), average response time 169 ms. The bar chart above shows every period we have measured.
How do I connect NCBI PubMed MCP by usefulapi?
Copy the ready config from this page. We generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each in the form that client actually reads. It is a remote server, so there is nothing to install — the client connects to the address.
Does NCBI PubMed MCP by usefulapi need an API key?
No. NCBI PubMed MCP by usefulapi completed a full MCP handshake with us as an anonymous client and listed its tools without asking for anything. All 5 of them are readable on this page. This is what we observed, not what the docs claim.
How fast is NCBI PubMed MCP by usefulapi?
It answers our handshake in 169 ms on average, which is faster than 77% of all working MCP servers we measure. That puts it in the quick quarter of the ecosystem. The comparison comes from our own checks across the whole registry, every 15 minutes.
Is NCBI PubMed MCP by usefulapi open source?
The code is open source: it is published under the MIT licence, written in JavaScript, 1 stars on GitHub and 1 open issue. The licence covers the code in the repository, not the hosted service at pubmed-ncbi-e-utilities.usefulapi.io, which runs on its operator's own terms.