Ninetailed

aid: ninetailed
name: Ninetailed
description: Ninetailed (now Contentful Personalization) is an API-first personalization and experimentation platform for
  content-rich applications. It provides a REST-based Experience API for managing visitor profiles, defining audience segments,
  running A/B tests, and delivering personalized experiences at the edge. SDKs are available for JavaScript, React, Next.js,
  Node.js, and React Native.
type: Index
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
url: https://raw.githubusercontent.com/api-evangelist/ninetailed/refs/heads/main/apis.yml
created: '2026-06-13'
modified: '2026-06-13'
specificationVersion: '0.19'
tags:
- Personalization
- Experimentation
- A/B Testing
- Audience Segmentation
- Feature Flags
- Headless CMS
- Edge Computing
- Content Management
apis:
- name: Ninetailed Experience API
  description: The core REST API for the Ninetailed personalization platform. Returns visitor profiles and resolves which
    experience and variant to render based on audience rules. Deployed on the edge for high performance. Supports profile
    creation, updates, retrieval, deletion, event tracking, and batch event import for audience segmentation and A/B test
    delivery.
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  humanURL: https://www.contentful.com/developers/docs/ninetailed/experience-api/
  baseURL: https://experience.ninetailed.co/v2
  tags:
  - Profiles
  - Events
  - Personalization
  - A/B Testing
  - Audience Segmentation
  properties:
  - type: Documentation
    url: https://www.contentful.com/developers/docs/ninetailed/experience-api/
  - type: OpenAPI
    url: https://www.contentful.com/developers/docs/ninetailed/experience-api/
  contact:
  - FN: Ninetailed Support
    url: https://www.contentful.com/help/
common:
- type: Website
  url: https://www.contentful.com/products/personalization/
- type: Documentation
  url: https://www.contentful.com/developers/docs/ninetailed/
- type: GitHubOrg
  url: https://github.com/ninetailed-inc
- type: LinkedIn
  url: https://www.linkedin.com/company/ninetailed
- type: Blog
  url: https://medium.com/@Ninetailed
- type: Pricing
  url: https://www.contentful.com/pricing/
- type: StatusPage
  url: https://ninetailedstatus.com/
- type: X
  url: https://x.com/ninetailedhq
- type: ChangeLog
  url: https://www.contentful.com/developers/docs/ninetailed/ninetailed-changelog/
- type: Plans
  url: plans/ninetailed-plans-pricing.yml
- type: RateLimits
  url: rate-limits/ninetailed-rate-limits.yml
- type: FinOps
  url: finops/ninetailed-finops.yml
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com