apis.yml

aid: specifications
url: >-
  https://raw.githubusercontent.com/api-evangelist/specifications/refs/heads/main/apis.yml
name: API Specifications
type: Index
deliveryModel:
  model: unknown
  open_source: unknown
  commercial: false
  callable_host: false
  label: Delivery model not determined — needs a product licence on record
  confidence: low
  source:
  - repository-unlicensed
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: unknown
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Unknown
  confidence: low
  source: []
  generated: '2026-07-22'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/specifications.png
tags:
- API Specification
- Specification Languages
- API Design
- Contracts
- Schemas
- Interface Definitions
- Standards
tags_raw:
- API Specifications
- Specification Languages
- API Design
- Contracts
- Schemas
- Interface Definitions
- Standards
description: >-
  Meta-index of the specification languages used to describe APIs, events,
  schemas, and service interfaces across the modern API landscape. This repo
  is the META layer above the topical repos that profile each individual
  specification — it catalogs every major HTTP, event-driven, schema, and
  service interface specification along with its current version, governing
  body, license, and tooling ecosystem.
created: '2026-05-22'
modified: '2026-05-22'
specificationVersion: '0.23'
apis:
- aid: specifications:openapi
  name: OpenAPI Specification (OAS)
  description: >-
    The OpenAPI Specification (formerly Swagger) is the dominant industry
    standard for describing HTTP-based RESTful APIs. OAS describes endpoints,
    operations, parameters, request/response schemas, authentication, and
    examples in a machine- and human-readable format. The active versions
    are 3.0.x and 3.1.0 (which is fully aligned with JSON Schema 2020-12).
    OpenAPI is governed by the OpenAPI Initiative, a Linux Foundation
    project, under the Apache 2.0 license.
  humanURL: https://www.openapis.org/
  baseURL: https://spec.openapis.org/oas/latest.html
  tags:
  - OpenAPI
  - REST
  - HTTP
  - Specification Language
  - OpenAPI Initiative
  - Linux Foundation
  properties:
  - type: Documentation
    url: https://learn.openapis.org/
  - type: Specification
    url: https://spec.openapis.org/oas/latest.html
    title: OpenAPI Specification (latest)
  - type: Specification
    url: https://spec.openapis.org/oas/v3.1.0
    title: OpenAPI 3.1.0
  - type: Specification
    url: https://spec.openapis.org/oas/v3.0.3
    title: OpenAPI 3.0.3
  - type: GitHubRepository
    url: https://github.com/OAI/OpenAPI-Specification
  - type: GitHubOrganization
    url: https://github.com/OAI
    title: OpenAPI Initiative GitHub Organization
  - type: Governance
    url: https://www.openapis.org/about
    title: OpenAPI Initiative / Linux Foundation
  - type: License
    url: https://www.apache.org/licenses/LICENSE-2.0
    title: Apache 2.0
  - type: Tools
    url: https://tools.openapis.org/
    title: OpenAPI Tools Directory
  - type: JSONSchema
    url: >-
      https://raw.githubusercontent.com/api-evangelist/specifications/refs/heads/main/json-schema/specification-record-schema.json
    title: Specification Record Schema
  - type: Examples
    url: >-
      https://raw.githubusercontent.com/api-evangelist/specifications/refs/heads/main/examples/openapi-example.json
    title: OpenAPI Specification Record Example
- aid: specifications:asyncapi
  name: AsyncAPI Specification
  description: >-
    AsyncAPI is the open standard for describing event-driven and
    message-driven APIs across protocols such as Kafka, AMQP, MQTT, WebSocket,
    NATS, and SNS/SQS. AsyncAPI 3.0 (December 2023) decoupled operations from
    channels, enabling clearer modelling of pub/sub, request/reply, and
    streaming patterns. AsyncAPI is governed by the AsyncAPI Initiative
    under the Linux Foundation, distributed under the Apache 2.0 license.
