Ninetailed

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.

1 APIs 0 Features

PersonalizationExperimentationA/B TestingAudience SegmentationFeature FlagsHeadless CMSEdge ComputingContent Management

Sources

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-productions.s3.amazonaws.com/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-productions.s3.amazonaws.com/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: [email protected]

Ninetailed

APIs

Ninetailed Experience API

Semantic Vocabularies

Ninetailed Context

Resources

Sources