Nci Evs MCP server

@pipeworx/nci-evs

NCI Thesaurus (NCIt) concepts and the other controlled vocabularies served by the NCI Enterprise Vocabulary Services REST API — the C-codes that CDISC, GDC, CTRP, SEER and the NCI trial systems all key on.

Part of Pipeworx — an MCP gateway connecting AI agents to 1679+ live data sources.

Tools

— name → code. Searches NCIt by default; also ICD-10, MedDRA, SNOMED CT, HGNC, GO and others served by the same API.

• evssearchconcepts(term, terminology?, type?, include?, pagesize?, fromrecord?)

name, definitions with source, every synonym with its term type and source, semantic types, and cross-terminology maps to ICD-O-3 / ICD-10 / MedDRA.

• evs_concept(code, terminology?, include?) — code → full record: preferred

which loaded version. A concept record is only interpretable against its version, so this is how you pin an answer.

• evsterminologies(latestonly?) — which vocabularies are queryable and at

roles, associations, inverse associations, descendants. Use it to expand a disease into its subtypes before querying trial or genomic data.

• evsconceptrelations(code, terminology?, kinds?) — parents, children,

Auth

Keyless.

Data sources

• — term search.
• — one concept.
• — relations.
• — loaded terminologies.

Traps

The API version prefix is /api/v1, not bare /. The paths in NCI's own prose omit it; without it every call 404s with a Spring "No static resource" body that looks like the endpoint was withdrawn.

Relations are separate endpoints, not an include. There is no /relationships path — it 404s. Parents, children, roles and associations are each their own sub-path. maps is the exception: it is an include value on the concept endpoint, not a sub-path. evsconceptrelations fetches the sub-paths in parallel and reports a per-kind count, so a kind that genuinely has no rows is distinguishable from one that failed.

include=minimal is the search default and omits definitions. A search hit carries only code / name / status until you ask for summary or full, which is why a "the API has no definitions" conclusion is usually an include-level problem.

Version strings move. version on a concept (e.g. NCIt 26.08e) is the monthly release. Two answers taken weeks apart can legitimately differ; quote the version when the code's meaning matters.

Quick Start

Add to your MCP client (Claude Desktop, Cursor, Windsurf, etc.):

{
  "mcpServers": {
    "nci-evs": {
      "url": "https://gateway.pipeworx.io/nci-evs/mcp"
    }
  }
}

What this endpoint actually serves

tools/list at https://gateway.pipeworx.io/nci-evs/mcp returns the tools in the table above plus the shared Pipeworx meta-tools — askpipeworx, discovertools, search_within, remember/recall and the rest of the gateway-wide set. So the tool count you see is larger than this table: a single-pack endpoint currently lists roughly 30 shared tools alongside the pack's own. The connection's initialize response states its exact scope, and is the authoritative answer for a given day.

This is deliberate, not multiplexing by accident. The meta-tools are what let a scoped connection answer a question this pack does not cover — via ask_pipeworx, which routes across the whole catalog — without you adding a second MCP server. There is currently no way to mount a pack endpoint without them; if the extra schemas cost you more context than the routing is worth, connect to the full gateway once rather than to several pack endpoints.

Shortened. The full README is on GitHub.