  humanURL: https://www.asyncapi.com/
  baseURL: https://www.asyncapi.com/docs/reference/specification/latest
  tags:
  - AsyncAPI
  - Event-Driven
  - Messaging
  - Streaming
  - Specification Language
  - Linux Foundation
  properties:
  - type: Documentation
    url: https://www.asyncapi.com/docs
  - type: Specification
    url: https://www.asyncapi.com/docs/reference/specification/latest
    title: AsyncAPI Specification (latest)
  - type: Specification
    url: https://www.asyncapi.com/docs/reference/specification/v3.0.0
    title: AsyncAPI 3.0.0
  - type: GitHubOrganization
    url: https://github.com/asyncapi
  - type: GitHubRepository
    url: https://github.com/asyncapi/spec
  - type: Governance
    url: https://www.asyncapi.com/community
    title: AsyncAPI Initiative / Linux Foundation
  - type: License
    url: https://www.apache.org/licenses/LICENSE-2.0
    title: Apache 2.0
  - type: Tools
    url: https://www.asyncapi.com/tools
    title: AsyncAPI Tools
  - type: Examples
    url: >-
      https://raw.githubusercontent.com/api-evangelist/specifications/refs/heads/main/examples/asyncapi-example.json
    title: AsyncAPI Specification Record Example
- aid: specifications:json-schema
  name: JSON Schema
  description: >-
    JSON Schema is a declarative language for annotating and validating JSON
    documents. It is the foundational schema language for most modern API
    specifications (OpenAPI 3.1, AsyncAPI 3, and others embed it directly).
    The current stable dialect is Draft 2020-12. Governance is moving toward
    a chartered standards body (JSON Schema Foundation), with the IETF as
    the historical sponsor; reference implementations and tooling are MIT
    and BSD-licensed.
  humanURL: https://json-schema.org/
  baseURL: https://json-schema.org/draft/2020-12
  tags:
  - JSON-Schema
  - Validation
  - Schema
  - IETF
  - Specification Language
  tags_raw:
  - JSON Schema
  - Validation
  - Schema
  - IETF
  - Specification Language
  properties:
  - type: Documentation
    url: https://json-schema.org/learn/getting-started-step-by-step
  - type: Specification
    url: https://json-schema.org/draft/2020-12/release-notes
    title: JSON Schema Draft 2020-12 Release Notes
  - type: Specification
    url: https://json-schema.org/draft/2020-12/json-schema-core
    title: JSON Schema Core (2020-12)
  - type: GitHubOrganization
    url: https://github.com/json-schema-org
  - type: GitHubRepository
    url: https://github.com/json-schema-org/json-schema-spec
  - type: Governance
    url: https://json-schema.org/specification
    title: JSON Schema Specification Governance
  - type: License
    url: https://opensource.org/license/bsd-3-clause
    title: BSD-3-Clause (reference tooling)
  - type: Tools
    url: https://json-schema.org/tools
    title: JSON Schema Tooling Ecosystem
  - type: Examples
    url: >-
      https://raw.githubusercontent.com/api-evangelist/specifications/refs/heads/main/examples/json-schema-example.json
    title: JSON Schema Specification Record Example
- aid: specifications:json-structure
  name: JSON Structure
  description: >-
    JSON Structure is an emerging open specification that extends and
    complements JSON Schema with a clearer, more code-generation-friendly
    type system designed for data contracts and modeling. It introduces
    structural primitives intended for cross-language model generation. The
    project is community-driven and Apache 2.0 licensed.
