REST Countries
REST Countries is a free, open-source RESTful API that returns rich country reference data — ISO 3166-1 codes (cca2, cca3, ccn3, cioc), common/official and native names, translations, capitals, regions and subregions, continents, currencies, languages, calling codes, top-level domains, timezones, geographic coordinates, borders, area, population, demonyms, flags and coats of arms, postal code formats, Gini index, FIFA code, independence and UN membership status, driving side, and start of week. The canonical hosted instance runs at restcountries.com (v3.1) and the source is community-maintained at github.com/apilayer/restcountries (mirror of gitlab.com/restcountries/restcountries), licensed under MPL-2.0. The hosted API is unauthenticated and free; for production use the project encourages self-hosting from source.
Real signal across most facets with visible, nameable gaps — the contract exists but is thin, or the portal is good while governance and commercial terms are absent.
API Evangelist profiles REST Countries the way a machine reads it — 46 machine-readable artifacts across 1 API, pulled from the provider's own public surface and indexed so a developer, an analyst, or an AI agent can evaluate it against every other provider on the network.
Every provider in the network is reduced to the same set of machine-readable artifacts — OpenAPI contracts, event specifications, GraphQL schemas, runnable collections, pricing and rate-limit signals, security posture, OAuth scopes, and the agent surfaces (MCP servers and skills) that let software drive the API on its own. We profile them because the interface is the part of a company you can actually inspect: it is a truer signal of what a provider does than any marketing page. From those artifacts we compute the Kin Score — REST Countries scores 48.6/100 (developing), with a separate agent-readiness read of 29/100 (agent ready). The full breakdown is below, followed by every artifact we hold — each card links through to its machine-readable definition on apis.io.
Kin Score
This is the API Evangelist rating — a single, repeatable read computed from the artifacts on this page. Green fill is points earned; the red track is points possible, so every bar shows earned-versus-possible at a glance. Every facet and dimension name is a link: it opens that measurement's page on APIs.io, where the rating runs across the whole catalog — the exact checks that feed it, how every profiled provider distributes on it, and who is at the top of it.
Kin Score
How this is scored →scored 2026-09-08 · rubric v0.20.0
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How we profile REST Countries
Each block below is one kind of artifact we hold for REST Countries. For each we say what it is and why it earns a place in the profile, then list every one we've indexed — capped at two rows, scroll within the panel for the rest.
APIs 12
Each API is captured as its own OpenAPI definition — every operation, parameter, and response. This is the single most useful machine-readable description of what an API does, and it's what lets us score, lint, mock, and generate against it without asking the provider for anything.
Individual APIs this provider publishes, each with its own machine-readable definition.
REST Countries All API
Bulk retrieval of every country in the dataset.
REST Countries Alpha API
Lookup countries by ISO 3166-1 alpha-2, alpha-3, numeric, or CIOC code.
REST Countries Capital API
Lookup countries by capital city.
REST Countries Currency API
Lookup countries by ISO 4217 currency code or currency name.
REST Countries Demonym API
Lookup countries by demonym (citizen designation).
REST Countries Independent API
Lookup countries filtered by ISO 3166-1 independence status.
REST Countries Language API
Lookup countries by ISO 639 language code or language name.
REST Countries Name API
Lookup countries by common or official name.
REST Countries Region API
Lookup countries within a UN geographic region.
REST Countries Subregion API
Lookup countries within a UN geographic subregion.
REST Countries Translation API
Lookup countries by translated name.
REST Countries Countries API
Country lookup and search endpoints
Scroll within the panel for all 12 ·
Open Collections 14
Open, tool-agnostic collections carry the same runnable value as Postman without locking you to one client — the portable, forkable form of the same exercise.
Open, tool-agnostic API collections (OpenAPI-derived and Bruno).
API Collection
OPEN COLLECTIONREST Countries All API
OPEN COLLECTIONREST Countries All Alpha API
OPEN COLLECTIONREST Countries All Capital API
OPEN COLLECTIONREST Countries API
OPEN COLLECTIONREST Countries All Currency API
OPEN COLLECTIONREST Countries All Demonym API
OPEN COLLECTIONREST Countries All Independent API
OPEN COLLECTIONREST Countries All Language API
OPEN COLLECTIONREST Countries All Name API
OPEN COLLECTIONREST Countries All Region API
OPEN COLLECTIONREST Countries All Subregion API
OPEN COLLECTIONREST Countries All Translation API
OPEN COLLECTIONREST Countries
OPEN COLLECTIONScroll within the panel for all 14 ·
Pricing Plans 1
Pricing is part of the interface. Machine-readable plans tell you what a tier costs and includes before you commit — one of the things the Kin Score reads for access clarity — renamed from commercial clarity in rubric 0.12, because a free statutory interface has access terms and no commercial ones.
