Country.io

Country.io is a small open data project that publishes a set of static JSON files mapping ISO 3166-1 alpha-2 country codes to common reference data: country names, capital cities, ISO 3166-1 alpha-3 codes, continent codes, international telephone dialing prefixes, and ISO 4217 currency codes. The files are commonly consumed as a lightweight country-data dataset for forms, country pickers, and analytics enrichment.

Country.io publishes 6 APIs on the APIs.io network, including Capitals API, Continents API, Currency API, and 3 more. Tagged areas include Capitals, Continents, Countries, Currency, and Currency Codes.

The Country.io catalog on APIs.io includes 1 Spectral governance ruleset.

🌐 Visit website 📡 Source on GitHub

28.9/100 thin ▬ flat Agent 26/100 agent aware Full breakdown ↓
scored 2026-09-08 · rubric v0.20.0

AccessFreemium

1 APIs

Capitals Continents Countries Currency Currency CodesDialing CodesGeography ISO 3166 JSON Open DataPhone CodesReference Data

Kin Score

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

Composite quality — 28.9/100 · thin

Contract Quality 10.3 / 21

Developer Ergonomics 1.6 / 17

Access Clarity 0.0 / 17

Operational Transparency 0.9 / 11

Contract Governance 6.2 / 10

Discoverability 5.8 / 9

Regulatory Posture 3.1 / 15

Agent readiness — 26/100 · agent aware

Machine-Readable Contract 18 / 18

Agentic Access Contract 10 / 10

Documented Reversibility 6 / 6

MCP Server 0 / 12

Machine-Readable Auth 0 / 10

Idempotency 9 / 9

Stable Error Semantics 0 / 8

Request/Response Examples 7 / 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 4 / 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 Government & Public Sector 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 does not apply to this provider. The published contracts declare no write operations, and a read-only API cannot create-or-update. The facet is excluded from this provider's denominator entirely — not scored zero. A reference or data API is not deficient for being unable to upsert.

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/country-io: 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 6

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

Country.io Capitals API

Capital cities by ISO2 code.

Country.io Continents API

Continent codes by ISO2 country code.

Country.io Currency API

Currency codes by ISO2 country code.

Country.io ISO3 API

ISO 3166-1 alpha-3 codes by ISO2 country code.

Country.io Names API

Country names by ISO2 code.

Country.io Phone API

International dialing codes by ISO2 country code.

Open Collections 8

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

API Collection

OPEN COLLECTION

Country.io Data Capitals API

OPEN COLLECTION

Country.io Data Capitals Continents API

OPEN COLLECTION

Country.io Data Capitals Currency API

OPEN COLLECTION

Country.io Data API

OPEN COLLECTION

Country.io Data Capitals ISO3 API

OPEN COLLECTION

Country.io Data Capitals Names API

OPEN COLLECTION

Country.io Data Capitals Phone API

OPEN COLLECTION

Scroll for all 8

Pricing Plans 1

Published pricing tiers and plan structures.

Country Io Plans Pricing

3 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Country Io Rate Limits

5 limits

RATE LIMITS

FinOps 1

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

Country Io Finops

FINOPS

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

Country.io API Rules

7 rules · 6 errors 1 warnings

SPECTRAL

Security Posture 1

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

Country Io Domain Security

TLSv1.3

SECURITY

Agentic Access 1

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

Country Io Agentic Access

6 operations

6 operations · 0 acting

AGENTIC

Resources

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess

AgenticAccess

Design & Contract 1

Pagination, idempotency, versioning, errors, and events

Vocabulary

Vocabulary

Access & Security 1

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Operate 1

Status, limits, changes, and where to get help

Contact

Contact

Company 1

The organization behind the API

Website

Website

Other 3

Properties that don't map to a standard resource type

Data

Data

Countries

Countries

Rankings

Rankings

Source (apis.yml)

