Cloud Infrastructure APIs let you add cloud infrastructure 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 | |
|---|---|---|---|---|---|
| AWS APIGateway API Official AWS APIGateway service API exposed through AWS SDKs and service API references. | Paid | API Key | Yes | Profile | |
| AWS ApiGatewayManagementApi API Official AWS ApiGatewayManagementApi service API exposed through AWS SDKs and service API references. | Paid | API Key | Yes | Profile | |
| AWS ApiGatewayV2 API Official AWS ApiGatewayV2 service API exposed through AWS SDKs and service API references. | Paid | API Key | Yes | Profile | |
| AWS AppMesh API Official AWS AppMesh service API exposed through AWS SDKs and service API references. | Paid | API Key | Yes | Profile | |
| AWS AppStream API Official AWS AppStream service API exposed through AWS SDKs and service API references. | Paid | API Key | Yes | Profile | |
| AWS AppSync API Official AWS AppSync service API exposed through AWS SDKs and service API references. | Paid | API Key | Yes | Profile | |
| AWS ApplicationAutoScaling API Official AWS ApplicationAutoScaling service API exposed through AWS SDKs and service API references. | Paid | API Key | Yes | Profile | |
| AWS ApplicationInsights API Official AWS ApplicationInsights service API exposed through AWS SDKs and service API references. | Paid | API Key | Yes | Profile | |
| AWS Cloud9 API Official AWS Cloud9 service API exposed through AWS SDKs and service API references. | Paid | API Key | Yes | Profile | |
| AWS CloudDirectory API Official AWS CloudDirectory service API exposed through AWS SDKs and service API references. | Paid | API Key | Yes | Profile | |
| AWS CloudFormation API Official AWS CloudFormation service API exposed through AWS SDKs and service API references. | Paid | API Key | Yes | Profile | |
| AWS CloudFront API Official AWS CloudFront service API exposed through AWS SDKs and service API references. | Paid | API Key | Yes | Profile | |
| AWS CloudHSM API Official AWS CloudHSM service API exposed through AWS SDKs and service API references. | Paid | API Key | Yes | Profile | |
| AWS CloudHSMV2 API Official AWS CloudHSMV2 service API exposed through AWS SDKs and service API references. | Paid | API Key | Yes | Profile | |
| AWS CloudSearch API Official AWS CloudSearch service API exposed through AWS SDKs and service API references. | Paid | API Key | Yes | Profile | |
| AWS CodeBuild API Official AWS CodeBuild service API exposed through AWS SDKs and service API references. | Paid | API Key | Yes | Profile | |
| AWS CodeCommit API Official AWS CodeCommit service API exposed through AWS SDKs and service API references. | Paid | API Key | Yes | Profile | |
| AWS CodeDeploy API Official AWS CodeDeploy service API exposed through AWS SDKs and service API references. | Paid | API Key | Yes | Profile | |
| AWS CodePipeline API Official AWS CodePipeline service API exposed through AWS SDKs and service API references. | Paid | API Key | Yes | Profile | |
| AWS DataPipeline API Official AWS DataPipeline service API exposed through AWS SDKs and service API references. | Paid | API Key | Yes | Profile | |
| AWS EventBridge API Official AWS EventBridge service API exposed through AWS SDKs and service API references. | Paid | API Key | Yes | Profile | |
| AWS IoTEvents API Official AWS IoTEvents service API exposed through AWS SDKs and service API references. | Paid | API Key | Yes | Profile | |
| AWS IoTEventsData API Official AWS IoTEventsData service API exposed through AWS SDKs and service API references. | Paid | API Key | Yes | Profile | |
| AWS Lambda API Official AWS Lambda service API exposed through AWS SDKs and service API references. | Paid | API Key | Yes | Profile | |
| AWS ResourceGroups API Official AWS ResourceGroups service API exposed through AWS SDKs and service API references. | Paid | API Key | Yes | Profile | |
