Ncbi Eutils
NPM · @PIPEWORX/MCP-NCBI-EUTILS · 2 COMPONENTS
NCBI E-utilities MCP — federated Entrez search/fetch.
Available components
Last scanned (7 hours ago)
Scores higher than 72% of npm servers
Category Health and Science
How this component scores in each security and reliability category. Every signal is checked automatically from public evidence about the published package, including repeated runs of it in an isolated sandbox, and we only credit what we can confirm. How we score → Why this is hard to score →
Supply Chain Security100
- No malware found by supply-chain analysis.Pass
- No known CVEs affecting this package version or its production dependencies.Pass
- No install/post-install scripts declared.Pass
- No production dependencies, so there is no dependency health to assess. View diagnostics → Pass
Provenance & Transparency97
- Source repository is publicly reachable at the declared URL. View diagnostics → Pass
- Cryptographically verified build provenance (signed, bound to pipeworx-io/mcp-ncbi-eutils). View diagnostics → Pass
- Clear OSI-approved license (MIT).Pass
- Actively maintained (last published 2 days ago).Pass
- Disclosure check failed: no security disclosure policy was found in the source repository. See how to fix → Fail
Schema Quality & AI Usability69
- AI-judged instruction clarity (good).Pass
- Tool/resource definitions use about 770 tokens (~96/item across 8 items; 8 tools + 0 resources), lean.Pass
- Usage-examples check failed: none of the tools include examples. See how to fix → Fail
Stability & Change Management23
- Stability observed for 7 of 30 days with no destabilising changes; credit accrues until the full window elapses.Partial
Tool Coverage83
- 100% of tools have a non-trivial description (not blank, and not just the tool's name).Pass
- 48% of tool parameters carry a description.Partial
Tool Safety100
- No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.Pass
- We read all 8 captured tool definition(s), and no name or description among them implies an irreversible operation.Pass
- An AI judge read all 9 captured unit(s) of tool text and found none that tries to manipulate the model reading it.Pass
Capabilities100
- Implements a supported MCP spec version (2025-11-25); the latest is 2026-07-28.Pass
Every change we have recorded for this component, newest first. Security-relevant changes are always shown. ▲ marks a change for the better, ▼ a change for the worse; unmarked changes are neutral.
- 5 Nov 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 20 to 23. That category is still filling its 30-day observation window: 6 days of observed history at the previous scan, 7 at this one. The score rises as the window fills, whether or not the server changes.
- 4 Nov 26 +15
- Malware scan: unverified → pass ▲ security
- 3 Nov 26 −14
- Malware scan: pass → unverified ▼ security
- Package version: 0.2.0 → 0.2.1 functional
- 1 Nov 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 7 to 10. That category is still filling its 30-day observation window: 2 days of observed history at the previous scan, 3 at this one. The score rises as the window fills, whether or not the server changes.
- 30 Oct 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 0 to 3. That category is still filling its 30-day observation window: 0 days of observed history at the previous scan, 1 at this one. The score rises as the window fills, whether or not the server changes.
- 29 Oct 26 78
First indexed and scored.
Diagnostic detail from the automated scan of this channel: what the scanner observed at each step, so you can see exactly where a check passed or failed. It is informational only and never changes the trust score.
Captured 5 Nov 2026 · Analysed npm/@pipeworx/mcp-ncbi-eutils@0.2.1
Provenance Verified
A signed build attestation was found and verified, binding this exact artifact to the source repository it claims to come from.
| Result | Verified |
|---|---|
| Ecosystem | npm |
| Reason | Verified |
| Discovered via | Registry attestation endpoint |
| Source repo | pipeworx-io/mcp-ncbi-eutils |
| Certificate issuer | https://token.actions.githubusercontent.com |
| Certificate SAN | https://github.com/pipeworx-io/mcp-ncbi-eutils/.github/workflows/publish.yml@refs/heads/main |
| Rekor log index | 3655667918 |
| Predicate type | SLSA build provenance https://slsa.dev/provenance/v1 |
| Subject digest | sha512:5b96cc30fc7c662ef5cadb59f244d1fa5bdbb4d57f24d23868c1e3344da962fb04e11b57af078dc27434c15806f66609f2f9a41dfdb98aa9fbf403511 |
Background: How many MCP packages publish verified provenance →
Dependencies 0 packages
| Packages resolved | 0 |
|---|---|
| Tree resolution | Complete |
Background: SBOMs and build attestations, explained →
The tools this component advertises to a client, with an estimated token cost for each. Expand a tool to see its parameters and schema. The per-tool counts are indicative and are not scored directly; the schema's total context footprint is one signal in Schema Quality & AI Usability. A tool's description is untrusted text the model reads on every call, which is what makes this list a security surface and not just an inventory: how tool poisoning works →
efetch ~80
Full records. Returns text (XML/GenBank/FASTA/…) per rettype.
| Name | Type | Req | Description |
|---|---|---|---|
| db | string | yes | – |
| ids | array | yes | – |
| retmode | string | – | text (default) | xml | json |
| rettype | string | – | e.g. "abstract", "fasta", "gb", "xml" |
No output schema declared.
