Scalability

A subject-matter collection covering APIs, tools, frameworks, and data sources related to application scalability, infrastructure scaling, performance optimization, and elastic resource management. This topic spans cloud provider auto-scaling, event-driven autoscaling (KEDA), load balancing, database scaling, and observability for scale.

Scalability publishes 6 APIs on the APIs.io network, including KEDA (Kubernetes Event-Driven Autoscaling) API, AWS Auto Scaling API, Google Cloud Compute Engine Autoscaler API, and 3 more. Tagged areas include Auto-Scaling, Cloud Computing, DevOps, Distributed Systems, and Elasticity.

The Scalability catalog on APIs.io includes 1 JSON-LD context and 1 Spectral governance ruleset.

Scalability’s developer surface includes engineering blog and 6 more developer resources.

📡 Source on GitHub

22.9/100 emerging ▬ flat Agent 16/100 agent aware Full breakdown ↓
scored 2026-08-25 · rubric v0.14.0

AccessFreemium

7 APIs

Auto-Scaling Cloud Computing DevOps Distributed SystemsElasticityHigh Availability Infrastructure Load Balancing Performance Scalability

Kin Score

Kin Score How this is scored →
scored 2026-08-25 · rubric v0.14.0

Composite quality — 22.9/100 · emerging

Contract Quality 9.3 / 25

Developer Ergonomics 0.5 / 20

Access Clarity 3.2 / 20

Operational Transparency 1.4 / 13

Contract Governance 3.0 / 12

Discoverability 5.6 / 10

Agent readiness — 16/100 · agent aware

Machine-Readable Contract 18 / 18

Agentic Access Contract 0 / 10

Documented Reversibility 0 / 6

MCP Server 0 / 12

Machine-Readable Auth 0 / 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

Delegated User Identity 0 / 6

Protected Resource Metadata 0 / 5

Registration Without a Human 0 / 6

Agentic Commerce Surface 0 / 5

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/scalability: 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 7

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

Rate Limits 1

Documented rate limits and quota policies.

Scalability Rate Limits

5 limits

RATE LIMITS

FinOps 1

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

JSON Schema 2

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

Examples 2

Example request and response payloads for these APIs.

Documentation 2

Reference material describing how the API behaves

JSONSchema

JSONSchema

JSONSchema

JSONSchema

Design & Contract 2

Pagination, idempotency, versioning, errors, and events

JSONLD

JSONLD

Vocabulary

Vocabulary

Build 1

SDKs, sample code, and the tooling you integrate with

GitHubOrganization

GitHubOrganization

Company 1

The organization behind the API

Blog

Blog

Other 1

Properties that don't map to a standard resource type

CNCF Landscape

CNCF Landscape

Source (apis.yml)

