Open Data APIs let you add open data capabilities without building from scratch. Every entry below is profiled with trust signals — pricing model, authentication requirements, CORS support, rate limits, and live uptime checks — so you can compare options and pick production-safe choices instead of guessing from a link list.
| API | Pricing | Auth | CORS | Health | |
|---|---|---|---|---|---|
| 18F Unofficial US Federal Government API Development | Free | No | No | Profile | |
| AWS ACM API Official AWS ACM service API exposed through AWS SDKs and service API references. | Paid | API Key | Yes | Profile | |
| AWS ACMPCA API Official AWS ACMPCA service API exposed through AWS SDKs and service API references. | Paid | API Key | Yes | Profile | |
| AWS Amplify API 2 Official AWS Amplify service API exposed through AWS SDKs and service API references. | Paid | API Key | Yes | Profile | |
| AWS Athena API Official AWS Athena service API exposed through AWS SDKs and service API references. | Paid | API Key | Yes | Profile | |
| AWS AutoScaling API Official AWS AutoScaling service API exposed through AWS SDKs and service API references. | Paid | API Key | Yes | Profile | |
| AWS AutoScalingPlans API Official AWS AutoScalingPlans service API exposed through AWS SDKs and service API references. | Paid | API Key | Yes | Profile | |
| AWS ConfigService API Official AWS ConfigService service API exposed through AWS SDKs and service API references. | Paid | API Key | Yes | Profile | |
| AWS DAX API Official AWS DAX service API exposed through AWS SDKs and service API references. | Paid | API Key | Yes | Profile | |
| AWS DLM API Official AWS DLM service API exposed through AWS SDKs and service API references. | Paid | API Key | Yes | Profile | |
| AWS DMS API Official AWS DMS service API exposed through AWS SDKs and service API references. | Paid | API Key | Yes | Profile | |
| AWS DataSync API Official AWS DataSync service API exposed through AWS SDKs and service API references. | Paid | API Key | Yes | Profile | |
| AWS DeviceFarm API Official AWS DeviceFarm service API exposed through AWS SDKs and service API references. | Paid | API Key | Yes | Profile | |
| AWS DirectoryService API Official AWS DirectoryService service API exposed through AWS SDKs and service API references. | Paid | API Key | Yes | Profile | |
| AWS Discovery API Official AWS Discovery service API exposed through AWS SDKs and service API references. | Paid | API Key | Yes | Profile | |
| AWS DocDB API Official AWS DocDB service API exposed through AWS SDKs and service API references. | Paid | API Key | Yes | Profile | |
| AWS EC2 API Official AWS EC2 service API exposed through AWS SDKs and service API references. | Paid | API Key | Yes | Profile | |
| AWS ECR API Official AWS ECR service API exposed through AWS SDKs and service API references. | Paid | API Key | Yes | Profile | |
| AWS ECS API Official AWS ECS service API exposed through AWS SDKs and service API references. | Paid | API Key | Yes | Profile | |
| AWS EKS API Official AWS EKS service API exposed through AWS SDKs and service API references. | Paid | API Key | Yes | Profile | |
| AWS ELB API Official AWS ELB service API exposed through AWS SDKs and service API references. | Paid | API Key | Yes | Profile | |
| AWS ELBv2 API Official AWS ELBv2 service API exposed through AWS SDKs and service API references. | Paid | API Key | Yes | Profile | |
| AWS ES API Official AWS ES service API exposed through AWS SDKs and service API references. | Paid | API Key | Yes | Profile | |
| AWS ElasticBeanstalk API Official AWS ElasticBeanstalk service API exposed through AWS SDKs and service API references. | Paid | API Key | Yes | Profile | |
| AWS FMS API Official AWS FMS service API exposed through AWS SDKs and service API references. | Paid | API Key | Yes | Profile | |
| AWS Firehose API Official AWS Firehose service API exposed through AWS SDKs and service API references. | Paid | API Key | Yes | Profile | |
| AWS GameLift API Official AWS GameLift service API exposed through AWS SDKs and service API references. | Paid | API Key | Yes | Profile | |
| AWS Glacier API Official AWS Glacier service API exposed through AWS SDKs and service API references. | Paid | API Key | Yes | Profile | |
| AWS GlobalAccelerator API Official AWS GlobalAccelerator service API exposed through AWS SDKs and service API references. | Paid | API Key | Yes | Profile | |
| AWS Greengrass API Official AWS Greengrass service API exposed through AWS SDKs and service API references. | Paid | API Key | Yes | Profile | |
| AWS GroundStation API Official AWS GroundStation service API exposed through AWS SDKs and service API references. | Paid | API Key | Yes | Profile | |
| AWS ImportExport API Official AWS ImportExport service API exposed through AWS SDKs and service API references. | Paid | API Key | Yes | Profile | |
| AWS IoT1ClickDevicesService API Official AWS IoT1ClickDevicesService service API exposed through AWS SDKs and service API references. | Paid | API Key | Yes | Profile | |
