Akka website screenshot

Akka

Akka is a toolkit and runtime for building highly concurrent, distributed, and resilient message-driven applications on the JVM using the actor model for Java and Scala. Maintained by Lightbend, Akka provides a comprehensive set of libraries including actors, HTTP, streams, cluster, persistence, and gRPC for building reactive, microservice-based architectures.

Akka publishes 3 APIs on the APIs.io network: Bootstrap API, Cluster API, and Health API. Tagged areas include Actor Model, Distributed Systems, Frameworks, Java, and Microservices.

The Akka catalog on APIs.io includes 1 JSON-LD context and 2 Spectral governance rulesets.

Akka’s developer surface includes documentation, getting-started guide, engineering blog, pricing, and 10 more developer resources.

48.1/100 developing ▼ -5.0 Agent 25/100 agent aware Full breakdown ↓
scored 2026-07-28 · rubric v0.6
AccessPaid
6 APIs 6 Features 4 Use Cases
Actor ModelDistributed SystemsFrameworksJavaMicroservicesReactiveScala

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-07-28 · rubric v0.6
Composite quality — 48.1/100 · developing
Contract Quality 12.7 / 25
Developer Ergonomics 4.3 / 20
Commercial Clarity 11.6 / 20
Operational Transparency 4.8 / 13
Governance 8.3 / 12
Discoverability 6.5 / 10
Agent readiness — 25/100 · agent aware
Machine-Readable Contract 18 / 18
Agentic Access Contract 10 / 10
MCP Server 0 / 12
Machine-Readable Auth 0 / 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/akka: 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 6

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

Akka HTTP

Akka HTTP is a full HTTP stack (client and server-side) built on Akka actors and streams. It provides a routing DSL for building REST and WebSocket services, with built-in JSON ...

Akka Streams

Akka Streams is a library to process and transfer a sequence of elements using bounded buffer space, implementing the Reactive Streams specification for asynchronous stream proc...

Akka gRPC

Akka gRPC provides support for building streaming gRPC servers and clients on top of Akka Streams, with code generation from protobuf definitions for both Java and Scala.

Akka Bootstrap API

Cluster bootstrap discovery endpoints.

Akka Cluster API

Cluster membership management endpoints.

Akka Health API

Health check endpoints for liveness and readiness probes.

Open Collections 1

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

Akka Management API

OPEN COLLECTION

Pricing Plans 1

Published pricing tiers and plan structures.

Akka Plans Pricing

6 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Akka Rate Limits

3 limits

RATE LIMITS

FinOps 1

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

Akka Finops

FINOPS

Features 6

Notable capabilities this provider offers.

Actor Model

Lightweight concurrent entities (actors) that communicate via asynchronous message passing, enabling high-throughput distributed computation.

Cluster Sharding

Distributes actors across a cluster and automatically rebalances them when nodes join or leave the cluster.

Persistence and Event Sourcing

Durable actor state through event sourcing with pluggable journal backends (Cassandra, PostgreSQL, DynamoDB, etc.).

Distributed Data

Conflict-free replicated data types (CRDTs) for sharing data across cluster nodes without coordination overhead.

HTTP and WebSocket

Full HTTP/1.1 and HTTP/2 server and client stack with routing DSL, JSON support, and WebSocket upgrades.

Reactive Streams

Backpressure-aware stream processing compliant with the Reactive Streams specification, integrating with RxJava, Project Reactor, and others.

Semantic Vocabularies 1

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

Akka Context

2 classes · 7 properties

JSON-LD

Spectral Rules 2

Spectral governance rulesets for linting and validating these APIs.

Akka API Rules

5 rules · 3 warnings 2 info

SPECTRAL

Akka API Rules

16 rules · 7 errors 7 warnings 2 info

SPECTRAL

JSON Schema 1

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

Akka Configuration

1 properties

JSON SCHEMA

JSON Structure 1

JSON Structure definitions describing this provider's data shapes.

Akka Config Structure

1 properties

JSON STRUCTURE

Examples 3

Example request and response payloads for these APIs.

Akka Config Example

1 fields

EXAMPLE

Security Posture 2

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

Akka Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Akka Trust Center

SOC 2, ISO 27001, ISO 27018, PCI DSS, HIPAA, GDPR

SECURITY

Agentic Access 1

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

Akka Agentic Access

7 operations · 2 acting

7 operations · 2 acting

AGENTIC

Use Cases 4

What developers build with this provider.