name: Scalability
description: A subject-matter collection covering APIs, tools, frameworks, and data sources related to application scalability,
  infrastructure scaling, performance optimization, and elastic resource management. This topic spans cloud provider auto-scaling,
  event-driven autoscaling (KEDA), load balancing, database scaling, and observability for scale.
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/scalability.png
url: https://raw.githubusercontent.com/api-evangelist/scalability/refs/heads/main/apis.yml
created: '2024-01-15'
modified: '2026-05-02'
specificationVersion: '0.23'
tags:
- Auto-Scaling
- Cloud Computing
- DevOps
- Distributed Systems
- Elasticity
- High Availability
- Infrastructure
- Load Balancing
- Performance
- Scalability
tags_raw:
- Auto Scaling
- Cloud Computing
- DevOps
- Distributed Systems
- Elasticity
- High Availability
- Infrastructure
- Load Balancing
- Performance
- Scalability
apis:
- name: KEDA (Kubernetes Event-Driven Autoscaling) API
  description: KEDA is a Kubernetes-based event-driven autoscaling component and CNCF graduate project. It provides fine-grained
    autoscaling (including to/from zero) for event-driven Kubernetes workloads by bridging over 70 built-in scalers to message
    brokers, cloud services, and databases. KEDA extends the Kubernetes Horizontal Pod Autoscaler (HPA) with custom resource
    definitions for ScaledObjects and ScaledJobs.
  image: https://keda.sh/img/logos/keda-icon-color.png
  humanUrl: https://keda.sh/
  baseUrl: https://api.keda.sh
  tags:
  - Auto-Scaling
  - CNCF
  - Event-Driven
  - Kubernetes
  - Scale To Zero
  tags_raw:
  - Auto Scaling
  - CNCF
  - Event-Driven
  - Kubernetes
  - Scale To Zero
  properties:
  - type: Documentation
    url: https://keda.sh/docs/
  - type: GitHub
    url: https://github.com/kedacore/keda
  - type: OpenAPI
    url: https://raw.githubusercontent.com/kedacore/keda/main/apis/keda/v1alpha1/
  - type: ChangeLog
    url: https://github.com/kedacore/keda/releases
  - type: Blog
    url: https://keda.sh/blog/
  contact:
  - type: GitHubIssues
    url: https://github.com/kedacore/keda/issues
  - type: Slack
    url: https://kubernetes.slack.com/archives/CKZJ36A5D
- name: AWS Auto Scaling API
  description: Amazon Web Services Auto Scaling monitors applications and automatically adjusts capacity to maintain steady,
    predictable performance at the lowest possible cost. Supports EC2 Auto Scaling, Application Auto Scaling for ECS, DynamoDB,
    Lambda, and more. Part of the AWS SDK and REST API surface.
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  humanUrl: https://aws.amazon.com/autoscaling/
  baseUrl: https://autoscaling.amazonaws.com
  tags:
  - Amazon Web Services
  - Auto-Scaling
  - Cloud
  - EC2
  - Elasticity
  tags_raw:
  - Amazon Web Services
  - Auto Scaling
  - Cloud
  - EC2
  - Elasticity
  properties:
  - type: Documentation
    url: https://docs.aws.amazon.com/autoscaling/
  - type: OpenAPI
    url: https://raw.githubusercontent.com/APIs-guru/openapi-directory/main/APIs/amazonaws.com/autoscaling/2011-01-01/openapi.yaml
  - type: Pricing
    url: https://aws.amazon.com/autoscaling/pricing/
  - type: GettingStarted
    url: https://docs.aws.amazon.com/autoscaling/ec2/userguide/get-started-with-ec2-auto-scaling.html
  contact:
  - type: Support
    url: https://aws.amazon.com/contact-us/
- name: Google Cloud Compute Engine Autoscaler API
  description: Google Cloud's Autoscaler API enables automatic scaling of managed instance groups based on CPU utilization,
    load balancing capacity, or Cloud Monitoring metrics. Integrates with Google Kubernetes Engine (GKE) for cluster autoscaling
    and node auto-provisioning.
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  humanUrl: https://cloud.google.com/compute/docs/autoscaler
  baseUrl: https://compute.googleapis.com/compute/v1
  tags:
  - Auto-Scaling
  - Cloud
  - GKE
  - Google Cloud
  - Instance Groups
  tags_raw:
  - Auto Scaling
  - Cloud
  - GKE
  - Google Cloud
  - Instance Groups
  properties:
  - type: Documentation
    url: https://cloud.google.com/compute/docs/autoscaler
  - type: OpenAPI
    url: https://raw.githubusercontent.com/APIs-guru/openapi-directory/main/APIs/googleapis.com/compute/v1/openapi.yaml
  - type: Pricing
    url: https://cloud.google.com/compute/pricing
  - type: SDKs
    url: https://cloud.google.com/sdk/docs
  contact:
  - type: Support
    url: https://cloud.google.com/support
- name: Azure Autoscale REST API
  description: Microsoft Azure Autoscale provides a REST API for managing autoscale settings on Azure resources including
    Virtual Machine Scale Sets, App Service, and Azure Container Apps. Supports schedule-based and metric-based scaling rules
    with notification capabilities.
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  humanUrl: https://learn.microsoft.com/en-us/azure/azure-monitor/autoscale/autoscale-overview
  baseUrl: https://management.azure.com
  tags:
  - Auto-Scaling
  - Azure
  - Cloud
  - Microsoft
  - Virtual Machine Scale Sets
  tags_raw:
  - Auto Scaling
  - Azure
  - Cloud
  - Microsoft
  - Virtual Machine Scale Sets
  properties:
