World Health Organization (WHO)

The World Health Organization (WHO) is the United Nations specialized agency for international public health. WHO provides free public REST APIs giving programmatic access to global health statistics, disease surveillance data, immunization coverage, health indicators by country, and the International Classification of Diseases (ICD). The GHO OData API exposes hundreds of health indicators across all WHO member states with no authentication required, while the ICD API provides structured access to ICD-11 and ICD-10 clinical classifications via OAuth 2 credentials obtained through free registration.

World Health Organization (WHO) publishes 3 APIs on the APIs.io network: Foundation API, ICD10 API, and Linearization (classification endpoints) API. Tagged areas include Health, Global Health, Disease Surveillance, Immunization, and Health Statistics.

The World Health Organization (WHO) catalog on APIs.io includes 1 JSON-LD context and 1 Spectral governance ruleset.

World Health Organization (WHO)’s developer surface includes authentication, documentation, engineering blog, pricing, and 10 more developer resources.

🌐 Visit website 📡 Source on GitHub

36.7/100 thin ▬ flat Agent 23/100 agent aware saas Full breakdown ↓
scored 2026-09-08 · rubric v0.20.0

AccessFreeOpen⚡ Free to try

1 APIs

Health Global Health Disease Surveillance ImmunizationHealth StatisticsICDWHOUnited Nations Open Data

Kin Score

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

Composite quality — 36.7/100 · thin

Contract Quality 10.2 / 19

Developer Ergonomics 2.7 / 15

Access Clarity 5.9 / 15

Operational Transparency 0.5 / 10

Contract Governance 0.9 / 9

Discoverability 5.1 / 8

Regulatory Posture 6.4 / 15

Create-or-Update Ergonomics 0.0 / 10

Agent readiness — 23/100 · agent aware

Machine-Readable Contract 18 / 18

Agentic Access Contract 10 / 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 7 / 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 Health 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 applies to this provider. This API accepts writes, so it carries 10 points of the composite. It is scored from the published contracts themselves: whether a caller can create-or-update in one call, whether the write accepts a key the caller already holds, and whether the response says which branch ran. Without that, every write needs a search-and-branch in front of it, and the first time that check is skipped a duplicate record is created. Scored against the observed mean rather than raw — a provider at the catalog average is unchanged by this facet, not penalised by it.

The six quality facets above are damped to 75 points between them, because the conditional facet above carries the other 25. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 75% 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/who: 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 3

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

World Health Organization (WHO) Foundation API

The Foundation API from World Health Organization (WHO) — 4 operation(s) for foundation.

World Health Organization (WHO) ICD10 API

The ICD10 API from World Health Organization (WHO) — 4 operation(s) for icd10.

World Health Organization (WHO) Linearization (classification endpoints) API

The Linearization (classification endpoints) API from World Health Organization (WHO) — 13 operation(s) for linearization (classification endpoints).

Open Collections 4

Open, tool-agnostic API collections (OpenAPI-derived and Bruno).

API Collection

OPEN COLLECTION

ICD Foundation API

OPEN COLLECTION

ICD Foundation ICD10 API

OPEN COLLECTION

ICD Foundation Linearization (classification endpoints) API

OPEN COLLECTION

Pricing Plans 1

Published pricing tiers and plan structures.

Who Plans Pricing

2 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Who Rate Limits

0 limits

RATE LIMITS

FinOps 1

Cost, billing, and metering signals for API financial operations.

Who Finops

FINOPS

Semantic Vocabularies 1

JSON-LD contexts and semantic vocabularies used across these APIs.

Who Context

17 classes · 5 properties

JSON-LD

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

World Health Organization (WHO) API Rules

5 rules · 3 warnings 2 info

SPECTRAL

JSON Schema 25

Standalone JSON Schema definitions for this provider's data models.

AutoCodingSearchResult

9 properties

JSON SCHEMA

CodeInfo

69 properties

JSON SCHEMA

DeathCertificateCheckResult

3 properties

JSON SCHEMA

EntityTypeEnum

0 properties

JSON SCHEMA

FoundationEntity

14 properties

JSON SCHEMA

GuessTypeEnum

0 properties

JSON SCHEMA

GuessWord

2 properties

JSON SCHEMA

ICD10Entity

15 properties

JSON SCHEMA

ISearchResult

8 properties

JSON SCHEMA

ISimpleEntity

20 properties

JSON SCHEMA

ISimplePropertyValue

6 properties

JSON SCHEMA

LanguageSpecificText

2 properties

JSON SCHEMA

LinearizationEntity

25 properties

JSON SCHEMA

MatchLevelEnum

0 properties

JSON SCHEMA

MultiVersion

3 properties

JSON SCHEMA

PostcoordinationAvailabilityEnum

0 properties

JSON SCHEMA

PostcoordinationScaleInfo

4 properties

JSON SCHEMA

PostcoordinationSet

9 properties

JSON SCHEMA

PostcoordinationValue

2 properties

JSON SCHEMA

PropertyValueTypeEnum

0 properties

JSON SCHEMA

Term

4 properties

JSON SCHEMA

TopLevel

8 properties

JSON SCHEMA

TopLevelFoundation

11 properties

JSON SCHEMA

TopLevelLinearization

10 properties

JSON SCHEMA

UnderlyingCauseOfDeath

9 properties

JSON SCHEMA

Scroll for all 25

Security Posture 2

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

Who Authentication

oauth2 · 1 scheme

SECURITY

Who Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Scopes 1

OAuth scopes governing access to this provider's APIs.