Microservices

Teams build resilient, location-transparent microservices using Akka actors and HTTP with built-in backpressure and supervision.

Real-Time Data Processing

Organizations process high-throughput event streams using Akka Streams with exactly-once processing guarantees.

Distributed State Management

Applications maintain distributed mutable state using cluster sharding and distributed data without external coordination systems.

Event Sourcing

Systems implement event sourcing and CQRS patterns using Akka Persistence with pluggable journal backends.

Resources

Get Started 1

Portal, sign-up, and the first successful call

Documentation 2

Reference material describing how the API behaves

Agent Surfaces 2

MCP servers, agent skills, and machine-readable catalogs

Design & Contract 2

Pagination, idempotency, versioning, errors, and events

Build 1

SDKs, sample code, and the tooling you integrate with

Access & Security 2

Authentication, authorization, and security posture

Commercial 1

Pricing, plans, and the legal terms of use

Company 3

The organization behind the API

Source (apis.yml)

apis.yml Raw ↑
aid: akka
name: Akka
description: Akka is a toolkit and runtime for building highly concurrent, distributed, and resilient message-driven applications
  on the JVM using the actor model for Java and Scala. Maintained by Lightbend, Akka provides a comprehensive set of libraries
  including actors, HTTP, streams, cluster, persistence, and gRPC for building reactive, microservice-based architectures.
type: Index
accessModel:
  pricing: paid
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Paid
  confidence: medium
  source:
  - plans
  generated: '2026-07-22'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/akka.png
tags:
- Actor Model
- Distributed Systems
- Frameworks
- Java
- Microservices
- Reactive
- Scala
url: https://raw.githubusercontent.com/api-evangelist/akka/refs/heads/main/apis.yml
created: '2026-03-26'
modified: '2026-05-19'
specificationVersion: '0.19'
apis:
- aid: akka:akka-http
  name: Akka HTTP
  description: Akka HTTP is a full HTTP stack (client and server-side) built on Akka actors and streams. It provides a routing
    DSL for building REST and WebSocket services, with built-in JSON marshalling, TLS support, and HTTP/2 capabilities.
  humanURL: https://doc.akka.io/libraries/akka-http/current/
  tags:
  - HTTP
  - REST API
  - Reactive
  - Streaming
  properties:
  - type: Documentation
    url: https://doc.akka.io/libraries/akka-http/current/
  - type: GettingStarted
    url: https://doc.akka.io/libraries/akka-http/current/introduction.html
- aid: akka:akka-streams
  name: Akka Streams
  description: Akka Streams is a library to process and transfer a sequence of elements using bounded buffer space, implementing
    the Reactive Streams specification for asynchronous stream processing with non-blocking backpressure.
  humanURL: https://doc.akka.io/libraries/akka/current/stream/index.html
  tags:
  - Backpressure
  - Data Streaming
  - Reactive
  - Reactive Streams
  properties:
  - type: Documentation
    url: https://doc.akka.io/libraries/akka/current/stream/index.html
- aid: akka:akka-grpc
  name: Akka gRPC
  description: Akka gRPC provides support for building streaming gRPC servers and clients on top of Akka Streams, with code
    generation from protobuf definitions for both Java and Scala.
  humanURL: https://doc.akka.io/libraries/akka-grpc/current/
  tags:
  - gRPC
  - Protobuf
  - Streaming
  properties:
  - type: Documentation
    url: https://doc.akka.io/libraries/akka-grpc/current/
- aid: akka:akka-bootstrap-api
  name: Akka Bootstrap API
  description: Cluster bootstrap discovery endpoints.
  humanURL: https://doc.akka.io/libraries/akka-management/current/
  tags:
  - Bootstrap
  properties:
  - type: OpenAPI
    url: openapi/akka-bootstrap-api-openapi.yml
  - type: Documentation
    url: https://doc.akka.io/libraries/akka-management/current/
- aid: akka:akka-cluster-api
  name: Akka Cluster API
  description: Cluster membership management endpoints.
  humanURL: https://doc.akka.io/libraries/akka-management/current/
  tags:
  - Cluster
  properties:
  - type: OpenAPI
    url: openapi/akka-cluster-api-openapi.yml
  - type: Documentation