  humanURL: https://json-structure.org/
  baseURL: https://json-structure.org/meta/core/v0/
  tags:
  - JSON Structure
  - Schema
  - Data Modeling
  - Code Generation
  - Specification Language
  properties:
  - type: Documentation
    url: https://json-structure.org/
  - type: Specification
    url: https://json-structure.org/meta/core/v0/
    title: JSON Structure Core Meta-Schema v0
  - type: GitHubRepository
    url: https://github.com/json-structure/specification
  - type: License
    url: https://www.apache.org/licenses/LICENSE-2.0
    title: Apache 2.0
  - type: Examples
    url: >-
      https://raw.githubusercontent.com/api-evangelist/specifications/refs/heads/main/examples/json-structure-example.json
    title: JSON Structure Specification Record Example
- aid: specifications:graphql
  name: GraphQL SDL
  description: >-
    GraphQL is a query language and runtime for APIs, defined by the GraphQL
    Specification. The GraphQL Schema Definition Language (SDL) is the
    declarative format used to define types, queries, mutations, and
    subscriptions on a GraphQL server. The spec is governed by the GraphQL
    Foundation, a Linux Foundation project, under the OWFa 1.0 license. The
    current spec edition is the October 2021 release with continued
    Working Drafts.
  humanURL: https://graphql.org/
  baseURL: https://spec.graphql.org/
  tags:
  - GraphQL
  - SDL
  - Query Language
  - Schema
  - GraphQL Foundation
  - Linux Foundation
  properties:
  - type: Documentation
    url: https://graphql.org/learn/
  - type: Specification
    url: https://spec.graphql.org/October2021/
    title: GraphQL Specification (October 2021)
  - type: Specification
    url: https://spec.graphql.org/draft/
    title: GraphQL Specification (Working Draft)
  - type: GitHubOrganization
    url: https://github.com/graphql
  - type: GitHubRepository
    url: https://github.com/graphql/graphql-spec
  - type: Governance
    url: https://graphql.org/foundation/
    title: GraphQL Foundation
  - type: License
    url: https://www.openwebfoundation.org/the-agreements/the-owf-1-0-agreements-granted-claims/owfa-1-0
    title: OWFa 1.0
  - type: Examples
    url: >-
      https://raw.githubusercontent.com/api-evangelist/specifications/refs/heads/main/examples/graphql-example.json
    title: GraphQL Specification Record Example
  - url: graphql/specifications-graphql.md
    type: GraphQL
- aid: specifications:grpc-protobuf
  name: gRPC and Protocol Buffers
  description: >-
    gRPC is a high-performance RPC framework using HTTP/2 and Protocol
    Buffers (Protobuf) as its IDL and wire format. Service definitions are
    written in .proto files. gRPC is a CNCF graduated project; Protocol
    Buffers (proto2/proto3, with proto editions emerging) are maintained by
    Google. Both are Apache 2.0 / BSD-3-Clause licensed.
  humanURL: https://grpc.io/
  baseURL: https://protobuf.dev/
  tags:
  - gRPC
  - Protobuf
  - Protocol Buffers
  - RPC
  - CNCF
  - Specification Language
  properties:
  - type: Documentation
    url: https://grpc.io/docs/
  - type: Documentation
    url: https://protobuf.dev/programming-guides/proto3/
    title: Protocol Buffers Language Guide (proto3)
  - type: Specification
    url: https://protobuf.dev/reference/protobuf/proto3-spec/
    title: Protocol Buffers proto3 Specification
  - type: GitHubOrganization
    url: https://github.com/grpc
  - type: GitHubOrganization
    url: https://github.com/protocolbuffers
  - type: GitHubRepository
    url: https://github.com/grpc/grpc
  - type: GitHubRepository
    url: https://github.com/protocolbuffers/protobuf
  - type: Governance
    url: https://www.cncf.io/projects/grpc/
    title: gRPC at CNCF
  - type: License
    url: https://www.apache.org/licenses/LICENSE-2.0
    title: Apache 2.0
  - type: Examples
    url: >-
      https://raw.githubusercontent.com/api-evangelist/specifications/refs/heads/main/examples/grpc-protobuf-example.json
    title: gRPC / Protobuf Specification Record Example
- aid: specifications:smithy
  name: Smithy
  description: >-
    Smithy is an open-source IDL and code-generation framework for defining
    services and SDKs, created and maintained by AWS. It is protocol-agnostic
    (HTTP REST, AWS JSON, MQTT, RPC), supports traits-based modeling, and is
    used to generate AWS service SDKs, OpenAPI, and JSON Schema. Smithy is
    Apache 2.0 licensed.
