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STRING Annotation API

Functional annotations and term lookup

STRING Annotation API is one of 7 APIs that STRING publishes on the APIs.io network, described by a machine-readable OpenAPI specification.

Tagged areas include Annotation. The published artifact set on APIs.io includes an OpenAPI specification and API documentation.

This API exposes 3 operations across 3 paths, and defines 5 schemas. It is described by OpenAPI 3.2.0, at version 12.0.

Requests are made against a single base URL, https://string-db.org.

3 operations 3 paths 5 schemas 3 GET

Metadata

The identity and technical contract details declared by the specification.

Specification
OpenAPI 3.2.0
API Version
12.0
Base URL
https://string-db.org
Authentication
API Key
Terms of Service
Resource Areas
1

Authentication & Security 1

STRING Annotation API declares 1 security scheme for authenticating requests. An API key is passed in the query as api_key (ApiKeyAuth).

  • ApiKeyAuth — API key required only for Values/Ranks Enrichment endpoints. Obtain via POST /api/json/getapikey. All other endpoints are publicly accessible without authentic…

Paths & Operations 3

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

annotation 3

Functional annotations and term lookup

GET
/api/{format}/functional_annotation
Functional Annotation
getFunctionalAnnotation 5 params → 200400
GET
/api/{format}/functional_terms
Functional Terms
getFunctionalTerms 5 params → 200400
GET
/api/{format}/geneset_description
Gene Set Description
getGenesetDescription 4 params → 200400

Schemas 5

The contract defines 5 schemas that model the data the API accepts and returns. The most detailed are FunctionalAnnotation (7 properties), FunctionalTermResult (5 properties), Error (3 properties), GenesetDescription (2 properties). Each schema is shown below with its type and property counts.

TsvResponse
string
Tab-separated values response with header row
FunctionalAnnotation
object
Functional annotation for a protein
7 properties
Error
object
3 properties
GenesetDescription
object
Auto-generated description for a protein gene set
2 properties
FunctionalTermResult
object
Proteins associated with a specific functional term
5 properties

Specification

The full machine-readable OpenAPI contract behind this narrative.

Source

string-db-annotation-api-openapi.yml Raw ↑

Other APIs STRING publishes across the network.

STRING Enrichment API
STRING Homology API
STRING Identifiers API
STRING Network API
STRING Utility API
STRING Valuesranks API
Where this information came from

This is an independent, third-party profile of STRING Annotation 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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