    url: https://doc.akka.io/libraries/akka-management/current/
- aid: akka:akka-health-api
  name: Akka Health API
  description: Health check endpoints for liveness and readiness probes.
  humanURL: https://doc.akka.io/libraries/akka-management/current/
  tags:
  - Health
  properties:
  - type: OpenAPI
    url: openapi/akka-health-api-openapi.yml
  - type: Documentation
    url: https://doc.akka.io/libraries/akka-management/current/
common:
- type: AgenticAccess
  url: agentic-access/akka-agentic-access.yml
- type: TrustCenter
  url: security/akka-trust-center.yml
- type: DomainSecurity
  url: security/akka-domain-security.yml
- type: LinkedIn
  url: https://www.linkedin.com/company/akka-io
- type: Website
  url: https://akka.io/
- type: Documentation
  url: https://doc.akka.io/
- type: GettingStarted
  url: https://doc.akka.io/libraries/akka/current/typed/guide/introduction.html
- type: GitHubOrganization
  url: https://github.com/akka
- type: Blog
  url: https://akka.io/blog/
- type: Pricing
  url: https://akka.io/pricing/
- type: JSONSchema
  url: https://raw.githubusercontent.com/api-evangelist/akka/refs/heads/main/json-schema/akka-config.json
- type: SpectralRules
  url: https://raw.githubusercontent.com/api-evangelist/akka/refs/heads/main/rules/akka-spectral-rules.yml
- type: Vocabulary
  url: https://raw.githubusercontent.com/api-evangelist/akka/refs/heads/main/vocabulary/akka-vocabulary.yaml
- type: Features
  data:
  - name: Actor Model
    description: Lightweight concurrent entities (actors) that communicate via asynchronous message passing, enabling high-throughput
      distributed computation.
  - name: Cluster Sharding
    description: Distributes actors across a cluster and automatically rebalances them when nodes join or leave the cluster.
  - name: Persistence and Event Sourcing
    description: Durable actor state through event sourcing with pluggable journal backends (Cassandra, PostgreSQL, DynamoDB,
      etc.).
  - name: Distributed Data
    description: Conflict-free replicated data types (CRDTs) for sharing data across cluster nodes without coordination overhead.
  - name: HTTP and WebSocket
    description: Full HTTP/1.1 and HTTP/2 server and client stack with routing DSL, JSON support, and WebSocket upgrades.
  - name: Reactive Streams
    description: Backpressure-aware stream processing compliant with the Reactive Streams specification, integrating with
      RxJava, Project Reactor, and others.
- type: UseCases
  data:
  - name: Microservices
    description: Teams build resilient, location-transparent microservices using Akka actors and HTTP with built-in backpressure
      and supervision.
  - name: Real-Time Data Processing
    description: Organizations process high-throughput event streams using Akka Streams with exactly-once processing guarantees.
  - name: Distributed State Management
    description: Applications maintain distributed mutable state using cluster sharding and distributed data without external
      coordination systems.
  - name: Event Sourcing
    description: Systems implement event sourcing and CQRS patterns using Akka Persistence with pluggable journal backends.
- type: Integrations
  data:
  - name: Apache Kafka
    description: Alpakka Kafka connector for consuming and producing Kafka messages
  - name: Cassandra
    description: Alpakka Cassandra connector and Akka Persistence journal
  - name: AWS
    description: Alpakka connectors for S3, SQS, SNS, DynamoDB, and other AWS services
  - name: gRPC
    description: Akka gRPC for code generation from protobuf and streaming gRPC services
  - name: Spring Boot
    description: Integration with Spring Boot for mixed Akka and Spring applications
- type: Integrations
  url: https://akka.io/partners
- type: LlmsText
  url: https://akka.io/llms.txt
integrations:
- name: akka_logo
- name: Manulife_logo_with_AI
- name: avows_logo_reverse (1)
- name: aws-logo-white
- name: carahsoft-logo-white
- name: far-networks
- name: gcp-logo-white
- name: improving-logo-white
- name: infosys-logo-white
- name: azure-logo-white
- name: peperina-software-logo-white
- name: scalac-logo-white
- name: shi-logo-white
- name: twoday-logo-white
- name: virtuslab-logo-white
- name: Footer
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com