  humanURL: https://smithy.io/
  baseURL: https://smithy.io/2.0/
  tags:
  - Smithy
  - AWS
  - IDL
  - Service Definition
  - Specification Language
  properties:
  - type: Documentation
    url: https://smithy.io/2.0/quickstart.html
  - type: Specification
    url: https://smithy.io/2.0/spec/index.html
    title: Smithy 2.0 Specification
  - type: GitHubOrganization
    url: https://github.com/smithy-lang
  - type: GitHubRepository
    url: https://github.com/smithy-lang/smithy
  - type: Governance
    url: https://github.com/smithy-lang
    title: Smithy maintained by Smithy-Lang / AWS
  - type: License
    url: https://www.apache.org/licenses/LICENSE-2.0
    title: Apache 2.0
  - type: Examples
    url: >-
      https://raw.githubusercontent.com/api-evangelist/specifications/refs/heads/main/examples/smithy-example.json
    title: Smithy Specification Record Example
- aid: specifications:typespec
  name: TypeSpec
  description: >-
    TypeSpec (formerly Cadl) is a language for describing API shapes
    developed by Microsoft. TypeSpec definitions emit OpenAPI 3.x, JSON
    Schema, Protobuf, and other artifacts, and serve as the upstream source
    for Azure SDK generation. TypeSpec is MIT licensed and maintained on
    GitHub under the microsoft organization.
  humanURL: https://typespec.io/
  baseURL: https://typespec.io/docs
  tags:
  - TypeSpec
  - Microsoft
  - IDL
  - API Design
  - Specification Language
  properties:
  - type: Documentation
    url: https://typespec.io/docs
  - type: Specification
    url: https://typespec.io/docs/language-basics/overview
    title: TypeSpec Language Reference
  - type: GitHubRepository
    url: https://github.com/microsoft/typespec
  - type: GitHubOrganization
    url: https://github.com/microsoft
    title: Microsoft GitHub (governing org)
  - type: Governance
    url: https://github.com/microsoft/typespec/blob/main/GOVERNANCE.md
    title: TypeSpec Governance
  - type: License
    url: https://opensource.org/license/mit
    title: MIT
  - type: Examples
    url: >-
      https://raw.githubusercontent.com/api-evangelist/specifications/refs/heads/main/examples/typespec-example.json
    title: TypeSpec Specification Record Example
- aid: specifications:raml
  name: RAML (RESTful API Modeling Language)
  description: >-
    RAML is a YAML-based modelling language for RESTful APIs, originally
    created by Mulesoft. RAML 1.0 (2016) is the current stable specification.
    RAML governance has effectively converged with Mulesoft / Salesforce,
    and the broader industry has shifted toward OpenAPI; RAML remains in use
    across legacy Mulesoft / Anypoint stacks. Spec licensed under
    Apache 2.0.
  humanURL: https://raml.org/
  baseURL: https://github.com/raml-org/raml-spec
  tags:
  - RAML
  - REST
  - MuleSoft
  - Legacy
  - Specification Language
  tags_raw:
  - RAML
  - REST
  - Mulesoft
  - Legacy
  - Specification Language
  properties:
  - type: Documentation
    url: https://raml.org/developers/raml-100-tutorial
  - type: Specification
    url: https://github.com/raml-org/raml-spec/blob/master/versions/raml-10/raml-10.md
    title: RAML 1.0 Specification
  - type: GitHubOrganization
    url: https://github.com/raml-org
  - type: GitHubRepository
    url: https://github.com/raml-org/raml-spec
  - type: Governance
    url: https://raml.org/about-raml
    title: RAML Workgroup (stewarded by Mulesoft/Salesforce)
  - type: License
    url: https://www.apache.org/licenses/LICENSE-2.0
    title: Apache 2.0
  - type: Examples
    url: >-
      https://raw.githubusercontent.com/api-evangelist/specifications/refs/heads/main/examples/raml-example.json
    title: RAML Specification Record Example
- aid: specifications:api-blueprint
  name: API Blueprint
  description: >-
    API Blueprint is a Markdown-based specification language for describing
    web APIs, originally created by Apiary (acquired by Oracle). The spec is
    MIT licensed but development effectively stalled after Oracle's
    acquisition of Apiary; it is documented here for completeness as
    historical context for the API specification landscape.