Published pricing tiers and plan structures.
Rate Limits 1
Rate limits are the difference between a demo that works and a production integration that doesn't fall over. Publishing them is an operational-transparency signal — and a hard requirement for any agent that plans its own throughput.
Documented rate limits and quota policies.
Rest Countries Rate Limits
RATE LIMITSFinOps 1
Cost, billing, and metering signals let a buyer model the financial operations of an API before it's live. We profile them for the same reason we profile pricing: the money is part of the contract.
Cost, billing, and metering signals for API financial operations.
Rest Countries Finops
FINOPSSemantic Vocabularies 2
JSON-LD contexts give the data shared meaning across APIs. We profile them because semantics are what let a machine reconcile 'customer' here with 'customer' somewhere else.
JSON-LD contexts and semantic vocabularies used across these APIs.
Rest Countries Api Context
JSON-LDRest Countries Context
JSON-LDSpectral Rules 2
Governance rulesets we run against this provider's specs — the automated checks behind parts of the score. Profiling them makes the quality bar explicit and re-runnable, not a matter of opinion.
REST Countries API Rules
SPECTRALREST Countries API Rules
SPECTRALJSON Schema 4
Standalone JSON Schema definitions describe the data models behind the API. We profile them so the shapes are validatable on their own — useful long after a single request is forgotten.
Standalone JSON Schema definitions for this provider's data models.
JSON Structure 1
JSON Structure captures the data shapes in a form built for tooling — a complement to JSON Schema that keeps the model machine-legible.
JSON Structure definitions describing this provider's data shapes.
Rest Countries Country Structure
JSON STRUCTUREExamples 5
Real request and response payloads are what turn a spec from abstract into obvious — and they're one of the twelve things an agent needs to call an API correctly on the first try.
Example request and response payloads for these APIs.
Security Posture 2
Authentication, domain security, vulnerability disclosure, and trust-center signals — the evidence that a provider takes security seriously enough to document it. We profile it because you can't govern what you can't see.
Authentication, domain security, vulnerability disclosure, and trust-center signals.
Agentic Access 1
An x-agentic-access contract marks which operations are safe for an agent to run on its own and which need a human in the loop. It is the difference between an API an agent can use and one it can use safely.
Recommended x-agentic-access execution contracts for AI agents.
Resources
Every other property we hold for REST Countries — documentation, portals, status pages, policies, and corporate surface — grouped by the job it does, following the integrator's arc from getting started to running in production.
Documentation 1
Reference material describing how the API behaves
Agent Surfaces 1
MCP servers, agent skills, and machine-readable catalogs
Design & Contract 2
Pagination, idempotency, versioning, errors, and events
Build 2
SDKs, sample code, and the tooling you integrate with
Access & Security 2
Authentication, authorization, and security posture
Operate 4
Status, limits, changes, and where to get help
Commercial 4
Pricing, plans, and the legal terms of use
Company 1
The organization behind the API
Other 2
Properties that don't map to a standard resource type
← All providers · Data indexed from github.com/api-evangelist/rest-countries · machine-readable index on apis.io
This is an independent, third-party profile of REST Countries, published by API Evangelist. We do not operate, host, resell, or support these APIs, and we are not affiliated with or endorsed by the company unless stated above. Everything here is built from publicly available information — the company's own site, developer portal, documentation, public repositories, and the specifications it publishes for public use. Nothing is obtained by breaching a system, defeating an access control, or using credentials.
The Kin Score and Agent Readiness rating are independently calculated assessments of a company's public API artifacts, scored against a published rubric. They are not certifications, endorsements, security assessments, or audits.
Corrections, re-scores, and removal are free — no partnership or purchase required, and you do not need to justify the request. A removed company is recorded as unrated, never scored zero for having asked. Acknowledgement within one business day; removal within two.
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