Insider

Insider (rebranded Insider One, useinsider.com now redirects to insiderone.com) is an AI-native customer engagement and personalization platform used by 2,000+ global brands. It unifies a Customer Data Platform (CDP), cross-channel journey orchestration (Architect), personalization, predictive segmentation, and behavioral analytics, delivering across Web, Email, SMS/RCS, WhatsApp, Web Push, Mobile App, Site Search, InStory and conversational CX. For developers it exposes a Unified Customer Database via the Upsert User Data API (POST unification.useinsider.com/api/user/v1/upsert, authenticated with X-REQUEST-TOKEN and X-PARTNER-NAME headers), a Product Catalog API, Web and Mobile (iOS, Android, React Native, Flutter, Cordova) SDKs, and an outbound "Call an API" journey channel. Recognized by Gartner and Forrester as a leader in personalization engines, CDP and omnichannel marketing platforms.

Insider publishes 1 API on the APIs.io network. Tagged areas include Company, Customer Engagement, Personalization, Customer Data Platform, and Marketing.

Insider’s developer surface includes documentation, API reference, getting-started guide, support, engineering blog, pricing, signup flow, and 16 more developer resources.

🌐 Visit website 📡 Source on GitHub

33.8/100 thin Agent 10/100 human only Full breakdown ↓
scored 2026-07-20 · rubric v0.4

1 APIs 0 Features

CompanyCustomer EngagementPersonalizationCustomer Data PlatformMarketingJourney OrchestrationOmnichannelCDPArtificial Intelligence

API Rating

API Evangelist Rating How this is scored →
scored 2026-07-20 · rubric v0.4

Composite quality — 33.8/100 · thin

Contract Quality 0.0 / 25

Developer Ergonomics 11.7 / 20

Commercial Clarity 12.1 / 20

Operational Transparency 0.7 / 13

Governance 0.0 / 12

Discoverability 9.3 / 10

Agent readiness — 10/100 · human only

Machine-Readable Contract 0 / 18

Agentic Access Contract 0 / 15

MCP Server 0 / 12

Machine-Readable Auth 10 / 10

Idempotency 0 / 9

Stable Error Semantics 0 / 8

Request/Response Examples 0 / 7

Rate-Limit Signaling 0 / 7

Typed Event Surface 0 / 6

Agent Skills 0 / 5

Well-Known Catalog 0 / 4

Consent & Bot Identity 0 / 3

Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. This rating is computed from github.com/api-evangelist/insider: open an issue to ask a question, or submit a pull request to add artifacts. Want it done for you? Prioritized profiling — $2,500 →

Get Started 4

Portal, sign-up, and the first successful call

DeveloperPortal

DeveloperPortal

GettingStarted

GettingStarted

SignUp

SignUp

Login

Documentation 2

Reference material describing how the API behaves

Documentation

Documentation

APIReference

APIReference

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

LLMsTxt

LLMsTxt

Design & Contract 3

Pagination, idempotency, versioning, errors, and events

Conventions

Conventions

Lifecycle

Lifecycle

Conformance

Conformance

Build 3

SDKs, sample code, and the tooling you integrate with

GitHubOrganization

GitHubOrganization

Packages

Packages

SDKs

SDKs

Access & Security 4

Authentication, authorization, and security posture

Authentication

Compliance

TrustCenter

DomainSecurity

Operate 1

Status, limits, changes, and where to get help

Support

Support

Commercial 3

Pricing, plans, and the legal terms of use

Pricing

Pricing

TermsOfService

TermsOfService

PrivacyPolicy

PrivacyPolicy

Company 2

The organization behind the API

Website

Website

Blog

Blog

Source (apis.yml)

aid: insider
name: Insider
description: Insider (rebranded Insider One, useinsider.com now redirects to insiderone.com) is an AI-native customer engagement
  and personalization platform used by 2,000+ global brands. It unifies a Customer Data Platform (CDP), cross-channel journey
  orchestration (Architect), personalization, predictive segmentation, and behavioral analytics, delivering across Web, Email,
  SMS/RCS, WhatsApp, Web Push, Mobile App, Site Search, InStory and conversational CX. For developers it exposes a Unified
  Customer Database via the Upsert User Data API (POST unification.useinsider.com/api/user/v1/upsert, authenticated with X-REQUEST-TOKEN
  and X-PARTNER-NAME headers), a Product Catalog API, Web and Mobile (iOS, Android, React Native, Flutter, Cordova) SDKs,
  and an outbound "Call an API" journey channel. Recognized by Gartner and Forrester as a leader in personalization engines,
  CDP and omnichannel marketing platforms.
url: https://raw.githubusercontent.com/api-evangelist/insider/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- 500-global
x-tier: stub
x-tier-reason: portfolio-lead
specificationVersion: '0.20'
created: '2026-07-17'
modified: '2026-07-19'
image: https://logo.clearbit.com/useinsider.com
tags:
- Company
- Customer Engagement
- Personalization
- Customer Data Platform
- Marketing
- Journey Orchestration
- Omnichannel
- CDP
- Artificial Intelligence
apis:
- name: Insider Upsert User Data API
  description: Send user profiles, attributes and events into Insider One's Unified Customer Database. POST JSON to the upsert
    endpoint authenticated with an API key (X-REQUEST-TOKEN) and partner name (X-PARTNER-NAME) header pair.
  humanURL: https://academy.insiderone.com/docs/upsert-user-data-api-integration-wizard-2
  baseURL: https://unification.useinsider.com/api/user/v1
  tags:
  - CDP
  - User Data
  - Events
  properties:
  - type: Authentication
    url: authentication/insider-authentication.yml
  - type: Conventions
    url: conventions/insider-conventions.yml
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: Website
  url: https://insiderone.com
- type: DeveloperPortal
  url: https://academy.insiderone.com/
- type: Documentation
  url: https://academy.insiderone.com/docs
- type: APIReference
  url: https://academy.insiderone.com/docs/upsert-user-data-api-integration-wizard-2
- type: GettingStarted
  url: https://academy.insiderone.com/docs/user-guides-welcome
- type: Support
  url: https://useinsiderhelp.zendesk.com/hc/en-us
- type: Blog
  url: https://insiderone.com/blog
- type: GitHubOrganization
  url: https://github.com/useinsider
- type: Pricing
  url: https://insiderone.com/request-a-demo/
- type: SignUp
  url: https://inone.useinsider.com/login
- type: Login
  url: https://inone.useinsider.com/login
- type: TermsOfService
  url: https://insiderone.com/terms-of-use/
- type: PrivacyPolicy
  url: https://insiderone.com/privacy-policy/
- type: LLMsTxt
  url: llms/insider-llms.txt
- type: Packages
  url: packages/insider-packages.yml
- type: SDKs
  url: packages/insider-packages.yml
- type: Authentication
  url: authentication/insider-authentication.yml
- type: Conventions
  url: conventions/insider-conventions.yml
- type: Lifecycle
  url: lifecycle/insider-lifecycle.yml
- type: Conformance
  url: conformance/insider-conformance.yml
- type: Compliance
  url: security/insider-trust-center.yml
- type: TrustCenter
  url: security/insider-trust-center.yml
- type: DomainSecurity
  url: security/insider-domain-security.yml
x-enrichment:
  date: '2026-07-19'
  status: backfilled
  pass: local-v1
  note: backfilled from .gitignore signal + verified work evidence