Turnitin

Turnitin is an academic and research integrity company that for more than 20 years has provided plagiarism/similarity detection, AI-writing detection, online grading, and feedback tools for educators, researchers, and publishers. Its market-leading integrity services are exposed to third-party platforms through the RESTful Turnitin Core API (TCA), which lets an integrating product submit a document, generate a Similarity Report, and display it to users without leaving the host platform, plus a Learning Tools Interoperability (LTI) path for LMS integrations. TCA is SOC2 compliant and runs across international data centers. Turnitin was surfaced as a portfolio company of Norwest Venture Partners and enriched into the API Evangelist network from its public developer documentation.

Turnitin publishes 2 APIs on the APIs.io network. Tagged areas include Company, Education, EdTech, Academic Integrity, and Plagiarism Detection.

Turnitin’s developer surface includes documentation, API reference, support, engineering blog, authentication, sandbox, and 18 more developer resources.

🌐 Visit website 📡 Source on GitHub

40.5/100 developing ▬ flat Agent 3/100 human only saas Full breakdown ↓
scored 2026-09-08 · rubric v0.20.0

2 APIs

Company Education EdTech Academic IntegrityPlagiarism DetectionSimilarity AI Detection AssessmentResearch IntegrityPublishing LTI

Kin Score

Kin Score How this is scored →
scored 2026-09-08 · rubric v0.20.0

Composite quality — 40.5/100 · developing

Contract Quality 1.1 / 21

Developer Ergonomics 8.9 / 17

Access Clarity 6.0 / 17

Operational Transparency 3.2 / 11

Contract Governance 1.9 / 10

Discoverability 6.5 / 9

Regulatory Posture 12.2 / 15

Agent readiness — 3/100 · human only

Machine-Readable Contract 0 / 18

Agentic Access Contract 0 / 10

Documented Reversibility 0 / 6

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

A2A Agent Card 0 / 8

Dry-Run / Simulate Mode 0 / 4

Delegated User Identity 0 / 6

Protected Resource Metadata 0 / 5

Registration Without a Human 0 / 6

Agentic Commerce Well-Known Document 0 / 5

Regulatory Posture applies to this provider. Its tags matched the Education & Research regime, so Regulatory Posture carries 15 points of the composite. If this regime is wrong for your business, say so on your provider repo — the applicability map is public and we will correct it.

Create-or-Update Ergonomics could not be measured. We hold no machine-readable contract for this provider to read, so there is nothing to measure a write surface against. Excluded rather than scored zero: never-measured and measured-empty are different facts. Publishing an OpenAPI is what makes this facet — and several others — scorable at all.

The six quality facets above are damped to 85 points between them, because the conditional facet above carries the other 15. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 85% of its nominal weight, not 100%. The full arithmetic is at apis.io/rating/.

Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. Every facet and dimension name above is a link: it opens that measurement's own page — what it means, the exact checks that feed it, how the whole catalog distributes on it, and the providers at the top of it. This rating is computed from github.com/api-evangelist/turnitin: open an issue to ask a question, or submit a pull request to add artifacts. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

APIs 2

Individual APIs this provider publishes, each with its own machine-readable definition.

Turnitin Core API (TCA)

RESTful API for integrating Turnitin's integrity services into third-party platforms — submit a document, generate a Similarity Report, and display it to users. Authenticates wi...

Turnitin Learning Tools Interoperability (LTI)

LTI integration path for embedding Turnitin into learning management systems, as an alternative to the TCA REST surface.

Security Posture 3

Authentication, domain security, vulnerability disclosure, and trust-center signals.

Turnitin Authentication

apiKey · 1 scheme

SECURITY

Turnitin Domain Security

TLSv1.3 · DMARC

SECURITY

Turnitin Vulnerability Disclosure

security.txt · contact published

SECURITY

Resources

Get Started 3

Portal, sign-up, and the first successful call

DeveloperPortal

DeveloperPortal

Login

Sandbox

Sandbox

Documentation 2

Reference material describing how the API behaves

Documentation

Documentation

APIReference

APIReference

Agent Surfaces 2

MCP servers, agent skills, and machine-readable catalogs

WellKnown

WellKnown

LLMsTxt

LLMsTxt

Design & Contract 3

Pagination, idempotency, versioning, errors, and events

Conformance

Conformance

Conventions

Conventions

Lifecycle

Lifecycle

Build 1

SDKs, sample code, and the tooling you integrate with

GitHubOrganization

GitHubOrganization

Access & Security 6

Authentication, authorization, and security posture

Security

Security

VulnerabilityDisclosure

VulnerabilityDisclosure

DomainSecurity

SecurityTxt

Compliance

Authentication

Operate 3

Status, limits, changes, and where to get help

Support

Support

HelpCenter

HelpCenter

StatusPage

StatusPage

Commercial 2

Pricing, plans, and the legal terms of use

PrivacyPolicy

PrivacyPolicy

TermsOfService

TermsOfService

Company 2

The organization behind the API

Website

Website

Blog

Blog

Source (apis.yml)