| AWS IoT1ClickProjects API Official AWS IoT1ClickProjects service API exposed through AWS SDKs and service API references. | Paid | API Key | Yes | Profile | |
| AWS IoTThingsGraph API Official AWS IoTThingsGraph service API exposed through AWS SDKs and service API references. | Paid | API Key | Yes | Profile | |
| AWS Iot API Official AWS Iot service API exposed through AWS SDKs and service API references. | Paid | API Key | Yes | Profile | |
| AWS IotData API Official AWS IotData service API exposed through AWS SDKs and service API references. | Paid | API Key | Yes | Profile | |
| AWS Kafka API Official AWS Kafka service API exposed through AWS SDKs and service API references. | Paid | API Key | Yes | Profile | |
| AWS Kinesis API Official AWS Kinesis service API exposed through AWS SDKs and service API references. | Paid | API Key | Yes | Profile | |
| AWS LakeFormation API Official AWS LakeFormation service API exposed through AWS SDKs and service API references. | Paid | API Key | Yes | Profile | |
| AWS LicenseManager API Official AWS LicenseManager service API exposed through AWS SDKs and service API references. | Paid | API Key | Yes | Profile | |
| AWS MQ API Official AWS MQ service API exposed through AWS SDKs and service API references. | Paid | API Key | Yes | Profile | |
| AWS MTurk API Official AWS MTurk service API exposed through AWS SDKs and service API references. | Paid | API Key | Yes | Profile | |
| AWS MachineLearning API Official AWS MachineLearning service API exposed through AWS SDKs and service API references. | Paid | API Key | Yes | Profile | |
| AWS MigrationHub API Official AWS MigrationHub service API exposed through AWS SDKs and service API references. | Paid | API Key | Yes | Profile | |
| AWS OpsWorks API Official AWS OpsWorks service API exposed through AWS SDKs and service API references. | Paid | API Key | Yes | Profile | |
| AWS OpsWorksCM API Official AWS OpsWorksCM service API exposed through AWS SDKs and service API references. | Paid | API Key | Yes | Profile | |
| AWS Organizations API Official AWS Organizations service API exposed through AWS SDKs and service API references. | Paid | API Key | Yes | Profile | |
| AWS PI API Official AWS PI service API exposed through AWS SDKs and service API references. | Paid | API Key | Yes | Profile | |
| AWS Pricing API Official AWS Pricing service API exposed through AWS SDKs and service API references. | Paid | API Key | Yes | Profile | |
| AWS QuickSight API Official AWS QuickSight service API exposed through AWS SDKs and service API references. | Paid | API Key | Yes | Profile | |
| AWS RAM API Official AWS RAM service API exposed through AWS SDKs and service API references. | Paid | API Key | Yes | Profile | |
| AWS RoboMaker API Official AWS RoboMaker service API exposed through AWS SDKs and service API references. | Paid | API Key | Yes | Profile | |
| AWS SSM API Official AWS SSM service API exposed through AWS SDKs and service API references. | Paid | API Key | Yes | Profile | |
| AWS SSO API Official AWS SSO service API exposed through AWS SDKs and service API references. | Paid | API Key | Yes | Profile | |
| AWS SSOOIDC API Official AWS SSOOIDC service API exposed through AWS SDKs and service API references. | Paid | API Key | Yes | Profile | |
| AWS STS API Official AWS STS service API exposed through AWS SDKs and service API references. | Paid | API Key | Yes | Profile | |
| AWS SWF API Official AWS SWF service API exposed through AWS SDKs and service API references. | Paid | API Key | Yes | Profile | |
| AWS SavingsPlans API Official AWS SavingsPlans service API exposed through AWS SDKs and service API references. | Paid | API Key | Yes | Profile | |
| AWS ServiceCatalog API Official AWS ServiceCatalog service API exposed through AWS SDKs and service API references. | Paid | API Key | Yes | Profile | |
| AWS ServiceDiscovery API Official AWS ServiceDiscovery service API exposed through AWS SDKs and service API references. | Paid | API Key | Yes | Profile | |
| AWS ServiceQuotas API Official AWS ServiceQuotas service API exposed through AWS SDKs and service API references. | Paid | API Key | Yes | Profile | |
| AWS Signer API Official AWS Signer service API exposed through AWS SDKs and service API references. | Paid | API Key | Yes | Profile | |
| AWS SimpleDB API Official AWS SimpleDB service API exposed through AWS SDKs and service API references. | Paid | API Key | Yes | Profile | |
| AWS Snowball API Official AWS Snowball service API exposed through AWS SDKs and service API references. | Paid | API Key | Yes | Profile | |
| AWS Support API Official AWS Support service API exposed through AWS SDKs and service API references. | Paid | API Key | Yes | Profile | |
| AWS Textract API Official AWS Textract service API exposed through AWS SDKs and service API references. | Paid | API Key | Yes | Profile | |
| AWS WorkLink API Official AWS WorkLink service API exposed through AWS SDKs and service API references. | Paid | API Key | Yes | Profile | |