| AWS ResourceGroupsTaggingAPI API Official AWS ResourceGroupsTaggingAPI service API exposed through AWS SDKs and service API references. | Paid | API Key | Yes | Profile | |
| AWS Route53 API Official AWS Route53 service API exposed through AWS SDKs and service API references. | Paid | API Key | Yes | Profile | |
| AWS Route53Resolver API Official AWS Route53Resolver service API exposed through AWS SDKs and service API references. | Paid | API Key | Yes | Profile | |
| AWS ServerlessApplicationRepository API Official AWS ServerlessApplicationRepository service API exposed through AWS SDKs and service API references. | Paid | API Key | Yes | Profile | |
| AWS StepFunctions API Official AWS StepFunctions service API exposed through AWS SDKs and service API references. | Paid | API Key | Yes | Profile | |
| Azure Aadiam Azure Active Directory API 2017-04-01 Official Microsoft Azure REST API OpenAPI specification for specification/azureactivedirectory/resource-manager/Microsoft.Aadiam/AzureActiveDirectory/stable/2017-04-01/azureactivedirectory.json. | Paid | API Key | Yes | Profile | |
| Azure Aadiam Azure Active Directory API 2020-03-01 Official Microsoft Azure REST API OpenAPI specification for specification/azureactivedirectory/resource-manager/Microsoft.Aadiam/AzureActiveDirectory/stable/2020-03-01/privateEndpointConnections.json. | Paid | Unknown | Yes | Profile | |
| Azure Aadiam Azure Active Directory API 2020-03-01 2 Official Microsoft Azure REST API OpenAPI specification for specification/azureactivedirectory/resource-manager/Microsoft.Aadiam/AzureActiveDirectory/stable/2020-03-01/privateLinkForAzureAD.json. | Paid | API Key | Yes | Profile | |
| Azure Aadiam Azure Active Directory API 2020-03-01 3 Official Microsoft Azure REST API OpenAPI specification for specification/azureactivedirectory/resource-manager/Microsoft.Aadiam/AzureActiveDirectory/stable/2020-03-01/privateLinkResources.json. | Paid | Unknown | Yes | Profile | |
| Azure Advisor Advisor API 2017-03-31 Official Microsoft Azure REST API OpenAPI specification for specification/advisor/resource-manager/Microsoft.Advisor/Advisor/stable/2017-03-31/advisor.json. | Paid | API Key | Yes | Profile | |
| Azure Advisor Advisor API 2017-04-19 Official Microsoft Azure REST API OpenAPI specification for specification/advisor/resource-manager/Microsoft.Advisor/Advisor/stable/2017-04-19/advisor.json. | Paid | API Key | Yes | Profile | |
| Azure Advisor Advisor API 2020-01-01 Official Microsoft Azure REST API OpenAPI specification for specification/advisor/resource-manager/Microsoft.Advisor/Advisor/stable/2020-01-01/advisor.json. | Paid | API Key | Yes | Profile | |
| Azure Advisor Advisor API 2022-09-01 Official Microsoft Azure REST API OpenAPI specification for specification/advisor/resource-manager/Microsoft.Advisor/Advisor/stable/2022-09-01/advisor.json. | Paid | API Key | Yes | Profile | |
| Azure Advisor Advisor API 2022-10-01 Official Microsoft Azure REST API OpenAPI specification for specification/advisor/resource-manager/Microsoft.Advisor/Advisor/stable/2022-10-01/advisor.json. | Paid | Unknown | Yes | Profile | |
| Azure Advisor Advisor API 2023-01-01 Official Microsoft Azure REST API OpenAPI specification for specification/advisor/resource-manager/Microsoft.Advisor/Advisor/stable/2023-01-01/advisor.json. | Paid | API Key | Yes | Profile | |
| Azure Advisor Advisor API 2025-01-01 Official Microsoft Azure REST API OpenAPI specification for specification/advisor/resource-manager/Microsoft.Advisor/Advisor/stable/2025-01-01/advisor.json. | Paid | API Key | Yes | Profile | |
| Azure Api Center Api Center API 2024-03-01 Official Microsoft Azure REST API OpenAPI specification for specification/apicenter/resource-manager/Microsoft.ApiCenter/ApiCenter/stable/2024-03-01/apicenter.json. | Paid | API Key | Yes | Profile | |
| Azure Api Management Api Management API 2016-07-07 Official Microsoft Azure REST API OpenAPI specification for specification/apimanagement/resource-manager/Microsoft.ApiManagement/ApiManagement/stable/2016-07-07/apimanagement.json. | Paid | API Key | Yes | Profile | |
