Cities Database API website screenshot

Cities Database API

The Cities Database API by AirLabs provides a global reference dataset of cities keyed to IATA metropolitan area codes, ISO country codes, and geographic coordinates. The API is consumed alongside the AirLabs Airports, Airlines, and Flights APIs to power travel search, mapping, geocoding, and clustering experiences. Authentication uses an api_key query parameter obtained from the AirLabs account dashboard. All responses are JSON arrays of city objects.

Cities Database API publishes 1 API on the APIs.io network: Cities API. Tagged areas include Cities, Data, Geography, Locations, and Reference Data.

The Cities Database API catalog on APIs.io includes 1 JSON-LD context and 2 Spectral governance rulesets.

Cities Database API’s developer surface includes authentication, documentation, pricing, signup flow, support, and 13 more developer resources.

🌐 Visit website 📡 Source on GitHub
59.7/100 strong ▬ flat Agent 31/100 agent aware Full breakdown ↓
scored 2026-07-28 · rubric v0.6
AccessFreemiumSelf serve⚡ Free to try
1 APIs
CitiesDataGeographyLocationsReference DataTravel

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-07-28 · rubric v0.6
Composite quality — 59.7/100 · strong
Contract Quality 17.2 / 25
Developer Ergonomics 5.7 / 20
Commercial Clarity 16.8 / 20
Operational Transparency 6.2 / 13
Governance 7.0 / 12
Discoverability 6.9 / 10
Agent readiness — 31/100 · agent aware
Machine-Readable Contract 18 / 18
Agentic Access Contract 10 / 10
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
Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. This rating is computed from github.com/api-evangelist/cities-database-api: open an issue to ask a question, or submit a pull request to add artifacts. Want it done for you? Prioritized profiling — $2,500 →

APIs 1

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

Cities Database API Cities API

The Cities API from Cities Database API — 1 operation(s) for cities.

Postman Collections 1

Ready-to-run Postman collections for exercising this provider's APIs.

AirLabs Database Cities API

POSTMAN

Open Collections 1

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

AirLabs Cities Database API

OPEN COLLECTION

Pricing Plans 1

Published pricing tiers and plan structures.

Cities Database Api Plans Pricing

3 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Cities Database Api Rate Limits

5 limits

RATE LIMITS

FinOps 1

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

Cities Database Api Finops

FINOPS

Semantic Vocabularies 1

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

Cities Database Api Context

13 classes · 0 properties

JSON-LD

Spectral Rules 2

Spectral governance rulesets for linting and validating these APIs.

Cities Database API API Rules

5 rules · 4 warnings 1 info

SPECTRAL

Cities Database API API Rules

5 rules · 3 errors 2 warnings

SPECTRAL

JSON Schema 1

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

AirLabs City

12 properties

JSON SCHEMA

Security Posture 2

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

Cities Database Api Authentication

apiKey · 1 scheme

SECURITY

Cities Database Api Domain Security

TLSv1.3 · DMARC

SECURITY

Agentic Access 1

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

Cities Database Api Agentic Access

1 operation

1 operations · 0 acting

AGENTIC

Resources

Get Started 2

Portal, sign-up, and the first successful call

Signup
Signup
 Login
Login

Documentation 2

Reference material describing how the API behaves

Documentation
Documentation
 JSONSchema
JSONSchema

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess
AgenticAccess

Design & Contract 2

Pagination, idempotency, versioning, errors, and events

JSONLD
JSONLD
 Spectral
Spectral

Build 1

SDKs, sample code, and the tooling you integrate with

PostmanWorkspace
PostmanWorkspace

Access & Security 3

Authentication, authorization, and security posture

DomainSecurity
DomainSecurity
 Authentication
Authentication
 Authentication
Authentication

Operate 2

Status, limits, changes, and where to get help

Support
Support
 StatusPage
StatusPage

Commercial 3

Pricing, plans, and the legal terms of use

Pricing
Pricing
 PrivacyPolicy
PrivacyPolicy
 TermsOfService
TermsOfService

Company 1

The organization behind the API

Website
Website

Other 1

Properties that don't map to a standard resource type

Account
Account

Source (apis.yml)

apis.yml Raw ↑ 
aid: cities-database-api
accessModel:
  pricing: freemium
  onboarding: self-serve
  trial: false
  try_now: true
  public: false
  label: Freemium · Self-serve signup
  confidence: high
  source:
  - plans
  - authentication
  generated: '2026-07-22'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/cities-database-api.png
name: Cities Database API
url: https://raw.githubusercontent.com/api-evangelist/cities-database-api/refs/heads/main/apis.yml
created: '2024-03-30'
modified: '2026-05-19'
type: Index
access: 3rd-Party
position: Consumer
specificationVersion: '0.19'
tags:
- Cities
- Data
- Geography
- Locations
- Reference Data
- Travel
description: The Cities Database API by AirLabs provides a global reference dataset of cities keyed to IATA metropolitan area
  codes, ISO country codes, and geographic coordinates. The API is consumed alongside the AirLabs Airports, Airlines, and
  Flights APIs to power travel search, mapping, geocoding, and clustering experiences. Authentication uses an api_key query
  parameter obtained from the AirLabs account dashboard. All responses are JSON arrays of city objects.
apis:
- aid: cities-database-api:cities-database-api-cities-api
  name: Cities Database API Cities API
  description: The Cities API from Cities Database API — 1 operation(s) for cities.
  humanURL: https://airlabs.co/docs/cities
  baseURL: https://airlabs.co/api/v9
  tags:
  - Cities
  properties:
  - type: OpenAPI
    url: openapi/cities-database-api-cities-api-openapi.yml
  - type: Documentation
    url: https://airlabs.co/docs/cities
  - type: APIReference
    url: https://airlabs.co/docs
  - type: Authentication
    url: https://airlabs.co/account/api-key
common:
- type: PostmanWorkspace
  url: https://www.postman.com/kinlaneapi/cities-database-api/overview
- type: AgenticAccess
  url: agentic-access/cities-database-api-agentic-access.yml
- type: DomainSecurity
  url: security/cities-database-api-domain-security.yml
- type: Authentication
  url: authentication/cities-database-api-authentication.yml
- type: Website
  url: https://airlabs.co/
- type: Documentation
  url: https://airlabs.co/docs
- type: Pricing
  url: https://airlabs.co/pricing
- type: Signup
  url: https://airlabs.co/signup
- type: Login
  url: https://airlabs.co/login
- type: Account
  url: https://airlabs.co/account
- type: Authentication
  url: https://airlabs.co/account/api-key
- type: PrivacyPolicy
  url: https://airlabs.co/privacy
- type: TermsOfService
  url: https://airlabs.co/terms
- type: Support
  url: https://airlabs.co/contact
- type: StatusPage
  url: https://airlabs.co/status
- type: JSONLD
  url: json-ld/cities-database-api-context.jsonld
- type: JSONSchema
  url: json-schema/cities-database-api-city-schema.json
- type: Spectral
  url: rules/cities-database-api-rules.yml
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com