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.
Kin Score
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 COLLECTIONPricing Plans 1
Published pricing tiers and plan structures.
Akka Plans Pricing
PLANSRate Limits 1
Documented rate limits and quota policies.
Akka Rate Limits
RATE LIMITSFinOps 1
Cost, billing, and metering signals for API financial operations.
Akka Finops
FINOPSFeatures 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
JSON-LDSpectral Rules 2
Spectral governance rulesets for linting and validating these APIs.
Akka API Rules
SPECTRALAkka API Rules
SPECTRALJSON Schema 1
Standalone JSON Schema definitions for this provider's data models.
Akka Configuration
JSON SCHEMAJSON Structure 1
JSON Structure definitions describing this provider's data shapes.
Akka Config Structure
JSON STRUCTUREExamples 3
Example request and response payloads for these APIs.
Akka Config Example
EXAMPLESecurity Posture 2
Authentication, domain security, vulnerability disclosure, and trust-center signals.
Agentic Access 1
Recommended x-agentic-access execution contracts for AI agents.
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