  - type: Documentation
    url: https://learn.microsoft.com/en-us/azure/azure-monitor/autoscale/autoscale-overview
  - type: OpenAPI
    url: https://raw.githubusercontent.com/Azure/azure-rest-api-specs/main/specification/monitor/resource-manager/Microsoft.Insights/stable/2022-10-01/autoScale_API.json
  - type: SDKs
    url: https://learn.microsoft.com/en-us/azure/developer/
  - type: Pricing
    url: https://azure.microsoft.com/en-us/pricing/
  contact:
  - type: Support
    url: https://azure.microsoft.com/en-us/support/
- name: CloudWatch Application Signals API
  description: Amazon CloudWatch Application Signals provides application performance monitoring (APM) to help detect and
    diagnose performance issues and automatically correlate them with infrastructure metrics for scaling decisions. Part of
    the AWS observability suite used in scalability engineering.
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  humanUrl: https://docs.aws.amazon.com/AmazonCloudWatch/latest/monitoring/CloudWatch-Application-Signals.html
  baseUrl: https://monitoring.amazonaws.com
  tags:
  - Amazon Web Services
  - Observability
  - APM
  - Monitoring
  - Performance
  properties:
  - type: Documentation
    url: https://docs.aws.amazon.com/AmazonCloudWatch/latest/monitoring/CloudWatch-Application-Signals.html
  - type: OpenAPI
    url: https://raw.githubusercontent.com/APIs-guru/openapi-directory/main/APIs/amazonaws.com/monitoring/2010-08-01/openapi.yaml
  - type: GettingStarted
    url: https://docs.aws.amazon.com/AmazonCloudWatch/latest/monitoring/GetStarted.html
  contact:
  - type: Support
    url: https://aws.amazon.com/contact-us/
- name: Prometheus HTTP API
  description: Prometheus is the de-facto open-source monitoring and alerting toolkit for cloud-native applications and a
    CNCF graduate project. The Prometheus HTTP API provides access to time series data, metadata, and administrative functions
    used extensively in scalability engineering to track metrics and inform autoscaling decisions.
  image: https://prometheus.io/assets/prometheus_logo_grey.svg
  humanUrl: https://prometheus.io/
  baseUrl: https://prometheus.io/api/v1
  tags:
  - CNCF
  - Metrics
  - Monitoring
  - Observability
  - Open-Source
  - Prometheus
  - Time Series
  tags_raw:
  - CNCF
  - Metrics
  - Monitoring
  - Observability
  - Open Source
  - Prometheus
  - Time Series
  properties:
  - type: Documentation
    url: https://prometheus.io/docs/prometheus/latest/querying/api/
  - type: GitHub
    url: https://github.com/prometheus/prometheus
  - type: OpenAPI
    url: https://raw.githubusercontent.com/prometheus/prometheus/main/web/api/v1/api.go
  - type: GettingStarted
    url: https://prometheus.io/docs/introduction/first_steps/
  contact:
  - type: GitHubIssues
    url: https://github.com/prometheus/prometheus/issues
- name: Grafana HTTP API
  description: Grafana is the open-source platform for monitoring and observability, providing a REST HTTP API for managing
    dashboards, data sources, users, and alerts. Widely used alongside Prometheus for scalability metrics visualization and
    alerting workflows.
  image: https://grafana.com/static/assets/img/fav32.png
  humanUrl: https://grafana.com/
  baseUrl: https://grafana.com/api
  tags:
  - Dashboards
  - Grafana
  - Metrics
  - Monitoring
  - Observability
  - Open-Source
  tags_raw:
  - Dashboards
  - Grafana
  - Metrics
  - Monitoring
  - Observability
  - Open Source
  properties:
  - type: Documentation
    url: https://grafana.com/docs/grafana/latest/developers/http_api/
  - type: GitHub
    url: https://github.com/grafana/grafana
  - type: GettingStarted
    url: https://grafana.com/docs/grafana/latest/getting-started/
  - type: Pricing
    url: https://grafana.com/pricing/
  contact:
  - type: Community
    url: https://community.grafana.com/
common:
- type: GitHubOrganization
  url: https://github.com/kedacore
- type: CNCF Landscape
  url: https://landscape.cncf.io/card-mode?category=auto-scaling
- type: Blog
  url: https://kubernetes.io/blog/
- type: JSONSchema
  url: https://raw.githubusercontent.com/api-evangelist/scalability/main/json-schema/scalability-scaling-policy-schema.json
- type: JSONSchema
  url: https://raw.githubusercontent.com/api-evangelist/scalability/main/json-schema/scalability-load-balancer-schema.json
- type: JSONLD
  url: https://raw.githubusercontent.com/api-evangelist/scalability/main/json-ld/scalability-context.jsonld
- type: Vocabulary
  url: https://raw.githubusercontent.com/api-evangelist/scalability/main/vocabulary/scalability-vocabulary.yml
maintainers:
- FN: API Evangelist
  email: kin@apievangelist.com
  url: https://apievangelist.com
include:
- name: Cloud Infrastructure Providers
  url: https://raw.githubusercontent.com/api-evangelist/scalable-infrastructure/refs/heads/main/apis.yml
- name: Container Orchestration
  url: https://raw.githubusercontent.com/api-evangelist/scalable-architecture/refs/heads/main/apis.yml
- name: Monitoring and Observability
  url: https://raw.githubusercontent.com/api-evangelist/scalable-platforms/refs/heads/main/apis.yml

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