| Azure Api Management Api Management API 2016-07-07 2 Official Microsoft Azure REST API OpenAPI specification for specification/apimanagement/resource-manager/Microsoft.ApiManagement/ApiManagement/stable/2016-07-07/apimdeployment.json. | Paid | API Key | Yes | Profile | |
| Azure Api Management Api Management API 2016-10-10 Official Microsoft Azure REST API OpenAPI specification for specification/apimanagement/resource-manager/Microsoft.ApiManagement/ApiManagement/stable/2016-10-10/apimanagement.json. | Paid | Unknown | Yes | Profile | |
| Azure Api Management Api Management API 2016-10-10 10 Official Microsoft Azure REST API OpenAPI specification for specification/apimanagement/resource-manager/Microsoft.ApiManagement/ApiManagement/stable/2016-10-10/apimnetworkstatus.json. | Paid | API Key | Yes | Profile | |
| Azure Api Management Api Management API 2016-10-10 11 Official Microsoft Azure REST API OpenAPI specification for specification/apimanagement/resource-manager/Microsoft.ApiManagement/ApiManagement/stable/2016-10-10/apimopenidconnectproviders.json. | Paid | API Key | Yes | Profile | |
| Azure Api Management Api Management API 2016-10-10 12 Official Microsoft Azure REST API OpenAPI specification for specification/apimanagement/resource-manager/Microsoft.ApiManagement/ApiManagement/stable/2016-10-10/apimproducts.json. | Paid | API Key | Yes | Profile | |
| Azure Api Management Api Management API 2016-10-10 13 Official Microsoft Azure REST API OpenAPI specification for specification/apimanagement/resource-manager/Microsoft.ApiManagement/ApiManagement/stable/2016-10-10/apimproperties.json. | Paid | API Key | Yes | Profile | |
| Azure Api Management Api Management API 2016-10-10 14 Official Microsoft Azure REST API OpenAPI specification for specification/apimanagement/resource-manager/Microsoft.ApiManagement/ApiManagement/stable/2016-10-10/apimquotas.json. | Paid | Unknown | Yes | Profile | |
| Azure Api Management Api Management API 2016-10-10 15 Official Microsoft Azure REST API OpenAPI specification for specification/apimanagement/resource-manager/Microsoft.ApiManagement/ApiManagement/stable/2016-10-10/apimreports.json. | Paid | API Key | Yes | Profile | |
| Azure Api Management Api Management API 2016-10-10 17 Official Microsoft Azure REST API OpenAPI specification for specification/apimanagement/resource-manager/Microsoft.ApiManagement/ApiManagement/stable/2016-10-10/apimtenant.json. | Paid | Unknown | Yes | Profile | |
| Azure Api Management Api Management API 2016-10-10 18 Official Microsoft Azure REST API OpenAPI specification for specification/apimanagement/resource-manager/Microsoft.ApiManagement/ApiManagement/stable/2016-10-10/apimusers.json. | Paid | Unknown | Yes | Profile | |
| Azure Api Management Api Management API 2016-10-10 2 Official Microsoft Azure REST API OpenAPI specification for specification/apimanagement/resource-manager/Microsoft.ApiManagement/ApiManagement/stable/2016-10-10/apimapis.json. | Paid | Unknown | Yes | Profile | |
| Azure Api Management Api Management API 2016-10-10 4 Official Microsoft Azure REST API OpenAPI specification for specification/apimanagement/resource-manager/Microsoft.ApiManagement/ApiManagement/stable/2016-10-10/apimbackends.json. | Paid | API Key | Yes | Profile | |
| Azure Api Management Api Management API 2016-10-10 5 Official Microsoft Azure REST API OpenAPI specification for specification/apimanagement/resource-manager/Microsoft.ApiManagement/ApiManagement/stable/2016-10-10/apimcertificates.json. | Paid | API Key | Yes | Profile | |
| Azure Api Management Api Management API 2016-10-10 6 Official Microsoft Azure REST API OpenAPI specification for specification/apimanagement/resource-manager/Microsoft.ApiManagement/ApiManagement/stable/2016-10-10/apimdeployment.json. | Paid | API Key | Yes | Profile | |