aid: turnitin
name: Turnitin
description: Turnitin is an academic and research integrity company that for more than 20 years has provided plagiarism/similarity
  detection, AI-writing detection, online grading, and feedback tools for educators, researchers, and publishers. Its market-leading
  integrity services are exposed to third-party platforms through the RESTful Turnitin Core API (TCA), which lets an integrating
  product submit a document, generate a Similarity Report, and display it to users without leaving the host platform, plus
  a Learning Tools Interoperability (LTI) path for LMS integrations. TCA is SOC2 compliant and runs across international data
  centers. Turnitin was surfaced as a portfolio company of Norwest Venture Partners and enriched into the API Evangelist network
  from its public developer documentation.
url: https://raw.githubusercontent.com/api-evangelist/turnitin/refs/heads/main/apis.yml
deliveryModel:
  model: saas
  open_source: false
  commercial: true
  callable_host: false
  label: Hosted service · you call their endpoint
  confidence: medium
  source:
  - pricing
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: unknown
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Unknown
  confidence: low
  source:
  - authentication
  - security
  - sandbox
  generated: '2026-09-03'
  method: derived
image: https://www.turnitin.com/themes/turnitin/img/turnitin-icon-rgb.jpg
x-type: company
x-source: vc-portfolio
x-backed-by:
- norwest-venture-partners
x-tier: stub
x-tier-reason: portfolio-lead
specificationVersion: '0.23'
created: '2026-07-17'
modified: '2026-07-21'
tags:
- Company
- Education
- EdTech
- Academic Integrity
- Plagiarism Detection
- Similarity
- AI Detection
- Assessment
- Research Integrity
- Publishing
- LTI
apis:
- name: Turnitin Core API (TCA)
  description: RESTful API for integrating Turnitin's integrity services into third-party platforms — submit a document, generate
    a Similarity Report, and display it to users. Authenticates with an integration-instance API key plus the X-Turnitin-Integration-Name
    and X-Turnitin-Integration-Version headers. Processing is asynchronous (submit then poll). SOC2 compliant.
  humanURL: https://developers.turnitin.com/turnitin-core-api
  baseURL: https://developers.turnitin.com/turnitin-core-api
  tags:
  - Academic Integrity
  - Plagiarism Detection
  - Similarity
  properties:
  - type: Documentation
    url: https://developers.turnitin.com/turnitin-core-api
  - type: APIReference
    url: https://developers.turnitin.com/turnitin-core-api
  - type: Authentication
    url: authentication/turnitin-authentication.yml
  - type: Conventions
    url: conventions/turnitin-conventions.yml
  - type: Sandbox
    url: sandbox/turnitin-sandbox.yml
- name: Turnitin Learning Tools Interoperability (LTI)
  description: LTI integration path for embedding Turnitin into learning management systems, as an alternative to the TCA
    REST surface.
  humanURL: https://developers.turnitin.com/learning-tools-interoperability
  baseURL: https://developers.turnitin.com/learning-tools-interoperability
  tags:
  - LTI
  - Education
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: Website
  url: https://www.turnitin.com
- type: DeveloperPortal
  url: https://developers.turnitin.com/
- type: Documentation
  url: https://developers.turnitin.com/turnitin-core-api
- type: APIReference
  url: https://developers.turnitin.com/turnitin-core-api
- type: Login
  url: https://developers.turnitin.com/customer-login
- type: Support
  url: https://helpcenter.turnitin.com
- type: HelpCenter
  url: https://helpcenter.turnitin.com
- type: Blog
  url: https://www.turnitin.com/blog/
- type: GitHubOrganization
  url: https://github.com/turnitin
- type: PrivacyPolicy
  url: https://www.turnitin.com/privacy-policy-website/
- type: TermsOfService
  url: https://www.turnitin.com/terms-of-use-website/
- type: StatusPage
  url: https://turnitin.statuspage.io
- type: Security
  url: security/turnitin-vulnerability-disclosure.yml
- type: VulnerabilityDisclosure
  url: security/turnitin-vulnerability-disclosure.yml
- type: DomainSecurity
  url: security/turnitin-domain-security.yml
- type: SecurityTxt
  url: well-known/turnitin-security.txt
- type: WellKnown
  url: well-known/turnitin-well-known.yml
- type: Compliance
  url: conformance/turnitin-conformance.yml
- type: Conformance
  url: conformance/turnitin-conformance.yml
- type: Authentication
  url: authentication/turnitin-authentication.yml
- type: Conventions
  url: conventions/turnitin-conventions.yml
- type: Sandbox
  url: sandbox/turnitin-sandbox.yml
- type: Lifecycle
  url: lifecycle/turnitin-lifecycle.yml
- type: LLMsTxt
  url: llms/turnitin-llms.txt
x-enrichment:
  date: '2026-07-21'
  status: enriched
  artifacts_added: 10
  pass: local-v1

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