# PredictionIO

**Canonical:** https://apis.io/providers/predictionio/  
**Website:** https://predictionio.apache.org  
**APIs profiled:** 2

Apache PredictionIO is an open source machine learning server that lets developers and data scientists build, deploy, and serve predictive engines as web services. Originally the commercial product prediction.io from TappingStone, it was acquired by Salesforce in 2016, donated to the Apache Software Foundation, and graduated as a top-level Apache project before being retired to the Apache Attic. It exposes a REST-based Event Server for collecting event data and an Engine Query API for real-time predictions, built on Apache Spark, MLlib, HBase, Elasticsearch, and Akka HTTP, with official SDKs for Python, Ruby, PHP, and Scala/Java. This profile enriches the original portfolio-lead stub.

## Kin Score — 16.8 / 100 (emerging)

Scored 2026-08-20 under rubric 0.12.0. Trend: flat (+0.0 from 16.8).

| Facet | Score |
|---|---|
| Discoverability | 59.3 |
| Contract Quality | 0.0 |
| Governance | 0.0 |
| Contract Governance | 0.0 |
| Operational Transparency | 10.5 |
| Developer Ergonomics | 47.6 |
| Commercial Clarity | 0.0 |
| Access Clarity | 0.0 |

## Agent readiness — 8.5 (agent-aware)

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

## Access

Self-serve signup — onboarding: self-serve, pricing: unknown, trial: no (confidence: medium).

## APIs (2)

- **PredictionIO Event Server API** — REST API for importing and querying event data used to train prediction engines. Authenticated with a per-app access key passed as the accessKey query parameter; JSON request/re...
- **PredictionIO Engine Query API** — REST API exposed by a deployed prediction engine that responds to prediction queries in real time (POST /queries.json). Unauthenticated by default.

## Security (1)

- **Predictionio Authentication** — 2 schemes

## Tags

Company, Machine-Learning, Artificial Intelligence, Predictive Analytics, Recommendation Engine, Open-Source, Apache, Event Server, Retired

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