Scala
A topic collection covering the Scala programming language ecosystem, including its standard library, key frameworks, and widely-used libraries. Scala is a strongly-typed, JVM-based language that blends object-oriented and functional programming, widely used in big data engineering, distributed systems, fintech, and backend development. The ecosystem includes the Akka actor framework, Play web framework, ZIO effect system, Cats typeclass library, http4s, Slick, sbt build tool, and Spark. Scala 3.8 is the current major version (January 2026).
Limited machine-readable signal and partial portal coverage — documentation a human can read, but little a machine or agent can consume without scraping.
API Evangelist profiles Scala the way a machine reads it — 21 machine-readable artifacts across 11 APIs, pulled from the provider's own public surface and indexed so a developer, an analyst, or an AI agent can evaluate it against every other provider on the network.
Every provider in the network is reduced to the same set of machine-readable artifacts — OpenAPI contracts, event specifications, GraphQL schemas, runnable collections, pricing and rate-limit signals, security posture, OAuth scopes, and the agent surfaces (MCP servers and skills) that let software drive the API on its own. We profile them because the interface is the part of a company you can actually inspect: it is a truer signal of what a provider does than any marketing page. From those artifacts we compute the Kin Score — Scala scores 38.7/100 (thin), with a separate agent-readiness read of 14/100 (human only). The full breakdown is below, followed by every artifact we hold — each card links through to its machine-readable definition on apis.io.
Kin Score
This is the API Evangelist rating — a single, repeatable read computed from the artifacts on this page. Green fill is points earned; the red track is points possible, so every bar shows earned-versus-possible at a glance.
Kin Score
How this is scored →scored 2026-07-27 · rubric v0.5
How we profile Scala
Each block below is one kind of artifact we hold for Scala. For each we say what it is and why it earns a place in the profile, then list every one we've indexed — capped at two rows, scroll within the panel for the rest.
APIs 11
Each API is captured as its own OpenAPI definition — every operation, parameter, and response. This is the single most useful machine-readable description of what an API does, and it's what lets us score, lint, mock, and generate against it without asking the provider for anything.
Individual APIs this provider publishes, each with its own machine-readable definition.
Scala Standard Library API
The Scala Standard Library provides core data structures, collections, concurrent primitives, and runtime utilities for Scala programs on the JVM, JavaScript (Scala.js), and Nat...
Akka API
Akka is a toolkit for building highly concurrent, distributed, and fault-tolerant applications on the JVM using the Actor model. Includes Akka Actors, Akka HTTP, Akka Streams, a...
Akka HTTP API
Akka HTTP provides a full server- and client-side HTTP stack built on Akka Streams. Offers high-throughput, non-blocking HTTP handling with a powerful Scala DSL for routing and ...
Play Framework API
Play is a reactive web framework for Scala (and Java) built on Akka and Akka Streams. Provides MVC routing, template engine, WS client, and reactive database integrations for bu...
ZIO API
ZIO is a type-safe, composable library for asynchronous and concurrent programming in Scala. Provides a purely functional effect system with structured concurrency, resource man...
Cats API
Cats is a lightweight, modular library for functional programming in Scala. It provides type class abstractions (Functor, Monad, Applicative, etc.) and their instances for stand...
http4s API
http4s is a typeful, functional, streaming HTTP library for Scala built on cats-effect and fs2. Provides server and client abstractions with backends for Blaze, Ember, Jetty, an...
Slick API
Slick is Functional Relational Mapping (FRM) for Scala — a type-safe, composable database access library that lets you work with stored data almost as if you were using Scala co...
Circe API
Circe is the most widely used JSON library for Scala, built on top of Cats. Provides encoding, decoding, traversal, and transformation of JSON values with automatic derivation s...
Apache Spark API
Apache Spark is the dominant big data processing framework in the Scala ecosystem. Its API enables large-scale data processing, SQL analytics, streaming, and machine learning ac...
sbt Build Tool
sbt (Simple Build Tool) is the dominant build tool in the Scala ecosystem (90% adoption). Its Server API enables IDE integration via the Build Server Protocol (BSP). sbt 2.0 rel...
Scroll within the panel for all 11 ·
Pricing Plans 1
Pricing is part of the interface. Machine-readable plans tell you what a tier costs and includes before you commit — one of the six things the Kin Score reads for commercial clarity.
Published pricing tiers and plan structures.
Scala Plans Pricing
PLANSRate Limits 1
Rate limits are the difference between a demo that works and a production integration that doesn't fall over. Publishing them is an operational-transparency signal — and a hard requirement for any agent that plans its own throughput.
Documented rate limits and quota policies.
Scala Rate Limits
RATE LIMITSFinOps 1
Cost, billing, and metering signals let a buyer model the financial operations of an API before it's live. We profile them for the same reason we profile pricing: the money is part of the contract.
Cost, billing, and metering signals for API financial operations.
Scala Finops
FINOPSSemantic Vocabularies 1
JSON-LD contexts give the data shared meaning across APIs. We profile them because semantics are what let a machine reconcile 'customer' here with 'customer' somewhere else.
JSON-LD contexts and semantic vocabularies used across these APIs.
Scala Context
JSON-LDSpectral Rules 1
Governance rulesets we run against this provider's specs — the automated checks behind parts of the score. Profiling them makes the quality bar explicit and re-runnable, not a matter of opinion.
Scala API Rules
SPECTRALJSON Schema 1
Standalone JSON Schema definitions describe the data models behind the API. We profile them so the shapes are validatable on their own — useful long after a single request is forgotten.
Standalone JSON Schema definitions for this provider's data models.
Scala Library
JSON SCHEMAJSON Structure 1
JSON Structure captures the data shapes in a form built for tooling — a complement to JSON Schema that keeps the model machine-legible.
JSON Structure definitions describing this provider's data shapes.
Scala Library Structure
JSON STRUCTUREExamples 2
Real request and response payloads are what turn a spec from abstract into obvious — and they're one of the twelve things an agent needs to call an API correctly on the first try.
Example request and response payloads for these APIs.
Scala Zio Http Example
EXAMPLESecurity Posture 1
Authentication, domain security, vulnerability disclosure, and trust-center signals — the evidence that a provider takes security seriously enough to document it. We profile it because you can't govern what you can't see.
Authentication, domain security, vulnerability disclosure, and trust-center signals.
Resources
Every other property we hold for Scala — documentation, portals, status pages, policies, and corporate surface — grouped by the job it does, following the integrator's arc from getting started to running in production.
Documentation 2
Reference material describing how the API behaves
Design & Contract 3
Pagination, idempotency, versioning, errors, and events
Build 3
SDKs, sample code, and the tooling you integrate with
Access & Security 1
Authentication, authorization, and security posture
Operate 2
Status, limits, changes, and where to get help
Company 3
The organization behind the API
Other 1
Properties that don't map to a standard resource type
← All providers · Data indexed from github.com/api-evangelist/scala · machine-readable index on apis.io