  humanURL: https://apiblueprint.org/
  baseURL: https://github.com/apiaryio/api-blueprint
  tags:
  - API Blueprint
  - Markdown
  - Legacy
  - Historical
  - Specification Language
  properties:
  - type: Documentation
    url: https://apiblueprint.org/documentation/tutorial.html
  - type: Specification
    url: https://github.com/apiaryio/api-blueprint/blob/master/API%20Blueprint%20Specification.md
    title: API Blueprint Specification
  - type: GitHubOrganization
    url: https://github.com/apiaryio
  - type: GitHubRepository
    url: https://github.com/apiaryio/api-blueprint
  - type: License
    url: https://opensource.org/license/mit
    title: MIT
  - type: Examples
    url: >-
      https://raw.githubusercontent.com/api-evangelist/specifications/refs/heads/main/examples/api-blueprint-example.json
    title: API Blueprint Specification Record Example
- aid: specifications:wsdl-soap
  name: WSDL / SOAP
  description: >-
    The Web Services Description Language (WSDL) is the historical XML-based
    interface definition language for SOAP web services. WSDL 1.1 (2001) is
    the most widely deployed version; WSDL 2.0 is a W3C Recommendation
    (2007). SOAP and WSDL are governed by the W3C and remain critical in
    legacy enterprise and government integrations. Documented here as the
    historical baseline for service interface specifications.
  humanURL: https://www.w3.org/TR/wsdl/
  baseURL: https://www.w3.org/TR/wsdl20/
  tags:
  - WSDL
  - SOAP
  - W3C
  - XML
  - Legacy
  - Historical
  - Specification Language
  properties:
  - type: Documentation
    url: https://www.w3.org/TR/wsdl20-primer/
  - type: Specification
    url: https://www.w3.org/TR/wsdl/
    title: WSDL 1.1 Note (W3C, 2001)
  - type: Specification
    url: https://www.w3.org/TR/wsdl20/
    title: WSDL 2.0 Recommendation (W3C, 2007)
  - type: Specification
    url: https://www.w3.org/TR/soap12-part1/
    title: SOAP 1.2 Recommendation (W3C)
  - type: Governance
    url: https://www.w3.org/groups/wg/ws-desc/
    title: W3C Web Services Description Working Group
  - type: License
    url: https://www.w3.org/copyright/document-license-2023/
    title: W3C Document License
  - type: Examples
    url: >-
      https://raw.githubusercontent.com/api-evangelist/specifications/refs/heads/main/examples/wsdl-soap-example.json
    title: WSDL / SOAP Specification Record Example
- aid: specifications:json-rpc
  name: JSON-RPC 2.0
  description: >-
    JSON-RPC 2.0 is a stateless, light-weight remote procedure call (RPC)
    protocol encoded in JSON. It is widely used in blockchain/Web3 APIs
    (Ethereum, Bitcoin), IDE language servers (LSP), and developer tooling.