No examples provided.
egquery ~23
Global query across all Entrez databases.
| Name | Type | Req | Description |
|---|---|---|---|
| term | string | yes | – |
No output schema declared.
No examples provided.
einfo ~66
List all available Entrez databases (omit db) or return field definitions and link names for a specific database (e.g. db=pubmed). Use before esearch to discover valid search fields and databases.
| Name | Type | Req | Description |
|---|---|---|---|
| db | string | – | Optional db name; omit for global db list. |
No output schema declared.
No examples provided.
elink ~54
Links across databases.
| Name | Type | Req | Description |
|---|---|---|---|
| dbfrom | string | yes | – |
| dbto | string | yes | – |
| ids | array | yes | – |
| linkname | string | – | Specific link, e.g. "pubmed_protein" |
No output schema declared.
No examples provided.
esearch ~121
Search an Entrez database (e.g. pubmed, gene, nucleotide) by query term and return a list of matching UIDs (up to 10,000) with hit count. Supports pagination via retstart and sort (e.g. pub_date).
| Name | Type | Req | Description |
|---|---|---|---|
| db | string | yes | – |
| retmax | number | – | 1-10000 (default 20) |
| retstart | number | – | – |
| sort | string | – | e.g. "pub_date" (PubMed), "relevance" |
| term | string | yes | – |
No output schema declared.
No examples provided.
esummary ~68
Fetch document summaries for one or more Entrez UIDs in a given database (e.g. pubmed), returning title, authors, journal, and publication date without the full record body.
| Name | Type | Req | Description |
|---|---|---|---|
| db | string | yes | – |
| ids | array | yes | – |
| retstart | number | – | – |
No output schema declared.
No examples provided.
geo_search ~178
Search NCBI GEO (Gene Expression Omnibus) for expression series (GSE) by keywords, optionally filtered by organism and experiment type. Returns the matching series with title, organism, sample count, platform, type and release date, plus the total hit count. Follow up with geo_series for one accession.
| Name | Type | Req | Description |
|---|---|---|---|
| limit | number | – | 1-50 (default 10) |
| organism | string | – | Scientific name, e.g. "Homo sapiens", "Mus musculus" |
| query | string | yes | Free-text terms, e.g. "dyskeratosis congenita" or "telomere RNA-seq" |
| type | string | – | GEO experiment type, e.g. "Expression profiling by array", "Expression profiling by high throughput sequencing", "Methylation profiling by genome tiling array" |
No output schema declared.
No examples provided.
geo_series ~123
Look up an NCBI GEO (Gene Expression Omnibus) series by its GSE accession, e.g. GSE75310 -> title, organism, number of samples and their GSM ids, platform (GPL id and name), experiment type (expression profiling by array / high-throughput sequencing, methylation, ChIP-seq...), release date, summary, PubMed ids, BioProject and SRA study links. Use for any question naming a GSE expression series.
| Name | Type | Req | Description |
|---|---|---|---|
| accession | string | yes | GEO series accession, e.g. "GSE75310" |
No output schema declared.
No examples provided.
How do I install the Ncbi Eutils MCP server?
Ncbi Eutils runs locally as an npm package, launched with npx -y @pipeworx/mcp-ncbi-eutils. Ready-made configuration for Claude, Cursor, VS Code, Codex and 5 more is on this page, copied from each client's own documentation.
npm · @pipeworx/mcp-ncbi-eutils
claude mcp add pipeworx-io-ncbi-eutils -- npx -y @pipeworx/mcp-ncbi-eutils
What is the Ncbi Eutils MCP server?
Ncbi Eutils is an MCP server listed in the public MCP registry as io.github.pipeworx-io/ncbi-eutils. NCBI E-utilities MCP, federated Entrez search/fetch. This page covers its npm package (@pipeworx/mcp-ncbi-eutils).
Is the Ncbi Eutils MCP server safe to use?
Ncbi Eutils scores 82 out of 100 on VerifyMCP. We found no known CVEs affecting it as of 5 November 2026. It declares no install or post-install scripts. Its build provenance is signed and verified. That is a record of what we were able to check automatically, not an endorsement. The category breakdown on this page shows every signal behind the number, including the ones we could not confirm.
What tools does the Ncbi Eutils MCP server expose?
Ncbi Eutils exposes 8 tools: einfo, esearch, esummary, efetch, elink, and 3 more. Their descriptions and schemas cost roughly 713 tokens of context every time the server is loaded.
Is the Ncbi Eutils MCP server still maintained?
Ncbi Eutils is still listed as active in the MCP registry. We last reached this channel on 5 November 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.
What licence is the Ncbi Eutils MCP server under?
Ncbi Eutils declares the MIT licence, which is OSI-approved. That covers the source only, and says nothing about the cost of any service it calls.