# API Harmony

**Canonical:** https://apis.io/providers/api-harmony/  
**Website:** https://developer.ibm.com/apiharmony/  
**APIs profiled:** 1

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.

## Kin Score — 10.1 / 100 (minimal)

Scored 2026-08-20 under rubric 0.12.0. Trend: flat (+0.0 from 10.1).

| Facet | Score |
|---|---|
| Discoverability | 59.3 |
| Contract Quality | 0.0 |
| Governance | 0.0 |
| Contract Governance | 0.0 |
| Operational Transparency | 7.9 |
| Developer Ergonomics | 0.0 |
| Commercial Clarity | 15.8 |
| Access Clarity | 15.8 |

## Agent readiness — 3.0 (human-only)

| Dimension | Value |
|---|---|
| Spec Presence | no |
| Agentic Access | no |
| Reversibility Documented | no |
| MCP Server | no |
| Auth Clarity | no |
| Idempotency | no |
| Error Semantics | no |
| OpenAPI Examples | no |
| Rate Limit Signal | documented |
| Event Surface Described | no |
| Agent Skills | no |
| Well Known Catalog | no |
| Consent Identity | no |
| Agent Card | no |
| Dry Run Mode | no |

## Access

Freemium — onboarding: unknown, pricing: freemium, trial: no (confidence: medium).

## APIs (1)

- **API Harmony Service** — API Harmony was an intelligent API matchmaking service that used graph technology and machine learning to search public APIs, reveal relationships between them, make recommendat...

## Security (2)

- **Api Harmony Domain Security** — TLSv1.3 · HSTS · DMARC
- **Api Harmony Vulnerability Disclosure** — Hackerone · security.txt · contact published

## Plans (1)

- **Api Harmony Plans Pricing**

## Use cases (4)

- **Cloud API Discovery** — Help developers find the right APIs for cloud-based application development on IBM Bluemix.
- **API Compatibility Analysis** — Identify which APIs can be combined for a given use case without conflicts or duplication.
- **API Portfolio Management** — API providers could publish and promote their services to the broader developer ecosystem.
- **Microservices Integration** — Support microservices architectures by identifying optimal third-party API combinations.

## Tags

API Aggregation, API Discovery, API Recommendation, Graph Technology, IBM, Machine-Learning

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Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/providers/api-harmony/). Scores are computed from the provider's own public artifacts under a published rubric.