    The 2.0 specification (2010) is the stable revision, maintained by the
    JSON-RPC Working Group. Released into the public domain.
  humanURL: https://www.jsonrpc.org/
  baseURL: https://www.jsonrpc.org/specification
  tags:
  - JSON-RPC
  - RPC
  - JSON
  - Specification Language
  properties:
  - type: Documentation
    url: https://www.jsonrpc.org/
  - type: Specification
    url: https://www.jsonrpc.org/specification
    title: JSON-RPC 2.0 Specification
  - type: Governance
    url: https://www.jsonrpc.org/
    title: JSON-RPC Working Group
  - type: License
    url: https://creativecommons.org/publicdomain/zero/1.0/
    title: Public Domain / CC0
  - type: Examples
    url: >-
      https://raw.githubusercontent.com/api-evangelist/specifications/refs/heads/main/examples/json-rpc-example.json
    title: JSON-RPC Specification Record Example
- aid: specifications:tinybird
  name: Tinybird API Spec
  description: >-
    The Tinybird API specification is a vendor-defined, declarative format
    for describing analytics endpoints (pipes), data sources, and parameters
    backed by ClickHouse. It is documented here as a representative example
    of vendor-specific specification formats that govern modern data API
    products outside of the OpenAPI/AsyncAPI mainline. Maintained by
    Tinybird; SDKs and CLI are MIT licensed.
  humanURL: https://www.tinybird.co/docs
  baseURL: https://www.tinybird.co/docs/api-reference
  tags:
  - Tinybird
  - Analytics
  - Vendor Specification
  - Data API
  - Specification Language
  properties:
  - type: Documentation
    url: https://www.tinybird.co/docs
  - type: APIReference
    url: https://www.tinybird.co/docs/api-reference
    title: Tinybird API Reference
  - type: GitHubOrganization
    url: https://github.com/tinybirdco
  - type: Governance
    url: https://www.tinybird.co/
    title: Tinybird (vendor-governed)
  - type: License
    url: https://opensource.org/license/mit
    title: MIT (SDKs / CLI)
  - type: Examples
    url: >-
      https://raw.githubusercontent.com/api-evangelist/specifications/refs/heads/main/examples/tinybird-example.json
    title: Tinybird API Spec Record Example
common:
- type: IssueTracker
  url: https://github.com/OAI/OpenAPI-Specification/issues
- type: Releases
  url: https://github.com/OAI/OpenAPI-Specification/releases
- type: CodeOfConduct
  url: https://github.com/OAI/.github/blob/main/.github/CODE_OF_CONDUCT.md
- type: ContributionGuide
  url: https://github.com/OAI/OpenAPI-Specification/blob/main/CONTRIBUTING.md
- type: DomainSecurity
  url: security/specifications-domain-security.yml
- type: Website
  url: https://github.com/api-evangelist/specifications
- type: GitHubRepository
  url: https://github.com/api-evangelist/specifications
- type: JSONSchema
  url: >-
    https://raw.githubusercontent.com/api-evangelist/specifications/refs/heads/main/json-schema/specification-record-schema.json
  title: Specification Record JSON Schema
- type: JSONStructure
  url: >-
    https://raw.githubusercontent.com/api-evangelist/specifications/refs/heads/main/json-structure/specification-record-structure.json
  title: Specification Record JSON Structure
- type: JSONLD
  url: >-
    https://raw.githubusercontent.com/api-evangelist/specifications/refs/heads/main/json-ld/specifications-context.jsonld
  title: API Specifications JSON-LD Context
- type: Vocabulary
  url: >-
    https://raw.githubusercontent.com/api-evangelist/specifications/refs/heads/main/vocabulary/specifications-vocabulary.yml
  title: API Specifications Vocabulary
- type: Features
  data:
  - name: HTTP Request/Response Specifications
    description: >-
      Languages for describing synchronous HTTP APIs — paths, methods,
      parameters, request bodies, responses, and security. Includes
      OpenAPI, RAML, API Blueprint, and historically WSDL.
  - name: Event-Driven Specifications
    description: >-
      Languages for describing message-driven and event-driven APIs across
      brokers and protocols. Primarily AsyncAPI 3.x, plus protocol-specific
      schemas (Avro, Protobuf) used in concert.
  - name: Service Interface Definition Languages (IDLs)
    description: >-
      Languages that define language-agnostic service contracts intended
      for code generation across clients and servers. Includes gRPC/Protobuf,
      Smithy, TypeSpec, and historically WSDL.
