generated: '2026-09-06'
method: searched
source: >-
  registry.npmjs.org, pypi.org, github.com and the ClinicalTrials.gov developer pages
  (https://clinicaltrials.gov/data-api, https://clinicaltrials.gov/data-api/api)
summary:
  official_count: 0
  third_party_count: 4
  finding: >-
    The National Library of Medicine publishes NO first-party client library for the
    ClinicalTrials.gov Data API v2 in any package registry, and the developer pages link
    to none. The GitHub account the catalog previously pointed at
    (https://github.com/clinicaltrialsgov) returns HTTP 404 — no NLM-owned source
    repository for this API exists on GitHub. Every package below is community-built
    against the public v2 REST API; none is endorsed by NLM/NIH. Recorded so the absence
    of an official SDK is a measured fact rather than an unchecked gap.
official_sdks: []
packages:
- name: clinicaltrialsgov-mcp-server
  registry: npm
  official: false
  version: 2.9.3
  published: '2026-09-03'
  url: https://www.npmjs.com/package/clinicaltrialsgov-mcp-server
  repository: https://github.com/cyanheads/clinicaltrialsgov-mcp-server
  language: TypeScript
  note: >-
    Community MCP server wrapping the v2 REST API (search, study detail, aggregate
    statistics). Actively maintained; the most current third-party distribution found.
- name: '@ncbijs/clinical-trials'
  registry: npm
  official: false
  version: 0.1.1
  published: '2026-05-06'
  url: https://www.npmjs.com/package/@ncbijs/clinical-trials
  repository: https://github.com/gagle/ncbijs
  language: TypeScript
  note: >-
    Typed community client for the v2 API. The "ncbijs" scope is a community project name,
    not an NCBI/NLM-owned namespace.
- name: pytrials
  registry: pypi
  official: false
  version: 1.0.0
  published: '2024-05-01'
  url: https://pypi.org/project/pytrials/
  repository: https://github.com/jvfe/pytrials
  language: Python
  note: >-
    The most widely used Python wrapper. Last release predates several API releases
    (the live API reports version 2.0.5 as of 2026-09-06) — a decay signal for consumers.
- name: clinical-trials-gov
  registry: npm
  official: false
  version: 1.2.0
  published: '2018-01-29'
  url: https://www.npmjs.com/package/clinical-trials-gov
  repository: https://github.com/arronhunt/clinical-trials-gov
  language: JavaScript
  note: >-
    Abandoned. Written against the CLASSIC ClinicalTrials.gov API, which was retired in
    June 2024 — /api/query/full_studies now returns HTTP 404. This package cannot work.