| AWS WorkSpaces API Official AWS WorkSpaces service API exposed through AWS SDKs and service API references. | Paid | API Key | Yes | Profile | |
| AcreLens API Land suitability scoring API for any US property: off-grid, rural, recreational, investment | Paid | API Key | Unknown | Profile | |
| Archive.org The Internet Archive | Free | No | No | Profile | |
| ArgentinaDatos Unofficial Argentinian data API | Free | No | Yes | Profile | |
| Article Rewriter and Article Extractor API Spinbot.net propose a new solution based on high technologies for faster article spinner and extractor that you will love to use it. | Free | Unknown | Yes | Profile | |
| Auckland Museum API This is technical documentation for the Auckland Museum API | Unknown | Unknown | Yes | Profile | |
| BC Geographical Names Web Service - REST API This REST API provides searchable access to information about geographical names in the province of British Columbia, including name status and details about the corresponding geographic feature. Please note that you may | Unknown | Unknown | Yes | Profile | |
| Betfair: Exchange Streaming API API to receive streamed updates. This is an ssl socket connection of CRLF delimited json messages (see RequestMessage & ResponseMessage) | Unknown | Unknown | Yes | Profile | |
| Bhagavad Gita API Bhagavad Gita API public API. | Paid | Unknown | Yes | Profile | |
| BikeWise API v2 API <p>This is an API for accessing information about bicycling related incidents. You can find the source code on <a href="https://github.com/bikeindex/bikewise">GitHub</a>.</p> | Unknown | API Key | Yes | Profile | |
| BioLink API API integration layer for linked biological objects. __Source:__ https://github.com/biolink/biolink-api/ | Unknown | Unknown | Yes | Profile | |
| Black History Facts Contribute or search one of the largest black history fact databases on the web | Free | API Key | Yes | Profile | |
| BotsArchive JSON formatted details about Telegram Bots available in database | Free | No | No | Profile | |
| CARTO Location Information Prediction | Free | API Key | No | Profile | |
| COVID-19 data API COVID-19 data API public API. | Unknown | Unknown | Yes | Profile | |
| Callook.info United States ham radio callsigns | Free | No | No | Profile | |
| Cambase.io API Cambase.io is a project by Evercam.io in order to make it easier for software developers to have a reliable, up to date source of model hardware information available via a public API. | Paid | Unknown | Yes | Profile | |
| Canada Holidays API This API lists all 31 public holidays for all 13 provinces and territories in Canada, including federal holidays. | Free | Unknown | Yes | Profile | |
| CarbonDoomsDay API A real-time RESTish web API for worldwide carbon dioxide levels. | Unknown | Unknown | Yes | Profile | |
| Cenit IO - REST API Specification API Cenit IO is an Open Platform for Data and Business Integration (iPaaS) | Paid | Unknown | Yes | Profile | |
| City Context API City Context provides a straightforward API to access UK Open Data: crime statistics, schools, demographics and more. | Unknown | Unknown | Yes | Profile | |
| CitySDK Open APIs for select European cities | Free | No | No | Profile | |
| Co-WIN Certificate API API to get Co-WIN vaccination certificate. | Unknown | Unknown | Yes | Profile | |
| CollegeScoreCard.ed.gov Data on higher education institutions in the United States | Free | No | No | Profile | |
| CountryStateCity World countries, states, regions, provinces, cities & towns in JSON, SQL, XML, YAML, & CSV format | Free | API Key | No | Profile | |
| Crediwatch's Covid APIs API An API collection for Covid 19 by Crediwatch | Unknown | Unknown | Yes | Profile | |
| CuttingToolsAI API Cross-brand carbide insert grade equivalents by ISO application class | Paid | Unknown | Yes | Profile | |
| DVP Data API The Docker DVP Data API allows [Docker Verified Publishers](https://docs.docker.com/docker-hub/publish/) to view image pull analytics data for their namespaces. Analytics data can be retrieved as raw data, or in a summar | Unknown | API Key | Yes | Profile | |
| Dados Abertos - API API de Dados Abertos com dados processados pelo grupo de monitoramento de Queimadas do INPE. | Unknown | Unknown | Yes | Profile | |
| DataStream An open access platform for sharing Canadian water quality data | Free | API Key | No | Profile | |
| Deed API Land Registry Deed API | Unknown | Unknown | Yes | Profile | |
| Department of Food, Public Distribution & Consumer Affairs (PDS), Jharkhand API Public distribution system (PDS) is an Indian food security system. Established by the Government of India under Ministry of Consumer Affairs, Food, and Public Distribution and managed jointly with state governments in I | Unknown | API Key | Yes | Profile |
Start with pricing and auth: free tiers and no-auth APIs are fastest to prototype with. Then check CORS if your app calls the API from the browser, and health before you commit — a great API that's been down for a week will block your launch. Each profile below shows all of these signals plus rate limits where documented.