  - name: Schema Languages
    description: >-
      Languages for describing data shapes independent of a specific
      transport. Includes JSON Schema (the de facto standard, embedded in
      OpenAPI and AsyncAPI) and the emerging JSON Structure.
  - name: RPC Protocol Specifications
    description: >-
      Specifications for remote procedure call protocols. Includes JSON-RPC
      2.0 (used heavily in blockchain and LSP) and gRPC for high-performance
      RPC.
  - name: Vendor-Defined Specifications
    description: >-
      Vendor-specific specification formats that govern modern API products
      (e.g. Tinybird pipes). These often emit OpenAPI as a derived artifact
      while keeping a higher-level domain model as the source of truth.
- type: UseCases
  data:
  - name: Specification Discovery and Cataloging
    description: >-
      Maintaining an enterprise inventory of specifications used across
      internal and partner APIs, mapped to their governing bodies and
      tooling.
  - name: Multi-Format Code Generation
    description: >-
      Choosing or layering specifications (TypeSpec or Smithy as a
      high-level model emitting OpenAPI, JSON Schema, and Protobuf) to
      generate SDKs across protocols.
  - name: Event-Driven Architecture Contracts
    description: >-
      Using AsyncAPI alongside Avro/Protobuf to define event schemas,
      channels, and operations for streaming and message-driven systems.
  - name: Governance and Linting Across Specs
    description: >-
      Applying Spectral or other linting frameworks against OpenAPI,
      AsyncAPI, and JSON Schema artifacts as part of an API governance
      program.
  - name: Legacy SOAP/WSDL Modernization
    description: >-
      Migrating legacy WSDL/SOAP interfaces to OpenAPI-described REST or
      gRPC service contracts as part of modernization initiatives.
- type: Integrations
  data:
  - name: Spectral
    description: >-
      Open-source linting engine (Stoplight) for OpenAPI, AsyncAPI, and
      JSON Schema. The de facto governance engine across HTTP and
      event-driven specs.
  - name: Redocly CLI
    description: >-
      Open-source CLI for linting, bundling, and rendering OpenAPI specs;
      enforces style guides and integrates with CI.
  - name: AsyncAPI Generator
    description: >-
      Template-driven code and documentation generator for AsyncAPI specs
      across languages and brokers.
  - name: Protoc / Buf
    description: >-
      The canonical Protobuf compiler and Buf's modern toolchain for
      linting, breaking-change detection, and code generation against
      .proto files.
  - name: Smithy CLI
    description: >-
      AWS-maintained CLI for compiling Smithy models and generating
      OpenAPI, JSON Schema, and SDK artifacts.
  - name: TypeSpec Compiler
    description: >-
      Microsoft-maintained compiler that emits OpenAPI 3, JSON Schema,
      Protobuf, and other artifacts from TypeSpec sources.
- type: GitHubOrganization
  url: https://github.com/OAI
  title: OpenAPI Initiative
- type: GitHubOrganization
  url: https://github.com/asyncapi
  title: AsyncAPI Initiative
- type: GitHubOrganization
  url: https://github.com/json-schema-org
  title: JSON Schema Organization
- type: GitHubOrganization
  url: https://github.com/json-structure
  title: JSON Structure Organization
- type: GitHubOrganization
  url: https://github.com/graphql
  title: GraphQL Foundation
- type: GitHubOrganization
  url: https://github.com/grpc
  title: gRPC (CNCF)
- type: GitHubOrganization
  url: https://github.com/protocolbuffers
  title: Protocol Buffers
- type: GitHubOrganization
  url: https://github.com/smithy-lang
  title: Smithy-Lang (AWS)
- type: GitHubOrganization
  url: https://github.com/microsoft
  title: Microsoft (TypeSpec)
- type: GitHubOrganization
  url: https://github.com/raml-org
  title: RAML Workgroup
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com