| Azure Api Management Api Management API 2016-10-10 7 Official Microsoft Azure REST API OpenAPI specification for specification/apimanagement/resource-manager/Microsoft.ApiManagement/ApiManagement/stable/2016-10-10/apimgroups.json. | Paid | Unknown | Yes | Profile | |
| Azure Api Management Api Management API 2016-10-10 8 Official Microsoft Azure REST API OpenAPI specification for specification/apimanagement/resource-manager/Microsoft.ApiManagement/ApiManagement/stable/2016-10-10/apimidentityprovider.json. | Paid | API Key | Yes | Profile | |
| Azure Api Management Api Management API 2016-10-10 9 Official Microsoft Azure REST API OpenAPI specification for specification/apimanagement/resource-manager/Microsoft.ApiManagement/ApiManagement/stable/2016-10-10/apimloggers.json. | Paid | API Key | Yes | Profile | |
| Azure Api Management Api Management API 2017-03-01 Official Microsoft Azure REST API OpenAPI specification for specification/apimanagement/resource-manager/Microsoft.ApiManagement/ApiManagement/stable/2017-03-01/apimanagement.json. | Paid | API Key | Yes | Profile | |
| Azure Api Management Api Management API 2017-03-01 10 Official Microsoft Azure REST API OpenAPI specification for specification/apimanagement/resource-manager/Microsoft.ApiManagement/ApiManagement/stable/2017-03-01/apimidentityprovider.json. | Paid | API Key | Yes | Profile | |
| Azure Api Management Api Management API 2017-03-01 11 Official Microsoft Azure REST API OpenAPI specification for specification/apimanagement/resource-manager/Microsoft.ApiManagement/ApiManagement/stable/2017-03-01/apimloggers.json. | Paid | API Key | Yes | Profile | |
| Azure Api Management Api Management API 2017-03-01 12 Official Microsoft Azure REST API OpenAPI specification for specification/apimanagement/resource-manager/Microsoft.ApiManagement/ApiManagement/stable/2017-03-01/apimnetworkstatus.json. | Paid | Unknown | Yes | Profile | |
| Azure Api Management Api Management API 2017-03-01 14 Official Microsoft Azure REST API OpenAPI specification for specification/apimanagement/resource-manager/Microsoft.ApiManagement/ApiManagement/stable/2017-03-01/apimopenidconnectproviders.json. | Paid | Unknown | Yes | Profile | |
| Azure Api Management Api Management API 2017-03-01 15 Official Microsoft Azure REST API OpenAPI specification for specification/apimanagement/resource-manager/Microsoft.ApiManagement/ApiManagement/stable/2017-03-01/apimportalsettings.json. | Paid | API Key | Yes | Profile | |
| Azure Api Management Api Management API 2017-03-01 16 Official Microsoft Azure REST API OpenAPI specification for specification/apimanagement/resource-manager/Microsoft.ApiManagement/ApiManagement/stable/2017-03-01/apimproducts.json. | Paid | API Key | Yes | Profile | |
| Azure Api Management Api Management API 2017-03-01 17 Official Microsoft Azure REST API OpenAPI specification for specification/apimanagement/resource-manager/Microsoft.ApiManagement/ApiManagement/stable/2017-03-01/apimproperties.json. | Paid | Unknown | Yes | Profile | |
| Azure Api Management Api Management API 2017-03-01 18 Official Microsoft Azure REST API OpenAPI specification for specification/apimanagement/resource-manager/Microsoft.ApiManagement/ApiManagement/stable/2017-03-01/apimquotas.json. | Paid | API Key | Yes | Profile | |
| Azure Api Management Api Management API 2017-03-01 19 Official Microsoft Azure REST API OpenAPI specification for specification/apimanagement/resource-manager/Microsoft.ApiManagement/ApiManagement/stable/2017-03-01/apimreports.json. | Paid | API Key | Yes | Profile | |
| Azure Api Management Api Management API 2017-03-01 2 Official Microsoft Azure REST API OpenAPI specification for specification/apimanagement/resource-manager/Microsoft.ApiManagement/ApiManagement/stable/2017-03-01/apimapis.json. | Paid | API Key | Yes | Profile | |
