EY

One of the Big Four professional services firms providing audit, tax, consulting, and advisory services. Operates in over 150 countries helping businesses navigate regulatory and strategic challenges, and runs proprietary technology platforms such as EY Helix (analytics), EY Atlas (research), and EY Canvas (audit) for internal and engagement use.

EY is profiled on the APIs.io network. Tagged areas include Consulting, Accounting, Audit, Tax, and Advisory.

EY’s developer surface includes product news, engineering blog, and 12 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

6.7/100 minimal ▬ flat Agent 0/100 human only Front door AI 6/6 dominant saas Full breakdown ↓
scored 2026-10-17 · rubric v0.24.0

0 APIs

Consulting Accounting Audit Tax Advisory Professional Services Big Four Assurance Law Strategy Transaction Corporate Finance Technology Managed ServicePeople And WorkforceSustainability ESG Risk Management Artificial Intelligence AI Agents Blockchain Zero-Knowledge Proofs Privacy Insights Research Industry Analysis

Kin Score

Kin Score How this is scored →
scored 2026-10-17 · rubric v0.24.0

Composite quality — 6.7/100 · minimal

Contract Quality 0.0 / 21

Developer Ergonomics 0.4 / 17

Access Clarity 1.8 / 17

Operational Transparency 0.6 / 11

Contract Governance 0.0 / 10

Discoverability 3.7 / 9

Regulatory Posture 1.4 / 15

Agent readiness — 0/100 · human only

Machine-Readable Contract 0 / 18

Agentic Access Contract 0 / 10

Documented Reversibility 0 / 6

MCP Server 0 / 12

Machine-Readable Auth 0 / 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 Horizontal (data, software, accessibility, platform) 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/ey: 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 →

Markets this provider is in provisional

The Kin Score Market layer reads a provider inside its market: its position, and how deep its integrations go. Depth is only comparable within a position. Provisional and unweighted: not part of the Kin Score or agent readiness.

Market	Position	Depth	Registered MCP server	Declares compatibility
Professional Services (consulting, systems integrators, agencies)	standard	55.6	-	1

Registered MCP server and declares compatibility are report only — not weighted. Undeclared means we found nothing we can read, so there is no number: we never infer integrations.

Security Posture 1

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

Ey Domain Security

TLSv1.3 · HSTS · DNSSEC · DMARC

SECURITY

Resources

Get Started 1

Portal, sign-up, and the first successful call

ClientPortal

ClientPortal

Build 1

SDKs, sample code, and the tooling you integrate with

GitHubOrganization

GitHubOrganization

Access & Security 1

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Operate 1

Status, limits, changes, and where to get help

ContactUs

ContactUs

Commercial 2

Pricing, plans, and the legal terms of use

PrivacyPolicy

PrivacyPolicy

TermsOfService

TermsOfService

Company 7

The organization behind the API

LinkedIn

Website

AboutUs

News

Careers

Blog

Website

Scroll for all 7

Other 1

Properties that don't map to a standard resource type

Insights

Insights

Source (apis.yml)

aid: ey
url: https://raw.githubusercontent.com/api-evangelist/ey/refs/heads/main/apis.yml
name: EY
type: Index
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: []
  generated: '2026-07-22'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/ey.png
tags:
- Consulting
- Accounting
- Audit
- Tax
- Advisory
- Professional Services
- Big Four
- Assurance
- Law
- Strategy
- Transaction
- Corporate Finance
- Technology
- Managed Service
- People And Workforce
- Sustainability
- ESG
- Risk Management
- Artificial Intelligence
- AI Agents
- Blockchain
- Zero-Knowledge Proofs
- Privacy
- Insights
- Research
- Industry Analysis
description: One of the Big Four professional services firms providing audit, tax, consulting, and advisory services. Operates
  in over 150 countries helping businesses navigate regulatory and strategic challenges, and runs proprietary technology platforms
  such as EY Helix (analytics), EY Atlas (research), and EY Canvas (audit) for internal and engagement use.
created: '2026-05-05'
modified: '2026-05-16'
specificationVersion: '0.23'
apis: []
x-no-public-api: true
x-no-public-api-reason: EY does not publish a public developer portal, OpenAPI specs, or partner API documentation. EY operates
  proprietary technology platforms (EY Helix analytics, EY Atlas research, EY Canvas audit, EY Intelligent Tax) but those
  systems are surfaced to clients through engagement teams and the EY Client Portal rather than as self-service developer
  APIs. Any technical integrations are arranged through engagement contracts and EY Technology Consulting.
common:
- type: DomainSecurity
  url: security/ey-domain-security.yml
- type: LinkedIn
  url: https://www.linkedin.com/company/ernstandyoung
- type: Website
  url: https://www.ey.com/
- type: AboutUs
  url: https://www.ey.com/en_gl/about-us
- type: ClientPortal
  url: https://www.eyclientportal.com/
- type: Insights
  url: https://www.ey.com/en_gl/insights
- type: News
  url: https://www.ey.com/en_gl/newsroom
- type: Careers
  url: https://www.ey.com/en_gl/careers
- type: ContactUs
  url: https://www.ey.com/en_gl/contact-us
- type: PrivacyPolicy
  url: https://www.ey.com/en_gl/privacy-statement
- type: TermsOfService
  url: https://www.ey.com/en_gl/legal-statement
- url: https://www.ey.com/en_gl/newsroom
  type: Blog
- type: Website
  url: https://www.ey.com/en_gl
- type: GitHubOrganization
  name: EY Blockchain
  url: https://github.com/EYBlockchain

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