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Cancer.gov Search endpoint API

The Search endpoint API from Cancer.gov — 4 operation(s) for search endpoint.

Cancer.gov Search endpoint API is one of 48 APIs that Cancer.gov publishes on the APIs.io network, described by a machine-readable OpenAPI specification.

Tagged areas include Search endpoint. The published artifact set on APIs.io includes an OpenAPI specification, API documentation, rate-limit docs, and an API reference.

This API exposes 5 operations across 4 paths, and defines 18 schemas. It is described by OpenAPI 3.2.0, at version 2.4.1.RELEASE.

Requests are made against a single base URL, /.

5 operations 4 paths 18 schemas 3 GET2 POST

Metadata

The identity and technical contract details declared by the specification.

Specification
OpenAPI 3.2.0
API Version
2.4.1.RELEASE
Base URL
https://clinicaltrialsapi.cancer.gov/api/v2
Contact
Terms of Service
Resource Areas
1

Paths & Operations 5

Across 4 paths, the API surfaces 5 operations — 3 GET, 2 POST. Each is listed below with its method, path, parameters, and response codes.

Search endpoint 5
POST
/api/v1/sparql/{terminology}
Get SPARQL query results
getSparqlBindings 5 params body → 400417200
GET
/api/v1/concept/{terminology}/search
Get concept search results for a specified terminology
searchSingleTerminology 18 params → 400417200
POST
/api/v1/concept/{terminology}/search
Get concept search results for a specified terminology
searchSingleTerminologySparql 19 params body → 400417200
GET
/api/v1/sparql/{terminology}/prefixes
Get default prefixes used by SPARQL queries
getSparqlPrefixes 1 param → 400417200
GET
/api/v1/concept/search
Get concept search results
search 18 params → 400417404200

Schemas 18

The contract defines 18 schemas that model the data the API accepts and returns. The most detailed are Concept (31 properties), Mapping (23 properties), SearchCriteria (21 properties), Synonym (12 properties). Each schema is shown below with its type and property counts.

ConceptResultList
object
Represents a list of concepts returned from a search or find call
6 properties
History
object
Represents a history record, generally for a retired concept
8 properties
MapResultList
object
Represents a list of objects returned from a find call
6 properties
Concept
object
Represents a concept in a terminology
31 properties
Role
object
Represents a (logically) defining relationship between two concepts
10 properties
Paths
object
Represents a list of paths
3 properties
SearchCriteria
object
Criteria for a search or find operation
21 properties
Definition
object
Represents a text definition for a concept
8 properties
ConceptMinimal
object
Represents minimal information about a concept in a terminology
7 properties
Path
object
Represents a path (or partial path) in a hierarchy
4 properties
RestException
object
Payload for JSON error responses
5 properties
Association
object
Represents a non-defining (in a logical sense) relationship between two concepts
10 properties
Qualifier
object
Represents a type/value qualifier on a concept element
5 properties
Property
object
Represents a type/value property on a concept
8 properties
Synonym
object
Represents one of the (potentially many) names for a concept
12 properties
DisjointWith
object
Represents an assertion of disjointness between two concepts
10 properties
Extensions
object
Generally unset, this is used for certain special cases
10 properties
Mapping
object
Represents a map from a concept to concepts in other terminologies
23 properties

Specification

The full machine-readable OpenAPI contract behind this narrative.

Source

cancer-gov-search-endpoint-api-openapi.yml Raw ↑

Other APIs Cancer.gov publishes across the network.

NCI Clinical Trials Search API
NCI Genomic Data Commons (GDC) API
NCI Content Syndication Services
Cancer.gov Diseases API
Cancer.gov Interventions API
Cancer.gov Terms API
Cancer.gov Trials API
Cancer.gov Application version endpoint API
Cancer.gov Asset Details Controller API
Cancer.gov Autosuggest API
Cancer.gov Concept endpoints API
Cancer.gov Delete Collection Controller API
Where this information came from

This is an independent, third-party profile of Cancer.gov Search endpoint API, published by API Evangelist. We do not operate, host, resell, or support these APIs, and we are not affiliated with or endorsed by the company unless stated above. Everything here is built from publicly available information — the company's own site, developer portal, documentation, public repositories, and the specifications it publishes for public use. Nothing is obtained by breaching a system, defeating an access control, or using credentials.

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