| Azure Api Management Api Management API 2017-03-01 21 Official Microsoft Azure REST API OpenAPI specification for specification/apimanagement/resource-manager/Microsoft.ApiManagement/ApiManagement/stable/2017-03-01/apimtagresources.json. | Paid | API Key | Yes | Profile | |
| Azure Api Management Api Management API 2017-03-01 22 Official Microsoft Azure REST API OpenAPI specification for specification/apimanagement/resource-manager/Microsoft.ApiManagement/ApiManagement/stable/2017-03-01/apimtags.json. | Paid | API Key | Yes | Profile | |
| Azure Api Management Api Management API 2017-03-01 23 Official Microsoft Azure REST API OpenAPI specification for specification/apimanagement/resource-manager/Microsoft.ApiManagement/ApiManagement/stable/2017-03-01/apimtenant.json. | Paid | API Key | Yes | Profile | |
| Azure Api Management Api Management API 2017-03-01 24 Official Microsoft Azure REST API OpenAPI specification for specification/apimanagement/resource-manager/Microsoft.ApiManagement/ApiManagement/stable/2017-03-01/apimusers.json. | Paid | API Key | Yes | Profile | |
| Azure Api Management Api Management API 2017-03-01 25 Official Microsoft Azure REST API OpenAPI specification for specification/apimanagement/resource-manager/Microsoft.ApiManagement/ApiManagement/stable/2017-03-01/apimversionsets.json. | Paid | API Key | Yes | Profile | |
| Azure Api Management Api Management API 2017-03-01 4 Official Microsoft Azure REST API OpenAPI specification for specification/apimanagement/resource-manager/Microsoft.ApiManagement/ApiManagement/stable/2017-03-01/apimbackends.json. | Paid | API Key | Yes | Profile | |
| Azure Api Management Api Management API 2017-03-01 5 Official Microsoft Azure REST API OpenAPI specification for specification/apimanagement/resource-manager/Microsoft.ApiManagement/ApiManagement/stable/2017-03-01/apimcertificates.json. | Paid | API Key | Yes | Profile | |
| Azure Api Management Api Management API 2017-03-01 6 Official Microsoft Azure REST API OpenAPI specification for specification/apimanagement/resource-manager/Microsoft.ApiManagement/ApiManagement/stable/2017-03-01/apimdeployment.json. | Paid | API Key | Yes | Profile | |
| Azure Api Management Api Management API 2017-03-01 7 Official Microsoft Azure REST API OpenAPI specification for specification/apimanagement/resource-manager/Microsoft.ApiManagement/ApiManagement/stable/2017-03-01/apimdiagnostics.json. | Paid | API Key | Yes | Profile | |
| Azure Api Management Api Management API 2017-03-01 9 Official Microsoft Azure REST API OpenAPI specification for specification/apimanagement/resource-manager/Microsoft.ApiManagement/ApiManagement/stable/2017-03-01/apimgroups.json. | Paid | API Key | Yes | Profile | |
| Azure Api Management Api Management API 2018-01-01 10 Official Microsoft Azure REST API OpenAPI specification for specification/apimanagement/resource-manager/Microsoft.ApiManagement/ApiManagement/stable/2018-01-01/apimgroups.json. | Paid | API Key | Yes | Profile | |
| Azure Api Management Api Management API 2018-01-01 11 Official Microsoft Azure REST API OpenAPI specification for specification/apimanagement/resource-manager/Microsoft.ApiManagement/ApiManagement/stable/2018-01-01/apimidentityprovider.json. | Paid | API Key | Yes | Profile | |
| Azure Api Management Api Management API 2018-01-01 12 Official Microsoft Azure REST API OpenAPI specification for specification/apimanagement/resource-manager/Microsoft.ApiManagement/ApiManagement/stable/2018-01-01/apimissues.json. | Paid | API Key | Yes | Profile | |
| Azure Api Management Api Management API 2018-01-01 13 Official Microsoft Azure REST API OpenAPI specification for specification/apimanagement/resource-manager/Microsoft.ApiManagement/ApiManagement/stable/2018-01-01/apimloggers.json. | Paid | API Key | Yes | Profile | |
| Azure Api Management Api Management API 2018-01-01 14 Official Microsoft Azure REST API OpenAPI specification for specification/apimanagement/resource-manager/Microsoft.ApiManagement/ApiManagement/stable/2018-01-01/apimnetworkstatus.json. | Paid | API Key | Yes | Profile | |
