circe

circe is a JSON library for Scala (and [Scala.js][scala-js]).

Please see the guide for more information about why circe exists and how to use it.

Community

Adopters

Are you using circe? Please consider opening a pull request to list your organization here:

• Abacus
• Anduin Transactions
• Apollo Agriculture
• AutoScout24
• Babylon Health
• Banno inside of Jack Henry
• BBC
• Broad Institute
• Chartboost (sending hundreds of thousands of messages per second on our Ad Exchange)
• CiBO Technologies (using circe to (de)serialize data in support of a sustainable revolution in agriculture)
• ClearScore
• Codacy
• Colisweb
• Connio (creating and managing digital twins with Circe and Akka)
• Coya
• Criteo (collecting 200.000 events per second from our banners)
• Dassault Systèmes
• Datalogue
• Dreamlines
• DriveTribe
• Earnest
• Elastic
• Emmy Sharing
• FOLIO
• GLNGN Server
• Gympass
• Gutefrage
• Hello Soda
• HERE Technologies
• Hireproof
• HolidayCheck
• ImmobilienScout24
• Immozentral
• Indix
• ITV
• Kinoplan
• Latitude Financial Services
• MatchesFashion
• Merit
• Metacommerce
• Mobile GmbH
• MomentFeed
• New Work
• Nike
• Ocado Technology
• On Air Entertainment
• Onfocus
• Opt Technologies
• OVO Energy
• Panaseer
• Permutive
• Prezi
• Project September (using circe to exchange and store data within the platform and serve data using GraphQL with Sangria)
• Raster Foundry
• Ravel Law (using circe to (de)serialize data for search, analytics, and visualization of tens of millions of legal opinions)
• REA Group - realestate.com.au
• Reonomy
• Resilient plc
• Sky
• Snowplow Analytics
• SoundCloud (transforming 200,000,000 JSON events every hour in MapReduce ETLs)
• Spotify (using circe for JSON IO in [Scio][scio])
• SpotX
• Stripe
• Stylight
• TabMo (parsing more than 100k events per second with Akka Stream and Spark)
• Tinkoff
• The Guardian
• Threat Stack
• Tranzzo
• Twilio (sending many, many millions of messages a day with Circe and Akka)
• Uberall
• VEACT
• WeWork
• Whisk
• Wide Angle Analytics
• Zalando
• Zendesk

Other circe organization projects

Please get in touch on [Gitter][gitter] if you have a circe-related project that you'd like to discuss hosting under the [circe organization][circe-org] on GitHub.

• [circe-benchmarks][circe-benchmarks]: Benchmarks for comparing the performance of circe and other JSON libraries for the JVM.
• [circe-config][circe-config]: A library for translating between HOCON, Java properties, and JSON documents.
• [circe-derivation][circe-derivation]: Experimental generic derivation with improved compile times.
• [circe-fs2][circe-fs2]: A library that provides streaming JSON parsing and decoding built on [fs2][fs2] and [Jawn][jawn].
• [circe-iteratee][circe-iteratee]: A library that provides streaming JSON parsing and decoding built on [iteratee.io][iteratee] and [Jawn][jawn].
• [circe-jackson][circe-jackson]: A library that provides [Jackson][jackson]-supported parsing and printing for circe.
• [circe-spray][circe-spray]: A library that provides JSON marshallers and unmarshallers for [Spray][spray] using circe.
• [circe-yaml][circe-yaml]: A library that uses [SnakeYAML][snakeyaml] to support parsing YAML 1.1 into circe's Json.
• [circe-refined][circe-refined]: A library that provides encoders and decoders using [Refined][refined].

Related projects

The following open source projects are either built on circe or provide circe support:

• [Actor Messenger][actor-im]: A platform for instant messaging.
• [akka-http-json][akka-http-json]: A library that supports using circe for JSON marshalling and unmarshalling in [Akka HTTP][akka-http].
• [akka-stream-json][akka-stream-json]: A library that provides JSON support for stream based applications using Jawn as a parser with a convenience example for circe.
• [Argus][argus]: Generates models and circe encoders and decoders from JSON schemas.
• [Blackdoor JOSE][jose-json-circe]: circe JSON support for blackdoor JOSE and JWT.
• [borer][borer]: Allows circe encoders/decoders to be reused for CBOR (de)serialization.
• [circe-debezium][circe-debezium]: Circe codecs for [Debezium][debezium] payload types
• [circe-geojson][circe-geojson]: Circe support for GeoJSON (RFC 7946)
• [circe-kafka][circe-kafka]: Implicit conversion of Encoder and Decoder into Kafka Serializer/Deserializer/Serde
• [cornichon][cornichon]: A DSL for JSON API testing.
• [Cosmos][cosmos]: An API for [DCOS][dcos] services that uses circe.
• [crjdt][crjdt]: A conflict-free replicated JSON datatype in Scala.
• [diffson][diffson]: A Scala diff / patch library for JSON.
• [elastic4s][elastic4s]: A Scala client for [Elasticsearch][elasticsearch] with circe support.
• [Enumeratum][enumeratum]: Enumerations for Scala with circe integration.
• [Featherbed][featherbed]: A REST client library with circe support.
• [Finch][finch]: A library for building web services with circe support.
• [fintrospect][fintrospect]: HTTP contracts for [Finagle][finagle] with circe support.
• [fluflu][fluflu]: A [Fluentd][fluentd] logger.
• [Github4s][github4s]: A GitHub API wrapper written in Scala.
• [content-api-models][guardian-content-api-models]: The Guardian's Content API Thrift models.
• [http4s][http4s]: A purely functional HTTP library for client and server applications.
• [IdeaLingua][izumi-r2]: Staged Interface Definition and Data Modeling Language & RPC system currently targeting Scala, Go, C# and TypeScript. Scala codegen generates models and JSON codecs using circe.
• [Iglu Schema Repository][iglu]: A [JSON Schema][json-schema] repository with circe support.
• [jsactor][jsactor]: An actor library for Scala.js with circe support.
• [jsoniter-scala-circe][jsoniter-scala-circe]: A booster for faster parsing/printing to/from circe AST and decoding/encoding of java.time._ and BigInt types.
• [jwt-circe][jwt-circe]: A [JSON Web Token][jwt] implementation with circe support.
• [kadai-log][kadai-log]: A logging library with circe support.
• [msgpack4z-circe][msgpack4z-circe]: A [MessagePack][msgpack] implementation with circe support.
• [ohNoMyCirce][ohNoMyCirce]: Friendly compile error messages for [shapeless][shapeless]'s Generic, [circe][circe-org]'s Encoder & Decoder and [slick][slick]'s case class mapping.
• [pekko-http-json][pekko-http-json]: A library that supports using circe for JSON marshalling and unmarshalling in [Pekko HTTP][pekko-http].
• [pekko-streams-circe][pekko-streams-circe]: A library that provides JSON support for stream based applications using Jawn as a parser with a convenience example for circe.
• [play-circe][play-circe]: circe support for [Play!][play].
• [pulsar4s][pulsar4s]: A Scala client for [Apache-Pulsar][pulsar] with circe support.
• [Rapture][rapture]: Support for using circe's parsing and AST in Rapture JSON.
• [roc][roc]: A PostgreSQL client built on Finagle.
• [sangria-circe][sangria-circe]: circe marshalling for [Sangria][sangria], a [GraphQL][graphql] implementation.
• [scalist][scalist]: A [Todoist][todoist] API client.
• [scala-jsonapi][scala-jsonapi]: Scala support library for integr