Scalability Testing

A collection of tools, frameworks, APIs, and datasets for performing scalability and load testing of web services, APIs, and distributed systems. Scalability testing evaluates how a system performs as load increases, identifying bottlenecks, capacity limits, and performance degradation points. Key tools include Apache JMeter, k6, Gatling, Locust, and cloud-based platforms like AWS Load Testing, Azure Load Testing, and BlazeMeter.

Scalability Testing publishes 1 API on the APIs.io network: Projects API. Tagged areas include API Testing, Load Testing, Performance Testing, Scalability, and Stress Testing.

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

Scalability Testing’s developer surface includes authentication, GitHub presence, documentation, and 8 more developer resources.

🌐 Visit website 📡 Source on GitHub

32.7/100 thin ▬ flat Agent 20/100 agent aware Full breakdown ↓
scored 2026-09-08 · rubric v0.20.0

AccessFreemiumSelf serve⚡ Free to try

1 APIs

API Testing Load Testing Performance Testing Scalability Stress Testing

Kin Score

Kin Score How this is scored →
scored 2026-09-08 · rubric v0.20.0

Composite quality — 32.7/100 · thin

Contract Quality 13.8 / 23

Developer Ergonomics 3.9 / 18

Access Clarity 2.8 / 18

Operational Transparency 1.5 / 12

Contract Governance 2.7 / 11

Discoverability 5.3 / 9

Create-or-Update Ergonomics 0.0 / 10

Agent readiness — 20/100 · agent aware

Machine-Readable Contract 18 / 18

Agentic Access Contract 10 / 10

Documented Reversibility 0 / 6

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

Delegated User Identity 0 / 6

Protected Resource Metadata 0 / 5

Registration Without a Human 0 / 6

Agentic Commerce Well-Known Document 0 / 5

Create-or-Update Ergonomics applies to this provider. This API accepts writes, so it carries 10 points of the composite. It is scored from the published contracts themselves: whether a caller can create-or-update in one call, whether the write accepts a key the caller already holds, and whether the response says which branch ran. Without that, every write needs a search-and-branch in front of it, and the first time that check is skipped a duplicate record is created. Scored against the observed mean rather than raw — a provider at the catalog average is unchanged by this facet, not penalised by it.

Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. Every facet and dimension name above is a link: it opens that measurement's own page — what it means, the exact checks that feed it, how the whole catalog distributes on it, and the providers at the top of it. This rating is computed from github.com/api-evangelist/scalability-testing: open an issue to ask a question, or submit a pull request to add artifacts. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

APIs 6

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

Grafana k6 Cloud API

The Grafana k6 Cloud REST API provides programmatic access to run, manage, and retrieve results for load tests executed on the k6 cloud platform. k6 is an open-source load testi...

BlazeMeter API

The BlazeMeter REST API provides access to the BlazeMeter cloud load testing platform. BlazeMeter supports JMeter, Gatling, Locust, Selenium, and custom test plans. The API enab...

Apache JMeter

Apache JMeter is the most widely-used open-source load testing tool. It supports HTTP, HTTPS, FTP, JDBC, LDAP, SOAP, REST, and more protocols. JMeter provides a REST API in its ...

Locust Load Testing

Locust is a scalable, distributed open-source load testing framework written in Python. Test scenarios are defined in pure Python code. Locust exposes a REST API and web UI for ...

Gatling Load Testing

Gatling is an open-source load testing framework built on Akka and Netty, providing high performance with a Scala/Java/Kotlin DSL for defining test scenarios. The Gatling Enterp...

Scalability Testing Projects API

The Projects API from Scalability Testing — 4 operation(s) for projects.

Open Collections 3

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

API Collection

OPEN COLLECTION

Grafana Cloud k6 REST Projects API

OPEN COLLECTION

Grafana Cloud k6 REST API

OPEN COLLECTION

Pricing Plans 1

Published pricing tiers and plan structures.

Scalability Testing Plans Pricing

3 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Scalability Testing Rate Limits

5 limits

RATE LIMITS

FinOps 1

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

Scalability Testing Finops

FINOPS

Semantic Vocabularies 1

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

Scalability Testing Context

5 classes · 22 properties

JSON-LD

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

Scalability Testing API Rules

5 rules · 3 warnings 2 info

SPECTRAL

JSON Schema 1

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

LoadTestResult

10 properties

JSON SCHEMA

JSON Structure 1

JSON Structure definitions describing this provider's data shapes.

Scalability Testing Test Result Structure

0 properties

JSON STRUCTURE

Examples 1

Example request and response payloads for these APIs.

Scalability Testing K6 Test Result Example

4 fields

EXAMPLE

Security Posture 2

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

Scalability Testing Authentication

apiKey/http · 2 schemes

SECURITY

Scalability Testing Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Agentic Access 1

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

Scalability Testing Agentic Access

8 operations · 4 acting

AGENTIC

Resources

Documentation 1

Reference material describing how the API behaves

Documentation

Documentation

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess

AgenticAccess

Design & Contract 2

Pagination, idempotency, versioning, errors, and events

Vocabulary

Vocabulary

JSONLD

JSONLD

Build 4

SDKs, sample code, and the tooling you integrate with

GitHub

GitHub

GitHub

GitHub

Access & Security 2

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Authentication

Authentication

Company 1

The organization behind the API

Website

Website

Source (apis.yml)

