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Scalable Software and Systems

A topic collection exploring the APIs, design patterns, frameworks, and platforms that enable scalable software and systems engineering. Covers architectural patterns such as CQRS, event sourcing, saga, MACH architecture, API-first design, and modular monoliths, as well as the tooling ecosystems that support building maintainable, high-scale software. Relevant to software architects, platform teams, and senior engineers building enterprise-grade distributed systems.

Scalable Software and Systems publishes 2 APIs on the APIs.io network: Entities API and Locations API. Tagged areas include API First, Architecture Patterns, CQRS, Distributed Systems, and Enterprise.

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

Scalable Software and Systems’ developer surface includes authentication, code examples, and 12 more developer resources.

42.3/100 developing ▼ -5.0 Agent 32/100 agent aware Full breakdown ↓
scored 2026-07-28 · rubric v0.6
AccessFreemiumSelf serve⚡ Free to try
9 APIs
API FirstArchitecture PatternsCQRSDistributed SystemsEnterpriseEvent DrivenMicroservicesScalable ArchitectureSoftware EngineeringSystems Design

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-07-28 · rubric v0.6
Composite quality — 42.3/100 · developing
Contract Quality 13.4 / 25
Developer Ergonomics 2.2 / 20
Commercial Clarity 7.9 / 20
Operational Transparency 4.1 / 13
Governance 8.3 / 12
Discoverability 6.5 / 10
Agent readiness — 32/100 · 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 7 / 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/scalable-software-and-systems: 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 9

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

Backstage Software Catalog API

Backstage by Spotify provides a software catalog API and developer portal platform for managing all software components, services, websites, and infrastructure at scale. Its cat...

CloudEvents API

CloudEvents is a CNCF specification for describing event data in a common way. It defines a core data model and HTTP, AMQP, MQTT, and Kafka bindings enabling interoperable event...

Apache Kafka Admin API

Apache Kafka's Admin REST API enables creating and managing topics, partitions, consumer groups, and cluster configurations for high-throughput event streaming pipelines used in...

NATS Management API

NATS is a lightweight, high-performance messaging system for distributed applications. Its management API provides monitoring, subject inspection, and JetStream (persistent stre...

Dapr API

Dapr (Distributed Application Runtime) provides building block APIs for service invocation, pub/sub messaging, state management, bindings, actors, and distributed tracing. Abstr...

OpenTelemetry API

OpenTelemetry provides vendor-neutral APIs, SDKs, and instrumentation for generating traces, metrics, and logs. Essential for observability in scalable distributed software syst...

Argo CD API

Argo CD provides a declarative GitOps continuous delivery API for Kubernetes applications. Enables teams to manage application deployments at scale using Git as the source of tr...

Scalable Software and Systems Entities API

The Entities API from Scalable Software and Systems — 6 operation(s) for entities.

Scalable Software and Systems Locations API

The Locations API from Scalable Software and Systems — 2 operation(s) for locations.

Scroll for all 9

Open Collections 1

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

Pricing Plans 1

Published pricing tiers and plan structures.

Rate Limits 1

Documented rate limits and quota policies.

FinOps 1

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

Semantic Vocabularies 1

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

Scalable Software And Systems Context

35 classes · 0 properties

JSON-LD

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

Scalable Software and Systems API Rules

5 rules · 3 warnings 2 info

SPECTRAL

JSON Schema 1

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

Domain Event

15 properties

JSON SCHEMA

JSON Structure 1

JSON Structure definitions describing this provider's data shapes.

Examples 2

Example request and response payloads for these APIs.

