Cancer.gov

aid: cancer-gov
name: Cancer.gov
url: https://raw.githubusercontent.com/api-evangelist/cancer-gov/refs/heads/main/apis.yml
accessModel:
  pricing: freemium
  onboarding: self-serve
  trial: false
  try_now: true
  public: false
  label: Freemium · Self-serve signup
  confidence: high
  source:
  - plans
  - authentication
  generated: '2026-07-22'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/cancer-gov.png
type: Index
tags:
- Cancer
- Federal Government
- Healthcare
- Research
- Clinical Trials
- Genomics
- Surveillance
- Open Data
access: Open
created: '2024-07-02'
modified: '2026-04-23'
position: Provider
specificationVersion: '0.19'
description: Cancer.gov is the web presence of the National Cancer Institute (NCI), the U.S. federal government's principal
  agency for cancer research and training. NCI and its partner programs expose a rich set of open APIs covering cancer clinical
  trials, genomic data, cancer-incidence surveillance, research data and models, terminology and vocabularies, and PDQ content
  — giving researchers, advocacy groups, clinicians, and application developers programmatic access to authoritative cancer
  data and content.
apis:
- aid: cancer-gov:clinical-trials-api
  name: NCI Clinical Trials Search API
  description: RESTful API that lets developers build applications, search tools, and digital platforms over NCI-supported
    cancer clinical trials data sourced from NCI's Clinical Trials Reporting Program (CTRP). The same API powers NCI's public
    Clinical Trials Search. Developers register for a free API key through the CTS Developer Accounts portal.
  humanURL: https://clinicaltrialsapi.cancer.gov/
  baseURL: https://clinicaltrialsapi.cancer.gov/api/v2
  tags:
  - Clinical Trials
  - CTRP
  - Research
  properties:
  - type: Documentation
    url: https://clinicaltrialsapi.cancer.gov/
  - type: Signup
    url: https://clinicaltrialsapi.cancer.gov/
  - type: ParentPage
    url: https://www.cancer.gov/syndication/api
- aid: cancer-gov:gdc-api
  name: NCI Genomic Data Commons (GDC) API
  description: The external-facing REST interface for the NCI Genomic Data Commons. Drives the GDC Data Portal and GDC Submission
    Portal and is open for programmatic access. Provides query, download, and submission endpoints for cancer genomics datasets
    including TCGA, TARGET, CPTAC, and other NCI-funded genomic programs.
  humanURL: https://gdc.cancer.gov/developers/gdc-application-programming-interface-api
  baseURL: https://api.gdc.cancer.gov
  tags:
  - Genomics
  - TCGA
  - Research Data
  properties:
  - type: Documentation
    url: https://docs.gdc.cancer.gov/API/Users_Guide/Getting_Started/
  - type: Reference
    url: https://docs.gdc.cancer.gov/Encyclopedia/pages/REST_API/
  - type: Portal
    url: https://portal.gdc.cancer.gov/
- aid: cancer-gov:seer-api
  name: NCI SEER API
  description: RESTful API for the Surveillance, Epidemiology, and End Results (SEER) Program. Supports SEER datasets plus
    staging APIs for cancer staging (TNM and Collaborative Stage algorithms), enabling developers to embed authoritative incidence,
    survival, and staging logic into their own systems.
  humanURL: https://api.seer.cancer.gov/
  baseURL: https://api.seer.cancer.gov
  tags:
  - Surveillance
  - Epidemiology
  - Staging
  - SEER
  properties:
  - type: Documentation
    url: https://api.seer.cancer.gov/docs
  - type: Portal
    url: https://api.seer.cancer.gov/
- aid: cancer-gov:modac-api
  name: NCI MoDaC API
  description: The NCI Model and Data Clearinghouse (MoDaC) API provides programmatic access to cancer research data, computational
    models, and associated tools hosted in MoDaC. Developers can search, retrieve metadata, and download model/data artifacts
    produced by NCI-funded research programs.
