Cancer.gov
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.
Cancer.gov publishes 48 APIs on the APIs.io network, including Diseases API, Interventions API, Terms API, and 45 more. Tagged areas include Cancer, Federal Government, Healthcare, Research, and Clinical Trials.
Cancer.gov’s developer surface includes authentication, engineering blog, CLI, changelog, documentation, API reference, signup flow, and 40 more developer resources.
What this lets a business do 1
Business capabilities this provider's published APIs can perform, derived from its own contracts. Browse all capabilities →
Kin Score
APIs 48
Individual APIs this provider publishes, each with its own machine-readable definition.
NCI Clinical Trials Search API
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 Report...
NCI Genomic Data Commons (GDC) API
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, do...
NCI Content Syndication Services
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 ...
Cancer.gov Diseases API
The Diseases API from Cancer.gov — 1 operation(s) for diseases.
Cancer.gov Interventions API
The Interventions API from Cancer.gov — 1 operation(s) for interventions.
Cancer.gov Terms API
The Terms API from Cancer.gov — 1 operation(s) for terms.
Cancer.gov Trials API
The Trials API from Cancer.gov — 2 operation(s) for trials.
Cancer.gov Application version endpoint API
The Application version endpoint API from Cancer.gov — 1 operation(s) for application version endpoint.
Cancer.gov Asset Details Controller API
The asset-details-controller API from Cancer.gov — 1 operation(s) for asset-details-controller.
Cancer.gov Autosuggest API
The Autosuggest API from Cancer.gov — 4 operation(s) for autosuggest.
Cancer.gov Concept endpoints API
The Concept endpoints API from Cancer.gov — 21 operation(s) for concept endpoints.
Cancer.gov Delete Collection Controller API
The delete-collection-controller API from Cancer.gov — 1 operation(s) for delete-collection-controller.
Cancer.gov Delete Data File Controller API
The delete-data-file-controller API from Cancer.gov — 1 operation(s) for delete-data-file-controller.
Cancer.gov Delete Predictions Controller API
The delete-predictions-controller API from Cancer.gov — 1 operation(s) for delete-predictions-controller.
Cancer.gov Disease API
Hematopoietic, lymphoid neoplasms and solid tumor diseases
Cancer.gov Doe Collection Controller API
The doe-collection-controller API from Cancer.gov — 1 operation(s) for doe-collection-controller.
Cancer.gov Doe Create Bulk Datafile Controller API
The doe-create-bulk-datafile-controller API from Cancer.gov — 1 operation(s) for doe-create-bulk-datafile-controller.
Cancer.gov Doe Create Collection Controller API
The doe-create-collection-controller API from Cancer.gov — 1 operation(s) for doe-create-collection-controller.
Cancer.gov Doe Create Datafile Controller API
The doe-create-datafile-controller API from Cancer.gov — 1 operation(s) for doe-create-datafile-controller.
Cancer.gov Doe Download Controller API
The doe-download-controller API from Cancer.gov — 1 operation(s) for doe-download-controller.
Cancer.gov Doe Download Files Controller API
The doe-download-files-controller API from Cancer.gov — 1 operation(s) for doe-download-files-controller.
Cancer.gov Doe Retry Download Task Controller API
The doe-retry-download-task-controller API from Cancer.gov — 1 operation(s) for doe-retry-download-task-controller.
Cancer.gov Doe Retry Uploadtask Controller API
The doe-retry-uploadtask-controller API from Cancer.gov — 1 operation(s) for doe-retry-uploadtask-controller.
Cancer.gov Doe Sync Download Controller API
The doe-sync-download-controller API from Cancer.gov — 1 operation(s) for doe-sync-download-controller.
Cancer.gov Drugs API
The Drugs API from Cancer.gov — 6 operation(s) for drugs.
Cancer.gov Glossary API
A glossary of cancer-related terms
Cancer.gov Hcpcs API
Healthcare Common Procedure Coding Systems (HCPCS) nomenclatures
Cancer.gov History endpoints API
The History endpoints API from Cancer.gov — 2 operation(s) for history endpoints.