Security Posture 2

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

Agentic Access 1

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

Scalable Software And Systems Agentic Access

11 operations · 7 acting

11 operations · 7 acting

AGENTIC

Resources

Documentation 6

Reference material describing how the API behaves

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

Design & Contract 3

Pagination, idempotency, versioning, errors, and events

Build 2

SDKs, sample code, and the tooling you integrate with

Access & Security 2

Authentication, authorization, and security posture

Source (apis.yml)

apis.yml Raw ↑
aid: scalable-software-and-systems
name: Scalable Software and Systems
description: A topic collection exploring the APIs, design patterns, frameworks, and platforms that enable scalable software
  and systems engineering. Covers architectural patterns such as CQRS, event sourcing, saga, MACH architecture, API-first
  design, and modular monoliths, as well as the tooling ecosystems that support building maintainable, high-scale software.
  Relevant to software architects, platform teams, and senior engineers building enterprise-grade distributed systems.
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/scalable-software-and-systems.png
tags:
- API First
- Architecture Patterns
- CQRS
- Distributed Systems
- Enterprise
- Event Driven
- Microservices
- Scalable Architecture
- Software Engineering
- Systems Design
type: Index
created: '2025-01-20'
modified: '2026-05-02'
specificationVersion: '0.19'
apis:
- aid: scalable-software-and-systems:backstage
  name: Backstage Software Catalog API
  description: Backstage by Spotify provides a software catalog API and developer portal platform for managing all software
    components, services, websites, and infrastructure at scale. Its catalog API enables registering, tracking, and discovering
    software components across an organization.
  tags:
  - Developer Portal
  - Internal Developer Platform
  - Software Catalog
  - Systems Design
  humanURL: https://backstage.io/docs/features/software-catalog/software-catalog-api
  properties:
  - type: Documentation
    url: https://backstage.io/docs/features/software-catalog/software-catalog-api
  - type: GitHub
    url: https://github.com/backstage/backstage
- aid: scalable-software-and-systems:cloudevents
  name: CloudEvents API
  description: CloudEvents is a CNCF specification for describing event data in a common way. It defines a core data model
    and HTTP, AMQP, MQTT, and Kafka bindings enabling interoperable event-driven system design across cloud providers and
    middleware.
  tags:
  - CNCF
  - Event Driven
  - Events
  - Integration
  - Standards
  humanURL: https://cloudevents.io/
  properties:
  - type: Documentation
    url: https://cloudevents.io/
  - type: GitHub
    url: https://github.com/cloudevents/spec
  - type: Specification
    url: https://github.com/cloudevents/spec/blob/main/cloudevents/spec.md
- aid: scalable-software-and-systems:kafka-admin
  name: Apache Kafka Admin API
  description: Apache Kafka's Admin REST API enables creating and managing topics, partitions, consumer groups, and cluster
    configurations for high-throughput event streaming pipelines used in scalable, event-driven architectures.
  tags:
  - Event Driven
  - Event Streaming
  - High Throughput
  - Messaging
  humanURL: https://kafka.apache.org/documentation/
  properties:
  - type: Documentation
    url: https://kafka.apache.org/documentation/
  - type: GitHub
    url: https://github.com/apache/kafka
- aid: scalable-software-and-systems:nats
  name: NATS Management API
  description: NATS is a lightweight, high-performance messaging system for distributed applications. Its management API provides
    monitoring, subject inspection, and JetStream (persistent streams) management for building scalable event-driven systems.
  tags:
  - Cloud Native
  - Event Driven
  - High Performance
  - Messaging
  - Microservices
  humanURL: https://docs.nats.io/
  properties:
  - type: Documentation
    url: https://docs.nats.io/
  - type: GitHub
    url: https://github.com/nats-io/nats-server
- aid: scalable-software-and-systems:dapr
  name: Dapr API
  description: Dapr (Distributed Application Runtime) provides building block APIs for service invocation, pub/sub messaging,
    state management, bindings, actors, and distributed tracing. Abstracts away infrastructure complexity for portable, scalable
    software.
  tags:
  - Distributed Systems
  - Event Driven
  - Microservices
  - Scalable Architecture