aid: country-io
name: Country.io
kind: company
description: 'Country.io is a small open data project that publishes a set of static JSON files mapping ISO 3166-1 alpha-2
  country codes to common reference data: country names, capital cities, ISO 3166-1 alpha-3 codes, continent codes, international
  telephone dialing prefixes, and ISO 4217 currency codes. The files are commonly consumed as a lightweight country-data dataset
  for forms, country pickers, and analytics enrichment.'
url: https://raw.githubusercontent.com/api-evangelist/country-io/refs/heads/main/apis.yml
deliveryModel:
  model: unknown
  open_source: false
  commercial: false
  callable_host: true
  label: Delivery model not determined — needs a product licence on record
  confidence: low
  source:
  - openapi
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: freemium
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Freemium
  confidence: medium
  source:
  - plans
  generated: '2026-07-22'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/country-io.png
type: Index
access: Public
position: Producing
tags:
- Capitals
- Continents
- Countries
- Currency
- Currency Codes
- Dialing Codes
- Geography
- ISO 3166
- JSON
- Open Data
- Phone Codes
- Reference Data
tags_raw:
- Capitals
- Continents
- Countries
- Currencies
- Currency Codes
- Dialing Codes
- Geography
- ISO 3166
- JSON
- Open Data
- Phone Codes
- Reference Data
created: '2025-02-21'
modified: '2026-05-19'
specificationVersion: '0.23'
apis:
- aid: country-io:country-io-capitals-api
  name: Country.io Capitals API
  description: Capital cities by ISO2 code.
  humanURL: https://country.io/data/
  baseURL: https://country.io
  tags:
  - Capitals
  properties:
  - type: OpenAPI
    url: openapi/country-io-capitals-api-openapi.yml
  - type: Documentation
    url: https://country.io/data/
  - type: Rules
    url: rules/country-io-data-rules.yml
- aid: country-io:country-io-continents-api
  name: Country.io Continents API
  description: Continent codes by ISO2 country code.
  humanURL: https://country.io/data/
  baseURL: https://country.io
  tags:
  - Continents
  properties:
  - type: OpenAPI
    url: openapi/country-io-continents-api-openapi.yml
  - type: Documentation
    url: https://country.io/data/
  - type: Rules
    url: rules/country-io-data-rules.yml
- aid: country-io:country-io-currency-api
  name: Country.io Currency API
  description: Currency codes by ISO2 country code.
  humanURL: https://country.io/data/
  baseURL: https://country.io
  tags:
  - Currency
  properties:
  - type: OpenAPI
    url: openapi/country-io-currency-api-openapi.yml
  - type: Documentation
    url: https://country.io/data/
  - type: Rules
    url: rules/country-io-data-rules.yml
- aid: country-io:country-io-iso3-api
  name: Country.io ISO3 API
  description: ISO 3166-1 alpha-3 codes by ISO2 country code.
  humanURL: https://country.io/data/
  baseURL: https://country.io
  tags:
  - ISO3
  properties:
  - type: OpenAPI
    url: openapi/country-io-iso3-api-openapi.yml
  - type: Documentation
    url: https://country.io/data/
  - type: Rules
    url: rules/country-io-data-rules.yml
- aid: country-io:country-io-names-api
  name: Country.io Names API
  description: Country names by ISO2 code.
  humanURL: https://country.io/data/
  baseURL: https://country.io
  tags:
  - Name
  tags_raw:
  - Names
  properties:
  - type: OpenAPI
    url: openapi/country-io-names-api-openapi.yml
  - type: Documentation
    url: https://country.io/data/
  - type: Rules
    url: rules/country-io-data-rules.yml
- aid: country-io:country-io-phone-api
  name: Country.io Phone API
  description: International dialing codes by ISO2 country code.
  humanURL: https://country.io/data/
  baseURL: https://country.io
  tags:
  - Phone
  properties:
  - type: OpenAPI
    url: openapi/country-io-phone-api-openapi.yml
  - type: Documentation
    url: https://country.io/data/
  - type: Rules
    url: rules/country-io-data-rules.yml
common:
- type: AgenticAccess
  url: agentic-access/country-io-agentic-access.yml
- type: DomainSecurity
  url: security/country-io-domain-security.yml
- type: Website
  url: https://country.io/
- type: Data
  url: https://country.io/data/
- type: Countries
  url: https://country.io/countries/
- type: Rankings
  url: https://country.io/rankings/
- type: Contact
  url: https://country.io/contact/
- type: Vocabulary
  url: vocabulary/country-io-vocabulary.yml
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com

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