API Harmony

aid: api-harmony
name: API Harmony
description: API Harmony was an API discovery and recommendation tool from IBM Research that used graph-based search, machine
  learning, and cognitive technologies to help developers find, compare, and select compatible APIs. It was offered as a cloud
  service on IBM Bluemix and has since been discontinued.
type: Index
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
tags:
- API Aggregation
- API Discovery
- API Recommendation
- Graph Technology
- IBM
- Machine Learning
url: https://raw.githubusercontent.com/api-evangelist/api-harmony/refs/heads/main/apis.yml
created: '2026-03-26'
modified: '2026-04-19'
specificationVersion: '0.19'
apis:
- aid: api-harmony:api-harmony-service
  name: API Harmony Service
  description: API Harmony was an intelligent API matchmaking service that used graph technology and machine learning to search
    public APIs, reveal relationships between them, make recommendations, and identify gaps. It anticipated what developers
    would need to build applications and suggested optimal API combinations. The service has been discontinued.
  humanURL: https://developer.ibm.com/api/view/apiharmony-prod:apih-product:title-API_Harmony
  tags:
  - API Discovery
  - API Recommendation
  - Discontinued
  - Graph Search
  - Machine Learning
  properties:
  - type: Documentation
    url: https://developer.ibm.com/api/view/apiharmony-prod:apih-product:title-API_Harmony
  - type: Website
    url: https://apiharmony-open.mybluemix.net/public
common:
- type: Website
  url: https://developer.ibm.com/apiharmony/
- type: Documentation
  url: https://developer.ibm.com/api/view/apiharmony-prod:apih-product:title-API_Harmony
- type: Research
  url: https://research.ibm.com/publications/api-harmony-graph-based-search-and-selection-of-apis-in-the-cloud
- type: Article
  url: https://www.linuxjournal.com/node/1338947
- type: Features
  data:
  - name: API Graph Search
    description: Graph-based search across public APIs to reveal relationships and connections between services.
  - name: API Recommendation
    description: Machine learning-powered recommendations for compatible APIs based on developer intent and context.
  - name: API Composition Support
    description: Tooling to help developers compose multiple APIs into unified applications.
  - name: API Discovery
    description: Unified catalog and discovery interface for cloud-hosted and public APIs.
  - name: API Publishing
    description: Tools for API providers to publish and promote their APIs to the ecosystem.
  - name: Gap Identification
    description: Identifies gaps in the API ecosystem where no existing API satisfies a developer need.
- type: UseCases
  data:
  - name: Cloud API Discovery
    description: Help developers find the right APIs for cloud-based application development on IBM Bluemix.
  - name: API Compatibility Analysis
    description: Identify which APIs can be combined for a given use case without conflicts or duplication.
  - name: API Portfolio Management
    description: API providers could publish and promote their services to the broader developer ecosystem.
  - name: Microservices Integration
    description: Support microservices architectures by identifying optimal third-party API combinations.
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com