Who Scopes

1 scope · clientCredentials

1 scopes

SCOPES

Agentic Access 1

Recommended x-agentic-access execution contracts for AI agents.

Who Agentic Access

25 operations · 4 acting

AGENTIC

Resources

Documentation 1

Reference material describing how the API behaves

Documentation

Documentation

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess

AgenticAccess

Build 1

SDKs, sample code, and the tooling you integrate with

GitHubOrg

GitHubOrg

Access & Security 3

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Authentication

Authentication

OAuthScopes

OAuthScopes

Operate 1

Status, limits, changes, and where to get help

RateLimits

RateLimits

Commercial 3

Pricing, plans, and the legal terms of use

Pricing

Pricing

Plans

Plans

FinOps

FinOps

Company 3

The organization behind the API

Website

Website

LinkedIn

Blog

Blog

Other 1

Properties that don't map to a standard resource type

Source (apis.yml)

aid: who
name: World Health Organization (WHO)
description: 'The World Health Organization (WHO) is the United Nations specialized agency for international public health.
  WHO provides free public REST APIs giving programmatic access to global health statistics, disease surveillance data, immunization
  coverage, health indicators by country, and the International Classification of Diseases (ICD). The GHO OData API exposes
  hundreds of health indicators across all WHO member states with no authentication required, while the ICD API provides structured
  access to ICD-11 and ICD-10 clinical classifications via OAuth 2 credentials obtained through free registration.

  '
deliveryModel:
  model: saas
  open_source: false
  commercial: true
  callable_host: true
  label: Hosted service · you call their endpoint
  confidence: high
  source:
  - openapi
  - pricing
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: free
  onboarding: open
  trial: false
  try_now: true
  public: true
  label: Free · Open access
  confidence: high
  source:
  - plans
  - authentication
  generated: '2026-07-22'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/who.png
url: https://raw.githubusercontent.com/api-evangelist/who/refs/heads/main/apis.yml
created: '2026-06-13'
modified: '2026-06-13'
specificationVersion: '0.23'
tags:
- Health
- Global Health
- Disease Surveillance
- Immunization
- Health Statistics
- ICD
- WHO
- United Nations
- Open Data
apis:
- aid: who:who-foundation-api
  name: World Health Organization (WHO) Foundation API
  description: The Foundation API from World Health Organization (WHO) — 4 operation(s) for foundation.
  humanURL: https://www.who.int/data/gho/info/gho-odata-api
  baseURL: https://ghoapi.azureedge.net/api
  tags:
  - Foundation
  properties:
  - type: OpenAPI
    url: openapi/who-foundation-api-openapi.yml
  - type: Documentation
    url: https://www.who.int/data/gho/info/gho-odata-api
  - type: Documentation
    url: https://icd.who.int/docs/icd-api/APIDoc-Version2/
  - type: Authentication
    url: https://icdaccessmanagement.who.int/connect/token
- aid: who:who-icd10-api
  name: World Health Organization (WHO) ICD10 API
  description: The ICD10 API from World Health Organization (WHO) — 4 operation(s) for icd10.
  humanURL: https://www.who.int/data/gho/info/gho-odata-api
  baseURL: https://ghoapi.azureedge.net/api
  tags:
  - ICD-10
  tags_raw:
  - ICD10
  properties:
  - type: OpenAPI
    url: openapi/who-icd10-api-openapi.yml
  - type: Documentation
    url: https://www.who.int/data/gho/info/gho-odata-api
  - type: Documentation
    url: https://icd.who.int/docs/icd-api/APIDoc-Version2/
  - type: Authentication
    url: https://icdaccessmanagement.who.int/connect/token
- aid: who:who-linearization-classification-endpoints-api
  name: World Health Organization (WHO) Linearization (classification endpoints) API
  description: The Linearization (classification endpoints) API from World Health Organization (WHO) — 13 operation(s) for
    linearization (classification endpoints).
  humanURL: https://www.who.int/data/gho/info/gho-odata-api
  baseURL: https://ghoapi.azureedge.net/api
  tags:
  - Linearization (classification endpoints)
  properties:
  - type: OpenAPI
    url: openapi/who-linearization-classification-endpoints-api-openapi.yml
  - type: Documentation
    url: https://www.who.int/data/gho/info/gho-odata-api
  - type: Documentation
    url: https://icd.who.int/docs/icd-api/APIDoc-Version2/
  - type: Authentication
    url: https://icdaccessmanagement.who.int/connect/token
common:
- type: AgenticAccess
  url: agentic-access/who-agentic-access.yml
- type: DomainSecurity
  url: security/who-domain-security.yml
- type: Authentication
  url: authentication/who-authentication.yml
- type: OAuthScopes
  url: scopes/who-scopes.yml
- type: Website
  url: https://www.who.int
- type: Documentation
  url: https://www.who.int/data/gho/info/gho-odata-api
- type: GitHubOrg
  url: https://github.com/WorldHealthOrganization
- type: LinkedIn
  url: https://www.linkedin.com/company/world-health-organization-who-/
- type: Blog
  url: https://www.who.int/news-room
- type: Pricing
  url: https://icd.who.int/docs/icd-api/license/
- type: X
  url: https://x.com/WHO
- type: Plans
  url: plans/who-plans-pricing.yml
- type: RateLimits
  url: rate-limits/who-rate-limits.yml
- type: FinOps
  url: finops/who-finops.yml
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com

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