  humanURL: https://docs.dapr.io/reference/api/
  properties:
  - type: Documentation
    url: https://docs.dapr.io/reference/api/
  - type: GitHub
    url: https://github.com/dapr/dapr
- aid: scalable-software-and-systems:opentelemetry
  name: OpenTelemetry API
  description: OpenTelemetry provides vendor-neutral APIs, SDKs, and instrumentation for generating traces, metrics, and logs.
    Essential for observability in scalable distributed software systems, enabling performance analysis and root cause diagnosis.
  tags:
  - Distributed Tracing
  - Logs
  - Metrics
  - Observability
  - Telemetry
  humanURL: https://opentelemetry.io/docs/
  properties:
  - type: Documentation
    url: https://opentelemetry.io/docs/
  - type: GitHub
    url: https://github.com/open-telemetry/opentelemetry-specification
- aid: scalable-software-and-systems:argocd
  name: Argo CD API
  description: Argo CD provides a declarative GitOps continuous delivery API for Kubernetes applications. Enables teams to
    manage application deployments at scale using Git as the source of truth for system state.
  tags:
  - CD
  - GitOps
  - Kubernetes
  - Platform Engineering
  humanURL: https://argo-cd.readthedocs.io/en/stable/developer-guide/api-docs/
  properties:
  - type: Documentation
    url: https://argo-cd.readthedocs.io/en/stable/developer-guide/api-docs/
  - type: GitHub
    url: https://github.com/argoproj/argo-cd
- aid: scalable-software-and-systems:scalable-software-and-systems-entities-api
  name: Scalable Software and Systems Entities API
  description: The Entities API from Scalable Software and Systems — 6 operation(s) for entities.
  humanURL: https://backstage.io/docs/features/software-catalog/software-catalog-api
  tags:
  - Entities
  properties:
  - type: OpenAPI
    url: openapi/scalable-software-and-systems-entities-api-openapi.yml
  - type: Documentation
    url: https://docs.temporal.io/
  - type: GitHub
    url: https://github.com/temporalio/temporal
- aid: scalable-software-and-systems:scalable-software-and-systems-locations-api
  name: Scalable Software and Systems Locations API
  description: The Locations API from Scalable Software and Systems — 2 operation(s) for locations.
  humanURL: https://backstage.io/docs/features/software-catalog/software-catalog-api
  tags:
  - Locations
  properties:
  - type: OpenAPI
    url: openapi/scalable-software-and-systems-locations-api-openapi.yml
  - type: Documentation
    url: https://docs.temporal.io/
  - type: GitHub
    url: https://github.com/temporalio/temporal
common:
- type: AgenticAccess
  url: agentic-access/scalable-software-and-systems-agentic-access.yml
- type: DomainSecurity
  url: security/scalable-software-and-systems-domain-security.yml
- type: Authentication
  url: authentication/scalable-software-and-systems-authentication.yml
- type: Guide
  url: https://microservices.io/patterns/data/cqrs.html
  name: CQRS Pattern
- type: Guide
  url: https://microservices.io/patterns/data/event-sourcing.html
  name: Event Sourcing Pattern
- type: Guide
  url: https://microservices.io/patterns/data/saga.html
  name: Saga Pattern
- type: Guide
  url: https://www.cncf.io/projects/
  name: CNCF Projects Landscape
- type: Guide
  url: https://12factor.net/
  name: The Twelve-Factor App
- type: JSONSchema
  url: https://github.com/api-evangelist/scalable-software-and-systems/blob/main/json-schema/scalable-software-and-systems-event-schema.json
  name: Domain Event JSON Schema
- type: JSONStructure
  url: https://github.com/api-evangelist/scalable-software-and-systems/blob/main/json-structure/scalable-software-and-systems-event-structure.json
  name: Domain Event JSON Structure
- type: JSONLDContext
  url: https://github.com/api-evangelist/scalable-software-and-systems/blob/main/json-ld/scalable-software-and-systems-context.jsonld
  name: Scalable Software and Systems JSON-LD Context
- type: Vocabulary
  url: https://github.com/api-evangelist/scalable-software-and-systems/blob/main/vocabulary/scalable-software-and-systems-vocabulary.yml
  name: Scalable Software and Systems Vocabulary
- type: Examples
  url: https://github.com/api-evangelist/scalable-software-and-systems/blob/main/examples/scalable-software-and-systems-order-placed-event-example.json
  name: Order Placed Event Example
- type: Examples
  url: https://github.com/api-evangelist/scalable-software-and-systems/blob/main/examples/scalable-software-and-systems-temporal-workflow-example.json
  name: Temporal Order Saga Workflow Example
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
  url: https://apievangelist.com