| Azure Api Management Api Management API 2018-01-01 16 Official Microsoft Azure REST API OpenAPI specification for specification/apimanagement/resource-manager/Microsoft.ApiManagement/ApiManagement/stable/2018-01-01/apimopenidconnectproviders.json. | Paid | API Key | Yes | Profile | |
| Azure Api Management Api Management API 2018-01-01 17 Official Microsoft Azure REST API OpenAPI specification for specification/apimanagement/resource-manager/Microsoft.ApiManagement/ApiManagement/stable/2018-01-01/apimportalsettings.json. | Paid | API Key | Yes | Profile | |
| Azure Api Management Api Management API 2018-01-01 18 Official Microsoft Azure REST API OpenAPI specification for specification/apimanagement/resource-manager/Microsoft.ApiManagement/ApiManagement/stable/2018-01-01/apimproducts.json. | Paid | API Key | Yes | Profile | |
| Azure Api Management Api Management API 2018-01-01 19 Official Microsoft Azure REST API OpenAPI specification for specification/apimanagement/resource-manager/Microsoft.ApiManagement/ApiManagement/stable/2018-01-01/apimproperties.json. | Paid | Unknown | Yes | Profile | |
| Azure Api Management Api Management API 2018-01-01 2 Official Microsoft Azure REST API OpenAPI specification for specification/apimanagement/resource-manager/Microsoft.ApiManagement/ApiManagement/stable/2018-01-01/apimversionsets.json. | Paid | API Key | Yes | Profile | |
| Azure Api Management Api Management API 2018-01-01 20 Official Microsoft Azure REST API OpenAPI specification for specification/apimanagement/resource-manager/Microsoft.ApiManagement/ApiManagement/stable/2018-01-01/apimquotas.json. | Paid | API Key | Yes | Profile | |
| Azure Api Management Api Management API 2018-01-01 21 Official Microsoft Azure REST API OpenAPI specification for specification/apimanagement/resource-manager/Microsoft.ApiManagement/ApiManagement/stable/2018-01-01/apimreports.json. | Paid | API Key | Yes | Profile | |
| Azure Api Management Api Management API 2018-01-01 23 Official Microsoft Azure REST API OpenAPI specification for specification/apimanagement/resource-manager/Microsoft.ApiManagement/ApiManagement/stable/2018-01-01/apimtagresources.json. | Paid | Unknown | Yes | Profile | |
| Azure Api Management Api Management API 2018-01-01 24 Official Microsoft Azure REST API OpenAPI specification for specification/apimanagement/resource-manager/Microsoft.ApiManagement/ApiManagement/stable/2018-01-01/apimtags.json. | Paid | API Key | Yes | Profile | |
| Azure Api Management Api Management API 2018-01-01 25 Official Microsoft Azure REST API OpenAPI specification for specification/apimanagement/resource-manager/Microsoft.ApiManagement/ApiManagement/stable/2018-01-01/apimtenant.json. | Paid | API Key | Yes | Profile | |
| Azure Api Management Api Management API 2018-01-01 26 Official Microsoft Azure REST API OpenAPI specification for specification/apimanagement/resource-manager/Microsoft.ApiManagement/ApiManagement/stable/2018-01-01/apimusers.json. | Paid | API Key | Yes | Profile | |
| Azure Api Management Api Management API 2018-01-01 3 Official Microsoft Azure REST API OpenAPI specification for specification/apimanagement/resource-manager/Microsoft.ApiManagement/ApiManagement/stable/2018-01-01/apimanagement.json. | Paid | API Key | Yes | Profile | |
| Azure Api Management Api Management API 2018-01-01 4 Official Microsoft Azure REST API OpenAPI specification for specification/apimanagement/resource-manager/Microsoft.ApiManagement/ApiManagement/stable/2018-01-01/apimapis.json. | Paid | API Key | Yes | Profile | |
| Azure Api Management Api Management API 2018-01-01 6 Official Microsoft Azure REST API OpenAPI specification for specification/apimanagement/resource-manager/Microsoft.ApiManagement/ApiManagement/stable/2018-01-01/apimbackends.json. | Paid | 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.