Cancer.gov Home Controller API
The home-controller API from Cancer.gov — 1 operation(s) for home-controller.
Cancer.gov Mapset endpoints API
The Mapset endpoints API from Cancer.gov — 3 operation(s) for mapset endpoints.
Cancer.gov Metadata endpoints API
The Metadata endpoints API from Cancer.gov — 24 operation(s) for metadata endpoints.
Cancer.gov Mph API
Multiple Primary and Histology Coding Rules
Cancer.gov Naaccr API
NAACCR Documentation
Cancer.gov Ndc API
A searchable mirror of National Drug Codes (NDC)
Cancer.gov Perform Inferencing Controller API
The perform-inferencing-controller API from Cancer.gov — 2 operation(s) for perform-inferencing-controller.
Cancer.gov Recode API
Recode algorithms
Cancer.gov Release Notes Notifications Controller API
The release-notes-notifications-controller API from Cancer.gov — 1 operation(s) for release-notes-notifications-controller.
Cancer.gov Resource API
The Resource API from Cancer.gov — 1 operation(s) for resource.
Cancer.gov Resources API
The Resources API from Cancer.gov — 1 operation(s) for resources.
Cancer.gov Rest API Common Controller API
The rest-api-common-controller API from Cancer.gov — 17 operation(s) for rest-api-common-controller.
Cancer.gov Rx API
Antineoplastic drugs database
Cancer.gov Search API
The Search API from Cancer.gov — 2 operation(s) for search.
Cancer.gov Search endpoint API
The Search endpoint API from Cancer.gov — 4 operation(s) for search endpoint.
Cancer.gov Staging API
Staging Algorithms
Cancer.gov Subset endpoints API
The Subset endpoints API from Cancer.gov — 3 operation(s) for subset endpoints.
Cancer.gov Surgery API
SEER Site-Specific Surgery Codes
Cancer.gov Best Bets API
The Best Bets API from Cancer.gov — 2 operation(s) for best bets.
Cancer.gov Health Check API
The Health Check API from Cancer.gov — 1 operation(s) for health check.
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Open Collections 6
Open, tool-agnostic API collections (OpenAPI-derived and Bruno).
API Collection
OPEN COLLECTIONNCI Clinical Trials Search Diseases API
OPEN COLLECTIONNCI Clinical Trials Search Diseases Interventions API
OPEN COLLECTIONNCI Clinical Trials Search Diseases Terms API
OPEN COLLECTIONNCI Clinical Search Diseases Trials API
OPEN COLLECTIONNCI Clinical Trials Search API
OPEN COLLECTIONMCP Servers 1
Model Context Protocol servers that expose these APIs to AI agents.
Cancer.gov MCP Server
MCP SERVERPricing Plans 1
Published pricing tiers and plan structures.
Rate Limits 1
Documented rate limits and quota policies.
Cancer Gov Rate Limits
RATE LIMITSFinOps 1
Cost, billing, and metering signals for API financial operations.
Cancer Gov Finops
FINOPSSecurity Posture 2
Authentication, domain security, vulnerability disclosure, and trust-center signals.
Agentic Access 1
Recommended x-agentic-access execution contracts for AI agents.
Resources
Get Started 3
Portal, sign-up, and the first successful call
Documentation 3
Reference material describing how the API behaves
Agent Surfaces 4
MCP servers, agent skills, and machine-readable catalogs
Design & Contract 6
Pagination, idempotency, versioning, errors, and events
Build 5
SDKs, sample code, and the tooling you integrate with
Access & Security 2
Authentication, authorization, and security posture
Operate 4
Status, limits, changes, and where to get help
Commercial 3
Pricing, plans, and the legal terms of use
Company 3
The organization behind the API
Other 14
Properties that don't map to a standard resource type
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Source (apis.yml)
Work with this as data
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