  humanURL: https://modac.cancer.gov/
  tags:
  - Research Data
  - Models
  - Clearinghouse
  properties:
  - type: Documentation
    url: https://modac.cancer.gov/swagger-ui/4.14.0/index.html
  - type: Portal
    url: https://modac.cancer.gov/
- aid: cancer-gov:evs-api
  name: NCI EVS Terminology API
  description: Enterprise Vocabulary Services (EVS) exposes NCI Thesaurus and NCI Metathesaurus content — over 192,000 concepts,
    154,000 textual definitions, 623,000 synonyms and 630,000 inter-concept relationships — through a search and browse API
    used to code, analyze, and share cancer and biomedical research information.
  humanURL: https://evs.nci.nih.gov/
  tags:
  - Terminology
  - Vocabulary
  - NCI Thesaurus
  properties:
  - type: Documentation
    url: https://evs.nci.nih.gov/
  - type: Explorer
    url: https://evsexplore.semantics.cancer.gov/
  - type: WhitePaper
    url: https://evs.nci.nih.gov/ftp1/NCI_Metathesaurus/EVS%20Metathesaurus%20White%20Paper.pdf
- aid: cancer-gov:syndication-services
  name: NCI Content Syndication Services
  description: A suite of syndicated content channels — RSS feeds, the NCI Dictionary Widget, and syndicated publication content
    — that partner sites and health platforms can embed to deliver authoritative cancer content sourced from cancer.gov.
  humanURL: https://www.cancer.gov/syndication
  tags:
  - Syndication
  - Content
  - Widgets
  - RSS
  properties:
  - type: Documentation
    url: https://www.cancer.gov/syndication
- aid: cancer-gov:cancer-gov-diseases-api
  name: Cancer.gov Diseases API
  description: The Diseases API from Cancer.gov — 1 operation(s) for diseases.
  humanURL: https://clinicaltrialsapi.cancer.gov/
  baseURL: https://clinicaltrialsapi.cancer.gov/api/v2
  tags:
  - Diseases
  properties:
  - type: OpenAPI
    url: openapi/cancer-gov-diseases-api-openapi.yml
- aid: cancer-gov:cancer-gov-interventions-api
  name: Cancer.gov Interventions API
  description: The Interventions API from Cancer.gov — 1 operation(s) for interventions.
  humanURL: https://clinicaltrialsapi.cancer.gov/
  baseURL: https://clinicaltrialsapi.cancer.gov/api/v2
  tags:
  - Interventions
  properties:
  - type: OpenAPI
    url: openapi/cancer-gov-interventions-api-openapi.yml
- aid: cancer-gov:cancer-gov-terms-api
  name: Cancer.gov Terms API
  description: The Terms API from Cancer.gov — 1 operation(s) for terms.
  humanURL: https://clinicaltrialsapi.cancer.gov/
  baseURL: https://clinicaltrialsapi.cancer.gov/api/v2
  tags:
  - Terms
  properties:
  - type: OpenAPI
    url: openapi/cancer-gov-terms-api-openapi.yml
- aid: cancer-gov:cancer-gov-trials-api
  name: Cancer.gov Trials API
  description: The Trials API from Cancer.gov — 2 operation(s) for trials.
  humanURL: https://clinicaltrialsapi.cancer.gov/
  baseURL: https://clinicaltrialsapi.cancer.gov/api/v2
  tags:
  - Trials
  properties:
  - type: OpenAPI
    url: openapi/cancer-gov-trials-api-openapi.yml
common:
- type: AgenticAccess
  url: agentic-access/cancer-gov-agentic-access.yml
- type: DomainSecurity
  url: security/cancer-gov-domain-security.yml
- type: Authentication
  url: authentication/cancer-gov-authentication.yml
- type: GitHubOrganization
  url: https://github.com/NCIOCPL
- type: Website
  url: https://www.cancer.gov/
- type: Portal
  url: https://api.cancer.gov/
- type: SyndicationServices
  url: https://www.cancer.gov/syndication
- type: DataScience
  url: https://datascience.cancer.gov/
- type: OpenDataPolicy
  url: https://www.cancer.gov/research/resources/open-science
- type: PrivacyPolicy
  url: https://www.cancer.gov/policies/privacy-security
- type: LicensingAndReuse
  url: https://www.cancer.gov/policies/copyright-reuse
- url: https://www.cancer.gov/publishedcontent/rss/news-events/cancer-currents-blog.rss
  type: Blog
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com