aid: scalability-testing
name: Scalability Testing
description: A collection of tools, frameworks, APIs, and datasets for performing scalability and load testing of web services,
  APIs, and distributed systems. Scalability testing evaluates how a system performs as load increases, identifying bottlenecks,
  capacity limits, and performance degradation points. Key tools include Apache JMeter, k6, Gatling, Locust, and cloud-based
  platforms like AWS Load Testing, Azure Load Testing, and BlazeMeter.
type: Index
deliveryModel:
  model: unknown
  open_source: false
  commercial: false
  callable_host: true
  label: Delivery model not determined — needs a product licence on record
  confidence: low
  source:
  - openapi
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: freemium
  onboarding: self-serve
  trial: false
  try_now: true
  public: false
  label: Freemium · Self-serve signup
  confidence: medium
  source:
  - plans
  - authentication
  - security
  generated: '2026-09-03'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/scalability-testing.png
tags:
- API Testing
- Load Testing
- Performance Testing
- Scalability
- Stress Testing
url: https://raw.githubusercontent.com/api-evangelist/scalability-testing/refs/heads/main/apis.yml
created: '2024-01-15'
modified: '2026-05-02'
specificationVersion: '0.23'
apis:
- aid: scalability-testing:k6-cloud-api
  name: Grafana k6 Cloud API
  description: The Grafana k6 Cloud REST API provides programmatic access to run, manage, and retrieve results for load tests
    executed on the k6 cloud platform. k6 is an open-source load testing tool using JavaScript/TypeScript test scripts. The
    cloud platform adds distributed execution, real-time results, and team collaboration features.
  humanURL: https://grafana.com/docs/grafana-cloud/testing/k6/
  baseURL: https://api.k6.io/v3
  tags:
  - k6
  - Load Testing
  - Performance Testing
  properties:
  - type: Documentation
    url: https://grafana.com/docs/grafana-cloud/testing/k6/reference/rest-api/
- aid: scalability-testing:blazemeter-api
  name: BlazeMeter API
  description: The BlazeMeter REST API provides access to the BlazeMeter cloud load testing platform. BlazeMeter supports
    JMeter, Gatling, Locust, Selenium, and custom test plans. The API enables test execution, monitoring, result retrieval,
    and configuration management.
  humanURL: https://guide.blazemeter.com/hc/en-us/categories/200698715-BlazeMeter-API
  baseURL: https://a.blazemeter.com/api/v4
  tags:
  - BlazeMeter
  - JMeter
  - Load Testing
  properties:
  - type: Documentation
    url: https://guide.blazemeter.com/hc/en-us/categories/200698715-BlazeMeter-API
- aid: scalability-testing:jmeter
  name: Apache JMeter
  description: Apache JMeter is the most widely-used open-source load testing tool. It supports HTTP, HTTPS, FTP, JDBC, LDAP,
    SOAP, REST, and more protocols. JMeter provides a REST API in its distributed mode and integrates with BlazeMeter, Azure
    Load Testing, and other cloud platforms for scaled execution.
  humanURL: https://jmeter.apache.org/
  tags:
  - Apache
  - JMeter
  - Load Testing
  - Open-Source
  tags_raw:
  - Apache
  - JMeter
  - Load Testing
  - Open Source
  properties:
  - type: Documentation
    url: https://jmeter.apache.org/usermanual/index.html
  - type: GitHub
    url: https://github.com/apache/jmeter
- aid: scalability-testing:locust
  name: Locust Load Testing
  description: Locust is a scalable, distributed open-source load testing framework written in Python. Test scenarios are
    defined in pure Python code. Locust exposes a REST API and web UI for controlling test execution, viewing real-time metrics,
    and integrating with CI/CD pipelines.
  humanURL: https://locust.io/
  baseURL: http://localhost:8089
  tags:
  - Load Testing
  - Locust
  - Open-Source
  - Python
  tags_raw:
  - Load Testing
  - Locust
  - Open Source
  - Python
  properties:
  - type: Documentation
    url: https://docs.locust.io/en/stable/
  - type: GitHub
    url: https://github.com/locustio/locust
- aid: scalability-testing:gatling
  name: Gatling Load Testing
  description: Gatling is an open-source load testing framework built on Akka and Netty, providing high performance with a
    Scala/Java/Kotlin DSL for defining test scenarios. The Gatling Enterprise cloud platform provides distributed execution
    and advanced analytics APIs.
  humanURL: https://gatling.io/
  tags:
  - Gatling
  - Java
  - Load Testing
  - Open-Source
  - Scala
  tags_raw:
  - Gatling
  - Java
  - Load Testing
  - Open Source
  - Scala
  properties:
  - type: Documentation
    url: https://docs.gatling.io/
  - type: GitHub
    url: https://github.com/gatling/gatling
- aid: scalability-testing:scalability-testing-projects-api
  name: Scalability Testing Projects API
  description: The Projects API from Scalability Testing — 4 operation(s) for projects.
  humanURL: https://grafana.com/docs/grafana-cloud/testing/k6/
  baseURL: https://api.k6.io/v3
  tags:
  - Project
  tags_raw:
  - Projects
  properties:
  - type: OpenAPI
    url: openapi/scalability-testing-projects-api-openapi.yml
  - type: Documentation
    url: https://learn.microsoft.com/en-us/azure/load-testing/
common:
- type: AgenticAccess
  url: agentic-access/scalability-testing-agentic-access.yml
- type: DomainSecurity
  url: security/scalability-testing-domain-security.yml
- type: Authentication
  url: authentication/scalability-testing-authentication.yml
- type: Website
  url: https://k6.io/
- type: GitHub
  url: https://github.com/grafana/k6
- type: GitHub
  url: https://github.com/apache/jmeter
- type: GitHub
  url: https://github.com/locustio/locust
- type: GitHub
  url: https://github.com/gatling/gatling
- type: Documentation
  url: https://grafana.com/docs/grafana-cloud/testing/k6/
- type: Vocabulary
  url: vocabulary/scalability-testing-vocabulary.yml
- type: JSONLD
  url: json-ld/scalability-testing-context.jsonld
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com

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