STRING

name: STRING
description: 'STRING is a protein-protein interaction network database providing scored associations between proteins across
  thousands of organisms. The REST API enables programmatic access to interaction scores, network visualizations, functional
  enrichment analysis, homology data, and protein annotations. STRING integrates data from genomic context, co-expression,
  text mining, biochemical and genetic experiments, and curated databases.

  '
deliveryModel:
  model: saas
  open_source: false
  commercial: true
  callable_host: true
  label: Hosted service · you call their endpoint
  confidence: high
  source:
  - openapi
  - pricing
  generated: '2026-08-28'
  method: derived
specificationVersion: '0.23'
accessModel:
  pricing: free
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Free
  confidence: low
  source:
  - plans
  - security
  generated: '2026-11-06'
  method: derived
image: https://string-db.org/images/logo/logo_medium.png
tags:
- Bioinformatics
- Proteins
- Genomics
- Life Sciences
- Research
- Open Data
url: https://string-db.org
apis:
- aid: string-db:string-db-annotation-api
  name: STRING Annotation API
  description: Functional annotations and term lookup
  humanURL: https://string-db.org/help/api/
  tags:
  - Annotation
  tags_raw:
  - annotation
  properties:
  - type: OpenAPI
    url: openapi/string-db-annotation-api-openapi.yml
  - type: Documentation
    url: https://string-db.org/help/api/
- aid: string-db:string-db-enrichment-api
  name: STRING Enrichment API
  description: Functional enrichment analysis
  humanURL: https://string-db.org/help/api/
  tags:
  - Data Enrichment
  tags_raw:
  - enrichment
  properties:
  - type: OpenAPI
    url: openapi/string-db-enrichment-api-openapi.yml
  - type: Documentation
    url: https://string-db.org/help/api/
- aid: string-db:string-db-homology-api
  name: STRING Homology API
  description: Protein homology and similarity scores
  humanURL: https://string-db.org/help/api/
  tags:
  - Homology
  tags_raw:
  - homology
  properties:
  - type: OpenAPI
    url: openapi/string-db-homology-api-openapi.yml
  - type: Documentation
    url: https://string-db.org/help/api/
- aid: string-db:string-db-identifiers-api
  name: STRING Identifiers API
  description: Map protein names and synonyms to STRING identifiers
  humanURL: https://string-db.org/help/api/
  tags:
  - Identifiers
  tags_raw:
  - identifiers
  properties:
  - type: OpenAPI
    url: openapi/string-db-identifiers-api-openapi.yml
  - type: Documentation
    url: https://string-db.org/help/api/
- aid: string-db:string-db-network-api
  name: STRING Network API
  description: Retrieve protein-protein interaction networks
  humanURL: https://string-db.org/help/api/
  tags:
  - Networks
  tags_raw:
  - network
  properties:
  - type: OpenAPI
    url: openapi/string-db-network-api-openapi.yml
  - type: Documentation
    url: https://string-db.org/help/api/
- aid: string-db:string-db-utility-api
  name: STRING Utility API
  description: Utility endpoints (version, links, API key)
  humanURL: https://string-db.org/help/api/
  tags:
  - Utility
  tags_raw:
  - utility
  properties:
  - type: OpenAPI
    url: openapi/string-db-utility-api-openapi.yml
  - type: Documentation
    url: https://string-db.org/help/api/
- aid: string-db:string-db-valuesranks-api
  name: STRING Valuesranks API
  description: Values/Ranks GSEA-like enrichment (requires API key)
  humanURL: https://string-db.org/help/api/
  tags:
  - valuesranks
  properties:
  - type: OpenAPI
    url: openapi/string-db-valuesranks-api-openapi.yml
  - type: Documentation
    url: https://string-db.org/help/api/
common:
- type: Plans
  url: plans/plans.yml
- type: RateLimits
  url: rate-limits/rate-limits.yml
- type: FinOps
  url: finops/finops.yml
- url: https://www.string-db.org/blog/
  type: Blog
- type: Website
  url: https://www.string-db.org/
- type: DomainSecurity
  url: security/string-db-domain-security.yml
- type: TermsOfService
  url: https://string-db.org/cgi/info?footer_active_subpage=cookies
- type: Licensing
  url: https://string-db.org/cgi/access?footer_active_subpage=licensing
- type: UsageGuidelines
  url: https://string-db.org/cgi/access?footer_active_subpage=usage
- type: APIDocumentation
  url: https://string-db.org/help/api/
- type: Downloads
  url: https://string-db.org/cgi/download
modified: '2026-10-06'
maintainers:
- FN: STRING Consortium
  url: https://string-db.org